SCR2.0 - CRE TECHNOLOGY
Contents
1. SCR O Synchroscope and synch check relay User manual Technical documentation W W W C relechnology com W W W C relechnology com A60 X2 90020 BEN user manual technical documenialion ww w crelecrnology com Content 1 PRESENTA NODE O OGAE E E EEA sion tmasiansiasetneernaenednt 5 2 INTA ETO IN ects tesco O A AAAA RAA 6 2 1 ENV iIPOMi ental Re Quy ene Wess o aaa da GORA E AGA AE AE O AO PEP 6 2 2 UNPJCEKINE oseuinweR ac E ROR AA O A oO OR OP AO Z besa A DOZ D EEG SO DORA 6 2 3 ARE ELE a ZEM 6 2 4 Mountas TEUM SA Rata 0a dt ca queen A ORA AR W O AAA Z OG AZ DAE R dA 6 2 5 WINNE DEUN GEAR AA AO ROA ORA E AEEA EA 6 3 HUMAN MACHINE INTERFACE cccscccseccstcoeecssecseccseccseceseceusceeesaeesseseusseesseeseecseceseceusceusseeesaeetseesseceseceussesseustasetseeneeeaees 9 3 1 KEERT EE accesses nt eas acne vues sieves EEEE ean wee nae A EE Ear T EAP BE AAE PE P R A Zd E TT 9 3 2 DIELGNAEPIO Za ARGO no cade E OKO AOR A 10 4 PROGRAMNMINO ada Ra seen RR O Rod O OO RO OO A AEG AGA AO AGA OKA 11 5 OPERA TON SaT oO O O O AAAA AAAA AAA O A A E A OOO EA 12 5 1 FOWE U a E E A EOE EOE 12 5 2 S A rE O O E E enamine intactranierenuee 12 5 3 Synchronizaton ChE KINE ceesre Ean aea ANa EEEE OE O O OO EESE 12 6 TAHER TEF ATURE iee E E E A E E E A E EE E 14 6 1 Pea BUS E NAO oa E E E E E A RT 14 6 2 Synchronizaionehecking delay Gad a E ROEE E A AAC 14 7 MISCELA EOS EEEE EN 15 7 1 MOUDE NOONE ea o EE EE O O E OE 15 7 2 Declaration of CONTON Z2. Generator phase L1 Battery positive BAT Install the fuses as nearly as possible the unit in a place easily accessible to the user Fuse rating 6A The disconnection device must NOT be fitted in a flexible cord Failure to follow this instruction may damage the unit A60 X2 90020 BEN user manual technical documenlalion www crelechnology com A DANGER The unit must only be installed and serviced by qualified electrical personnel Apply appropriate personal protective equipment PPE and follow safe electrical work practices Turn off power before installing or removing fuses and before installing the unit Use a properly rated voltage sensing device to confirm the power is off Do not use renewable link fuses in fused switch GENERATOR BUSBAR LI L2 ema i LI L2 L3 BATTERY 12 24Voc LOWER CONNECTOR digital inputs and outputs unit power supply To check the connection press the Lamp test button The led SYNCH OUT is not tested A60 X2 90020 BEN user manual technical documentation ww w crelecrnology com UPPER CONNECTOR phase L1 and neutral on both sides of the breaker 1 Make sure the cable connector is NOT plugged on the upper connector 2 Take on protective gloves 3 Connect the wires on the cable connector in accordance with the National Wiring Regulations Term Function Technical data 1 GENERATOR PHASE L1 Generator phase input Connect the generator phase there The generat
3. A a O dy C GEN C bd A SYNCH Nabe L OUT O Bp a 14 A60 X2 90020 BEN user manual technical documenlialion www erelechnology com 7 1 7 2 7 3 MISCELLANEOUS Troubleshooting AC voltages or frequency displayed on the unit are not correct voltage accuracy 3 V e Check the proper engine body grounding e f there are faulty measurements only when the engine is running there may be a faulty charging alternator or voltage regulator on the engine Disconnect the charging alternator connection of the engine and check if the error persists e f there are faulty measurements only when mains are present the battery charger may be failed Turn off the battery charger fuse and check The unit is inoperative e The unit may be in sleep mode Press any button to wake it up A DANGER Do not touch or use non insulated tools near terminals L1 and N These terminals are unprotected and will expose the user to dangerous voltages Failure to follow this instruction will result in death serious injury or equipment damage e Measure the DC supply voltage between terminals 8 and 9 at the rear of the unit If they are in range turn all the fuses off then turn all the fuses on starting from the DC supply fuse Finally test the unit again Lock the rear door The digital display test shows only 1 check the power supply If you return the unit attach an RMA available on the website Declar
