Single Phase Power Thyristor - IBT · 2015. 7. 19. · 7100A series power thyristor units are used...

EUROTHERM

Single PhasePower Thyristor

Units

User Manual

ε7100A

ENG

i

7100A ADVANCED CONTROLLERS

SINGLE-PHASE POWER THYRISTOR UNITS

7000* RANGES

User Manual

© Copyright Eurotherm Limited 2002

All rights reserved. All reproduction or transmission in any form whatsoever and using any procedure(electronic or mechanical, including photocopying and recording) without written permission fromEurotherm is strictly prohibited.

Ref.: HA176499 ENG - Issue 1.0 - 05/2002

Contents

7100A User Manualii

CONTENTS

Page

European directives and applicable standards . . . . . . . . . .iii

Commissioning flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv

Chapter 1 Identification of power thyristor units . . . . . .1-1

Chapter 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1

Chapter 3 Firing modes . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

Chapter 4 Control and limits . . . . . . . . . . . . . . . . . . . . . . .4-1

Chapter 5 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1

Chapter 6 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1

Eurotherm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1

PURPOSE OF MANUAL

This is the Issue 1.0 User Manual.It describes the Basic Version and all options for 7100A series powerthyristor units with current ratings up to 100 A.

European directives and applicable standards

7100A User Manual iii

EUROPEAN DIRECTIVES AND APPLICABLE STANDARDS

COMPLIANCE WITH PRODUCT STANDARD7100A products comply with the terms of product standard EN 60947-4-3 ‘Contactors and

motor-starters - AC semiconductor controllers and contactors for non-motor loads’.

CE LABELLING7100A products installed and used in accordance with the user manual, bear CE labelling onthe basis of compliance with the essential requirements of the European Low VoltageDirective 73/23 EEC dated 19 February 1973, modified by 93/68/EEC dated 22 July 1993 andthe Electromagnetic Compatibility Directive 89/336/EEC dated 3 May 1989 modified by92/31/EEC dated 28 April 1992 and 93/68/EEC dated 22/07/93.

SAFETYThe units have IP20 protection rating as defined by standard IEC 60529.External wiring must comply with standards IEC 60364-4-43 and IEC 60943.Copper cables and conductors must be used, rated to a temperature of 75°C (167°F).

ELECTROMAGNETIC COMPATIBILITY (EMC)7100A products installed and used in accordance with the user manual, are designed for anindustrial environment and must not be used in the home.

EMC TEST STANDARDSThe units comply with the following EMC test standards, in accordance with the ‘ACsemiconductor motor controllers and conductors for non-motor loads’ standard EN 60947-4-3:

Immunity: EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 61000-4-11

Radiated emissions: CISPR 11 (mod 1990) Conducted emissions: CISPR 11 (mod 1990) Class A, Group 2

(near zero voltage switching)

EMC FILTER (conducted emissions)For facilities required to comply with the levels stipulated under the generic standard forconducted emissions, EN 50081-2, Eurotherm can provide optional filters on units up to100 A:

- internal filters for near zero crossing units (code FILT)- external filters for thyristor firing angle variation units

EMC GUIDETo help you deal with installation-dependent electromagnetic interference effects, Eurotherm provides an ‘Electromagnetic compatibility’ installation guide (ref. HA 025464)which sets out best current practice regarding EMC.

DECLARATION OF COMPLIANCEAn EC declaration of compliance is available on request.

Flowchart

7100A User Manualiv

Check characteristics

Wiring

Auxiliary power supply

Power control (VI) :Calibrate Imax and Pmax while not firing

for given load

Control and limit in I2, V2I2, V2CL control:Calibrate minimum current

Apply control signal

Power upCheck firing

AdjustICO calibrations and threshold

while firing at full rate

Optimise firing delayfor inductive load

Adjust DLF alarm(if conditions met)

Normal operation

CHK/SET push button

Characteristics correspondto product code Chapter 1

Supply protection,protective earth, power, control

Chapter 2

If external supply(for electronics or fan) Page 2-10

Pages 4-4, 4-7, 4-8

Pages 2-7, 2-9

Pages 2-6 to 2-8Chapter 3

Pages 4-5 to 4-8,5-7

Pages 4-4,5-7

Page 3-4

Alarms signalled Chapter 5,page 5-8

-5, 5-6

I lim potentiometer

Ilim,VIlim potentiometers Control signal

"HRC" terminal

GRF, DLF, ICO LEDs

I lim potentiometer

DLY potentiometer

"ANA.IN" terminal block

Chapter 3,page 5-8

ICO option (over-current alarm):Calibrate maximum current

ON, Heat LEDs

COMMISSIONING FLOWCHARTNote: If the code does not correspond, go to the next step.

Identification

7100A User Manual 1-1

Chapter 1

IDENTIFICATION OF POWER THYRISTOR UNITS

Contents Page

General presentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2Base version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2Available functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3

Burst firing mode with current limit . . . . . . . . . . . . . . . . . . . .1-3Burst firing mode with ICO option . . . . . . . . . . . . . . . . . . . . . .1-4Phase angle firing mode with current limit . . . . . . . . . . . . . . .1-5

Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6Allowable current depending on temperature . . . . . . . . . . . . . . . .1-9

Coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10Identification label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12

Identification

7100A User Manual1-2

Chapter 1 IDENTIFICATION

GENERAL PRESENTATION 7100A series power thyristor units are used to control the electrical power of single phaseindustrial loads of all types. The load controlled may comprise high or low temperaturecoefficient resistive loads, short wave infrared elements or transformer primaries.

Current ratings vary from 16 A to 630 A (see coding), at voltages of 100 V to 690 V.

7100A series power thyristor units (rating up to 100 A) comprise two channels, one controlled by thyristors, and one direct internal channel.7100A units above 125 A only comprise a single controlled channel.

Figure 1-1 General view of 7100A power thyristor unit (Base version, 16 A rating)

Protective earth terminal

Controlterminal block

Power terminals (supply side)

Rating(nominal current,nominal voltage)

EUROTHERMε 7100A16 A / 500 V

U1

U2 V2

V1 PE

AN

A.IN

31 0

VA32

RI

33 5

VA

AU

X

16 2

3017

18

N

ON

HEAT

Internal wiring diagram

Power terminals (load side)

Controlterminal

references

Userlabel

Auxiliary supply

terminalreferences

(if specified)

Electronicspower supply

Firing request(Burst mode or single cycle)

Auxiliary supplyterminal block(if specified)

Base version (without options)

Identification


Figure 1-2 General view of 7100A unit (Burst mode, rating 100 A, current limits)


PEV1

V2U2

U1

ALA

RM71

1a

72 1

b

ADJ.C

AL66

0VC

67 H

RC

AN

A.IN

31 0

VA32

RI

33 5

VA

AU

X 16

230

17

18

N

GRF

DLFCHK

A

ON

HEAT

SET

VI L IM

I LIM

+

+

Internal powerwiring diagram

Protective earth terminalPower terminals (supply side)

Control terminal references

V2CL or VICL options: Current limit

GRF option:serious alarms

Rating: nominal current nominal voltage


User label

Electronics power supply

Firing request(Burst mode or single-cycle)

V2CL or VICL options:

Current calibration

DLF option:Diagnostic alarm

push button

VICL option:Power calibration

DLF option:diagnostic alarm

Control connectors

ILIM70°

DLY

XFMR option:Firing delayadjustment

Burst firing mode with current limitCurrent and power limiting options are available in ‘Burst Mode’ and ‘Single-cycle’thyristor firing modes. The figure below shows the front panel, potentiometers, LEDs andconnectors available with the limit options (also see coding).

AVAILABLE FUNCTIONS

Identification


Figure 1-3 General view of 7100A unit (Burst mode, rating 100 A, current limits, ICO option)


PEV1

V2U2

U1

ALA

RM71

1a

72 1

b

DIG

.IN61

0V

D62

ACK

63 5

VD

AN

A.IN

31 0

VA32

RI

33 5

VA

AU

X 16

230

17

18

N

GRF

DLFCHK

A

ON

HEAT

SET

ICO I LIM

+




ICO option:over-current




User label


Firing request(Burst mode

or single-cycle)

Current calibration(Alarm ICO adjustment)


push button


Control connectors

Burst firing mode with ICO option

The figure below shows the general view (LEDs, potentiometers, terminal labels,connectors) of the unit corresponding to the over-current alarm (ICO option) (see alsocoding).

Identification


Figure 1-4 General view of 7100A unit (Phase angle mode, rating 100 A, full options)


PEV1

V2U2

U1

ALA

RM71

1a

72 1

b

ADJ.C

AL66

0VC

67 H

RC

AN

A.IN

31 0

VA3

2

RI33

5VA

AU

X 16

230

17

18

N

GRF

DLFCHK

A

ON

HEAT

SET

VI L IM

I LIM

+

+




V2I2 or VII2 options: Current limit




User label


Firing request(Phase Angle)

V2I2, VII2 and I2options:

Current calibration


push button

VII2 option:Power calibration


Control connectors

ILIM

Phase angle firing mode with current limitCurrent and power limit functions are available in Phase angle firing mode (thyristor firingangle variation). The figure below shows the front panel of the unit with all possibleoptions, LEDs, potentiometers and corresponding connectors (see coding).

