Power Thyristor Units User Manual Two phase load - E
Contents
1. 1 5 1 2 1 0S6 ou cete veiut 1 5 1 2 2 POWE ite Q tem eR PR D AE 1 5 1 2 3 1 0ad 5 ru IL arc t s rat RE ku dn be 1 5 1 2 4 DIMENSIONS ities ie dota luu rare TC ROCA ER 1 5 1 2 5 Commnarid ce Mm ornat etc pr ue es 1 5 L2 6 Firing modes icy pe eese pee ee ER 1 6 1 2 7 kuya cn rc Rn Ree pe PCR ao 1 6 1 2 8 I ridi cation xi kae ace eet ac a e 1 6 1 2 9 Alarms bu ovo eat e de eer 1 6 1 2 10 Protection z yal ean aito wet aS HR s iR 1 7 12 11 Mo htlng ze aa Ra pier tee eas 1 7 1 2 12 Environment naa as 1 7 1 3 1 8 7200A User Manual 11 Identification 1 Chapter 1 IDENTIFICATION 1 1 GENERAL PRESENTATION A 7200A series thyristor unit comprise of two channel controlled by thyristors 7200A series thyristor units are used to control the electrical power of three phase industrial loads such as Low coefficient resistive loads Short waveinfrared elements for units with a rating lt 100A Current ratings vary from 16 A to 200 A per phase at line to line voltages from 200 V to 500 V Power terminals Protective earth supply terminal Y 4 A Ratings2. tees 44 4 3 1 DLF option Load failure diagnostic alarm 44 4 3 1 1 Alarm actions with DLF option 45 4 3 2 PLF diagnostic detection specifications 45 4 3 2 1 Setting the DLF alarm 45 4 3 2 2 PLF detection conditions 46 4 3 2 3 PLF detection sensitivity 46 4 3 2 4 Load type matching 46 4 3 2 5 Signalling of channel for load fault 47 4 3 2 5 1 Disabling alarms for load failure signalling 4 7 4 3 2 5 2 Functions of DLF alarmpush button 48 7200A User Manual 41 Alarms ALARM DIAGNOSTIC The table below summarises all status LED informati on needed to diagnose the fault Basic Version f Y DIAGNOSIS Ove Total Partial heating Thyristor Load Load Firing short circuit Failure Failure Zero crossing Firing STOPPED Figure 4 1 Diagnosing operation and alarms according to front panel LED status 42 7200A User Manual Alarms 4 Chapter 4 ALARMS Options 4 1 SAFETY MECHANISMS The alarms on the 7200A protect the thyristors and the load against certain types of abnormal operation and provide the user with information about the type of fault AN Alarms not under any circumstances a replacement for personnel protection e Th
3. DENMARK Eurotherm A S Tel Frederiksberg 45 38 871 622 Fax 45 38 872 124 FRANCE Eurotherm Automation SAS Tel Lyon 33 4 78 66 45 00 Fax 33 4 78 35 24 90 WEB ww eurotherm tm fr GERMANY Eurotherm Regler GmbH Tel Limbourg 49 6431 2980 Fax 49 6431 298119 WEB www eurotherm deutschland de HONG KONG Eurotherm Limited Tel Hong Kong 852 2873 3826 Fax 852 2870 0148 INDIA Eurotherm India Limited Tel Madras 9144 4928129 Fax 9144 4928131 IRELAND Eurotherm Ireland Limited Tel Naas 353 45 879937 Fax 353 45 875123 ITALY Eurotherm SpA Tel Guanzate 39 31 975111 Fax 39 31 977512 WEB www eurotherm it Eurotherm is part of Invensys plc Manufactured by Eurotherm Automation SAS Copyright Eurotherm Limited 2002 JAPAN Densei Lambda KK Eurotherm Tel Tokyo 81 3 5714 0620 Fax 81 3 5714 0621 Web www nemic co jp KOREA Eurotherm Korea Limited Tel 82 31 286 8507 Fax 82 31 287 8508 NETHERLANDS Eurotherm B V Tel Alphen aan den Rijn 31 172 411 752 Fax 31 172 417 260 WEB www eurotherm nl NORWAY Eurotherm A S Tel Lysacer 47 67 59 21 70 Fax 47 67 11 83 01 SPAIN Eurotherm Espa a SA Tel Madrid 34 91 6616001 Fax 34 91 6619093 WEB www eurotherm es SWEDEN Eurotherm AB Tel Malmo 46 40 384500 Fax 46 40 384545 WEB www eurotherm se SWITZERLAND Eurotherm Produkte AG Tel Freienbach 41 055 4154400 Fax 41
4. Invensys EUROTHERM 7200A Power Thyristor Units Two phase User Manual CENG load control 7200A ADVANCED CONTROLLERS THYRISTOR UNITS CONTROLLING TWO PHASES OF A THREE PHASE LOAD 7000 SERIES USER MANUAL Copyright Eurotherm Automation 2004 All rights reserved All reproduction or transmission in any form whatsoever and using any procedure electronic or mechanical including photocopying and recording without written per mission from Eurotherm is strictly prohibited R f HA176821 ENG Issue 2 0 02 2005 COMMISSIONING FLOWCHART 7200A User Manual Contents CONTENTS Page Commissioning flowchart ii European Directives and applicable standards iv Chapter 1 Identification of power thyristor units 1 1 Chapter 2 Installation 2 1 Chapter Firingmodes 31 Chapter 4 lt 41 Chapter 5 Maintenance 51 Inde ee 61 Eurotherm worlwide sales and services 7 1 PURPOSE OF MANUAL This manual Issue 2 0 describes the Basic Version and all Options for 7200A series three phase power thyristor units Eurotherm s policy of continuous product improvement and developement means that the specifications in this document may be modified without prior notice 7200A User Manual
5. Identification Controlled phase terminal supply side internal fuse compartment NI Protective earth terminal c We Ai 2 attachment screws for internal fuse compartment IC IEURO THERM 7200A Internal wiring diagram 125A 500V internal fuse for 125 to 200 A ratings Over temperature Alarm gt 125 A only yu 3 4 x Bt a 1 OGRF Signalling LEDs o SH a alarms and operation OoN EN 60947 4 3 932 Control terminal labelling DLF Option CHK SET push button DLF alarm setting diagnosis Fuse blown contact code MSF U Control terminal block FAn power supply Controlled phase terminal load side Fig 1 3 General view of a 7200A power unit gt 125 A rating 14