4. 65 from front panel IP30 from the rear 16 A60 X2 9 0020 BEN user manual lechnical documenlalion www crelechnology com CRE TECHNOLOGY 130 all e Charles Victor Naudin Zone des Templiers Sophia Antipolis 06410 BIOT FRANCE Phone 33 0 4 92 38 86 82 Fax 33 0 4 92 38 86 83 Website www cretechnology com Email info cretechnology com Technical support 33 0 4 92 38 86 86 office hours 8 30AM 12AM 2PM 6PM GMT 1 Email support cretechnology com SKYPE support cretechnology com voice only A worldwide coverage E I Head Office FRANCE EM Official Distributors LC Agents Check our entire distributors list around the world on www cretechnology com button DISTRIBUTORS 17 A60 X2 90020 BEN CRE TECHNOLOGY has provided the engine and generator industry for over 25 years with standard products and dedicated solutions for engine control generator protection and paralleling All application fields where power is the core resource of performance are covered by CRE TECHNOLOGY The company is a reference in the industrial marine and defense businesses Our very strong situation allows us to invest feeding our ambition to be always more advanced always closer to you The coming years will see the broadening of our distribution network and of our innovative products portfolio BECOME A CRE TECHNOLOGY DISTRIBUTOR USEL manual technical aocumenlalion NEW WEB SITE W W W C relechnolocy
5. EE RE EEEE REESEN 15 7 3 Technical specificat OM Ss ORA iesea E ANEETA E 15 A60 X2 90020 BEN user manual technical documentation ww w crelecrnology com DOCUMENT CONTROL A60 X2 90020 BEN user manual technical documentation ww w crelecrnology com 1 PRESENTATION The unit SCR2 0 is a metering and control module used in manual synchronization and protection panels It monitors the voltage and frequency of two power networks and shows the measured values on its 3 digit 7 segment display The 24 led circular synchroscope indicates the true instantaneous phase angle between the networks It is powered by a battery It can check the synchronization between a generator and its busbar or a generator busbar and mains The measured calculated parameters are e Generator phase to neutral voltage e Generator frequency e Busbar phase to neutral voltage e Busbar frequency e Busbar generator frequency difference e Busbar generator voltage difference e Busbar generator phase difference A WARNING THIS UNIT DOES NOT CHECK THE PHASE SEQUENCE First make sure the two AC supplies feature the same sequence of the phases Failure to follow this instruction can damage the equipment The unit is installer friendly and user friendly In addition programmable parameters give an extended control over the operation The programmed values are stored in a non volatile memory thus all information is retained even in the event of complete los
6. If they are met for 4 consecutive busbar cycles the SYNCH CHECK relay is immediately energized 13 A60 X2 90020 BEN user manual technical documentation ww w crelecrnology com 6 1 6 2 OTHER FEATURES Dead Bus Enable It may be required to couple a generator to an unpowered bus dead bus This is especially the case for multi generator synchronization systems where one of the generators must feed the busbar to serve other generators as a reference for synchronization When active the DEAD BUS ENABLE input signal causes SCR2 0 to energize the SYNCH CHECK relay when all the following conditions are met e synchronization checking requested either via input or button e the generator phase voltage is within limits set by P_O2 and P_03 e the busbar voltage is below the limit set by P_OO If the busbar voltage is above this limit the SYNCH CHECK relay output is not energized even if the DEAD BUS ENABLE signal is active Positions Dead bus Contactor de activated Synchronization checking delay To let the generator stabilize or even heat up if needed program a pre synchronization delay P_08 When the generator voltage is in range the unit is allowed to run this delay at expiry the synchronization checking can be accepted Default factory setting 3 seconds If no delay is requested set the parameter to O Example of remote local request of synchronization checking R E M O T E L BUS
