GE Entelli-Switch 250 User's Manual
Contents
1. Figure 2 Typical Initial Energization Before proceeding refer to the information package supplied with the ATS and read and understand the information on all accessories provided 1 Unlock the enclosure 2 Open the enclosure 3 Verify the correct system voltage NOTE The equipment rating nameplate on the transfer switch lists the voltage See Figure 3 4 Close Source 1 circuit breaker NOTE The controller will illuminate Source 1 Available LED if proper voltage is sensed 5 Verify the phase to phase voltages at Source 1 line terminals 6 Close Source 2 circuit breaker 7 Start the generator s engine NOTE The controller will illuminate Source 2 Available LED when preset voltage and frequency levels are reached 8 Verify the phase to phase voltages at Source 1 line terminals rn 9 Verify that the phase rotation of Source 1 is the same as the phase rotation of Source 2 B 10 Shut down the generator s engine h 11 Place the starting control in the Automatic position 12 Complete the visual inspection of the transfer switch 13 Close the enclosure 14 Lock the enclosure GE Zenith Controls SERIAL NUMBER RATING VOLTS AMPS SYSTEM VOLTS MODEL NUMBER Figure 3 A CAUTIONS Certain accessories per specific schematics can inhibit automatic transfer Engine Gen Set could start when engine control wires are attached Entelli Switc2. Table 2 Accessories 6P e e e A1 O e ATE O e o o 4 e o o Calibrate e e e eo e e CDT o CDP o Q e DS o o o e DT o o o DW o e E o o EL P o e 9 e K P e o o L1 o o o O L2 e O O e L3 L4 o o e o o LN e o e o e P1 e d e 02 O o 6 e 03 Q O 07 O O o o R1 1 O O O 9 R1 3 O 15 R15D O O O O o R16 O o o o e R50 e e o 55 S12P 2 o S13P e 6 o o T3 W3 2 2 o e o e UMD 2 2 VI e o e w o o e Standard Accessory included in the group package O Optional Accessory not included but can be added to group package Optional Accessory Can not be used with accessory having the same symbol eoo E an Accessory with 2 circuits as a standard Delayed Transition Units Only Denotes an Accessory with 3 circuits as a standard Optional for 40 400 Amp m 10 Entelli Switch 250 Operation and Maintenance Manual 71R 2000 GE Zenith Controls m Accessory Definitions 6P Test Switch Momentary 6A Test Switch Maintained Auto Momentary Test 6AP Test Switch Maintained Momentary utilizing keypad 6B Test Switch Maintained Auto Momentary Test
3. A periodic test of the transfer switch under load conditions is recommended to insure proper operation See National Electric Code articles 700 and 701 Closed Transition GE Zenith Closed Transition Transfer Switches are designed to Transfer the Load between two available sources with out interrupting power to the Load Make Before Break Paralleling of the two sources occurs within a predefined window of synchronization and lasts less than 100 milliseconds The initial Source is then disconnected Initiating a Closed Transition When a Test is initiated the controller initiates the Time Delay Source 2 Start Engine Start Timer P cycle Upon completion of the P time delay an Engine start Signal is sent to Source 2 When Source 2 voltage and frequency reach the preset Restore values the time delay to open Source 1 timer W begins its timing cycle After the W time delay the ATS closes into Source 2 only after the controller ensures the prop er phase relationship between the two Sources After the ATS closes into Source 2 the SE limit switch becomes activated to de energize the CCE relay and energize the CCNO relay which opens the ATS out of Source 1 The SNO limit switch activates to de energize the CCNO relay The ATS has now closed into Source 2 position without interrupting the load Re Transfer with Closed Transition Deactivating the Test Switch initiates the re transfer When Source 1 voltage and frequency rea
4. relate to a Normal Power Source All references made about the term S2 or Source 2 relate to an Emergency or Alternative Power Source Safety Installation A DANGER A HAZARDOUS VOLTAGE Can Cause Severe Injury or Death Turn OFF all power before installation adjustment or removal of transfer switch or any of its components The safe operation of your switch is GE Zenith s focus The proper storage installation operation and mainte nance will help increase the life of the switch A CAUTION A Due to hazardous voltage and current GE Zenith rec ommends that a GE Zenith Certified technician or a qualified electrician must perform the installation and maintenance of the switch Equipment Inspection and Storage Once you have received the transfer switch inspect it for any damage This includes damage to the enclosure power panel control panel and wiring harness If any damage is found or suspected file a claim as soon as possible with the carrier and notify the nearest GE Zenith representative Before installation if it is necessary store the transfer switch in a clean dry place protected from dirt and water Provide ample air circulation and heat if neces sary to prevent condensation Operating Storage Temperature Temperature Ambient Humidity 30 C to 40 400 AMP 5 to 95 75 C molded shell non con 22 F to 20 C to 65 C densing 167 F AF to 149 F 40 4000
5. Entelli Switch 250 Microprocessor Controller Transfer Switch Control Panel Pagg Entelli Switch 254 zx Operation and Maintenance Manual Authorized Service For GE parts and service call 773 299 6600 Table of Contents Introduction scene ca IRI mE Ve 2 Testing de p RERO a ES ERU 20 Safety xe 3 Introduction 20 Equipment Inspection and Storage 3 Test Options eee 20 Final Equipment Inspection 3 Standard Transition 21 Installation 4 Delayed Transition 21 Engine Start Control Connections 4 Closed Transition 22 Initial Energization_ 4 5 Emergency Service Procedure Control Connections 6 for Extended Parallel Time 23 Entelli Switch 250 Microprocessor Controller 7 Sequence of Operation 24 OVERVIEW bep onde dO 7 Standard Transition 24 LCD amp Keypad 8 Delayed Transition 24 User Setting for Voltage amp Frequency 9 Closed Transition 25 Accessory Group Packages 10 Relay Transformer R T Box 26 Accessory Definitions 11 14 Standard aa Bes eae ga 26 How to Set the System Clock 14 Delay ag they
6. Factory Default 105 This adjustment determines the maximum acceptable Over Frequency Adjust via the SET menu Range is 103 to 105 in 1 increments see page 18 Once exceeded the P timer begins timing to signal the generator to start Source 2 Under Voltage Restore Factory Default 90 This adjustment determines the minimum acceptable voltage required to transfer to Source 2 Adjust via the SET menu Range is 85 to 100 in 1 increments see page 18 Once satisfied the W timer will begin timing to transfer to Source 2 Under Voltage Fail Factory Default 80 This adjustment determines the low voltage threshold Adjust via the SET menu Range is 75 to 98 in 1 increments see page 18 Fail must be a minimum of 2 below Restore setting Once voltage falls below threshold T timer will be bypassed to expedite the transfer to Source 1 Over Voltage Fail Factory Default 110 This adjustment determines the maximum acceptable Over Voltage Adjust via the SET menu Range is 105 to 110 in 1 increments see page 18 Once exceed ed the T timer will be bypassed to expedite the transfer to Source 1 Over Voltage Restore Factory Default 105 This adjustment determines the minimum acceptable Over Voltage threshold at which the transfer switch is allowed to transfer to Source 2 Adjust via the SET menu Range is 103 to 105 in 1 increments see page 18 Restore must be a minimum of 2 b
7. CONFG CLOCK EXERCISER shows DAILY WEEKLY 14 DAY 28 DAY or 365 DAY as desired press MORE repeatedly to BACK Press ESC then proceed to the SET menu to set the EXERCISER 5 Ifthe third line of the CONFG CLOCK EXERCISER shows OFF continue Press SEL Enter ACCESS code located on white label on the back of the controller 8 Press UP or DOWN to select DAILY WEEKLY 14 DAY 28 DAY or 365 DAY as desired 9 Press SAVE 10 Press MORE repeatedly to BACK then ESC to S1 OK screen How to set SET the DAILY Exerciser 1 Beginning from the 1 OK screen press MORE then SET 2 Press MORE repeatedly until SET EXERCISER screen 3 Press SEL 4 Enter ACCESS code located on white label on the back of the controller 5 Press SEL Indicates of Exercise Periods Indicates type of Exerciser DAILY WEEKLY 14 DAY 28 DAY or 365 DAY Indicates Exerciser start Time for DAILY Exerciser Time amp Day for WEEKLY Exerciser Time Date amp Month for 14 DAY 28 DAY and 365 DAY Exerciser 24 Hour System Cursor Up and Down Use to change values To previous field or to exit screen 2 6 Cursor is indicated as a line under character to be changed Change values with up and down keys Press SAVE after each entry to save value and to move to the next value to be changed 7 Press BACK when complete 8 Press MORE repeatedly until SET USER SETUP Press BACK then ESC to the S1 OK scre