Rating Height Width (mm) Depth (mm)

(A) (mm) Base or Options B Options C Base or Options B Options COptions A or A + B or A + C Options A or A + B or A + C

16 to 40 156 52.5 52.5 70 193 218 238 63 156 70 70 70 213 238 238

80 to 100 226 96 96 96 215 243 243

Identification

1-6 7100A User Manual

TECHNICAL SPECIFICATIONS

PowerNominal current 16 A to 630 A at 45°C (see product code)Nominal voltage 100 V to 690 V (see code). Frequency Use from 47 to 63 HzDissipated power 1.3 W (approx.) per amp.Cooling Ratings ≤ 100 A: Natural convection

Ratings ≥ 125 A: 115 V or 230 V fan, consumption 10 VA

Load Single-phase industrial load: Resistive load with low or high temperature coefficient,Short wave infrared elements,Transformer primary.

EnvironmentUse 0 to 45 °C at nominal current,

max altitude 2000 mStorage -10°C to 70°C.Pollution Degree 2 acceptable (defined by IEC 664).Humidity RH 5% to 95%, non-condensing, non-streaming.Over-voltage Over-voltage category III (as defined by IEC 664).

DimensionsDepend on options and combinations of options (see coding)Group A options Base version, open loop or Transformer

Codes: V2, OL, XFMR Group B options Type 1 alarms, current squared control / limit

Codes: DLF, GRF, I2, V2I2, V2CLGroup C options Alarms, power or current squared control

current limitCodes and combinations of codes: ICO, VICL, VII2,DLF/GRF + I2, DLF/GRF + V2I2, DLF/GRF + V2CL

MassRatings 16 A to 40 A max. 0.8 kg Rating 63 A max. 1.9 kgRatings 80 A and 100 A max. 2.2 kg

Identification


ControlSupply Self-powered from line or

external power supply (115 V or 230 V +10%; -15%). Consumption: 10 VA.

Control type Analogue (digital communication with option) • either remote analogue setpoint

0-5 V or 0-10 V (100 kΩ input),0-20 mA or 4-20 mA (250 Ω input)

• or manual setpoint (potentiometer); 5 V supply available for use with 10 kΩ potentiometer.

Firing modesZero crossing firing • Burst mode, base time 16 or 64 cycles

• Single-cycle, 1 base cycle• Advanced single-cycle, 1 base cycle

(firing by whole cycles, non-firing by half cycles).

Firing angle variation • Phase angle

ControlControl parameter • Standard:

Load voltage squared (V2) • Option:

- Apparent power (V . I)- Load current squared (I2) in Phase angle- Open loop in Phase angle.

Linearity and Stability Better than ±2% of full scale.Current limit Option, depending on firing mode:

• Phase angle:Automatic control transfer(V2 <-> I2 or V . I <-> I2 )

Current recalibration set by potentiometer on front panel.

• Burst mode, 16 cycle base:Current limit with fixed threshold, set by potentiometer on front panel.

Calibration A control signal is available in V . I control for powerand current calibration and for maintenance.

Transient current limit Option to control transformer primaries in Burst mode: • Transformer magnetisation firing angle ramp on first

firing and after firing is stopped for 5 seconds ormore.

• Delay on first firing set by potentiometer on frontpanel.

For all loads in Phase Angle firing: Safety ramp with each change of setpoint.

Signalling Electronics supply present: green ‘ON’ LED.

Thyristor firing request: green ‘HEAT’ LED.

Identification


ALARMS (Options)

Type 1 alarms (Options)Serious alarms Total load failure and thyristor short circuit detection(GRF option)

Signalling Red ‘GRF’ LED and alarm relay contact

Diagnostic alarm Partial load failure detection. (DLF option)

Signalling Orange ‘GRF’ LED and alarm relay contact.Settings Monitoring diagnosis, alarm adjustment and resetting

using push button on front panel.Sensitivity Detects the failure of at least one heating element for

six identical elements connected in parallel.Extension The DLF option includes the GRF serious alarm

monitoring.

Over-temperature alarm For all fan-cooled units (≥ 125 A), the unit cuts out if thetemperature threshold is exceeded.

Signalling Red ‘T°’ LED if one of the I2, VI or CL alarms orregulation options is selected.Alarm relay contact with any one alarm.

Type 2 alarms (Option)Over-current alarm Cut-out if current threshold exceeded(ICO Option) Only available for Zero crossing firing with DLF option

(except for Short wave infrared elements, transformersand codes VICL and V2CL)

Two alarm thresholds: instantaneous current and rms current.

Simultaneous current threshold adjustable from 20 to100% using potentiometer on front panel.

Signalling: Red ‘ICO’ LED and alarm relay contact. Acknowledged by logic input.

Alarm relay Available with one of the Alarm options.The relay contact (0.25 A/230 Vac; 32 Vdc) is either openon alarm or closed on alarm depending on the product code.

Eurotherm’s policy of continuous product improvement and development means that the specifications in this document maybe modified without prior notice.

Identification


Protection Electrical protection IP20 without adding additional protection.Thyristors Varistor and RC snubber

High speed fuse: • rating ≤ 100 A: external (see code)• rating ≥ 125 A: internal.

No fuse for Short wave infrared elementsin Burst mode and Single-cycle firing, or Phase angle without Current limit.

MountingMounting type Attachment plate fixed to unit:

• on symmetrical EN50022 DIN rail or • bulkhead mounting

(for ratings ≥ 125 A: bulkhead mounting only).

ALLOWABLE CURRENT DEPENDING ON TEMPERATUREThe nominal current (IN) is defined for an ambient temperature of 45°C.For other temperatures see figure 1-5.

20

20

40

60

80

70 (°C) 60400

100IN =100A

IN =80A

IN =16A

IN =63A

Ieff (A)

IN =25A

IN =40A

Figure 1-5 Allowable current depending on ambient temperature

2. Nominal voltage Code

100 volts 100V115 volts 115V120 volts 120V127 volts 127V200 volts 200V230 volts 230V277 volts 277V400 volts 400V460 volts 460V480 volts 480V500 volts 500V690 volts 690V*

Ratings

7. Internal EMC filter Code

Phase angle or ratings ≥ 125 A: no filter XXXX

Burst mode or single-cycle16 A to 40 A: filter as standard FILT63 A to 100 A: with filter FILT

no filter NONE

5. Thyristor fuse Code

Fuse without fuse blown microswitch FUSEFuse with fuse blown microswitch MSFUNo fuse Short wave infrared elements

(Burst mode or single-cycleor Phase angle without limit) NONE

3. Power supply for electronics Code

Self-powered (standard)(100 V to 500 V only) SELF

External 115 V supply 115V

External 230 V supply 230V

Identification

7100A User Manual1

7100A CODING: 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 /

* Available later

9. Manual language Code

French FRAEnglish ENGGerman * GER

4. Fan power supply Code

≤ 100A: No fan XXXX≥ 125A:

- 115 V fan and 115 V or SELF electronics 115V

- 230 V fan and 230 V or SELF electronics 230V

10. Selected options Code

Base version: No options, Standard V2 control End of code NONE

Version with options:Selection of options YES

Basic selection6. Firing mode Code

Phase angle PA

Burst mode:base time 16 cycles C16base time 64 cycles C64

Single-cycle: 1 base cycle FC1Advanced single-cycle: 1 base cycle

non-firing by half cycles ASC

8. Input Code

Analogue signal:current from 0 mA to 20 mA 0mA20current from 4 mA to 20 mA 4mA20voltage from 0 V to 5 V 0V5voltage from 0 V to 10 V 0V10

Ratings Basic selection

1. Nominal current Code

16 amps 16A25 amps 25A40 amps 40A63 amps 63A80 amps 80A100 amps 100A125 amps 125A*160 amps 160A*200 amps 200A*250 amps 250A*315 amps 315A*400 amps 400A*500 amps 500A*630 amps 630A*

14. Load type Code

With DLF option: Short wave infrared SWIRLow temperature coefficient load LTCL

Without DLF option or High temperature coefficient load XXXX

Communication and Certification

Options for Phase Angle 11. Control options Code

Voltage control (V2) V2Current control (I2) I2 Control transfer V2 <-> I2 V2I2Control transfer V x I <-> I2 VII2

Open loop OL

Options for Burst / Single-cycle

Identification


11 / 12 / 13 / 14 / 15 / 16 / 17 / 18 / 19 Options

15. Type 2 alarm (with DLF option) Code

Over-current alarm except codes SWIR, XFMR, VICL and V2CL ICONo over-current alarm NONE

15. Type 2 alarms Code

No over-current alarm XXXX

16. Alarm relay contact Code

With alarm option:Contact closed on alarm NCContact open on alarm NO

Without alarm option XX

11. Control options Code

Voltage control (V2) V2

Burst firing C16 only:Voltage control (V2) and

Current limit V2CLPower control (V x I) and

Current limit VICL

12. Delay on first firing Code

Burst firing C16 or C64: Transformer primary XFMROther configurations NONE

Single-cycle (FC1 and ASC) XXXX


Serious Alarms: Thyristor short-circuit, Total Load failure, over-temperature for ratings ≥ 125 A GRF

Partial load failure and Serious Alarms DLFNo alarms NONE

12. Delay on first firing Code

No delay on first firing XXXX

14. Load type Code

With DLF option: Short wave infrared SWIRLow temperature coefficient load LTCL

Without DLF option or High temperature coefficient load XXXX


Serious Alarms: Thyristor short-circuit, Total Load failure, over-temperature for ratings ≥ 125 A GRF

Partial load failure and Serious alarms DLFNo alarms NONE

16. Alarm relay contact Code

With alarm option:Contact closed on alarm NC Contact open on alarm NO

Without alarm option XX

17 / 18 Communication options Code

Available later NONE

19. Certification option Code

No certificate of ‘Compliance with Order’ NONECertificate of ‘Compliance with Order’ CFMC

EUROTHERM Worthing, England Tel : (+44) 1903 268500 Code: 7100A 63A/230V/SELF/XXXX/MSFU/C16/FILT/0V5/ENG/YES/VICL/ NONE/DLF/LTCL/NONE/NO/NONE/CFMC

Serial number : UK35048 - 1 - 2 - 02 - 02 Made in France

63 A 230 V @45°C Input 0 - 5 V

PO N° : 11826 Safety instructions : see user manualExternal Fuse Code FUSE : CS173087U080 or MSFU : CS176461U080

Location of head office

Fuse position(external or internal)

Eurotherm reference for fusewith or without microswitch depending on code

(except for short wave infrared elements)

Productcode

Source of safety instructions:user manual

RatingNominal voltage

Input

Serial numberManufacturing date

Customer ordernumber

Identification


IDENTIFICATION LABELAn identification label, giving full information about the characteristics of the powerthyristor unit and the product identification code, is affixed to the left hand side of the unit.