7. and busbar are not in range it is not energized 15 SYNCH CHECK RELAY normally If the busbar is not powered up use the DEAD BUS open ENABLE input signal Refer to OTHER FEATURES The unit checks the synchronization only when both generator and busbar phase voltages are in range and the synchronization is enabled either with the SYNCH CHECK ENABLE signal or the SYNCH button Term Function If the signal is active the unit is allowed to energize the relay output even though the voltage level atthe busbar input is below the set limit Refer to OTHER FEATURES To set the limit refer to PROGRAMMING Input If the signal is active the unit is allowed to close the relay output when the conditions are met Otherwise it does not energize the relay Input If both busbar and generator phase voltages are in range the synchroscope illuminates The synchroscope shows the phase difference between busbar and generator The synchronization checking is the verification of the following conditions the busbar phase voltage lies between limits set by P_OO and P_01 e the generator phase voltage lies between limits set by P_02 and P_03 e the frequency difference between the busbar and generator does not exceed the limit set by P_04 e the voltage difference between the busbar and generator does not exceed the limit set by P_05 e the phase difference between the busbar and generator does not exceed the limit set by P_06
8. ation of conformity The unit conforms to the following EEC directives e 73 23 EEC and 93 68 EEC low voltage e 89 336 EEC 92 31 EEC and 93 68 EEC electro magnetic compatibility Standards e EN61010 safety requirements e EN 50081 2 EMC requirements e EN 50082 2 EMC requirements The CE mark indicates that this product complies with the European requirements for safety health and environ mental and user protection Technical specifications Features e 24 led circular synchroscope e Programmable AV Af AO and parameters e Front panel programming 15 A60 X2 90020 BEN user manual technical documenlialion www erelechnology com e Voltage inputs 1 phase of generator and 1 phase of busbar e Synch check 8 dead bus enable input e Auto poweroff e Plug in connection system for easy replacement Measurements e Busbar voltage 300 VAC max Ph N e Busbar frequency 50 60 Hz e Generator voltage 300 VAC max Ph N e Generator frequency 0 100 Hz Other electrical data e Digital inputs OV active inputs withstand 30VDC e DC Supply Range 9 0 to 33 0 VDC e Current Consumption 100 mA standby 150 mA all LEDs lit Synch Check relay de energized e Synch Check relay breaking capacity 16 A 250VAC Casing e Dimensions 102x102x57 mm 4 in x 4 in x 2 3 in width x height x in panel depth e Mounting Front panel Weight 170 g approx e Material High temperature ABS UL94 VO 100 C e Protection IP
9. com YOUR ACCOUNT 8 YOUR PRICES By creating your account you ll have access to all your personal data All the prices of the new CRE TECHNOLOGY website correspond to your business rates GET INFORMATION THE WAY YOU WANT IT Fill your cart by choosing the products you want and get all the information you need EVERYWHERE WITH YOU The new CRE TECHNOLOGY website is designed to be responsive to smartphones and touch tablets It allows you to consult the documents related to the CRE TECHNOLOGY s ranges of products 18
10. hronization checking Status The SYNCH OUT illuminates when the SYNCH CHECK relay output is ON SCR 2 0 indicates the nature of the displayed value by lighting one unit led in three VAC Hz or degree Colour Description oporem Red or When both busbar and generator voltages are in range the synchroscope illuminates amber Only one of the leds turns on at a time The led indicates the phase difference between the generator phase and the busbar phase Right hand side illuminated the generator phase is leading in advance the busbar Left hand side illuminated the generator phase is lagging Light cycling clockwise generator frequency gt busbar frequency Light cycling counter clockwise generator frequency lt busbar frequency BUS status ON when the busbar voltage is in range GEN status Amber OFF if the generator voltage is out of range Blinks if the generator voltage is in range but SCR2 0 is waiting for a checking request Steadily ON if the synchronization coupling is enabled Output state Amber ON when the SYNCH CHECK relay is energized The synchronization checking can be initiated or terminated u locally by pressing the SYNCH button remotely via the SYNCHRONIZATION CHECK ENABLE input signal The led SYNCH OUT is not energized by the Lamp test Unit Red SCR2 0 selects VAC Hz or Deg depending on the position in the MENU A60 X2 90020 BEN user manual technical documenlialion www erelechnol