6. 500 volts 3 Power supply for electronics Self power ed External 115 V supply External 230V supply lt 100A No fan 9 Manual language Code French English German 10 Selected options Without options V control and End of code With options Selection of options Control and Alarms options 11 Type 1Alarms Partial Load Failure and Serious Alarms No Alarms 12 Load Type With DLF Option Short Infrared witn FClonly Low temperature coeffi ci entloads gt 125A 115V fan and 230V fan and 5 Load configuration Star without neutral Closed delta Basic Selection 6 Thyristor fuses Fuses without fuse blown microswitch Fuses with fuse blown microswitch Without fuses SWIR 7 Firing mode Burst mode base ti me 16 cycles base time 64 cycles Singlecycle base time 1 cycle Analogue signal current from 0mA to 20 mA current from 4mA to 20 mA voltage from OV to 5V voltage from OV to 10V ithout DLF option or High temperature coefficient loads Alarm relay contact ith alarm otpion closed on alarm open on alarm ithout alarm option Certification et warranty extension 15 Certification Without certificate NONE With certificate CFMC 16 Warranty extension Without warranty extension NONE Warranty extended to 5 years WLOO5 r8 7200A User Manual Installation 2 Chapter 2 INSTALLATION Contents Page 2 1 Sa
7. 7200A User Manual Identification 1 2 TECHNICAL SPECIFICATIONS 1 2 1 Use 1 2 2 Power Nominal current per phase Nominal line to line voltage Frequency Dissi pated power Cooling 1 2 3 Load Categories of use Load configuration 1 2 4 Dimensions Thyristor unit variant 4 see Standard EN 60947 4 3 for uninterrupted service 16A to 200A at 45 C see product code 200V to 500 V see code Use from 47 to 63 Hz automati c matching 13W approx per amp and per phase Ratings lt 100A Natural convection Ratings 2 125A Fan cooled 115V 230V consumption 10 VA Industrial three phase load three wire configuration The categories of use applicable for each unit are indicated on the identificati on label e AC 51 Non4nductive or low inductance loads furnace resistances resistive load with low temperature coefficient AC 55b Switching of incandescent lamps Short wave infrared elements SWIR for lt 100A units Options must be fitted to 7200A units in order to comply with certain categories of use Independant of phase rotation order Star without neutral closed delta Configuration on order 16A 63A 220mm 80A 100A 125 Aa 200A 495 mm 1 2 5 Command Supply Command type Self powered from line or external power supply 115 V or 230V 10 1596 see code Consumption 10 VA Analogue Either remote analogue setpoint O 5V or 0 10V 100 input 0
8. European directives and applicable standards EUROPEAN DIRECTIVES AND APPLICABLE STANDARDS COMPLIANCE WITH PRODUCT STANDARD 7200A products comply with the ter ms of product standard EN 60947 4 3 Contactors and motor starters AC semiconductor controllers and contactors for non motor loads CE LABELLING 7200A products installed and used in accordance with the user manual bear CE labelling on the basis of compliance with the essential requirements of the European Low Voltage Directive 73 23 EEC dated 19 February 1973 modified by 93 68 EEC dated 22 J uly 1993 and the Electromagnetic Compatibility Directive 89 336 dated 3 May 1989 modified by 921 EEC dated 28 April 1992 and 93 68 EEC dated 22 uly 1993 SAFETY The units have IP20 protection rating as defi ned by standard IEC 60529 External wiring must comply with standards 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 7200A products installed and used in accordance with the user manual are designed for an industrial environment and must not be used in the home IMMUNITY The EMC immunity test standards required by the standard EN 60947 4 3 Contactors and motor starters AC semiconductor motor controllers and contactors for non motor loads are presented in table 1 Test type Minimum levels EMC test standard Electrostatic discharge 4 kV on cont
9. and two fixed hooks and two mobile hooks for clipping to a DIN rail the mobile hooks are moved using a catch and spring 2 2 3 MOUNTING ON DIN RAILS Upper attachment plate For DIN rail mounting fix two symmetric DIN rails for units rated 16A to 63A in accordance with theunit dimensions and safety B hooks recommen dati ons bringtheunit up against thetop rail bog i engaging the two fixed hooks on the top attachment plate push the unit against the rail eclip the unit onto the bottom rail 220 125 hooks Attachment EN50022 DIN Rails Mobile attachment Catch to move usingthe mobile hooks on the bottom hooks downwards attachment plate ensuring that they are properly engaged Lower plate To removethe unit the mobile hooks downward by attachment pulling the catch on the bottom attachment plate unclip the unit from the rail Figure 2 1 Rails DIN attaching 7200A User Manual Installation 2 2 4 BULKHEAD MOUNTING Figure 2 2 Bulkhead mounting 16 A to 63 A units 144 For 2 T M6 screws 305 275 qs 124 For2 M6 screws Figure 2 3 Bulkhead mou