The example below shows a label corresponding to a 7100A power thyristor unit with currentrating 63 A, nominal voltage 230 V and self-powered electronics.

The base options are as follows:- fuse with fuse blown microswitch - Burst mode firing, base time 16 cycles- internal EMC filter- 0 - 5 Vdc input- manual in English.

Options:- power control with current limit- diagnostic alarm for low temperature coefficient resistive load

with alarm relay contact open on alarm.

The unit’s certificate of compliance with the order must be supplied.

Figure 1-6 Typical identification label (correspn-oonds to coding example)


Installation

Chapter 2

INSTALLATIONContents Page

Safety during installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3

Types of mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3Attachment plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3Mounting on DIN rails . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4Bulkhead mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6Power connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6Connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-7

Control connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8Control terminal blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8Control signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9Power supply for electronics . . . . . . . . . . . . . . . . . . . . . . . . . .2-10Alarm relay contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10Acknowledgement signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10

Installation


Chapter 2 installation

SAFETY DURING INSTALLATION (MOUNTING AND WIRING)

Danger!• 7100A power thyristor units must be installed and wired by qualified staffauthorised to work on low voltage industrial electrical facilities.

• Units must be installed in a fan-cooled cabinet, to ensure that condensation andpollution are excluded, with a class of at least 2 according to IEC 664.We recommend fitting fan-cooled cabinets with a fan failure detection device or athermal safety cut-out.The cabinet must be closed and connected to the protective earth according toIEC 60364 or applicable national standards.

• Units must be mounted with the heatsink positioned vertically, and with noobstructions above or below the unit which could reduce or hamper air flow.If several units are fitted in the same cabinet, arrange them such that air from oneunit is not drawn in by the unit above.Leave a gap of at least 10 mm between adjacent units.

`

Important!• Nominal currents correspond to use at ambient temperatures of no more than45°C. Overheating may cause incorrect operation and may even lead to componentsbeing damaged.

Danger!• It is the user’s responsibility to wire and protect the facility according to bestpractice and applicable standards.A suitable device, ensuring that the unit can be electrically isolated from thesupply, must be installed upline to enable work to be performed safely.Conductor cross-sections should comply with IEC 60943.Only use copper cables and wires rated for use at 75°C.

• Before connecting or disconnecting the unit check that power and control cablesand leads are isolated from voltage sources. The protective earth must be connected before any other connections are madeand should be the last cable to be disconnected. The protective earth connection terminal is marked with the symbol

Important!• To ensure that 7100A power thyristor units comply with ElectromagneticCompatibility requirements, ensure that the panel or DIN rail to which they areattached is correctly grounded.The ground connection, designed to ensure ground continuity, is not in any waya substitute for the protective earth connection.

!

!


Installation

MOUNTING

TYPES OF MOUNTING

Two types of mounting are possible:• DIN rail mounting or• bulkhead mounting with screws.

ATTACHMENT PLATE

The attachment plate, shipped fitted to the rear of the 7100A power thyristor unit, is used:

• to clip the unit to a DIN rail, or • to screw the unit to a bulkhead.

The attachment plate has:• attachment holes for bulkhead mounting, and• two fixed hooks and two mobile hooks for clipping to a DIN rail.

(the mobile hooks are moved using a catch and spring).

Current DIN rail mounting Bulkhead mounting rating

Attachment plate DIN rail Attachment plate Screws

16 A to 63 A One vertical One EN50022 One vertical 2 x M4plate symmetric rail plate

80 A and 100 A Two horizontal Two EN50022 Two horizontal 4 x M4plates symmetric rail plates

≥ 125 A Not applicable To be defined later

For DIN rail mounting:

• fix one symmetric DIN rail (rating 16 A to 63 A) or two rails (rating 80 A and 100 A), inaccordance with the unit dimensions and safety recommendations.• bring the unit up against the rail, engaging the two fixed hooks• push the unit against the rail• clip the unit onto the rail using the mobile hooks, ensuring that they are properly engaged.

To detach the unit:• move the mobile hooks downwards by pulling on the catch• unclip the unit from the rail.

Table 2-1 Attachment details for both mounting types

Installation


Figure 2-1 Attaching the 7100A power thyristor unit to a DIN rail (16 A to 63 A, rear view)

Attachment hooks

Mobile attachment hooks

EN50022DIN rail

Catch to move mobile hooksdownwards

Attachment plate

164

82

Mobile attachment hooks

Catch to move mobile hooksdownwards

Lower attachment plate

220

125

EN50022DIN rails

Upper attachment plate

Attachment hooks

Figure 2-2 Attaching the 7100A power thyristor unit to DIN rails (80 A and 100 A, rear view).

DIN RAIL MOUNTING


Installation

Figure 2-3 Bulkhead mounting using an attachment plate (16 A to 63 A, rear view)

Attachment plate15

6 ±

0.5

164

For M4 screw

For M4 screw

BULKHEAD MOUNTING

Lower attachmentplate

210

± 0.

5

Upper attachmentplate

For 2 M4 screws

220

80 ± 0.5

For 2 M4 screws

Figure 2-4 Bulkhead mounting using an attachment plate (80 A and 100 A, rear view).

Installation


WIRING

POWER CONNECTIONS

Table 2-2 Power connection details for ratings from 16 A to 100 A

Rating Terminal capacity Torque Stripping lengthA mm2 AWG Nm mm

16 to 25 2.5 to 6 13 to 9 1.2 1340 to 63 6 to 16 9 to 5 1.8 1380 to 100 16 to 35 5 to 2 3.8 20

General (Ratings from 16 A to 100 A)

7100A power thyristor units with current ratings up to 100 A are fitted with:

• one channel controlled by thyristors• an internal busbar for directly connecting the load to the power supply (direct channel,

not controlled by thyristors).

The wiring diagram for this range of standard current ratings is shown in figure 2-5:

• terminals U1 (controlled channel) and V1 (direct channel) on the power thyristor unitmust be wired to the supply network

• terminals U2 (controlled channel) and V2 (direct channel) on the power thyristor unitmust be wired to the load

The protective earth terminal PE (marked with the earth symbol) must be wired to theprotective earth (see section ‘Safety during installation’).

Conductor cross-sections should comply with IEC 60943.


Installation

CONNECTION DIAGRAM

The power connection to 7100A units is between one phase and neutral or between twophases depending on the nominal voltage for the thyristor unit.

Figure 2-5 7100A power thyristor unit power and input signal connections(rating ≥ 100 A, no options, self-powered electronics)

Ph N / Ph2

Charge

Supply protection andcut-out, installed by user

Thyristor protectionfuse

Protective earthconnection

Internal power wiringdiagram

Control terminalreferences

Controlled channel terminal

(supply side)

Direct channelterminal

(supply side)

Protective earthterminal

Signal inputterminal block

Controlled channelterminal

(load side)

Direct channelterminal

(load side)

ON

HEAT

AN

A.IN

31 0

VA32

RI

33 5

VA

7100A100 A / 230 V

EUROTHERM

PEV1

V2U2

U1

ε

U1 V1 PE

U2 V2

Installation


Control terminal blocks

Table 2-3 Description of control terminal blocks

The control terminal blocks are plug-in screw connectors.

The terminal blocks available depend on the power thyristor unit version and the selectedoptions in the product code.

The terminals and numbers are marked on the front panel for available terminal blocks.

The table below gives details of all terminals and terminal blocks.

Version Terminal Terminal description Terminal Torqueblock name No. Name Purpose capacity

mm2 AWG Nm

Base ANA.IN 31 0VA 0 V for analogue signalsor 32 RI ‘+’ for analogue signals 1.5 16 0.5

Options 33 5VA Internal analogue 5 V supplyAUX 16 230 230 V aux. supply (except SELF) 17 115 115 V aux. supply 2.5 14 0.7

18 N Neutral or second phaseOption DIG.IN 61 0VD 0 V logic signal

ICO 62 ACK Acknowledgement 1.5 16 0.563 5VD 5 V internal logic

Alarm ALARM 71 1a Alarm relay 2.5 14 0.7options 72 1b contactVICL or ADJ.CAL 66 0VC 0 V calibration 1.5 16 0.5or VII2 67 HRC Calibration controloption

CONTROL CONNECTIONS

Terminal blocks on the underside of the 7100A power thyristor unit are used to connect:• the control signals (analogue and logic)• the auxiliary or electronics supply• alarm relay and acknowledgement contacts

Examples of connecting the input signals, external electronics supply and alarm andacknowledgement contacts are shown below.

The wires used should be stripped for a length of 6 to 7 mm.


Installation

Figure 2-6 Control signal connection (self-powered unit without alarms)a) external signal, e.g. from Eurotherm series 2000 controllerb) manual command from external potentiometer .