8. Press START TEST TIMER to initiate Test e Ifthe CDT Exerciser is Factory configured for a Load Exerciser the Controller will immediately start a load exercise The controller will start the generator transfer the load to Source 2 and remain in Source 2 for the duration set for EXER 52 RUN TIME in the SET menu The controller will retransfer the load back to Source 1 after the SI stable timer has timed out and run the generator unloaded for the duration of the S2 stop delay timer Engine Cool Down Timer e If the CDT Exerciser is Factory configured for a No Load Exerciser the Controller will immediately start a No load exercise The controller will start the generator and run it unloaded for the duration of the S2 stop delay timer Engine Cool Down Timer Exercise will be repeated at the same time as initiated on every 1 7 14 or 28 days according to the selection made in the Configure CFG menu How to Bypass Cancel an exercise during an exercise cycle 1 Press BPASS 2 Allow the controller to complete the Engine cool down cycle If the CDT Exerciser is Factory configured for a No Load Exerciser Or allow the controller to complete retransfer to Source 1 If the CDT Exerciser is Factory configured for a Load Exerciser How to Bypass the next exercise event and Keep the rest of scheduled events unchanged 1 Press Test 2 Press MORE 3 Press BYPASS EXER To re institute the next exercise event back press CANCL BPASS Ho
9. two available sources with out interrupting power to the Load Make Before Break Paralleling of the two sources occurs within a predefined window of synchronization and lasts less than 100 milliseconds The initial Source is then disconnected Initiating a Closed Transition When a Test is initiated the controller initiates the Time Delay Source 2 Start Engine Start Timer P cycle Upon completion of the P time delay an Engine start Signal is sent to Source 2 When Source 2 voltage and frequency reach the preset Restore values the time delay to open Source 1 timer W begins its timing cycle After the W time delay the ATS closes into Source 2 only after the controller ensures the proper phase relationship between the two Sources After the ATS closes into Source 2 the SE limit switch becomes activated to de energize the CCE relay and energize the CCNO relay which opens the ATS out of Source 1 The SNO limit switch activates to de energize the CCNO relay The ATS has now closed into Source 2 position without interrupting the load Re Transfer with Closed Transition Deactivating the Test Switch initiates the re transfer When Source 1 voltage and frequency reach the preset Restore values the time delay to open Source 2 timer T begins its timing cycle After the T time delay the ATS closes into Source 1 only after the controller ensures the proper phase relationship between the two Sources After the ATS closes into Sou
10. AMP all other frame and panel types 20 C to 60 C AF to 140 F Table 1 Final Equipment Inspection Prior to energizing the transfer switch 1 Remove any debris incurred with a vacuum due to shipment or installation 2 Verify that all cabled connections are correct and that phase rotation of both sources match 3 Check engine start connections 4 Verify the correct connection of all control wires 5 Check settings of all timers and adjust as necessary 6 Adjust any optional accessories as required 7 Check the lug torque values of the power connections NOTE Lug torque values are specified in the power panel manual 8 Make sure that all covers and barriers are installed and properly fastened NOTE Power panels ship from GE Zenith in Source 1 Position A WARNING A Do not use a blower since debris may become lodged in the electrical and mechanical components and cause damage Each GE Zenith transfer switch is factory wired and tested A complete information package is furnished with each switch which includes a Sequence of operation b Description and operation of all accessories supplied c Power panel connection diagram and schematic d Description and identification of all customer field connections Installation of GE Zenith transfer switches includes a Mounting the transfer switch cabinet b Connection of Source 1 Source 2 and Load cables or bus bars c Connection of e
11. Auto Position Full Transfer Test This test checks the complete operation of the ATS by transferring the load s power source from Source 1 to Source 2 2 Test Position This procedure is recommended for Preventive Maintenance PM of ATS without interrupting the Load thru the BYPASS ISOLATION SWITCH NOTE A periodic test of the transfer switch under load conditions is recommended to insure proper operation See National Electric Code articles 700 and 701 A WARNING A When performing a hi pot or dielectric test on the power section DISCONNECT the control panel plugs from the microprocessor to avoid potential damage m 20 Entelli Switch 250 Operation and Maintenance Manual 71R 2000 GE Zenith Controls Testing conta A NOTICEA A periodic test of the transfer switch under load conditions is recommended to insure proper operation See National Electric Code articles 700 and 701 ATS Testing Start generator and verify proper voltage frequency and phase sequence match to Source 1 Shut down gen set and place in Auto Complete the visual inspection of the transfer switch and close the cabinet door Initiate the test by pressing the TEST button on the LCD keypad The controller will then prompt for your access code After entering the code three test options will appear XFR LOAD FAST TEST and NO XFR See Figure 11 LOAD test starts the generator and using the current timer settin
12. CCESS CODE located on the white label on the back of the controller Press SEL 6 7 Use the up and down keys to change the hour value 8 Press SAVE this will enter this value and move cursor to minutes 9 Use the up and down keys to change the minutes 10 Press SAVE this will enter this value and move cursor to month 11 Use the up and down key up to change the month 12 Press SAVE This will enter this value and complete the clock setting 18 Use the up and down keys to change the date 14 Press SAVE this will enter this value and move cursor to year 15 Use the up and down keys to change year 16 Press SAVE this will enter this value and compete the clock setting 17 To edit settings press SEL and repeat steps 6 16 18 If the setting is satisfactory press MORE unit then returns to the SET menu then press BACK then ESC Replacement battery part K 4100 Battery will last 5 years and provides power to retain clock function only Controller functions without battery m 14 Entelli Switch 250 Operation and Maintenance Manual 71R 2000 GE Zenith Controls CDT One EventTimer Exerciser Load or No Load One event Exerciser with adjustable Timer Exercise duration can be set between 5 and 60 minutes in 1 minute increments Can be configured to run every 1 7 14 or 28 days Factory default is 20 minutes How to CONFIGURE CFG and Set SET the Timer Exerciser 1 Beginning from th
13. E pg 9 Fail Restore 2 UNDER FREQUENCY pg 9 Fail Restore 52 OVER VOLTAGE pg 9 Fail Restore 2 OVER FREQUENCY pg 9 Fail Restore SET PHASE IMBALANCE VI FAIL 5 RESTORE 3 pg 14 SET PHASE IMBALANCE VI TIME DELAY 30 seconds pg 14 Change adjustable values through the SET menu Enter six digit access code The factory assigned six digit access code is located on the back of the controller 40 41 9 H4 01 Lo Engine Start Relay lt Network Communications Option J2 H oci H PRoG2 O GRD Input Sink H tsour 5 NIA OUT L amp Ev PRE OUT LL ALARM OUT ls STEOUT Im MOTOR DISC OUT C O 112 isin gt 51 O 14 1 gt 52 iB ts inputand output availability subject to factory configuration J G 2 12V Output Source 4 mout 5 l Bou O wour 3 19 vein 1 O 12 y 1B siziN ssin Q Controller inputs must be relay isolated Y Input Voltage l vl wi 4 Customer 6 s e z s HEN 2 22 3 NO NC To J2 J4 Input Controller ouputs have limited source capability Use only GE Zenith specified output modules B Output Conta
14. Failures Time SI available in Hrs Time S2 available in Hrs 31 F Fan contact operates when generator is running HT Heater and Thermostat K Frequency Meter Door mount K P Frequency Indication for S1 and S2 L LNP Center off position LCD Indicator Indicating LED lights L1 Indicates Switch in Source 2 position L2 Indicates Switch in Source 1 position L3 Indicates Source 1 available L4 Indicates Source 2 available W GE Zenith Controls Entelli Switch 250 Operation and Maintenance Manual 71R 2000 11m Accessory Definitions conta M1 Single Phase Amp Meter M2 Three Phase Amp Meter M80 3000 Digital Power Monitor M82 5200 Digital Power Meter M833A EPM 5300 Digital Power Meter with Modbus Port M33B EPM 5350 Digital Power Meter with Ethernet Port M34 7430 Digital Power Meter Wye or Delta M385A EPM 9450 Digital Power Meter Ethernet MB85B EPM 9450 Digital Power Meter with Internal 56K Mod 86 9650 Digital Power Meter Wye or Delta RS232 or RS485 M86B EPM 9650 Digital Power Meter Wye or Delta RS232 or RS485 N1 Running Time Meter Door mount N2 Operation Counter Door Mount P1 Time Delay Source 2 Start Adjustable 0 10 seconds Standard setting is 3 seconds Adjust via SET menu see page 18 P2 Time Delay S2 Start Adjustable 1 6 to 300 seconds Q2 Remote Peak Shave or Area Protection Circuit Energize Q2 to simu