10. 055 4154415 Web www eurotherm ch UNITED KINGDOM Eurotherm Limited Tel Worthing 44 1903 695888 Fax 44 1903 695666 WEB www eurotherm co uk U S A Eurotherm Controls Inc Tel Leesburg 1703 443 0000 Fax 1703 669 1300 WEB www eurotherm com http www eurotherm co uk All rights strictly reserved No part of this document may be stored in a retrieval system or any form or by any means without prior written permission 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 continuously improving our products which could without notice result in amendments or omissions to this specification User Manual 7200A R f HA 176821 ENG A176821EN
11. Options ALR Alarm relay Alarms contact code NC Alarm relay contact code NO High Fuse with Current micro switch contact gt 125A Table 2 3 Description of control terminal blocks 28 7200A User Manual Installation 2 3 3 2 Control signal Analogue _ control p signal connector 0v 10 Control Potentiometer signal 5 V internal a external signal e g from b manual command from Eurotherm series 2000 controller external potentiometer Figure 2 8 Control signal connection self powered unit base version The analogue control signal terminal block is labelled ANA IN The input available corresponds to the input type selected in the product code specified range of voltage or current The signal must be connected between terminals 32 and 31 The of the control signal must be connected to ter minal 32 labelled RI A typical external signal connection is shown on figure 2 8a Figure 2 8b shows how to use the internal 5 V voltage ter minal 33 labelled 5VA for manual control with an external 10 potentiometer This voltage 5 V Analogue is intended for manual control which is only possible with input code OV5 2 4 Alarm relay contact alarm option If one of the alarm options is fitted an alarm relay contact is available on the ALR terminal block see figure 2 9 The type of contact closed or open on alarm is determined by
12. nominal current I I and nominal voltage User labelling EURO THERM 7200A T 63 500V Internal 3 12 5 13 power wiring A diagram DLF option 2m GHKUSET push button 1 GRF DLF option pip e Diagnostic alarm f y ho ASET Electronics supply 60947 4 3 Zero crossing firing mode Jes Firing request LED Control terminal pinouts SY l Lyc E L 000 p di Oy Control connector Power terminals load Fig 1 1 General view of a 7200A power unit ratings from 16 A to 63 A 12 7200A User Manual Identification Power terminals supply 4 A N pics 7 EUROTHERM 7200 7 80A 500V 5 13 Internal 33 0 l power wiring diagram 2 T1 4 T2 6 73 Y GRF DLF option Diagnostic alarm gt OOF ser K gt Electronics supply 4 N EN 60947 4 3 Zero crossing firing mode Firing request LED CETTE VA is are Ee Control terminal pinouts Control connector Protective earth terminal lt Power terminals load Fig 1 2 General view of a 7200A power unit ratings from 80 A to 100 A 7200A User Manual 13
13. 20mA 4 20mA 2500 i p eor manual setpoint potentiometer 0 5V 2 mA max 7200A User Manual Identification 1 2 6 Firing modes Zero crossing firing 1 2 7 Control Parameters Linearity and Stability 1 2 8 Indication 1 2 9 ALARMS Serious alarms GRF Signalling Diagnostic alarm DLF Signalling Settings Sensitivity Extension Over temperature alarm Signalling Alarm relay Burst mode base time 16 or 64 cycles Single cycle base time 1 cycle e Standard on balanced three phase supply Load voltage squared V2 Better than 2 of full scale on balanced three phase suppl y Electronic supply present Green ON LED and supply fault detection ON LED flashing Thyristor firing request Green HEAT LED Total load failure and thyristor short circuit detection Red GRF LED and alarm relay contact Partial Load Falure detection Orange DLF LED and alarm relay contact Monitoring diagnosis alarm adjustment and resetting using push button on front pannel Detects the failure of at least one heating element for several identical elements connected in parallel Load Firing confuguration 30 3S mode TheDLF option includes Serious alarm monitoring GRF Partial Load Failure detection for SWIR loads is only avalable when using FC1 Burst firing mode For all fan cooled units gt 125A available later theunit cuts out if thetemperature threshol
14. act 8kV in air EN 6100042 Radi ated radio frequency 10V m 80MHz f lt 1GHz electromagnetic field 8096 modulation 1kHz sinusoidal EN 61000 4 3 Electrical fast transient burst 2kV 5kHz EN 61000 4 4 Electrical surge 4kV line to earth 2kV linetoline EN 61000 4 5 Conducted disturbances 140 dBuV 150kHz f lt 80MHz EN 61000 4 6 Voltage dips short interruptions and voltage variation 5sinterruptions EN 61000 4 11 Table 1 EMC immunity standards compliance EMISSIONS The EMC emissions test standards required by the standard EN 60947 4 3 Contactors and motor starters AC semiconductor motor controllers and contactors for non motor loads are presented in table 2 Emission type Test standard Radi ated at radio frequencies All firing CISPR 11 modes Class A Conducted at radi ofrequencies Burst mode and Singlecycle CISPR 11 Class A group 2 Table 2 emissions standards compliance EMC GUIDE To help you deal with installation dependent electromagnetic interference effects Eurother m provides an Electromagnetic compatibility installation guide ref HA 025464 ENG which Sets out best current practi ce regarding EMC CE CONFORMITY DECLARATION is available on request iv 7200A User Manual Identification 1 Chapter 1 POWER THYRISTOR UNIT IDENTIFICATION Contents Page 1 1 General presentation 12 1 2 Technical specifications