11. hronization checking delay The synchronization checking is not timed The unit continues checking the synchronization until the conditions are met or the process terminated with the SYNCH button or the SYNCHRONIZATION CHECK ENABLE signal A closed to open transition on the SYNCHRONIZATION CHECK ENABLE input causes the SYNCH RELAY to de energize and the synchronization checking to terminate Positions Sync En Contactor SYN EN de activated Once the SYNCH CHECK relay is energized the synchronization checking goes on depending on the parameter P_09 Set it to 1 It is of the responsibility of the panel builder to use a quickly closing circuit breaker On O the synchronization checking is disabled after closing the SYNCH CHECK relay the relay output remains energized even though the circuit breaker fails to close 12 A60 X2 90020 BEN user manual technical documenlialion www erelechnology com Description Data BATTERY POSITIVE 12 or 24VDc Positive terminal of the DC supply The unit operates 9 0 33 0 V on both 12V and 24V battery systems BATTERY NEGATIVE OVDC Power supply negative connection DEAD BUS ENABLE u SYNCHRON CHECK ENABLE 11 12 unused 13 SYNCH CHECK RELAY normally Breaking These outputs energize the circuit breaker If the closed capacity 16A generator voltage is out of range or if the voltage SYNCH CHECK RELAY common 220VAC frequency or phase differences between generator
12. ogy com 3 2 Digital display The unit has a three digit seven segment display It shows on request Readings symbol then value in a sequence Programmable parameters number then value in a sequence Scan the various readings using the MENU button The sequence is U1 busbar phase to neutral voltage U2 generator phase to neutral voltage dU voltage difference between busbar and generator phases F1 busbar frequency F2 generator frequency dF frequency difference between busbar and generator deg phase difference between busbar and generator phases degrees Hold down the button to display the value 10 A60 X2 90020 BEN user manual technical documenialion www erelechnology com 4 PROGRAMMING A WARNING RISK OF UNINTENDED EQUIPMENT OPERATION Set the parameters to values that do not endanger your setup We strongly recommend to keep the parameter 9 to 1 Failure to follow this instruction can damage equipment The program is used mainly to specify operational limits To enter the program press the MENU button for 5 seconds During programming the unit still monitors and shows the statuses Thus the parameters can be modified anytime even while the generator is running When the MENU button is pressed the display shows the parameter number when it is released the display shows the program parameter value The first program number is OOO Press the MENU button to switch to next parameter Af
13. or 0 300VAC phase voltage upper and lower limits are programmable 2 used GENERATOR NEUTRAL Input 0 300VAC Neutral terminal of the generator phase a unused BUSBAR NEUTRAL Input 0 300VAC Neutral terminal of the busbar phase 6 uused 7 BUSBAR PHASE L1 Busbar phase input Connect the busbar phase there The busbar voltage 0 300VAC upper and lower limits are programmable 4 Plug the cable connector onto the upper connector 5 Lock the rear door A DANGER Do not touch or use non insulated tools near terminals L1 and N These terminals are unprotected and will expose the user to dangerous voltages Failure to follow this instruction will result in death serious injury or equipment damage A60 X2 90020 BEN user manual technical documenlialion www erelechnology com 3 HUMAN MACHINE INTERFACE The information is displayed as follows Output R P State Unit 5 VALUE bn Status I pr 5X The Synchronoscope shows the instantaneous phase difference between the generator voltage and the busbar voltage 3 1 LED display When both networks are synched the uppermost led at 12 00 marked 02 is ON When the generator frequency is higher than the busbar frequency the synchroscope turns clockwise When the generator frequency is lower than the busbar frequency the synchroscope turns counter clockwise The Status shows the current status of the busbar and generator voltages and the sync