15. Key Operated 6C Test Switch Maintained Auto Maintained Test Key Operated A1 Auxiliary Contact operates on Source 1 line failure ATE Auxiliary Contact operates on Source 2 line failure A3 Auxiliary Contact Closed in emergency Source 2 Additional Available 10 max and need to be specified 4 Auxiliary Contact Closed normal Source 1 Additional Available 10 max and need to be specified A62 Sequential Universal Motor Load Disconnect Circuit Normally closed auxiliary contacts for motor loads Open 0 60 seconds prior to transfer after transfer or both in either direction then re close in timed sequence after transfer ABS Auxiliary Contact Closed in bypass emergency Source 2 S P D T Standard up to 400 Amp Additional Available 10 max and need to be specified AB4 Auxiliary Contact Closed in bypass normal Source 1 S P D T Standard up to 400 Amp Additional Available 10 max and need to be specified B9 Battery charger connections Calibrate While monitoring the actual Phase to Phase voltage lev els and Frequency with a calibrated test equipment the Phase to Phase voltage sensing and Frequency can be adjusted accordingly Calibration capabilities are available for Frequency and AB BC CA Phase to Phase voltage for both Sources Adjust via SET menu see page 18 CDP Clock Exerciser Load No Load Allows the Generator to start and run unloade
16. ON SINGLE PHASE SOURCE 2 SENSING 3 PHASE SOURCE 1 SENSING SOURCE 1 CONTROL POWER SOURCE 2 CONTROL POWER Figure 16 m28 Entelli Switch 250 Operation and Maintenance Manual 71R 2000 GE Zenith Controls m Troubleshooting Diagnostics A DANGER A HAZARDOUS VOLTAGES CAN CAUSE SEVERE INJURY OR DEATH These charts may indicate problems that require authorized GE Zenith service personnel Hazardous voltages may exist on termination plugs other than those that go into the Entelli Switch 250 General Troubleshooting The following troubleshooting guide is used to recognize and determine basic faults When using this guide it will ask several questions about the condition of the switch This guide will then list an order of the possible faults You will then look at the first suspected fault to determine if it is the problem If it is not a fault you go to the Engine does not START Engine does not stop ATS will not transfer to SOURCE 2 Annunciation SOURCE 2 AVAILABLE LED off LCD Display TD Engine Cool Down second suspected fault If you go through all of the suspected faults or the chart instructs you to call a GE Zenith Representative for further assistance NOTE When you use the troubleshooting charts the Annunciation column refers to the LED s on the control panel Possible Cause s Engine start wires not termina
17. ages include all the options that can reside in the controller Not all units include all options Source 2 Position LED Red indicates Power Panel ATS is closed to Source 2 position Source 1 LED Green indicates Source 1 is acceptable for use Source 1 Position LED Green indicates Power Panel ATS is closed to Source 1 position Source 2 Red indicates Source 2 is acceptable for use LCD Screen CurrentTime Day and Date of Display Menus MORE CFG TEST Entelli Switch 250 1 or the word 2 or the word on the LCD above the key The word above the key changes depending on which screen is being displayed Figure 8 S1 OK 01 50 FRI 31 MAY 2003 MORE CFG TEST SET on the LCD above the key The word above the key changes depending on which screen is being displayed Exercise Event Impending E SET Menu 4 or the word on the LCD above the key The word above the key changes depending on which screen is being displayed 3 or the word on the LCD above the key The word above the key changes depending on which screen is being displayed as Entelli Switch 250 Operation and Maintenance Manual 71R 2000 GE Zenith Controls User Setting for Voltage amp Frequency Standard 3 Phase Sensing on 3 and 4 Pole Units Source 1 Under Voltage Restore Factory Default 90 This adjustment determines the minimum acceptable voltage required to transfer to So
18. art No at 50 60 Hz Part No Part No See Chart Transformer 25 VA 50P 1034 120V 50P 1035 208 220V K 1260 Coil Control Relay 24V 50P 1036 230 240V 50P 1037 277V 50P 1038 380 400V 50P 1039 416 440V 50P 1040 460 480V 50P 1041 575 600V See Chart Transformer 1 VA m GE Zenith Controls Entelli Switch 250 Operation and Maintenance Manual 71R 2000 27m Relay Transformer R T wona Standard Transition R T Box Schematic 20 21 22 30 31 32 XN1 SOURCE 1 CONTROLTRANSFORMER XN2 SOURCE 1 3 PHASE SENSING TRANSFORMER XE1 SOURCE 2 CONTROLTRANSFORMER XE2 SOURCE 2 3 PHASE SENSINGTRANSFORMER faa SOURCE 2 24V OUTPUT SOURCE 1 24V OUTPUT 3 PHASE SOURCE 2 SENSING BLANK BLANK GROUND CCE COIL CONTROL RELAY SOURCE 2 CCN COIL CONTROL RELAY SOURCE 1 COMMON SINGLE PHASE SOURCE 2 SENSING 3 PHASE SOURCE 1 SENSING SOURCE 1 CONTROL POWER 906 905 SOURCE 2 CONTROL POWER 1 J5 Figure 15 Delayed Closed Transition R T Box Schematic XN1 SOURCE1 CONTROLTRANSFORMER XN2 SOURCE1 PHASE SENSING TRANSFORMER XE1 SOURCE 2 CONTROLTRANSFORMER XE2 SOURCE 2 3 PHASE SENSINGTRANSFORMER SOURCE 2 24V OUTPUT SOURCE 1 24V OUTPUT 3 PHASE SOURCE 2 SENSING CCEO COIL CONTROL RELAY OPEN SOURCE 2 CCNO COIL CONTROL RELAY OPEN SOURCE 1 GROUND CCE COIL CONTROL RELAY SOURCE 2 CCN COIL CONTROL RELAY SOURCE 1 COMM
19. ay Restoration of Source 1 Power Deactivating the test switch initiates re transfer to Source 1 sequence The delay to Source 1 Timer T begins its timing cycle to ensure voltage and frequency stabilization before retransfer A manual pushbutton BYPASS is provided to bypass the T time delay if desired After the T time delay the CCN relay energizes the CN solenoid to retransfer the switch to Source 1 The SN limit switch activates to de energize the CCN relay Immediately after re transfer the 52 Stop Delay Timer Delay to Engine Stop U begins its cycle to allow Source 2 Engine SYSTEM TEST FAST XFR NO MORE TEST LOAD XFR Entelli Switch 250 Figure 11 to run unloaded A manual pushbutton BYPASS is provided to bypass the U time delay if desired Upon completion of the U timing cycle the controller sends an Engine stop signal Delayed Transition Source 1 Power Failure When the test is initiated the controller initiates the Time Delay Source 2 Start Engine Start Timer P cycle A manual CANCEL button is provided to cancel the test if desired Upon completion of the P time delay an Engine start Signal is sent to Source 2 When Source 2 voltage and frequency reach the preset Restore values the time delay to open Source 1 timer W begins its timing cycle to ensure voltage and frequency sta bilization before re transfer A manual pushbutton BYPASS is provided to bypass the W time delay if desired Afte
20. case of manual trans fer switches or in other applications not requiring the microprocessor clearly marked terminal blocks are provided in the upper left corner of the control panel for the engine start control wires 6 Entelli Switch 250 Operation and Maintenance Manual 71R 2000 GE Zenith Controls m Entelli Switch 250 Controller Entelli Switch 250 Controller Consists of two major assemblies Engine Start Relay P I The Microprocessor contains the following VO Interface Entelli Switch 250 Board A Entelli Switch 250 Board Customer Input and Output I O for system interface Located on the left hand side of the back of the unit see figure 6 l 1 0 accessories that can be found here are a Engine start relay P output Battery Strip b Pre Signal to transfer and and UMD output optional Pu Code Label c Transfer Inhibit Q3 and Q7 input optional d Remote test Q2 input optional Network interface ZNET input output optional B LCD and Keypad located on the exterior of the door see figure 7 1 User accessibility to the following a LED indication of source availability b LED indication of transfer switch position c LCD screen indicates 1 timer count down numeric T 4 amp Box 2 event reporting text d Keypad provides user interface to in conjunction with LCD screen 1 Setting sensors and timers 2 Configuring logic accessories The R T bo