15. aintenance 5 3 THYRISTOR PROTECTION FUSES The thyristors in the 7200A power thyristor unit are protected against excess currents by high speed fuses for all load types other than short wave infrared elements For current ratings lt 100 A the fuses are external Danger High speed fuses do not provide protection for the installation AN Upline protection must 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 fuses and fuse holder assembly corresponding to the current rating are supplied with the product e for code FUSE the fuses is not fitted with a striker bar With this option 2 lots fuse fuse holder are delivered one per contrilled lines e for code MSFU the fuses 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 External Fuse and fuse holder assambly fuse part Part Number Dimensions mm number H x L CH260024 F U 1033 16 CH 260034 FU 1038 25A CH330054 F U 1451 40A CS173087U080 FU2258 63A CS173087U 100 F U2258 80A Thyristor Pt CS173246U 125 fuse part number with strike bar CS176513U 020 CS176513U032 CS176513U 050 CS176461U 080 CS176461U 100 CS176246U 125 Internal fuse part number F U2760 100A Fuse and fus
16. ays to indicate the controlled channel on which load failure has occurred Figure 4 3 shows the three types of flashing if a load failure is detected on one of the channels of the 7200A power thyristor unit LED status DLF Load failure on the Orange first controlled channel LED status DLF Load failure on the Orange E s second controlled channel LED status DLF Orange Failure on the third channel Figure 4 3 Signalling of channel for load failure on the DLF LED Important The number of times the DLF LED flashes indicates the thyristor channel number connected to the failed load phase eIn 3S three phase load confi guration the load phase connected to the channel indicated by the DLF LED is failed eIn 3D three phase load configuration the failure is one or two branch es of the delta connected to the channel indicated by the DLF LED f several faults occur simultaneously on the paseload 2 or phases in 3S 2 or brached in 3D then the indications follow each other for each channel 4 3 2 5 1 Disabling alarms for load failure signalling PLF fault signalling DLF indicator and relay can be temporarily excluded from alarms by pressing the CHK SET Check Setting push button If thefault persists DLF signalling returns to the alarm position 7200A User Manual 47 Alarms 4 3 2 5 2 Func
17. ble below LED labelling Signalling Power supply for electronics Thyristor firing request in Burst mode and Single cycle Table 3 1 Firing modes and base LEDs on front panel During nor mal operation with zero crossing switching the HEAT LED flashes to match the thyristor firing periods 3 2 BURST MODE codes C16 and C64 Burst mode firingisa proportional cycle which delivers a series of whole supply cydesto the load Thyristor firing and cut off is synchronised with the supply and occurs at zero crossing Load voltage Figure 3 1 Thyristor firing for one of the phases in Burst mode 32 7200A User Manual Firing modes Thyristor firingin Burst mode can be described by the firing time non firing time Tuc and modulation time where T Tc t Tac The power delivered to the load is defined by the duty ratio 2 Tc Tm Firingin Burst mode is defined by the Base Cycle Time 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 Tg T Tye The Base Cycle time is equal to 16 cycles for code C16 and 64 cycles for code C64 Modulation time 10 Tg 8 Tg 6 4 Tg 2 0 25 50 75 100 Duty ratio Figure 3 2 Burst mode modulation time depending on setpoint The c
18. cessary to have the power supply in phase or phase opposition with the the voltage between the controlled phases of the unit Protection Cut off installed by user Supply Network 1 i M M 9 9 EURO THERM 7200A 63A 500V EN 60947 4 3 Yu 3 12 5 13 Are Le 2 T1 4 T2 6 T3 1 A Fuse ll Power supply for Kil electronics and fan 871287 terminal block Figure 2 10 Wiring example for the external auxiliary power supply for electronics and the fan code 230V 2 10 7200A User Manual Firing modes 3 Chapter 3 FIRING MODES Contents Page 3 1 General and firing mode signalling 32 3 2 Burst mode codes Cl6and 64 32 3 3 Singlecycle code 1 34 7200A User Manual 31 Firing modes 3 Chapter 3 FIRING MODES 3 1 GENERAL AND FIRING MODE SIGNALLING 7200A power thyristor units can be controlled with one of the following thyristor firing types aseries of supply voltage cycles with zero crossing firing Burst mode codes C16 C64 FC1 Thefiringtypeis shown on theunit s front panel table 3 1 in accordance with the product code Two indicators green ON and HEAT LEDs areincluded on the front panel in all versions either basic or with options Theindicators correspond to thethyristor firing mode as shown in theta