AN

A.IN

31

0VA

32

RI

33

5VA

Controlsignal

connector

10 kΩpotentiometer

For input code0V5 only

0 V 0%

100%internal +5 V

(analogue signals)

0 V

+ Analoguecontrol signal

a) b)

AN

A.IN

31

0VA

32

RI

33

5VA

ON

HEAT

ON

HEAT

Control signalThe analogue control signal terminal block is labelled ANA.IN.

The input available corresponds to the input type selected in the product code (voltage orcurrent and level of values). The signal must be connected between terminals 32 and 31.

A typical external signal connection is shown on figure 2-6a.

Figure 2-6b shows how to use the internal 5 V voltage (terminal 33 labelled 5VA) for manualcontrol with an external 10 kΩ potentiometer.

Important!

The control signal input is polarised. The ‘+’ of the control signal must be connected to terminal 32 (labelled RI).!

Installation


AN

A.IN

31

0VA

32

RI

33

5VA

Auxiliary supplyconnector

(except self-powered)

Non-standard supply or > 500 V Controlterminal

references

A

UX

16 2

3017

18

N

1 Afuses

230 V

Figure 2-7 Typical 230 V auxiliary power supply connection

Power supply for electronicsThe power supply for the electronics (auxiliary supply) may be either

• internal (self-powered, code SELF) or • external, 115 V or 230 V depending on the product code

Only one terminal (16 for 230 V or 17 for 115 V) is available depending on the product code.Terminal 18 (marked N) must be connected to the neutral of the external supply or to thesecond phase (if the supply is taken between 2 phases).

The external supply must be in phase with (or the opposite phase) the line connection.

Alarm relay contact (alarm option)If one of the alarm options is fitted (Type 1 or Type 2), a relay contact is available on the ‘ALARM’ terminal block, between terminals 71 and 72 (see figure 2-8).

The type of contact (closed or open on alarm) is determined by the product code.Contact switching capacity: 0.25 A (maximum 250 Vac or 30 Vdc).

Alarmacknowledgement

connector

ALA

RM71

1a

72

1b

DIG

.IN61

0V

D62

ACK

63 5

VD

AN

A.IN

31 0

VA32

RI

33 5

VA

HEAT

Acknowledgement bycontact or

push button

External user supplyfor alarm acknowledgement

DIG

.IN61

0V

D62

ACK

63 5

VD

0 V

+ 5 V Alarm relay

contact

Figure 2-8 Typical alarm relay contact and external acknowledgement connections

Acknowledgement signal (ICO option)With the ICO option, Over-current and Partial or Total load failure alarms may beacknowledged with a +5 V signal by connecting a contact between terminal 63 (5VD internal)and an ACK logic input (terminal 62) available on the ‘DIG.IN’ terminal block. An external 5 V supply may be used for this acknowledgement (see figure 2-8).

Note: The DLF alarm can also be reset with the ‘CHK/SET’ push button.


Firing modes

Chapter 3

FIRING MODESContents Page

General and signalling (green LEDs) . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2Burst mode (codes C16 or C64) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

Firing delay (code XFMR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4Single-cycle (code FC1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5Advanced single-cycle (code ASC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6Phase angle (code PA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7Safety ramp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8

Ramp on start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8Magnetisation ramp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8

Firing modes


Chapter 3 Firing modes

GENERAL AND SIGNALLING (green LEDs)

7100A power thyristor units can be ordered with one of the following thyristor firing types:

• thyristor firing angle variation (‘Phase angle’, code PA)

• a series of network cycles with zero-crossing firing (‘Burst mode’, codes C16, C64, FC1, ASC)

The firing type is marked on the unit’s front panel (table 3-1) further to the product code.

Two indicators (green ‘ON’ and ‘HEAT’ LEDs) are included on the front panel in allversions, either base or with options.

The indicators correspond to the thyristor firing mode as shown in the table below.

LED labelling Description

Power supply for electronics

Thyristor firing request in ‘Burst mode’, ‘Single-cycle’ and ‘Advanced single-cycle’ modes

Thyristor firing request in ‘Phase angle’ mode

Table 3-1 Firing modes and base LEDs on front panel

ON

HEAT

HEAT

During normal operation with zero-crossing switching, the ‘HEAT’ LED flashes to match thethyristor firing periods.

In normal operation in ‘Phase angle’ mode, the ‘HEAT’ LED varies in brightness depending onthe firing angle, with maximum brightness during full firing.

The control system adjusts the modulation time to retain the same precision for all dutyratios η (power requested).


Firing modes

BURST MODE (codes C16 or C64)

‘Burst mode’ firing is a proportional cycle which delivers a series of whole supply cycles tothe load.

Thyristor firing and cut-off is synchronised with the supply and occurs at zero crossing.

t

Loadvoltage

TM TF TNF

Thyristor firing in ‘Burst mode’ can be described by the firing time (TF), non-firing time(TNF) and modulation time (TM) where TM = TF + TNF

The power delivered to the load is defined by the duty ratio η = TF / TM

Firing in ‘Burst mode’ is defined by the Base Cycle Time (TB).The Base Cycle Time is equal to the number of cycles firing at 50% of the duty ratio (or 50%of the power supplied to the load) : TB = TF = TNF.

The Base Cycle time is equal to 16 cycles for code C16 and 64 cycles for code C64.

Figure 3-1 Thyristor firing in ‘Burst mode’

TM

100 %50 %0

2 TB

4 TB

6 TB

8 TB

10 TB

25 % 75 %

TB

TF = TNF = TB

Modulation time

Duty ratio η

Figure 3-2 ‘Burst mode’ modulation time depending on setpoint

Firing modes


Figure 3-3 Switching with inductive load, at zero crossing (a) and with delay (b)

FIRING DELAY (XFMR option)

In ‘Burst mode’ firing, the thyristors are fired at zero to avoid sharp current rises.

For an inductive load (e.g. transformer primary), switching the thyristors at zero crossinggenerates transient over-currents (see figure 3-3a).This transient could cause the high speed thyristor protection fuse to blow in certain cases.

To avoid the over-current, the first thyristor firing must be delayed relative to thecorresponding zero (figure 3-3b).

The delay before thyristor firing starts may be adjusted with the ‘DLY’ potentiometeravailable with the XFMR option (C16 or C64 ‘Burst mode’).

ϕ0

ωt

vload

Transientover-current

0

ωt

Delay angle (0° to 90°)

a) b)

iload

vload

iload

Without transient

The ‘DLY’ potentiometer is a 3/4 turn type, andis used to set the delay angle for the first firing:

• from 0° (turned anticlockwise to end stop) • to 90° (turned clockwise to end stop).

The factory setting for the first firing delaywith the XMFR option is 70° (typical value formost applications).

The optimum firing angle can be adjusted withthe ‘DLY’ potentiometer to match the cos ϕ ofthe load.

Delay angle

70°DLY

0° 90°

Figure 3-4 First firing delay adjustmentpotentiometer


Firing modes

t25%

power

TM TF TNF

t

t

TM TF TNF

TM TF TNF

50%power

75%power

TNF = 3 TF

TNF = TF = TB

TF = 3 TNF

Figure 3-5 Firing in ‘Single-cycle’ mode for various duty ratios

SINGLE-CYCLE (code FC1)

‘Burst mode’ firing with a single firing or non-firing cycle is known as ‘Single-cycle’.

For example, with a setpoint of 50% (corresponding to a duty ratio η = 50%) the modulationcomprises 1 firing cycle and 1 non-firing cycle.

For duty ratios η < 50% the firing time remains unchanged (1 cycle) and the non-firing timeincreases.

For duty ratios η > 50% the non-firing time remains unchanged (1 cycle) and the firing timeincreases.

Firing modes


t

66.6 % power(TF = 2 TNF)

TM TC TNC

t

TM

TF TNF

Standard single-cycle (TF or TNF = 1 cycle)

Advanced single-cycle (TNF = 0.5 cycle: TM decreases)

66.6 % power(TF = 2 TNF)

Comparison of firing in ‘Single-cycle’ and ‘Advanced single-cycle’ modes Example: 66.6% duty ratio (66.6 % of maximum setpoint)

ADVANCED SINGLE-CYCLE (code ASC)

In order to reduce power fluctuations during firing time, ‘Advanced single-cycle’ thyristorfiring mode uses:

• a whole number of cycles for firing, and• a whole number of half-cycles for non-firing.

For duty ratios η< 50%:- the thyristor firing time is set to one cycle- non-firing occurs for half-cycles.

For duty ratios η > 50%:- the non-firing time is set to half a cycle, - firing occurs for whole cycles.

By using half-cycles for non-firing time, the modulation time is reduced compared withstandard ‘Single-cycle’ mode, which is equivalent to burst mode with one cycle.

‘Advanced Single Cycle’ mode (Code ASC) reduces flicker on short wave infrared elementsand is thus less annoying on the eyes.


Firing modes

Figure 3-8 Progressive variation of firing when setpoint changed

θ

π

θωt

Load voltage

θπ

ωt

Supplyvoltage

Load voltageSupplyvoltage

a) b) Inductive loadResistive load

CurrentCurrent

PHASE ANGLE (Code PA)

In ‘Phase angle’ mode the power delivered to the load is controlled by firing the thyristors over apart of each supply half-cycle.

Figure 3-7 Load voltage and current in ‘Phase angle’ firing mode

The thyristor firing angle (θ) varies with the setpoint signal.The power delivered is not a linear function of the firing angle (θ) .