21. ch the preset Restore values the time delay to open Source 2 timer T begins its timing cycle After the T time delay the ATS closes into Source 1 only after the controller ensures the proper phase relationship between the two Sources After the ATS closes into Sourcel the SN limit switch becomes activated to de energize the CCN relay and energize the CCEO relay which opens the ATS out of Source 2 The SEO limit switch activates to de ener gize the CCEO relay The ATS has now closed back into Source 1 position without interrupting the load The ATS defaults to an open transition transfer when Source 1 fails Closed transition transfer is not possible with only one source available If the optional Transition Mode Selector TMS is available one can select an Open Transition Transfer or a Closed Transition Transfer when both Sources are available If while in Closed Transition Mode the ATS fails to open the source it is attempting to transfer out of within 100 milliseconds an Alarm will sound and the source that the ATS just closed into will be opened leaving the ATS in its initial source while disabling all other transfer operations until the problem is corrected and the Fail to Open Lockout Reset has been pressed A signal will be provided STE to Shunt Trip the Generator Circuit Breaker if the Transfer Switch remains closed into both Sources for more than 325 milliseconds The load will then be fed by the Source 1 The max
22. cts 2 6 1 From J2 J4 to Output w ourpurcontacts i5 3 16 L u 5 King 4 R112 Rm 6 output SAHA ouput O FF R215 9 output 9 1 ouput Oo FF Contact Rating 10A 277VAC or 30VDC Lithium Battery Exerciser Battel Replacement K 4100 BR2032 akaca Life 10 Years User Access Code Information 24 Hour Service 773 299 6600 TIME DELAY S2 START P1 pg 12 TIME DELAY S2 STABLE W pg 14 LOAD PRESIGNAL TD T3 W3 pg 13 LOAD DISCONNECT TD UMD pg 13 ATS OPEN TIME TO S2 DW DELAY units only pg 11 TIME DELAY S1 STABLE T pg 13 ATS OPEN TIME TO S1 DT DELAY units only pg 11 S2 STOP DELAY U pg 13 CALIBRATE S1 pg 11 CALIBRATE S2 pg 11 Optional Accessories Figure 10 m 18 Entelli Switch 250 Operation and Maintenance Manual 71R 2000 GE Zenith Controls Entelli Switch 250 User Setup System Info View System Data S1 OK 01 50 n FRI 31 MAY 2003 Enter six digit access code _ MORE TEST The factory assigned six digit access code n is located on the back of the controller e 5 WARNING PHASE TO PHASE VO LTAG E S1 amp S2 19 Controller inputs must be relay isolated lt Network C
23. d or to simulate a power failure start Generator and run under load Can be configured by end user for 1 7 14 28 365 day cycle See page 16 CDT Load or NO Load One event exerciser with adjustable Engine exercise timer Exercise duration can be set between 5 and 60 minutes in 1 minute increments Can be configured to run every 1 7 14 or 28 days Factory Default is 20minutes When exerciser is impending E appears in the upper right hand corner of LCD screen See page 15 for instructions Configured via CFG see page 17 Set via SET menu see page 18 CTAP Alarm Panel on transfer to Source 2 with Silence button DS Disconnect Switch Auto Inhibit Inhibits transfer in either direction when in inhibit Allows automatic operation when in Auto 40 400 Amps optional 600 4000 Amps standard DT Delayed Transition Only Time Delay from Neutral Switch position to Source 1 position Adjustable 0 10 minutes in 1 second incre ments Standard setting is 5 seconds Adjust via SET menu see page 18 DW Delayed Transition Only Time Delay from Neutral Switch position to Source 2 position Adjustable 0 10 minutes in 1 second incre ments Standard setting is 5 seconds Adjust via SET menu see page 18 Engine Start Contact EL P Event Log Sequentially Numbered Log of 16 events that track date time reason and action taken System Data Total Life Transfers N2P Days Powered Up Total Transfers to S2 Total S1
24. ded to bypass the T time delay if desired After the T time delay the CCEO relay energizes the CEO solenoid to open the switch out of Source 2 position The time delay to Source 1 timer DT begins its timing cycle After the DT time delay the CCN relay ener gizes the CN solenoid to complete re transfer of the switch to Source 1 The SN limit switch activates to de energize the CCN relay Immediately after re transfer the S2 Stop Delay Timer Delay to Engine Stop U begins its cycle to allow Source 2 Engine to run unloaded A manual pushbut ton BYPASS is provided to bypass the U time delay if desired Upon completion of the U timing cycle the controller sends an Engine stop signal Table 3 Timer Designations as they appear in the SET menu ATS Type W DW Standard Transition Time Delay S2 Start Time Delay S2 Stable Delay Open Transition Time Delay S2 Start Time Delay S2 Stable Source 1 Transfer to Source 2 Fails ATS Open Time to S2 T DT U Time Delay S1 Stable 52 Stop gt Delay Time Delay S1 Stable ATS Open Time to SI 52 Stop Delay Transfer to Source 1 Engine S 1 iis Cooldown Returns m 24 Entelli Switch 250 Operation and Maintenance Manual 71R 2000 GE Zenith Controls Sequence of Operation wona Closed Transition GE Zenith Closed Transition Transfer Switches are designed to Transfer the Load between
25. e LED will turn off NOTE The engine generator will continue to run for the duration of Source 2 Stop Delay Timer 10 Place the disconnect switch to ENABLE 11 Complete the visual inspection of the transfer switch 12 Close the enclosure 13 Lock the enclosure WARNING A When performing a hi pot or dielectric test on the power section DISCONNECT the control panel plugs from the microprocessor to avoid potential damage m GE Zenith Controls Entelli Switch 250 Operation and Maintenance Manual 71R 2000 5m Installation cong A DANGER A HAZARDOUS VOLTAGE Can Cause Severe Injury or Death Turn OFF all power before installation adjustment or removal of transfer switch or any of its components Control Connections Figure 5 Engine Start Connections Input Output Connectors to I O Modules X MA TIENDEN To Power Panel A complete information package is furnished with each transfer switch including a complete connection diagram and schematic which details all necessary control circuit field connections The engine start control wires connect to the engine start relay terminals located to the left of the microprocessor Figure 5 shows the location of these terminals Clock Program Backup Battery Remove protective strip to enable clock functions Network Connector To R T Box The terminals are clearly identified by a label on the microcontroller backplate In the
26. e S1 OK screen press MORE then CFG 2 Press MORE to scroll to CONFIG TIMER EXERCISER screen 3 The third line of the CONFG TIMER EXERCISER will show either DAILY WEEKLY 14 DAY 28 DAY or OFF 4 If the third line of the CONFG TIMER EXERCISER shows DAILY WEEKLY 14 DAY or 28 DAY as desired then proceed to step 10 5 If the third line of the CONFG TIMER EXERCISER shows OFF or if another timer selection is desired continue 6 Press SEL 7 Enter ACCESS code located on white label on the back of the controller 8 Press UP or DOWN to select DAILY WEEKLY 14 DAY or 28 DAY as desired 9 Press SAVE 10 Press MORE to scroll to CONFG TIMER EXERCISER XFR or NO XFR 11 Press Up or Down to select XFR Load Transfer or NO XFR No Load Transfer 12 Press SAVE 13 Press MORE repeatedly to BACK then S1 OK screen Set SET the Exerciser 14 Beginning from the S1 OK screen press MORE then SET 15 Press MORE repeatedly until EXER S2 RUN TIME screen 16 Press SEL 17 Enter ACCESS code located on white label on the back of the controller 18 Press SEL 19 Cursor is indicated as a line under character to be changed Change values with up and down keys 20 Press SAVE when complete 21 Press MORE repeatedly until SET USER SETUP then press BACK then ESC to the 51 OK screen How to Initiate CDT Exerciser and to start an exercise cycle every 1 7 14 or 28 days From SI screen 1 Press TEST 2 Pres MORE 3
27. einstall the switch cover and close and lock the cabinet door Reclose the circuit breakers feeding the utility and generator sources to the switch Initiate the electrical transfer test by activating the TS test switch P timer will time out and the micro controller will send an engine start signal When the W time has elapsed the switch will complete its transfer by closing into Source 2 Deactivating the test switch will start retransfer to Source 1 The switch will complete its retransfer to Source 1 after the time delay of the T timer The U engine overrun timer allows the engine generator to run unloaded for a preset cool down period NOTE A periodic test of the transfer switch under load conditions is recommended to insure proper operation See National Electric Code articles 700 and 701 A WARNING When performing a hi pot or dielectric test on the power section DISCONNECT the control panel plugs from the microprocessor to avoid potential damage m 30 Entelli Switch 250 Operation and Maintenance Manual 71R 2000 GE Zenith Controls m GE Zenith Controls Entelli Switch 250 Operation and Maintenance Manual 71R 2000 31m A Product of GE Industrial Systems General Electric Company 830 West 40 Street Chicago IL 60609 USA 773 299 6600 Fax 773 247 7805 www geindustrial com