19. d is exceeded Red LED Alarm relay contact with any alarm Available with alarm options Therelay contact 0 25 A 230 Vac 32 Vdc is either open on alarm or closed on alarm depending on the product code 7200A User Manual Identification 1 2 10 Protection Co ordination type Electrical protection Thyristors 1 2 11 Mounting Mounting 1 2 12 Environment Use Storage Isolation voltage Pollution Humidity Over Voltage For short circuits IP20 without adding additional protection Varistor and RC snubber Quick acting three phase fuses erating lt 100A external order separately erating gt 125A internal No fuse for short waveinfrared elements Attachment plate fi xed to unit On symmetrical EN50022 DIN rail or bulkhead mounting for ratings gt 80A bulkhead mounting only From Oto 45 at nominal current max altitude 1000 m From 10 C to 70 Assigned isolation voltage Vi 500 V Degree 2 acceptable as defi ned IEC 60664 RH from 5 to 95 non condensing non streami ng Over voltage category 11 as defined by IEC 60664 Eurother m s policy of continuous product improvement and development means that the specifications in this document may be modified without prior notice 7200A User Manual Identification 1 3 Codification Ratings Code 2 Nominal line to line voltage 200 volts 230 volts 277 volts 400 volts 460 volts 480 volts
20. e holder assambly with micrswitch Part Number M SF U1451 16 M SF U1451 25 M SF U1451 40A M SF U2258 63A M SF U2258 80 MSFU2760 100A Thyristor Pt CS176762U 160 CS176762U 250 CS176762U 315 145000 As 145000 5 145000 5 Dimensions mm H x L x P 10 x 795 110 x 795 110 x 795 1225x 35 1225x 35 240 x 50 Thyristor Pt Table 5 2 Fuses with microswitch recommended for rating 16 A to 100 code MSFU Important For all loads other than short wave infrared elements using a thyristor protecti on fuse other than the recommended fuse voids the product guarantee 7200A User Manual 53 Maintenance USER NOTES 54 7200A User Manual Maintenance INDEX Page Page M Alarms 1 6 Chapt 4 Alarm relay contacts 2 8 Maintenance Chapt 5 Mounting 2 3 2 4 Bulkhead mounting 24 c PLF 45 Power connection 2 7 CE labelling iv Protecti on 1 7 Coding 18 Power 15 Commissioning ii Control connections 2 4 Control signal 27 s Control teminal block 2 6 Standards iv Safety iv D Safety during maintenance 5 2 Safety during installation 2 2 DLF 45 Dimensions 15 T E A NAT Technical Specification 1 5 EMC iv Three phase load connecti on 2 7 Type of mounting 2 3 F U Firing modes 1 6 Chapt 3 Fuses 53 Use 1 5 G w General connection diagram Chapt 2 wiring 25 1 Indication 16 L Load 15 7200A User Manual 61 Maintenance EUROTHERM For over thirty year
21. e user is responsible for installing independent safety mechanisms which must be inspected regularly Given the value of the equipment controlled by the 7200A Danger thisis strongly recommended Eurotherm can supply various types of suitable alarm detector 4 2 ALARM STRATEGY 4 2 1 TYPES OF ALARM Two types of alarm are available as options monitoring of load and thyristors 4 2 2 ALARM ACTIONS 4 2 2 1 Firing cut off When Overheating fault is detected for current ratings gt 125 A only 4 2 2 2 Signalling All faults detected are signalled by illuminating or flashing the corresponding LEDs The LEDs are located on the front panel of the thyristor units beneath the product code The LEDs present are deter mined by the option selected 4 2 2 3 Alarm priority Only one alarm is signalled if several faults occur simultaneously Thermal faults and thyristor short circuits take priority over load fault display 4 2 2 4 Alarm relay All 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 4 2 2 5 Memorisation Alarms except Neutral cut off are not memorised After an alarm has been detected and oncethe fault conditions have cleared signalling for these alarms LED and relay returns to the non alarm position Thyristor short circuit and neutral cut off re
22. fety during installation 22 2 2 Mountihig rnb pex ku aoe begun waked yaaa ES 2 3 2 2 1 Types of mounting 2 3 2 2 2 Attachement 2 3 2 2 3 Mounting on DIN lt 2 3 2 2 4 Bulkhead mounting 2 4 2 3 WIrI ng smt eee tac en ERAN Rte ute 2 5 2 3 1 General connection diagram 2 5 2 3 2 Power connections 2 7 2 3 2 1 General PRENDS Iu E Ra 2 7 2 3 2 2 Three phase load configuration diagram 2 7 2 3 3 Control connections 2 8 2 3 3 1 Control terminal blocks 2 8 2 3 3 2 Control signal 2 9 2 4 Alarm relay contact 2 9 2 5 External power supply terminal block 2 10 2 5 1 Power supply for electronics 2 10 2 5 2 Power supply for thefan 2 10 2 5 3 Power supply for electronics and fan 2 11 7200A User Manual 21 Installation 2 Chapter 2 INSTALLATION 2 1 SAFETY DURING INSTALLATION MOUNTING AND WIRING A gt Danger e 7200A power thyristor units must be installed and wired by qualified staff authorised to work on low voltage industrial elect