‘Phase angle’ mode allows the firing angle to be progressively varied on start-up, acting as asafety ramp.The safety ramp (approx. 16 cycles) is applied the first time firing starts (after powering upthe thyristor unit) or after firing stops for 5 seconds in ‘Phase angle’ mode (codes V2I2 andVII2) and ‘Burst mode’ (codes C16 + VICL or V2CL) .

In ‘Phase angle’ mode, with each change of setpoint (positive or negative), the firing angle ischanged to its new value progressively (see figure 3-8).

Progressive changeof firing

FiringSetpoint 1

FiringSetpoint 2

Setpoint 1 Setpoint 2 Setpoint 3

Progressive changeof firing

Firing modes


t

Load voltageSupply voltage

Magnetisation gradient Delay for first firing

Figure 3-10 Transformer primary power-up in ‘Burst mode’ (XFMR option)

Magnetisation ramp (XFMR option) For inductive loads, the safety ramp prepares initial magnetisation.To avoid saturating transformers on power up, the safety ramp acts as a magnetisation ramp.With the XFMR option, after this ramp, the first ‘burst mode’ firing cycle starts with the firstfiring delay.

SAFETY RAMPThe safety ramp involves progressively increasing the thyristor firing angle in order toapply the voltage (and current) to the load smoothly and thus reduce the start-up current ofloads which have a low resistance when cold and inductive loads.

Start-up rampThe start-up ramp is active in the following firing modes:

• ‘Phase angle’ (except for code OL) • ‘16-cycle Burst mode’ with current limit (codes C16 + V2CL or VICL).

The start-up ramp (approx. 16 cycles) is applied on the first firing after the thyristor unit ispowered up and after firing is stopped for more than 5 seconds. The initial firing angle is approx. 12°.After the ramp, the firing angle corresponds to the setpoint in ‘Phase angle’ mode; in ‘Burst mode’ the thyristors fire fully once the ramp is complete.

t

Load currentSupply voltage

Initial firing angle

Figure 3-9 Start-up ramp (resistive loads)


Control / Limits

Chapter 4

CONTROL AND LIMITS Contents Page

Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2Control parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2Input / Output ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

Recalibration of thyristor unit (options) . . . . . . . . . . . . . . . . . . . . . . .4-4Current and power limits (options) . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5

Limit types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5Current limit by transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5Current limit by threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6Power limit by control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7

Current and power limit specifications . . . . . . . . . . . . . . . . . . . . . . .4-8

Control / Limits


Chapter 4 Control and limits

CONTROL

Control parameters

7100A power thyristor units use one of the following control parameters:• rms load voltage squared V2

• rms load current squared I2

• apparent power delivered to load P = V . I (for resistive loads)

For a constant resistive load, the percentage value of all control parameters, represents theactive power (as a percentage) delivered to the load by the power thyristor unit.

For the Base version (with no options) the standard control parameter is V2.

The control parameter must be selected when ordering and forms part of the product code.

Firing mode Control Control Use code code parameter

C64, FC1, ASC V2 V2 Compensation of supply variations

C16 V2 V2 Compensation of supply variationsV2CL V2 With current limitVICL V.I Power control with current

and power limits

PA I2 I2 Current squared controlV2 V2 Compensation of supply variationsV2I2 V2 or I2 Voltage squared control with

automatic transfer V2 <-> I2

VII2 V.I or I2 Power control with automatic transfer V.I <-> I2

OL Open loop Direct image of setpointwithout control

Table 4-1 Control parameters

With the Base version or with V2 or V2CL options (without DLF) the voltage is a simulatedvalue. This control mechanism compensates for variations in the supply voltage.The thyristor units are factory-calibrated for VN.

The current and voltage values used in the control system for all other options are measuredvalues. Apparent power control (P = V . I) also uses measured values.


Control / Limits

INPUT / OUTPUT RATIO

The value of the control parameter is proportional to the analogue setpoint signal between 4% and 96% of the scale.

The ratio between the setpoint and the control parameter (V2 , I2 , P = V.I) is linear. The dotted line on figure 4-1 shows the rms current (and rms voltage) depending on thesetpoint.

Four types of input signal are available in the thyristor unit product codes:0 - 20 mA or 4 - 20 mA, 0 - 5 V or 0 - 10 V.

Notes: • The scale for the 4-20 mA signal (code 4mA20) is equal to 16 mA.• In power control, if the load resistance or the supply voltage change, the same

power value is obtained with other current and voltage values.

The ratio between the setpoint (input signal) and the thyristor unit output value can be changed by recalibrating the control loop using the

‘I lim’ and ‘VI lim’ potentiometers on the front panel.

This is possible for the following control types: • I2 in ‘Phase angle’ firing mode • V.I in ‘Phase angle’ and ‘16-cycle burst mode’

Important: The control loop may be recalibrated by current or power limit functions (seenext section).

100%

75

50

25

0 40 60 80 100 % Setpoint20

100 %96%Control

parameter

0 % 4%

V2rms , I

2rms or V.I

Vrms or Irms

Figure 4-1 Ratio between control system input and output

For recalibration with the VICL or VII2 options:

1. Turn the ‘VI lim’ potentiometer fully round in thedirection of the arrow (nominal power calibration).

2. Use the ‘I lim’ potentiometer to set the Imax valuebetween 20% and 100% (control signal: 0.2 V to 1 V).

3. Use the ‘VI lim’ potentiometer to set the (V.I)max value.Check the resulting power setting on terminal HRC(accounting for Imax) .

Example: Current setting Imax: HRC = 0.8 V; Setting resulting from (V.I)max: HRC = 0.72V.

The unit is calibrated to (80% ± 2%) IN and (72% ± 2%) PN.

Control / Limits


RECALIBRATION OF THYRISTOR UNIT (options)The thyristor units are factory-calibrated to their nominal value: IN and PN = VN

. IN

The limits can be adjusted by recalibrating the values with the ‘I lim’ (multi-turn) and‘VI lim’ (3/4 turn) potentiometers on the front panel.

The ‘I lim’ current calibration potentiometer is available:• in ‘Burst mode C16’ with VICL, V2CL or ICO options• in ‘Phase angle’ with VII2, V2I2 or I2 options.

The maximum current may be recalibrated from Imax = 20% to 100% of IN.I L IM

+

VI L IM

+ The ‘VI lim’ power calibration potentiometer is available:• in ‘Burst mode C16’ with VICL option• in ‘Phase angle’ with VII2 option.

The power may be recalibrated from 50% to 100% of (VN. Imax).

With the VICL or VII2 options, thyristor unit recalibration (during firing or not) may beassisted by measuring the calibration control signal, available on the ‘ADJ.CAL’ terminalblock. The value of the DC voltage between terminals HRC and 0VC always represents:

• the image of the maximum recalibrated power (1 V corresponds to 100% PN)

• the image of the maximum current (if the ‘VI lim’ potentiometer is turned fully right). The control signal is equal to 1 V if calibrations are nominal (Imax= IN and Pmax = PN). The minimum value of the signal is 0.1 V (Imax = 20% and ‘VI lim’ set to 50% of VN . Imax).

ADJ.C

AL66

0VC

67 H

RC

AN

A.IN

31 0

VA32

RI

33 5

VA

VFigure 4-3 Calibration control

0 100 % setpoint

(V.I) or I2

nominalcalibration

Nominal calibration 100 %

(V.I) or I2

afterrecalibration

UN.IN or I2

N

Recalibration

I2max

(V.I)max

VI L IM

+

I L IM

+

Setpoint

Figure 4-2 Recalibration of the thyristor unit


Control / Limits

CURRENT AND POWER LIMITS (Options)

LIMIT TYPESThe current and power limit types depend on the firing mode:

• current limit by transfer to I2 control (‘Phase angle’)• current limit by threshold (‘Burst mode C16’)• power limit by control (‘Phase angle’ and ‘Burst mode C16’).

The limits are set by recalibration potentiometers (see previous page).

When the transfer or threshold limits are active, the ‘...I lim’ LED on the front panel flashes (the two-colour LED turns green).

A ... I L IM

+I LIM

Current calibrationpotentiometer

Green LEDFlashing: current limit active

Figure 4-4 Indication that current limit by transfer or threshold is active

Current limit by transfer (code V2I2 or VII2)

This limit involves automatically transferring from the existing control parameter (V2 or V.I) to the load current squared I2.

I2 control by variation of the firing angle limits the load current, taking into account therecalibration of the thyristor with respect to current.

Current limit by transfer to current squared control I2 is available in ‘Phase angle’ firingmode and is associated with controlling parameters V2 and V.I (codes V2I2, VII2).

The automatic transfer occurs after the recalibrated values are compared at each setpoint.The values corresponding to each setpoint (in %) are designated by: I2

max (%); V2 (%);

V.Imax(%)

Automatic transfer V2 <-> I2 or V.I <-> I2 occurs if:I2

max (%) > V2 (%) for V2I2 control

I2max (%) > V.Imax (%) for VII2 control.

Control uses the larger of the two parameters: I2 or V2 (or V.I).

Reminder: the values Imax and V.Imax are set by the thyristor unit current ‘I lim’ andpower ‘VI lim’ recalibration potentiometers (see figure 4-2).

Control / Limits


Current limit by threshold (codes V2CL or VICL)

Limit by threshold is available in ‘Burst mode’ thyristor firing with 16 cycle base time (codeC16) and is associated with control of V2 or V.I (codes V2CL or VICL).

Limit by threshold works by varying the thyristor firing angle to maintain the rms currentin the load at a value below the preset threshold.

The maximum current threshold Imax can be adjusted using the ‘I lim’ calibrationpotentiometer to between 20% and 100% of the nominal current IN.