28. elow Fail setting Under Frequency Restore Factory Default 95 This adjustment determines the minimum acceptable frequency required to transfer to Source 2 Adjust via the SET menu Range is 90 to 100 in 1 increments see page 18 Once satisfied the W timer will begin timing to transfer to Source 2 Under Frequency Fail Factory Default 90 This adjustment determines the low frequency threshold Adjust via the SET menu Range is 88 to 98 in 1 increments see page 18 Fail must be a minimum of 2 below Restore setting Once satisfied the W timer will begin timing to transfer to Source 2 Over Frequency Fail Factory Default 105 This adjustment determines the maximum acceptable Over Frequency Adjust via the SET menu Range is 103 to 105 in 1 increments see page 18 Once exceeded the T timer will be bypassed to expedite the transfer to Source 1 Over Frequency Restore Factory Default 102 This adjustment determines the minimum acceptable Over Frequency threshold at which the transfer switch is allowed to re transfer to Source 2 Adjust via the SET menu Range is 102 to 104 in 1 increments see page 18 Restore must be a minimum of 1 below Fail setting m GE Zenith Controls Entelli Switch 250 Operation and Maintenance Manual 71R 2000 9m Accessory Group Packages
29. en How to Bypass Cancel an exercise during an exercise cycle 1 Press BPASS 2 Allow the controller to complete the Engine cool down cycle If the CD Exerciser is configured or Set for a No Load Exercise Or allow the controller to complete retransfer to Source 1 If the CD Exerciser is configured for a Load Exerciser How to Bypass the next exercise event and Keep the rest of scheduled events unchanged 1 Press TEST 2 Pres MORE 3 Press BYPASS EXER To re institute the next exercise event back press CANCL BPASS How to check the next exercise event 1 From S1 OK screen press MORE three times 2 The unit will display the PLANT EXERCISER NEXT event in DAYS HOURS and MINUTES 3 Press ESC to S1 OK Screen Notes e In the S1 OK screen an E appears in the upper right hand corner of LCD screen when exercise is impending e For Load Exerciser actual exercise period ATS in S2 position CDT Exerciser timing period T 51 Stable Timer timing period Avalue greater than zero must be entered in the Exerciser duration field to be accepted as a valid exercise period e The Exercise cycle will be repeated on a regular basis as programmed and initiated in the SET menu depending on what Exerciser was configured selected in the CFG menu Load No Load CDP Exercise Indicator Exercise duration for this event in hours and minutes up to 10 hours per event To save value and to move cur
30. es This condition is primarily caused by an installation error Connections from Source 1 and Source 2 need be verified compared and corrected to remedy the inconsistent phase rotation between the sources WARNING Turning off this feature can cause severe damage to loads R26 Interruptable Power Rate Provisions Allow transfer out of Source 1 position to Source 2 or dead Source 2 Alarm and Pre Signal circuit included R50 In Phase Monitor this feature restricts Live to Live Source Transfers to occur unless both Sources are within 7 electrical degrees or less of each other live Source to live Source transfers usually occur during transfer back to Source 1 or during Testing R50 does not change the operation of the Automatic Transfer Switch in a power failure mode After all timer functions have elapsed the CHECKING FOR SOURCE SYNCHRO NISM will be displayed as well as the direction of transfer S1 S2 for example denotes transfer from Source 1 to Source2 When synchronism is accomplished transfer will take place 12 Entelli Switch 250 Operation and Maintenance Manual 71R 2000 GE Zenith Controls Accessory Definitions Notes If S2 Frequency is less than S1 Frequency display will show a series of symbols If S2 Frequency is greater than S1 Frequency display will show a series of symbols Each or symbol represents 10 electrical degrees out of phase A
31. gs transfers the load to Source 2 FAST TEST test presets timer values to a maximum 30 seconds during the test After completion of the test all timers are reset to their original values T3 W3 DT and DW remain NO test starts the generator but does not transfer the load to the Source 2 Press and hold the desired test option button until the switch transfers to Source 2 load test or until the generator has been run for the desired amount of time no load test Releasing the test button before W timer timeout will abort the test Exception when the transfer commit option is configured ON To test lamps press TEST then scroll through MORE then press LAMP TEST To cancel LAMP TEST press MORE Standard Transition When the test is initiated the controller initiates the Time Delay Source 2 Start Timer Engine Start Timer P cycle A manual CANCEL button is provided to cancel the test if desired Upon completion of the P time delay an Engine start Signal is sent to Source 2 When Source 2 voltage and frequency reach the preset Restore Values the time delay to Source 2 Timer W begins its timing cycle to ensure voltage and frequency stabilization before transfer A manual pushbutton BYPASS is provided to bypass the W time delay if desired After the W time delay the CCE relay energizes the CE solenoid to close the transfer switch in to Source 2 The SE limit switch activates to de energize the CCE rel
32. h 250 Operation Maintenance Manual 71R 2000 GE Zenith Controls Installation conta Per gt 1 Unlock the enclosure Initial Energization conta 3 Soper the enclosure After all options and accessories are checked and 3 Place the Disconnect Switch in the Inhibit verified follow these steps to set up the ATS Refer to i Entelli Switch 250 display Figure 4 The annunciation NOTE Hd is only Pon ur d the LEDs illuminate to indicate 1 source availability prion was purchased 2 ATS position and 3 Entelli Switch 250 control 4 Close the external up stream Source 1 function timing circuit breaker NOTES Source 1 Available and Source 1 Position LED s will illuminate If Source 1 Available LED does not illuminate verify that Source 1 Voltage is above the preset restore value The Gen Set will start and run while Source 2 stop Delay Timer is timing S1 OK 5 Close the External up stream Source 2 line 21 56 circuit breaker MON 23 APR 2002 6 Start the engine generator in MANUAL mode MORE TEST NOTE When the voltage and frequency reach preset values the Source 2 Available LED will illuminate 7 Verify the phase to phase voltages at Source 2 line terminals 8 Verify that the phase rotation of Source 2 is the same as the phase AN Entelli Switch 250 rotation of Source 1 9 Shut down the generator s engine B Place in Automatic Mode 4 Figure 4 LCD and keypad NOTE Source 2 Availabl
33. harmful line transients Two versions of the R T box exist depending on the type of ATS standard transition or delayed transition The following layout drawings of the R T Box compo nents standard and delayed transition include a bill of materials for replacement parts Schematics are included to indicate proper wiring O I Figure 13 08 07 010 09 05 40 3000 Amp All Other Standard Types Transformer Usage see Figure 13 R T Box Primary 1VA Assembly Voltage XFMR Part No at 50 60 Hz Part No 50P 1026 120V 50P 1027 208 220V 50P 1028 230 240V 50P 1029 277V 50P 1030 380 400V 50P 1031 416 440V 50P 1032 460 480V 50P 1033 575 600V Bill of Material Item Part No See Chart See Chart K 1260 Description Transformer 25 VA Transformer 1 VA Coil Control Relay 24V m 26 Entelli Switch 250 Operation and Maintenance Manual 71R 2000 GE Zenith Controls Relay Transformer R T Box 7 Delayed Closed Transition ME Figure 14 EIL nove Bon agan ooo nang 8 07 210 9 05 Transformer Usage Bill of Material R T Box Primary 1VA 25 VA Item Part No Description Assembly Voltage XFMR XFMR P
34. ide operator Open the Source 2 side contacts 5 Close the cabinet door 6 Energize Source 1 to supply the load until further repairs can be done ZBTSCT Transfer Bypass Switch a Auto Location Removal of closed transition transfer switch after Source 2 breaker shunt trip 1 Disconnect all power sources from bypass isolation transfer switch 2 Open the bottom cabinet door and turn the Disconnect Switch DS to the INHIBIT position 3 Remove the service access cover on the left hand side of the transfer switch 4 The manual operator and the manual handle will now be exposed Insert the handle into the Source 2 side manual operator Open the Source 2 side contacts 5 Close bottom cabinet door 6 Energize Source 1 power 7 Close the bypass contacts BN 8 Isolate the transfer switch 9 Remove the transfer switch from the bypass isolation transfer switch as indicated on the bypass instruction label to inspect and repair 10 Re install the transfer switch after maintenance with contacts closed to the same source as the bypass switch Reinstall the manual handle in its holder and the service access cover on the left side of the transfer switch 11 Re connect the transfer switch to AUTO b Auto Location Removal of the closed transition transfer switch if Source 1 and Source 2 contacts remain open 1 Close the bypass switch into the available source 2 Turn the DS to INHIBIT Remove the transfer sw