23. m shall not be held responsible for any damage injury losses or expenses AN 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 is to be installed and used Danger The product must be commissioned and maintained by qualified personnel autho rised to work in an industrial low voltage environment Users must not attempt to AN access internal parts The heatsink temperature may exceed 100 C The heatsink remains hot for approx 15 minutes after the unitis shut down Avoid touching the heatsink even briefly while the unit is operating 5 2 MAINTENANCE e Every six months check that the power and protective earth cables are correctly tightened If the load parameters change the operation of the PLF detection must be diagnosed see DLF option section f a DLF alarm occurs check the load wiring and condition of contacts Use the push button to confirm the DLF alarm diagnosis e To ensure that the unit is cooled correctly the heatsink should be cleaned regular ly depending on how dirty the environment is as should the fan protection grille for fan cooled units rated at 125A or more Danger The thyristor unit should be cleaned only when powered down and at least 15 minutes after stopping operation 5 2 7200A User Manual M
24. ng T Table 4 1 LEDs for fault 4 3 2 PLF Diagnostic detection specifications 4 3 3 1 Setting the DLF alarm Off Typical reaction time 1stol3s Adjusting PLF detection involves calculating and storing the value of the reference impedance 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 impedance recalculated in the following conditions erms voltage across load greater than 40 of the unit s nominal voltage rms unit s line currents going through the unit are greater than 30 of the unit rated current over temperature over current or thyristor short circuit faults or type alarms Each time PLF setting is required the load must be balanced eIn order to guarantee the sansilbility full scale settings must be done at theload s nominal temperature The PLF detection settings should be adjusted each time the thyristor unit is recalibrated 7200A User Manual 45 Alarms 4 3 2 2 Partial load failure detection PLF monitoring involves comparing the load impedance with a reference impedance stored during setting the load impedance is calculated from the rms values measured con tinuously This comparison allows the detection of the load impedance increase PLF detection is only possible under the following conditions erms voltage across load greate
25. nting 80 A to 100 A units For 2 M6 screws N m N E i HM eere 124 For 2 M6 screws Figure 2 4 Bulkhead mounting gt 125 A units 24 7200A User Manual Installation 2 3 WIRING 2 3 1 GENERAL CONNECTION DIAGRAM The general connection diagram shows the power terminals independently of the three phase load configuration and control connectors To supply network Protection and cut out installed by user Thyristor fuses External lt 100 A Protective Earth EURO THERM 7200A 6 500V 1 L1 L2 5 13 s 41 T2 6 T3 2 T1 EN 60947 4 3 Analogue signal connector To three phase load Auxiliary power supply Figure 2 5 General connection diagram for units lt 100 A 7200A User Manual Installation L1 L2 Supply protection and cut out Installed by user Controlled channel terminal supply side Protective earth terminal Internal fuse compartment thyristor protection 7200A 200 500 V L1 L2 2 T1 4 T2 EN 60947 4 3 EURO THERM Internal power wiring diagram Controlled channel terminal load side Internal f
26. ontrol system adjusts the modulation time to retain the same precision for all duty ratios power requested 3 3 SINGLE CYCLE code FC1 Burst mode firing with asingle firing or non firing cycle is known as Single cycle For example with a setpoint of 50 corresponding to a duty ratio n 50 the modulation comprises 1 firing cycle and 1 non firing cycle For duty ratios lt 50 the firing time remains unchanged 1 cycle and the non firing time increases For duty ratios gt 50 the non firing time remains unchanged 1 cycle and the firing time increases 25 power Tuc k 50 power e c Twe Tc Tg Figure 3 5 Typical firing in Single cycle mode for various duty ratios 7200A User Manual 33 Firing modes 34 7200A User Manual Alarms 4 Chapter 4 ALARMS Contents Page Alarm diagnostic sssssesssee eren 4 2 4 1 Safety mechanisms esses 4 3 4 2 Alarm strategy o riec rurnore berian ara adn eiai 4 3 42 1 Types of alarm 4 2 42 2 Alarmactions ne e RA A A 4 2 4 2 2 1 Firing cut off r 1 4 2 4 2 2 2 Si Dya EE 4 2 42 2 3 Alarm priority 4 2 4 2 2 4 Alarm relay 4 2 4 2 2 5 Memorisation 43 4 3 Type Falar mg
27. quire repairs 7200A User Manual 43 Alarms 4 3 ALARMS Red LED Red LED Overheating 2125 A Serious faults DLF alarm adjustment and diagnostic push button Orange LED Partial Load Failure Figure 4 2 Layout of front panel LEDs 4 3 1 DLF OPTION Load failure Diagnostic alarm Alarms monitored with DLF option With the DLF option Diagnostic Load Failure alarm the following faults are monitored and di agnosed Partial Load Failure PLF Serious faults Total Load Failure TLF Thyristor Short Circuit THSC Thyristor overheating T only for fan cooled units with current rating gt 125 A Note Thermal faults are signalled by the LED if one of the alarm options or one of the control options except V2 and OL is fitted The unit is protected against thermal faults whether or not they are signalled e Thermal faults are signalled by the alarm relay if one of the alarm options is fitted 7200A User Manual Alarms 4 3 1 1 Alarm actions with DLF option The detection of a fault PLF or serious alarm is signalled by ethe corresponding LED on the front pannel of the unit thealrm relay contact Note DLF alarms not memorised LED states Partial load failure PLF orange Flashing Total load failure TLF Flashing On or Flashing Firing stopped Thyristor short circuit THSC Off Overheati