Limit by threshold is active if the rms current in the load, calculated over one supply cycle,is greater than or equal to the maximum value set by the potentiometer:

Irms ≥ Imax

While the current limit is active, the ‘burst mode’ duty ratio is increased to maintain thecontrol parameter (V2 or V.I) equal to the setpoint.

Load current

End oflimit

Burst mode and phase angle variation current limit Burst modefiring

I ≤ Imax

I > Imax

Figure 4-5 Example of limit by threshold: firing angle reduced in ‘Burst mode’ (Codes: C16 + VICL or V2CL)


Control / Limits

Power limit by control (codes VICL or VII2)

Power limit by control changes the ratio between the power delivered to the load and thesetpoint.

This is done by recalibrating the control loop.

The power limit is available in V.I control:• in ‘Burst mode’ with 16 cycle base time (codes C16 + VICL) • in ‘Phase angle’ mode (codes PA + VII2).

Limit by control adjusts: • the duty ratio in ‘Burst mode’• the firing angle in ‘Phase angle’ mode.

The power control loop is recalibrated using the ‘VI lim’ potentiometer to adjust the ratiobetween V.I and the setpoint from 50% to 100%.

The setting takes account of current recalibration set by the ‘I lim’ potentiometer. Current recalibration should be performed before power recalibration (see Recalibration, page 4-4).

0 IN

VN

Iload

Vload

RN

0.7 VN

Imax = 0.7 IN

Nominal calibration: Pmax = PN = const

Power recalibrated to Pmax= 50% PN = const

Setpoint 100%

Controlzone

I L IM

+

VI L IM

+

Recalibration of powercontrol

(50% to 100% PN)

Recalibration of thyristor unit current

(20% to 100% IN)

Figure 4-6 Power limit by control

Control / Limits


C16 V2CL

VICL

PA V2I2

VII2

I lim Thyristor unit current recalibration:set threshold

Imax

I lim Thyristor unit current recalibration:set threshold

Imax

VI lim Recalibration ofpower control loop: set ratio betweenV.I and setpoint

I lim Thyristor unit current recalibration:set ratio between Imax (%) and setpoint

I lim Thyristor unit current recalibration:set ratio between Imax (%) and setpoint

VI lim Recalibration ofpower control loop: set ratio betweenV.I and setpoint

Firing Control Potentiometer Operationmode type Name Action of limit

Table 4-2 Operation of current and power limits

CURRENT AND POWER LIMIT SPECIFICATIONS

The table below summarises the operation of the limits used in the 7100A series powerthyristor units.

Current limit with thresholdif Irms > Imax:

firing angle variation.V2 control in ‘Burst mode’

Current limit with thresholdif Irms > Imax:

firing angle variation.V.I control in ‘Burst mode’

Power limit by control in ‘Burst mode’taking account of (V.I)max

Current limit by transferIf I2

max (%) > V2 (%) : automatic

transfer to I2 control by firingangle variation.

Current limit by transfer. If I2

max (%) > V.I (%): automatic

transfer to I2 control (firing anglevariation).

Power limit by control (firing angle variation) with new ratio between (V.I)max and setpoint


Alarms

Chapter 5

ALARMSContents Page

Alarms (Options) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2Safety mechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2Alarm strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

Types of Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2Alarm actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

Inhibit firing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2Signal alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2Alarm priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2Alarm relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2Memorisation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2

Type 1 alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3GRF option (Serious alarms) . . . . . . . . . . . . . . . . . . . . . . . . . .5-3

Alarm actions with GRF option . . . . . . . . . . . . . . . . . . . . .5-3DLF option (Load failure diagnostic alarm) . . . . . . . . . . . . .5-4

Alarms monitored with DLF option . . . . . . . . . . . . . . . . . .5-4Alarm actions with DLF option . . . . . . . . . . . . . . . . . . . . .5-4Functions of the DLF option . . . . . . . . . . . . . . . . . . . . . . . .5-5PLF diagnostic detection specifications . . . . . . . . . . . . . .5-5

Setting the DLF alarm . . . . . . . . . . . . . . . . . . . . . . . . . .5-5PLF detection conditions . . . . . . . . . . . . . . . . . . . . . . . .5-5PLF detection sensitivity . . . . . . . . . . . . . . . . . . . . . . . .5-5

Functions of DLF alarm push button . . . . . . . . . . . . . . . . . . .5-6Type 2 alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7

Over-current alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7Alarm conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7Alarm Actions, Memorisation, Acknowledgement . . . . .5-7

Alarm diagnostic summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8

Alarms


CHAPTER 5 ALARMS (Options)

SAFETY MECHANISMSThe alarms on the 7100A protect the thyristors and the load against certain types of abnormaloperation and provide the user with information about the type of fault.

• Alarms are not under any circumstances a replacement for personnel protection.• The user is responsible for installing independent safety mechanisms which must

be inspected regularly. Given the value of the equipment controlled by the 7100A,this is strongly recommended.

Eurotherm can supply various types of suitable alarm detector.

ALARM STRATEGY

TYPES OF ALARM7100A thyristor units are optionally fitted with the following two types of alarm:

• Type 1: monitoring of load and thyristors • Type 2: protection against exceeding a current threshold

ALARM ACTIONS

Inhibit firingWhen ‘Over-current’ (type 2 alarm) or ‘Over-temperature’ faults are detected (for 125 A andhigher ratings only), thyristor firing is inhibited (even if the control signal is present) andoperation of the thyristor units is shut down.

SignallingAll faults detected are signalled by illuminating or flashing the corresponding LEDs. TheLEDs are located on the front panel of the thyristor units beneath the product code. TheLEDs present are determined by the options (or combinations of options) selected.

Alarm priorityOnly one alarm is signalled if several faults occur simultaneously.Type 2 alarms, thermal faults and thyristor short-circuits take priority over load faultdisplay.

Alarm relayAll alarms change the position of the Alarm relay contact.Depending on the product code this contact may be:

• open on alarm (code NO) or • closed on alarm (code NC).

The alarm contact switching capacity is 0.25 A (230 Vac or 32 Vdc).

MemorisationType 1 alarms are not memorised. After an alarm has been detected, and once the fault conditions return to normal, alarmsignalling (LED and relay) return to their non-alarm position.Thyristor faults (short-circuits) require the unit to be repaired.Type 2 alarms (‘Over-current’) are memorised and must be acknowledged.

Danger


Alarms

TYPE 1 ALARMS (GRF or DLF option)

GRF OPTION (Serious alarms)With the ‘GRF’ (GRoss Faults or serious alarms) option the following faults are detected:

• Total Load Failure, TLF • Thyristor Short Circuit, THSC • Thyristor overheating, T°

(only for fan-cooled units with current rating of at least 125 A).

Important: The GRF option (detection of Serious alarms) is automatically included with theDLF option

State of LEDs Firing TypicalFault ‘T°’ ‘GRF’ ‘HEAT’ inhibited reaction

red red green time

Total Load Failure Off On On or No 2 s to 5 s(TLF) or Flashing

Thyristor short-circuit (THSC)

Over-temp. for ratings ≥ 125 A On Off Off Yes

Table 5-1 LEDs for serious alarms with ‘GRF’ option

Red LED: "Over-temperature" fault

(ratings ≥ 125 A)

Red LED: "Serious faults"

GRF

T °

Figure 5-1 Layout of front panel LEDs with ‘GRF’ option

Alarm actions with GRF optionWhen a serious alarm is detected:

• the ‘GRF’ LED (and the ‘T°’ LED if a thermal fault occurs) on the front panel are lit • the alarm relay contact is activated.

If an overheating fault is detected, thyristor conduction stops.

Serious alarms are not memorised. The indicators for serious faults (TLF, THSC or T°) detected return to normal (LEDs andrelays in non-alarm position) after the fault condition ceases.

Note: • Thermal faults are signalled by the ‘T°’ LED if one of the alarm options or one ofthe control options (except V2 and OL) is fitted. The unit is protected againstthermal faults whether or not they are signalled.

• Thermal faults are signalled by the alarm relay if one of the alarm options is fitted.

Alarms


DLF OPTION (Load failure diagnostic alarm)

Alarms monitored with DLF optionWith the ‘DLF’ option (Diagnostic Load Failure alarm) the following faults are monitoredand diagnosed:

• Partial Load Failure, TLF)• serious faults (the GRF option is automatically included).

Table 5-2 LEDs for faults with ‘DLF’ option

GRF

DLFCHK

T °

SET

Red LED: "Over-temperature" (≥125 A)Red LED:

"Serious faults"

Orange LED:"Partial load failure" DLF alarm adjustment

and diagnosticpush button

Figure 5-2 Layout of front panel LEDs with ‘DLF’ option

Alarm actions with DLF optionIf a fault (PLF, TLF, THSC or T°) is detected:

• the corresponding LED on the front panel is lit • the alarm relay contact is activated.

State of LEDs Firing TypicalFault ‘T°’ ‘GRF’ ‘DLF’ ‘HEAT’ inhibited reaction

red red orange green time

Partial load failure Off Off Flashing(PLF) On No 1 s to 10 s

Total load failure Off On Flashing or(TLF) Flashing

Thyristor short-circuit Off On Off(THSC)

Over-temperature (T°) On Off Off Off Yes

With the DLF option, the ‘DLF’ LED is used to distinguish between TLF and THSC faults.

With the DLF option, alarms are not memorised. The alarm indicators return to normalafter the fault condition ceases (as with the GRF option, see previous page).