35. imum time that the two Sources would be parallel under these conditions is less than 500 milliseconds Before operating the Closed Transition Transfer Switch the condition must be corrected and the Shunt Trip reset Refer to procedure for servicing the Switch after Shunt Tripping occures The unit is Factory set to accomplish transfer within 5 electrical degrees Requires an Isochronous Governor with an operating frequency of 60 0 2 Hz Requires a Shunt Trip Breaker on the Generator set with a response time not exceeding 50 milliseconds m 22 Entelli Switch 250 Operation and Maintenance Manual 71R 2000 GE Zenith Controls Testing conta A DANGER A HAZARDOUS VOLTAGE Can Cause Severe Injury or Death Turn OFF all power before installation adjustment or removal of transfer switch or any of its components Emergency Service Procedure for Extended Parallel Time ZTSCT Transfer Switch If Source 2 breaker shunt trip was triggered after an extended parallel time malfunction occurred Follow these steps to open the transfer switch 1 Disconnect all power sources from the transfer switch by opening all line breakers Source 1 and Source 2 2 Open the cabinet door and turn the disconnect switch to the INHIBIT position 3 Remove the service access cover on the left hand side of the transfer switch 4 The manual operator and the manual handle will now be exposed Insert the handle into the Source 2 s
36. intenance of the switch A WARNING A Both power sources must be disconnected before manual operation of the switch Introduction A manual operator handle is provided with the transfer switch for maintenance purposes only Manual operation of the switch must be checked before it is operated electrically Both power sources must be disconnected before manual operation of the switch Insert the handle and operate the transfer switch between the Source 1 and Source 2 positions The transfer switch should operate smoothly without binding Return the switch to the Source 1 position remove the handle and return it to the holder provided After completing the inspection cleaning and servicing of the transfer switch reinstall the switch cover and close and lock the cabinet door Reclose the circuit breakers feeding the utility and generator sources to the switch Initiate the electrical transfer test by activating the test switch P timer will time out and the microcon troller will send an engine start signal When the W time has elapsed the switch will complete its transfer by closing into the Source 2 Deactivating the test switch will start retransfer to Source 1 The switch will complete its retransfer to Source 1 after the time delay of the T timer The U engine overrun timer allows the engine generator to run unloaded for a preset cool down period Test Options The ATS can be tested in either of two positions 1
37. itch service access cover Close the transfer switch into the same source as the bypass switch Incorrect sequencing is prevented by the interlocks while the transfer switch is in AUTO only 3 Remove the transfer switch from the bypass isolation transfer switch to inspect and repair c Test Location Removal of the closed transition transfer switch if both Source 1 and Source 2 contacts remain open 1 Close the bypass switch contacts BN as indicated on the bypass instruction label on the cabinet door 2 Disconnect all power sources from bypass isolation closed transition transfer switch 3 Open bottom cabinet door Turn the Disconnect Switch DS to the INHIBIT position 4 Remove the service access cover on the left side of the transfer switch 5 The manual operator and the manual handle will not be exposed Insert the handle into the Source 1 side and close the Source 1 contacts 6 Close the bottom cabinet door 7 Energize Source 1 power 8 Remove the automatic transfer switch from the bypass isolation transfer switch 9 Re install the transfer switch after maintenance with contacts closed to the same source as the bypass switch Reinstall the manual handle in its holder and the service access cover on the left side of the transfer switch 10 Re connect the transfer switch to AUTO As described in the Sequence of Operation section located in the ZTSCT ZBTSCT Series Manual 71R 5000 W GE Zenith Cont
38. l selector Door mount Keyed or non keyed operation available SWS3 Source Priority Selector Switch Door mount Allows selection of Source 1 or Source 2 to be the Prime Source Transfer Switch will transfer to selected Prime Source if that Source is available Keyed or non keyed operation available T Time Delay S1 Source 1 Stable Timer To delay trans fer to Source 1 immediate retransfer on Source 2 fail ure Adjustable 0 60 minutes in 1 second increments Standard setting is 30 minutes Adjust via SET menu see page 18 T3 W3 Elevator Pre Signal Auxiliary Contacts Open 0 60 seconds prior to transfer to either direction re closes after transfer U S2 Source 2 Stop Delay Timer Allows Engine to run unloaded after switch retransfer to Source 1 Adjustable 0 60 minutes in 1 second increments Standard setting is 5 minutes Adjust via SET menu see page 18 UMD Universal Motor Load Disconnect Circuit Auxiliary Contact opens 0 60 seconds prior to transfer in either direction re closes after transfer Can be configured by end user for Pre transfer Post transfer or both m GE Zenith Controls Entelli Switch 250 Operation and Maintenance Manual 71R 2000 13 m Accessory Definitions conta VI Voltage Imbalance Three Phase For a three phase source this feature monitors phase voltage ratios based on a selected range within a selected time window Should any phase fall below the selected lower wi
39. late Source 1 Line failure causing the Generator to start and transfer the load to Source 2 Should Emergency fail during this operation Transfer Switch will retransfer back to Source 1 Q3 Remote inhibit transfer to Source 2 circuit Energize input to allow transfer to Source 2 To enable Q3 option engage Q3 jumper Q7 Inhibit transfer to Source 1 circuit Energize Q7 input to prevent transfer to Source 1 R1 1 R1 3 Source 1 Over Voltage sensing for single and three phase systems Source 1 Over Voltage Fail Factory Default 11096 This adjustment determines the maximum acceptable over voltage Adjust via the SET menu Range is 105 to 110 in 1 increments see page 18 Once exceeded the P timer begins timing to signal the Generator to start Source 1 Over Voltage Restore Factory Default 105 This adjustment determines the minimum acceptable over Voltage threshold at which the Transfer Switch is allowed to automatically transfer to Source 1 Adjust via SET menu Range is 103 to 108 in 1 increments Restore must be a minimum of 2 below Fail setting see page 18 R15 R15D Load Shed Should Source 2 become overloaded a signal can be given to switch to the dead or Mid position R16 Phase Rotation Sensing Can be turned on or off via CFG menu see page 17 Factory Default is on This feature prevents Line Source to Line Source trans fers from occurring between dissimilar phase sequenc
40. low Source 2 Engine to run unloaded A manual pushbut ton BYPASS is provided to bypass the U time delay if desired Upon completion of the U timing cycle the controller sends an Engine stop signal Delayed Transition Source 1 Power Failure When Source 1 voltage or frequency has fallen below the preset Fail values the controller initiates the Time Delay Source 2 Start Engine Start Timer P cycle Upon completion of the P time delay an Engine start Signal is sent to Source 2 When Source 2 voltage and frequency reach the preset Restore values the time delay to open Source 1 timer W begins its timing cycle to ensure voltage and frequency stabiliza tion before re transfer A manual pushbutton BYPASS is provided to bypass the W time delay if desired After the W time delay the CCNO relay energizes the CNO solenoid to open the transfer switch out of Source 1 position The time delay to Source 2 timer DW begins its timing cycle After the DW time delay the CCE relay energizes The switch then completes transfer to Source 2 by energizing the CE solenoid The SE limit switch activates to de energize the CCE relay Restoration of Source 1 Power When Source 1 power reach the preset Restore values the controller initiates re transfer to Source 1 sequence The delay to open Source 2 Timer T begins its timing cycle to ensure voltage and frequency stabi lization before retransfer A manual pushbutton BYPASS is provi