14. s of power Designation SCR 2 0 A60 X2 A60 X2 90020 BEN user manual technical documenlialion www erelechnology com 2 1 2 2 2 3 2 4 2 5 INSTALLATION The unit is designed for panel mounting which provides user with access only to the front panel Environmental Requirements e Operating temperature 20 C 4 F to 70 C 158 F e Storage temperature 30 C 22 F to 80 C 176 F e Maximum humidity 95 without condensation Unpacking Make sure the packaging contains e the unit e two clamping sets packaged apart e adelivery bill Unpack and keep the packaging in event of return Make sure the unit does not show scratches or visible defaults Otherwise describe them on the bill Preparation 1 Cut out the panel to 92x92 mm minimum 3 6 in x 3 6 in 2 Make sure the cut out is smooth and clean Mounting the Unit Tool cross head screwdriver size 1 To mount the unit 3 Pass the unit through the panel 4 Inthe rear insert the tab of a clamping set into the hole on one side of the unit and screw the unit against the panel Repeat on the other side Tighten equally on both sides Wiring the Unit Tool insulated screwdriver 02 5 mm 0 1 in tightening torque 0 8 Nm 7 Ib in max Wires 0 2 2 5 mm AWG 25 14 Accessories 7 terminal cable connector protective gloves carpet if the floor is wet A WARNING THE UNIT IS NOT PROTECTED Use external fuses for Busbar phase L1
15. ter the last parameter the display cycles to the start Press the A VW keys to increase decrease the value Hold them down to increase decrease the value by steps of 10 units The program display goes off automatically after 20 seconds if no button or key is pressed Unit Typical Status or description Busbar Voltage Low Limit 100 Under this limit the busbar voltage is invalid out of range Busbar Voltage High Limit Over this limit the busbar voltage is invalid out of range RE EE A Under this limit the SYNCH CHECK relay cannot remain energized Over this limit the SYNCH CHECK relay cannot remain energized KG Le is above this limit the synchronization is denied above this limit the synchronization is denied Definition Phase difference deg 5 If the phase difference between the busbar and the generator voltages is above this limit the synchronization is denied 7 Hysteresis Voltage V To prevent faulty decisions you can set a hysteresis to the busbar and generator voltage limits Recommended value 8 V For example if the busbar voltage decreases it goes out of range at P_000 whereas it returns in range at P 000 P_007 Synchronization checking sec 3 Timer launched after the generator voltage is in range set by delay parameters P_002 and P_003 and the synchronization checking is enabled Refer to OTHER FEATURES Synchronization checking 1 0 the SYNCH CHECK relay remains energized after coupling 1 the
16. unit continues to check the synchronization 11 A60 X2 90020 BEN user manual technical documentation ww w crelecrnology com 5 5 1 5 2 5 3 OPERATION A CAUTION RISK OF ERRONEOUS MEASUREMENTS Ground the engine body Failure to follow this instruction result in incorrect measurements Power up The unit is designed for continuous operation powered by the generator battery voltage 12 24VDQ It shuts off its displays after 1 mn if there is no voltage at the AC inputs and if no button is pressed It starts to monitor when a voltage is applied to either generator voltage input or busbar voltage input or any front panel button is pressed The synchroscope illuminates if both generator and busbar phase voltages are in range Otherwise it turns off to prevent the display of worthless information Status information Refer to HUMAN MACHINE INTERFACE Synchronization checking The synchronization checking is ordered e either locally by pressing the SYNCH button e orremotely via the input signal SYNCHRONIZATION CHECK ENABLE Then the unit is allowed to close the relay output if the networks are synched Otherwise it does not close the relay even if the networks are synched For a quick checking after the generator start connect the SYNCHRONIZATION CHECK ENABLE input signal to the battery negative To let the generator stabilize or even heat up if needed program a pre synchronization delay P_08 Refer to Sync
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