PLF fault signalling (‘DLF’ indicator and relay) can be temporarily excluded from alarms bypressing the ‘CHK / SET’ (Check / Setting) push button. If the fault persists, DLF signalling returns to the alarm position.

If the ICO option is used, PLF and TLF faults can be excluded from alarms using theacknowledgement logic input (see ‘Type 2 alarm’).


Alarms

Functions of the DLF optionWith the DLF option, the load status monitoring circuit detects any abnormal increase in theload impedance, which may be caused by a partial (or total) failure of the heater elements(possibly connected in parallel).

The DLF option includes the following functions:• partial load failure (PLF) detection • automatic PLF detection adjustment • diagnosis of the state of this adjustment and the monitoring circuit • disabling of DLF alarm monitoring• the possibility of using the over-current alarm in ‘Burst mode’ (ICO option)• temporary disabling of DLF alarm signalling

(acknowledgement if ICO option used).

PLF detection is adapted to the load type. The type of load controlled is selected when ordering, with the product code:

• LTCL (Low Temperature Coefficient Load), or • SWIR (Short Wave InfraRed elements)

PLF diagnostic detection specificationsSetting the DLF alarm

Adjusting PLF detection involves calculating and storing the value of the referenceimpedance from the measured rms current and voltage values.

This can be set using the push button on the front panel.The PLF detection setting can only be adjusted automatically (reference impedancerecalculated) in the following conditions:

• rms voltage across load greater than 40% of the nominal voltage • rms load current greater than 30% of the rated current• no over-temperature, over-current or thyristor short-circuit faults.

The PLF detection settings should be adjusted each time the thyristor unit isrecalibrated.

Partial load failure detectionPLF monitoring involves comparing the load impedance with a reference impedancestored during setting (the load impedance is calculated from the rms values measuredcontinuously)

PLF detection is only possible under the following conditions:• rms voltage across load greater than 40% of the nominal voltage, and• rms load current greater than 5% of the rated current.

Partial load failure detection sensitivity

Partial load failure detection sensitivity can be expressed in terms of a maximum numberof load elements connected in parallel for which the unit can detect the failure of oneelement. The DLF diagnostic alarm guarantees that failure of ONE element will be detectedfor SIX identical elements connected in parallel, corresponding to a 20% increase in the loadimpedance relative to the reference impedance.

!

Alarms


Figure 5-3c Disabling PLF monitoring

Disabling

Diagnostic

Setting request

Functions of DLF alarm push button

The push button on the front panel of the unit with the ‘DLF’ option is labelled‘CHK / SET’ (‘Checking / Setting’).

Pushing this push button as shown on the diagrams below sets and diagnoses the status ofthe PLF detection circuit.

CHKSET

Press until DLF LED flashes

4 - 5 s

0t

DLF

DLF

Settingperformed

Settingnot performed

Push button

LED

LED

Figure 5-3a PLF detection setting request

CHKSET

DLF

≤ 3 s

DLF

0t

DiagnosticdisabledDLF

Diagnosticactive

PLF fault

Alarm on Alarm on

Push button

LED

LED

LED

Alarm relay: Alarm off

Press until DLF LED lit

Figure 5-3b PLF monitoring diagnosis

Diagnosticdisabled

> 8 s

0t

CHKSET

DLF

Push button

LED

Press until DLF LED stops flashing


Alarms

TYPE 2 ALARMS (ICO option)Type 2 alarms (Over-current alarm) monitor the maximum current valueThe over-current alarm cuts off the current if a given current threshold is exceeded. This alarm (and option) is known as ICO (Intelligent Chop Off).

Over-current alarm

AvailabilityThe ICO option is available in zero-crossing firing modes (‘Burst mode’ and ‘Single-cycle’)provided the DLF option is fitted. The ICO option is not available for short wave infrared elements and transformers (codeSWIR or XFMR), or in control with current limit (code VICL or V2CL).

Alarm conditionsWith the ICO option an Over-current fault is detected if one of the following twoconditions occurs:• the instantaneous current exceeds a threshold of 150% of the instantaneous rated current

(1.5 √2 Imax)• the rms load current (over 5 consecutive seconds) exceeds a threshold of 110% of the

recalibrated current (1.1 Imax).The instantaneous or rms current threshold can be adjusted with the ‘I lim’ potentiometer during the current calibration phase, from 20% to 100% of the nominal current for thethyristor unit.Alarm Actions, Memorisation, AcknowledgementIf an over-current alarm is triggered, thyristor firing stops:

• at the end of the half-cycle when the instantaneous current threshold is exceeded • after 5 s of continuously exceeding the rms current threshold.

Over-current alarm cut-off is signalled as follows: • the position of the Alarm relay Contact changes • the ‘...ICO’ LED flashes (and turns red).

Important: The ‘ICO’ LED starts flashing as soon as the rms current exceeds thethreshold; i.e. 5 s before current is cut off.

Red LED: "Over-current fault"

Alarm threshold simultaneous adjustment

potentiometer(for rms current

and instantaneous current)

GRF

DLFCHK

A

SET

... ICO I LIM

+

Figure 5-4 Layout of the ‘ICO’ LED and ‘I lim’ potentiometer with the ICO option

The over-current alarm cut-off is memorised. The thyristor unit remains cut off and signalsthe alarm status.The Over-current alarm must be acknowledged by applying +5 V to the ‘ACK’ terminal onthe ‘DIG.IN’ terminal block (logic signal inputs). The internal supply (‘5VD’ terminal) or anexternal source may be used to acknowledge the alarm remotely (see page 2-8).

Alarms


ALARM DIAGNOSTIC SUMMARY

The table below summarises all status LED information needed to diagnose the fault.

GRF

HEAT

T°

DLF

ON

No firingalarm:

Phase angleor

zero crossing

Over-temperature.

Firinginhibited

Thyristorshort-circuit

orTotal

load failure

Partialload failure

Red

Red

Orange

Green

Green

OPTIONS :Type 1 or 2 GRF DLF

Totalload failure

Thyristorshort-circuit

DIAGNOSTIC:

A... ICO ≥125A

Allversions

ICO

Over-current.Firing

inhibited(see page 5-7)

HEAT

Green

Or

Figure 5-5 Diagnosing operation and alarms according to front panel LED status


Maintenance

Chapter 6

MAINTENANCEContents Page

Safety during maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2Thyristor protection fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3EMC filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4

Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4

Maintenance


Chapter 6 MAINTENANCE

SAFETY DURING MAINTENANCEPlease read carefully before commissioning the thyristor unit

Important!• Eurotherm shall not be held responsible for any damage, injury, losses or expenses

caused by inappropriate use of the product or failure to comply with this manual.• Accordingly the user is responsible for checking, before commissioning the unit,

that all the nominal characteristics correspond to the conditions under which it isto be installed and used.

Danger!• The product must be commissioned and maintained by qualified personnel,

authorised to work in an industrial low voltage environment.Users must not attempt to access internal parts.The heatsink temperature may exceed 100°C. The heatsink remains hot for approx.15 minutes after the unit is shut down. Avoid touching the heatsink even brieflywhile the unit is operating.

MAINTENANCE• Every six months, check that the power and protective earth cables are correctlytightened (see ‘Wiring’ section, page 5-6).

• If the load parameters change, the operation of the PLF detection must bediagnosed (see ‘DLF option’ section).

• If a DLF alarm occurs, check the load wiring and condition of contacts.Use the push button to confirm the DLF alarm diagnosis (see page 3-9).

• To ensure that the unit is cooled correctly, the heatsink should be cleaned regularly,depending on how dirty the environment is, as should the fan protection grille forfan-cooled units rated at 125 A or more).

Danger!The thyristor unit should be cleaned only when powered down, at least 15 minutesafter stopping operation.

!


Maintenance

Thyristor protection fuses

The thyristors in the 7100A power thyristor unit are protected against excess currents by ahigh-speed fuse (for all load types other than short wave infrared elements).For current ratings ≤ 100 A the fuse is external.

Important! To use high-speed fuses with short wave infrared elements, please contact yourEurotherm office.

Danger!High-speed fuses do not provide protection for the installation. Upline protectionmust be fitted (non-high-speed fuses, circuit breakers, cut-outs).

The product code specifies whether or not a fuse is present.With the FUSE or MSFU (micro switch fuse) codes, a fuse and fuse holder assembly(corresponding to the current rating) is supplied with the product.

• for code FUSE , the fuse is not fitted with a striker bar.• for code MSFU, the fuse has a striker bar and the fuse holder is fitted with a blown

fuse microswitch.

If the user does not order a thyristor protection fuse or if a short wave infrared load is used,no fuse is supplied (code NONE).

Table 6-1 Fuses without microswitch, recommended for ratings 16 A to 100 A (code FUSE)

Table 6-2 Fuses with microswitch, recommended for ratings 16 A to 100 A (code MSFU)

Important!For all loads (other than short wave infrared elements), using a thyristor protectionfuse other than the recommended fuse voids the product guarantee.!