41. maximum of 18 symbols 180 electrical degrees can be monitored The number of or symbols decrease as the two sources approach synchronism and increase as the two sources drift out of synchronism If 51 and S2 Frequencies are identical the display will show a series of alternating symbols which also indicate the approximate out of phase degrees In the event that the Sources do not come within 7 electrical degrees of each other within 60 seconds the unit will display the message SYNCH CHECKING and will allow the user to BYPASS If the BYPASS button is pressed the unit will display the message WARNING MAY CAUSE DAMAGE TO THE LOAD Pressing XFR will actually bypass the R50 Since R50 is a passive device the length of time it takes to reach Synchronism is de pendent on the frequency difference between the two Sources Source 1 is usually a Utility and the frequency is not within the control of the consumer Source 2 needs to be adjusted to create an adequate difference in order for the transfer to happen a timely fashion Note For optimum performance Source 2 Generator should be adjusted a Maximum of 2 Hertz above or below the Utility frequency minimum of 0 1 Hertz 58 to 59 9 or 60 1 to 62 Hertz Adjustment of Generator to 60Hertz could cause lengthy transfer delay R50 Feature can be turned ON or OFF via CFG Menu see page 17 Factory Default if OFF S5P Auto Semi Manual selector In Auto posi
42. ndow limit or exceed the selected higher window limit within the selected time frame the controller initiates transfer to the other source Range 5 to 20 of Nominal voltage 10 to 30 seconds window user adjustable Resolution 1 Increments Minimum Differential 2 between Fail and Restore settings Factory default 10 Fail 8 Restore 30 Seconds See CFG Menu page 17 to configure ON or OFF See SET Menu page 18 to set Percentage and time windows Time Delay S2 Source 2 Stable Timer To delay trans fer to Source 2 Adjustable 0 5 minutes in 1 second increments Standard setting is 1 second Adjust via SET menu see page 18 YEN Bypass Timers Key utilizing Keypad When applicable the system prompts the user to press a button to bypass T or W Timers should the user so desires ZNET Network Communications Interface Card How to Set the System Clock How to Set the System Clock Set System Clock time and date If the clock is not set the display will show SET SYSTEM CLOCK on the second line of the 51 OK screen The S1 OK screen will show time hours and minutes on the second line if the system clock has been set Date on third line Setting the System Clock Start from S1 OK screen 1 Remove battery protective white plastic strip near P relay 2 Press MORE then press SET 3 Press MORE and scroll to SET SYSTEM CLOCK using the MORE key 4 Press SEL 5 ENTER A
43. ng cycle not complete Check DTTimer setting ATS Open Time Remaining Table 4 m GE Zenith Controls Entelli Switch 250 Operation and Maintenance Manual 71R 2000 29 m Maintenance and Testing A CAUTION Due to hazardous voltage and current GE Zenith rec ommends that a GE Zenith Certified technician or a qualified electrician must perform the installation and maintenance of the switch A WARNING A Both power sources must be disconnected before manual operation of the switch A preventive maintenance program will insure high reliability and long life for the transfer switch The preventive maintenance program for the transfer switch should include the following items Inspection and Cleaning The switch should be inspected for any accumulation of dust dirt or moisture and should be cleaned by vacuuming or wiping with a dry cloth or soft brush do not use a blower since debris may become lodged in the electrical and mechanical components and cause damage Remove the transfer switch barriers and check the condition of the contacts Any surface deposits must be removed with a clean cloth do not use emery cloth or a file If the contacts are pitted or worn excessively they should be replaced A general inspection of mechanical integrity should be made to include loose broken or badly worn parts Servicing All worn or inoperative parts must be replaced using GE Zenith recommended replacement parts Plea
44. nt Tripping occures The unit is Factory set to accomplish transfer within 5 electrical degrees Requires an Isochronous Governor with an operating frequency of 60 0 2 Hz Requires a Shunt Trip Breaker on the Generator set with a response time not exceeding 50 milliseconds W GE Zenith Controls Entelli Switch 250 Operation and Maintenance Manual 71R 2000 25m Relay Transformer R T Box Standard Transition Each MX250 microprocessor based ATS controller requires a relay transformer box to apply line voltage to the ATS operator via coil control relays Also required is power for the MX150 printed circuit board and an appli cation of sensing voltage proportional to line voltage This is accomplished by the relay transformer box This method of switching operator voltage and applying power and sensing voltage to the printed circuit board isolates SES 2 inside 3 Figure 12 40 225 Amp Molded Power Section Transformer Usage see Figure 12 R T Box Primary 1VA 25 VA Assembly Voltage XFMR XFMR Part No at 50 60 Hz Part No Part No 57P 1015 120V 57P 1016 208 220V 57P 1017 230 240V 57P 1018 277V 57P 1019 380 400V 57P 1020 416 440V 57P 1021 460 480V 57P 1022 575 600V Bill of Material Description Transformer 1 VA Transformer 25 VA See Chart See Chart K 1274 Relay Flange Mounted the MX250 from the line voltage further protecting the controller from
45. ntact Rating 10A 277VAC or 30VDC Q 12V Output Source AUTO MANUAL S5 or 12 4 Nour er T ON OFF pg 13 2 H pd d R blacement K4100 BR2032 13 Life 10 Years 7 During normal jon IN PHASE MONITOR R50 ON OFF pg 13 O 9 NIN User Access Code Default 121212 O 10 vein duct Information 51 OVER VOLTAGE 1 1 or R1 3 z 24 Hour Service 773 299 6600 ON OFF pg 12 5 13 siam O ssiN S1 UNDER FREQUENCY ON OFF pg 9 S2 OVER VOLTAGE ON OFF pg 9 Figure 10 S2 OVER FREQUENCY ON OFF pg 9 PHASE IMBALANCE VI ON OFF pg 14 X PHASE ROTATION MATCH R16 ON OFF pg 12 LOAD DISCONNECT TD UMD pg 13 TRANSFER ALARM ON OFF pg 11 NETWORK ZNET ON OFF pg 14 X Optional Accessories m GE Zenith Controls Entelli Switch 250 Operation and Maintenance Manual 71R 2000 17m Entelli Switch 250 User Setup SET Menu S1 OK 01 50 FRI 31 MAY 2003 MORE TEST aiva 2VAB ___ VBC __ ___ USER SET SYSTEM CLOCK pg 14 DAYLIGHT SAVINGS ON OFF CLOCK EXERCISER CDP pg 11 amp 16 EXER S2 RUNTIME CDT pg 11 amp 15 51 UNDER VOLTAGE pg 9 Fail Restore UNDER FREQUENCY pg 9 Fail Restore OVER VOLTAGE pg 12 Fail Restore OVER FREQUENCY pg 9 Fail Restore 2 UNDER VOLTAG
46. ommunications M 4 FREQUENCY INDICATION FOR S1 amp S2 Option vu E B B K P pg 11 2 p HB n PROG 1 3 NO NC O PROG2 To J2 J4 Input PLANT EXERCISER ero Input sink Next Impending Exerciser E ad 2 quate ge shows only if set te ELEV PRE OUT Jm LL ALARM OUT 5 lo E O 18 steour ule SYSTEM INFO 5 dl m m 16 R2 T6 J43 Serial Unit Serial woronpisc our Rev Software Revision E Event Log Sequentially Numbered Log 5 muB s 5 of 16 events that track F BH a HH date time reason and action taken 16 B Z Data Total Life Transfers N2P Days Powered Up seje to factory configuration ee egs Total Transfers to S2 J4 SER PE Total S1 Failures oL o Time S1 available in Hrs O 5 Contact Rating 10A 277VAC or 30VDC Time S2 available in Hrs N1P p 120 Output Source o 5 Lithium Battery Exerciser Battery le Replacement K 4100 BR2032 CHANGE USER ACCESS CODE e 7 ae adaa TO Years c ls User Access Code Q 110 vein duct Information W 12 O2 TSLIN 24 Hour Service 773 299 6600 Q 33 s121N O 114 ssn Figure 10 m GE Zenith Controls Entelli Switch 250 Operation and Maintenance Manual 71R 2000 19 m Testing Due to hazardous voltage and current GE Zenith recommends that a GE Zenith Certified technician or a qualified electrician must perform the installation and ma
47. or Ke ees 27 CDT One Event Timer Exerciser 15 Schematics ee eee 28 CDP Clock Exerciser 16 Troubleshooting amp Diagnostics 29 User Setup CFG Menu 17 Maintenance and Testing 30 User Setup SET 18 Inspection and Cleaning 30 User Setup System Info 19 SEPINE ve eG es 30 eee Dee he WEE CORR RUNS 30 introduction GE Zenith Transfer Switches are used to provide a continuous source of power for lighting and other critical loads by automatically transferring from source 1 power to source 2 power in the event that source 1 voltage falls below preset limits Voltage sensing and system control is performed via a state of the art microcontroller located on the cabinet door It is designed to give highly accurate control of the transfer switch system All GE Zenith transfer switches are designed for use on emergency or standby systems and are rated for total system or motor loads Transfer switches are UL Listed under Standard 1008 and CSA Certified under Standard C22 2 No 178 and IEC Listed under Standard 947 NOTES A protective device such as a molded case circuit breaker or fused disconnect switch MUST be installed on both sources of incoming power for circuit protection and as a disconnection device All references made within this manual about the term S1 or Source 1