28. r than 40 of the nominal voltage and erms unit s line currents are greater than 5 of theunit s rated current no over temperature over current or thyristor short circuit faults TLF Total Load Failure detection is only possible under thefollowing conditions erms voltage across load greater than 40 of the nominal voltage or greater than the unit nominal voltage no over temperature over current or thyristor short circuit faults 4 3 2 3 Partial load failure detection sensitivity Partial load failure detection sensitivity can be expressed in ter ms of a maximum number of load elements connected in parallel for which theunit can detect the failure of one element TheDLF diagnostic alarm guarantees that failure of One element will be detected for two three or four see table 42 identical elements connected in parallel for any three phase load configuration scheme Load Firing configuration 3D 35 mode Table 4 2 Partial load failure detection sensitivity 4 3 2 4 Load type matching PLF detection is adapted to the load type Thetype of load controlled is selected when ordering with the product code LTCL Low Temperature Coefficient Load or SWIR Short Wave InfraRed elements PLF detection when using SWIR type of loads is only authorised when using FC1 firing mode 4 6 7200A User Manual Alarms 4 3 2 5 Signalling of channel for load fault With the DLF option the DLF LED flashes in particular w
29. rical facilities Units must be installed in a fan cooled cabinet to ensure that condensation and pollution are excluded with a class of at least 2 according to IEC 60664 We recommend fitting fan cooled cabinets with a fan failure detection device or a thermal safety cut out The cabinet must be closed and connected to the protective earth accordi ng to IEC 60364 or applicable national standards Important Units must be mounted with the heatsink positioned vertically and with no obs tructions 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 one unitis not drawn in by theunit above The ambient temperature beneath the unit must not exceed 45 Leave a gap of at least 10 mm between adjacent units Important e Nominal currents correspond to use at ambient temperatures of no more than 45 C Overheating may cause incorrect operation and may even lead to compo nents being damaged Danger tistheuser s responsibility to wire and protect the facility according to best practi ce and applicable standards A suitable device ensuringthat the unit can be electrically isolated from the sup ply must be installed upline to enable work to be perfor med safely Conductor cross sections should comply with 60943 Only use copper cables and wires rated for use at 75 C Before connecting or disconnecting the unit check that po
30. s 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 plant commissioning 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 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 andis a major supplier to the world s processing and manufacturing industries The company is 1509000 approved and operates TickIT protocols for software management Please contact your local Sales Office 7 1 7200A User Manual EUROTHERM WORLDWIDE SALES AND SERVICE AUSTRALIA Eurotherm Pty Ltd Tel Sydney 61 2 9634 8444 Fax 61 2 9634 8555 Web www eurotherm com au AUSTRIA Eurotherm GmbH Tel Vienna 43 1 798 7601 Fax 43 1 798 7605 Web www eurotherm at BELGIUM Eurotherm S A N V Tel Moha 32 0 85 274080 Fax 32 0 85 274081 WEB www eurotherm co uk
31. the product code Contact switching capacity 0 25 maximum 250 Vac or 30 Vdc Important The type of contact closed or open on alarm deter mines the terminal numbers in accordance with standard EN 60947 4 3 Terminal labelling e g contact open on alarm Contact type Code Terminal number Closed on alarm 71 72 Open on alarm NO 73and 74 Alarm contact connector ova RI 5VA 31 32 33 Alarm relay contact Figure 2 9 Typical alarm relay contact connections 7200A User Manual 29 Installation 2 5 External power supply terminal block Power supply for electronics and fan A F The power supply for the electronics 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 The power supply for the fan For units from 125 A and above the fan must be powered on with an external power supply115 V or 230 V depending on the product code The same code A F is used terminal 16 for 230 V 17 for 115 V depending on the product code It also possibleto combine the power supply for electronics and the power supply fo the fan 115 V or 230 V both the same In the case of an external power supply for electronics or when combining with AN the fan power supply it is ne