Rating Fuse Fuse and fuse-holder assemblyreference Reference Dimensions (mm)

H x W x D 16 A CH260024 FU1038/16A 81 x 17.5 x 6825 A CH260034 FU1038/25A 81 x 17.5 x 6840 A CH330054 FU1451/40A 97 x 17.5 x 8663 A CS173087U080 FU2258/63A 128 x 35 x 9080 A CS173087U100 FU2258/80A 128 x 35 x 90

100 A CS173246U125 FU2760/100A 240 x 38 x 107

Rating Fuse Fuse and fuse holder assembly with microswitch reference Reference Dimensions (mm)with striker bar H x W x D

16 A CS176513U020 MSFU1451/16A 110 x 17.5 x 9425 A CS176513U032 MSFU1451/25A 110 x 17.5 x 9440 A CS176513U050 MSFU1451/40A 110 x 17.5 x 9463 A CS176461U080 MSFU2258/63A 127.5 x 35 x 96.580 A CS176461U100 MSFU2258/80A 127.5 x 35 x 96.5

100 A CS173246U125 MSFU2760/100A 240 x 53 x 107

Maintenance


EMC filter (CONDUCTED EMISSIONS)

For installations required to comply with the levels stipulated under the generic standardfor conducted emissions, EN 50081-2, Eurotherm can provide optional internal filters (codeFILT) on units up to 100 A for units with near-zero-crossing firing (‘Burst mode’ and ‘Single-cycle’ firing modes) .

For products which vary the thyristor firing angle (‘Phase angle’ firing mode) Eurothermcan provide external series filters, ordered separately (see codes below).

Series filters are exclusively reserved for applications involving resistive loads for which theresistance does not vary significantly with temperature (up to 10%), controlled directly oron a transformer secondary. Loads for which the resistance varies significantly withtemperature (Molybdenum, Molybdenum bisilicide, Platinum, Tungsten, Silicon Carbide,Glass, etc.) may not be used.

Technical specificationsNominal filter current: 25 A, 63 A or 100 AAttenuation: Class A in accordance with EN 55011, type 1 devices.Line to line supply voltage: 500 Vac (+10%,-15%)Supply frequency: 47 Hz to 63 Hz Voltage drop: ≥ 0.5 Vrms at 100 A (50 Hz)Earth leakage current: ≥ 10 mA at 500 Vac +10% (50 Hz) measured on a pure resistiveload. Depending on the installation the value may be significantly higher in certain cases:

• if the protective earth potential is not referenced to the neutral potential• if the load has a high stray capacitance to earth.

Cooling Natural convection Temperature of use 0°C to +45°C at a maximum altitude of 2000 mStorage temperature -10°C to +70°CAtmosphere for use Non-explosive, non-corrosive and non-conductingHumidity 5% to 95% RH without condensationPollution Degree 2 acceptable, defined by IEC 664

Nominal Reference Code Dimensions Masscurrent (A) (mm) (kg)

25 LA 174936U025 FILTER / MON / 25A / 00 220 x 134 x 100 6.563 LA174936U063 FILTER / MON / 63A / 00 303.5 x 134 x 130 10100 LA 174936U100 FILTER / MON / 100A /00 432 x 180 x 150 24

Mounting7100A units are mounted directly to the front of the filter using the mounting kit (orderedseparately) and the mounting pads provided for standard mounting.

Index

7-1

A PageAdvanced single-cycle (firing mode) 3-6Alarms 5-1

diagnostic alarm (DLF option) 5-4settings, push button 5-5, 5-6sensitivity 5-5

diagnostic summary 5-8over-current (type 2 alarm option) 5-7

acknowledgement / memorisation 5-4, 5-7relay 2-10, 5-2serious alarms (GRF option) 5-3

thermal fault 5-3strategy 5-2

Attaching the thyristor unit 2-3 to 2-5

BBase time / modulation time 3-3Burst firing mode 3-3

CCalibration

control signal 4-4potentiometers 4-4.4-5.4-7.5-7

CE labelling iiiCoding 1-10.1-11Commissioning flowchart ivConnections

auxiliary supply 2-10alarm relay contact 2-10control 2-8, 2-9power and protective earth 2-6, 2-7

Control 1-7, 1-11, 4-1Control parameters 4-2Current and power calibration 4-4Current limit 4-5

by transfer 4-5by threshold 4-6specification of limits 4-8

DDiagnostic alarm 5-8Dimensions 1-6DLF push button 5-6Duty ratio 3-3

EEMC filter iii, 6-4Electromagnetic compatibility (EMC) iiiEurotherm 8-1

FFiring

delay 3–4firing angle variation 3-7modes 3-1zero crossing 3-3

Flowchart (commissioning) ivFuses (thyristor) 6-3

I PageIdentification label 1-12Identification of thyristor unit 1-2 to 1-5Input / Output ratio 4-3Installation 2-1

LLimit type 4-5Load faults 5-2 to 5-6Load type 1-2, 1-6

MMaintenance 6-1Mounting 2-3 to 2-5

OOperation 4-1Options

alarms 1-8, 1-11, 5-1control 1-7, 1-11, 4-1

Overview 1-2 to 1-5

PPartial load failure (PLF) 5-4Permissible current 1-9Phase angle (firing) 3-7Power limit 4-5, 4-7, 4-8Progressive start-up 3-8Protective earth 2-2, 2-6, 2-7

RRamp 3-8Recalibration 4-4Relay (alarm) 2-10, 5-2

SSafety

during maintenance 6-2during wiring and mounting 2-2

Safety ramp 3-8Settings

firing delay 3-4over-current alarm / I limit 4-4, 5-7power limit 4-4

Signalling 3-2Single-cycle (firing mode) 3-5Standards and Directives applicable iii

TTechnical specifications 1-6 to 1-9Temperature of use 1-6Thermo-contact (alarm) 5-3Threshold for limits and over-current alarm 5-7Thyristor firing 3-1

VVerification of characteristics iv

WWiring 2-6

INDEX

7100A User Manual


EUROTHERM

For over thirty years Eurotherm Limited have been providing an unparalleled level of service and expertise to customers in the control of Processes and Power.

From requirement assessment, through to equipment specification and plantcommissioning.

Eurotherm Limited is able to offer expertise and equipment in the following areas:• Input conditioning• Process and Temperature Indicators• Single Loop Process and Temperature Controllers with Programming facilities• Programmable Multi loop Process Controllers• Solid State Contactors• Power Controllers• Paper and Paperless Data Recorders• Data Acquisition and Management Instrumentation• Supervisory Systems (SCADA)• Process Automation Systems

Eurotherm Limited is part of the Production Management Division of Invensys plc, one of the world’s leading automation and controls companies.

Eurotherm manufactures at a number of locations in Europe and the USA, and is a major supplier to the world’s processing and manufacturing industries.

The company is ISO9000 approved and operates TickIT protocols for software management.

Please contact your local Sales Office.

7100A User Manual Part No : HA 176499 ENG

EUROTHERM WORLDWIDE SALES AND SERVICE

Manufactured by Eurotherm Automation

JAPANDensei-Lambda KK Eurotherm.Tel Tokyo (+81 3) 5714 0620Fax (+81 3) 5714 0621Web : www.nemic.co.jp

KOREAEurotherm Korea LimitedTel Seoul (+82 2) 5438507Fax (+82 2) 545 9758

NETHERLANDSEurotherm B.V.Tel Alphen aan den Rijn (+31 172) 411 752Fax (+31 172) 417 260WEB:www.eurotherm.nl

NORWAYEurotherm A/STel Lysacer (+47) 67 - 59 21 70Fax (+47) 67 - 11 83 01

SPAINEurotherm España SATel Madrid (+34 91) 6616001Fax (+34 91) 6619093WEB: www.eurotherm.es

SWEDENEurotherm ABTel Malmo (+46 40) 384500Fax (+46 40) 384545WEB: www.eurotherm.se

SWITZERLANDEurotherm Produkte AGTel Freienbach(+41 055) 4154400Fax (+41 055) 4154415Web : www.eurotherm.ch

UNITED KINGDOMEurotherm Limited.Tel. Worthing (+44 1903) 695888Fax(+44 1903) 695666WEB:www.eurotherm.co.uk

U.S.A.Eurotherm Controls Inc.Tel Leesburg, (+1703) 443-0000Fax (+1703) 669-1300WEB: www.eurotherm.com

AUSTRALIAEurotherm Pty. Ltd.Tel Sydney (+61 2) 9634 8444Fax (+61 2) 9634 8555Web : www.eurotherm.com.au

AUSTRIAEurotherm GmbHTel Vienna (+43 1) 798 7601Fax (+43 1) 798 7605Web : www.eurotherm.at

BELGIUMEurotherm B.V.Tel Antwerpen (+32 3) 322 3870Fax (+32 3) 321 7363WEB:www.eurotherm.nl

DENMARKEurotherm A/STel Frederiksberg (+45 38) 871 622Fax (+45 38) 872 124

FRANCEEurotherm Automation SATel Lyon (+33) 4 78 66 45 00Fax (+33) 4 78 35 24 90WEB: ww.eurotherm.tm.fr

GERMANYEurotherm Regler GmbHTel Limbourg (+49 6431) 2980Fax (+49 6431) 298119WEB: www.eurotherm-deutschland.de

HONG KONGEurotherm LimitedTel Hong Kong (+852) 2873 3826Fax (+852) 2870 0148

INDIAEurotherm India LimitedTel Madras (+9144) 4928129Fax (+9144) 4928131

IRELANDEurotherm Ireland LimitedTel Naas (+353 45) 879937Fax (+353 45) 875123

ITALYEurotherm SpATel Guanzate (+39 31) 975111Fax (+39 31) 977512WEB: www.eurotherm.it

© Copyright Eurotherm Limited 2002All rights strictly reserved. No part of this document may be stored in a retrieval system, or any form or by any means without prior writtenpermission from Eurotherm Limited. Every effort has been taken to ensure the accuracy of this specification. However in order to maintain our technological lead we are continuouslyimproving our products which could, without notice, result in amendmentsor omissions to this specification.

ENG

http://www.eurotherm.co.uk

Single Phase Power Thyristor - IBT · 2015. 7. 19. · 7100A series power thyristor units are used...

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