32. tions 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 of the PLF detection circuit Setting request Push and hold until DLF LEF flashes CHK Push button SET Setting LED performed LED Setting not performed Figure 4 4a PLF detection setting request Diagnostic 4 Press an hold until DLF LED is lit CHK Push button _ SET lt 3s t 0 gt LED DIF Monitoring enabled LED Monitoring disabled LED or a PLF fault Alarm relay Alarm ON amp Alarm OFF gt Alarm ON Figure 4 4b PLF monitoring diagnosis Disabling V Push and hold until DLF LED stops flashing CHK Push button EET 585 0 gt Monitoring LED disabled Figure 4 4c Disabling PLF monitoring 48 7200A User Manual Maintenance Chapter 5 5 MAINTENANCE Contents Page 5 1 Safety during maintenance 5 2 5 2 MaintenaN ee ee 5 2 5 3 Thyristor protection fuses 53 7200A User Manual 51 Maintenance 5 Chapter 5 MAINTENANCE 5 1 SAFETY DURING MAINTENANCE Please read carefully before commissioning the thyristor unit Important Eurother
33. upply side Protective earth terminal E EUROTHERM 7200 63A 500V EN 60947 4 3 4 2 by T 2 T1 4172 6 T3 Internal power wiring diagram Analogue input connector 3 power terminals load side Three phase load Three phase load ee prese closed delta star without neutral Figure 2 7 Connecting a three phase load using star without neutral OR closed delta configuration 7200A User Manual 2 7 Installation 2 3 3 CONTROL CONNECTIONS Terminal blocks on the underside of the 7200A power thyristor unit are used to connect ethe control signals analogue ethe auxiliary or electronics supply and the neutral alarm relay and acknowledgement contacts The wires used should be stripped for a length of 6to 7mm 2 3 3 1 Control terminal blocks The control terminal blocks are plug in screw connectors Theterminal blocks available depend on the power thyristor unit version and the selected options in the product code The terminal names and numbers are marked on the front panel for available ter minal blocks The table below gives details of all terminals and terminal blocks Version Terminal Terminal description Terminal Torque block name No Name Purpose capacity mm AWG Nm OV for analogue signals for analogue signals 5 V user output A F 230V aux supply except 115 V aux supply SELF Neutral or second phase
34. use blown contact MSFU Figure 2 6 General connection diagram for units with rating 125 A 2 6 7200A User Manual Installation 2 3 2 POWER CONNECTIONS 2 3 2 1 General Ratings from 16 A to 200 A 7200A power thyristor units comprise two channels controlled by thyristors Terminals 1 L1 3 L2 and 5 L3 must be wired to the three phase supply network Terminals 2 T1 4 T2 and 6 T3 must be wired to the three phase load The protective earth ter minal PE earth symbol must be wired to the protective earth Ratings A Terminal Capacity Clamping torque AWG Nm 13 9 12 9 5 18 2 38 Ratings Terminal Capacity Clamping torque Crimp eyelet NS Nm 16 4 or 28 8 10 17 wrench 2 10 ou 12 to attach eyelet and terminal Table 2 2 Power wiring details for ratings from 16 to 200 A NOTE Conductor cross sections should comply with IE C 60943 Power connections to the thyristor unit depend the load configuration scheme The following two configuration schemes may be used for three phase loads 2 3 2 2 Three phase load coupling Power connections to the unit depend on the load configuration The following two configuration schemes may be used for three phase loads estar without neutral 3 connection wires code 3S e closed delta 3 connection wires code 3D Three phase supply Protection and cut out installed by user B Thyristor fuses 3 power terminals s
35. wer and control cables and leads are isolated from voltage sources The protective earth must be connected before any other connections are made and should bethe last cableto be disconnected The protective earth connection terminal is marked with the symbol e To ensure the electrical safety and the earth protection continuity the front pannel screws must be screwed in correctly to the coupling torque of 0 5 Nm Important To ensure that 7200A power thyristor units comply with Electromagnetic Compatibility requirements ensurethat the panel or DIN rail to which they are attached is correctly grounded The ground connection designed to ensure ground continuity is not in any way a substitute for the protective earth connection 7200A User Manual Installation 2 2 MOUNTING 2 2 1 TYPES OF MOUNTING DIN rail mounting and bulkhead mounting 16A to 63A only Bulkhead mounting with screws gt 80 DIN rail mounting lt 63A only Bulkhead mounting Attachment plate DIN rail Attachment plate Screws Two horizontal Two symmetrical Two horizontal 4x lt 63A plates rails EN 50022 plates 4x M6 2 80 Table 2 1 Attachment details for both mounting types 2 2 2 ATTACHMENT PLATES Two factory fitted attachment plates on the rear of the 7200A thyristor units are used eto clip the unit toa DIN rail or eto screw the unit to bulkhead Each attachment plate has attachment holes for bulkhead mounting
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