48. r the W time delay the CCNO relay energizes the CNO solenoid to open the transfer switch out of Source 1 position The time delay to Source 2 timer DW begins its timing cycle After the DW time delay the CCE relay energizes The switch then completes transfer to Source 2 by energizing the CE solenoid The SE limit switch activates to de energize the CCE relay Restoration of Source 1 Power Deactivating the test switch initiates re transfer to Source lsequence The delay to open Source 2 Timer T begins its tim ing cycle to ensure voltage and frequency stabilization before retransfer A manual pushbutton BYPASS is provided to bypass the time delay if desired After the T time delay the CCEO relay energizes the CEO solenoid to open the switch out of Source 2 position The time delay to Source 1 timer DT begins its timing cycle After the DT time delay the CCN relay energizes the CN solenoid to complete re transfer of the switch to Source 1 The SN limit switch activates to de energize the CCN relay Immediately after re transfer the 52 Stop Delay Timer Delay to Engine Stop U begins its cycle to allow Source 2 Engine to run unloaded A manual pushbutton BYPASS is provided to bypass the U time delay if desired Upon completion of the U timing cycle the controller sends an Engine stop signal m GE Zenith Controls Entelli Switch 250 Operation and Maintenance Manual 71R 2000 21 m Testing conta A NOTICEA
49. rcel the SN limit switch becomes activated to de energize the CCN relay and energize the CCEO relay which opens the ATS out of Source 2 The SEO limit switch activates to de ener gize the CCEO relay The ATS has now closed back into Source 1 position without interrupting the load The ATS defaults to an open transition transfer when Source 1 fails Closed transition transfer is not possible with only one source available If the optional Transition Mode Selector TMS is available one can select an Open Transition Transfer or a Closed Transition Transfer when both Sources are available If while in Closed Transition Mode the ATS fails to open the source it is attempting to transfer out of within 100 milliseconds an Alarm will sound and the source that the ATS just closed into will be opened leaving the ATS in its initial source while disabling all other transfer operations until the problem is corrected and the Fail to Open Lockout Reset has been pressed A signal will be provided STE to Shunt Trip the Generator Circuit Breaker if the Transfer Switch remains closed into both Sources for more than 325 milliseconds The load will then be fed by the Source 1 The maximum time that the two Sources would be parallel under these conditions is less than 500 milliseconds Before operating the Closed Transition Transfer Switch the condition must be corrected and the Shunt Trip reset Refer to procedure for servicing the Switch after Shu
50. rols Entelli Switch 250 Operation and Maintenance Manual 71R 2000 23m Sequence of Operation Standard Transition Source 1 Power Failure When Source 1 voltage or frequency has fallen below the preset Fail values the controller initiates the Time Delay Source 2 Start Timer Engine Start Timer P cycle Upon completion of the P time delay an Engine start Signal is sent to Source 2 When Source 2 voltage and frequency reach the preset Restore Values the time delay to Source 2 Timer W begins its timing cycle to ensure voltage and frequency stabilization before transfer A manual pushbutton BYPASS is provid ed to bypass the W time delay if desired After the W time delay the CCE relay energizes the CE solenoid to close the transfer switch in to Source 2 The SE limit switch activates to de energize the CCE relay Restoration of Source 1 Power When Source 1 power reach the preset Restore values the controller initiates re transfer to Source lsequence The delay to Source 1 Timer T begins its timing cycle to ensure voltage and frequency stabiliza tion before retransfer A manual pushbutton BYPASS is provided to bypass the T time delay if desired After the T time delay the CCN relay energizes the CN solenoid to retransfer the switch to Source 1 The SN limit switch activates to de energize the CCN relay Immediately after re transfer the S2 Stop Delay Timer Delay to Engine Stop U begins its cycle to al
51. se refer to the Replacement Parts manual for specific part information and ordering procedures Please contact the GE Zenith Technical Services Department for the Replacement Parts manual The operating mechanism of the transfer switch is lubricated with Lubriplate 105 The lubricant applied at the factory provides adequate lubrication for the lifetime of the switch Should debris contaminate the mechanism clean and apply additional Lubriplate GE Zenith can provide complete preventative main tenance services Please contact the GE Zenith Technical Services Department for additional information CDT battery replacement lithium batteries may last up to 10 years however it is recommended that battery replacement be included in a 3 5 year service cycle The battery maintains the exerceser memory only and does not otherwise affect the operation Testing A manual operator handle is provided with the transfer switch for maintenance purposes only Manual operation of the switch must be checked before it is operated electrically Both power sources must be disconnected before manual operation of the switch Insert the handle and operate the transfer switch between the Source 1 and Source 2 positions The transfer switch should operate smoothly without binding Return the switch to Source 1 position remove the handle and return it to the holder provided After completing the inspection cleaning and servicing of the transfer switch r
52. sor to next EL field to be changed Figure 9 16 Entelli Switch 250 Operation and Maintenance Manual 71R 2000 GE Zenith Controls Entelli Switch 250 User Setup CFG Menu 1 OK Turn options ON or OFF via 01 50 ELE keypad through the CFG menu MORE TEST Enter six digit access code The factory assigned six digit access code 1 VAB 2VAB ___ is located on the back ofthe controller VBC _ VBC ___ ___ ___ he cpio a ee Controller inputs must be relay isolated CONFIG 4 Canin dications E USER SETUP B um J2 2 1 2 meli OIN O GRD Input Sink T gt a eal e a OS d 40 B ELEV PRE OUT bandi TIMER EXERCISER CDT 1 7 14 28 Day pg 11 amp 15 oF amaca O pe MOTOR DISC OUT CLOCK EXERCISER 12 LOAD OR NO LOAD Ae neni n 1 7 14 28 365 Day 11 amp 16 ht INHIB gt 52 mon m 6 15 isin Output Output zm x TEST KEY 6 or s 2 Maintained Momentary pg 11 ally 8 subject to factory configuration R2 13 vm amp i TRANSFER COMMIT 13 w ni 4 ON OFF pg 13 E 2 Co
53. ted properly Corrective Action Check engine start connections Generator is in OFF position U timing cycle not complete Investigate why Engine Control Switch was turned off Check U timer setting ZTG Series ATS will not transfer to SOURCE 1 SOURCE 1 POSITION and SOURCE 1 and SOURCE 2 AVAILABLE LEDs on but U timer has timed out SOURCE 2 AVAILABLE LED off Engine start wires not terminated correctly Check Engine Start Connections Generator in MANUAL SOURCE 2 voltage or frequency not within acceptable parameters Place generator in AUTO Check Engine Start Connections Generator Breaker Generator Output and Engine Control Switch None Power supply connector unplugged Plug in connector ZTGD Series LCD Display S1____ TD XFR S1 gt S2 Time Remaining LCD Display ATS Open Time Remaining ____ W timing cycle not complete DW timing cycle not complete Check W Timer setting Check DWTimer setting SOURCE 1 AVAILABLE LED off SOURCE 1 voltage or frequency not within acceptable parameters Check utility and utility breakers None Power supply connector unplugged Plug in connector LCD Display Limit switch or RT box Call Technical Services Diagnostic Code 001 connector unplugged LCD Display T timing cycle not complete Check TTimer setting S1 OK Time Remaining ____ Bypass LCD Display TD timi
54. tion retransfer to Source 1 is automatic after the T timer has timed out The T time delay is bypassed if Source 2 fails In Manual retransfer to Source 1 is upon depression of BYPASS DELAY button YEN or if Source 2 fails S12P Auto Manual Selector In Auto position the Automatic Transfer Switch functions automatically as specified with the Switch drawings In Manual the Automatic Transfer Switch will transfer to either direction upon depression of Source 1 or Source 2 transfer buttons Should Source 1 fail the Generator Source 2 will automatically start Once transferred in Manual the Switch maintains position selected even if selected power fails S13P Transfer Commit Configured via CFG menu see page 17 When this Feature is set to OFF The transfer Switch is not committed to transfer unless the outage duration is longer than the timers that precede the transfer to Source 2 position This assumes that the outage will be an isolated event When this Feature is set to ON The transfer Switch is committed to transfer to Source 2 position once the W timer has begun timing even if Source 1 power returns before the transfer to Source 2 This is to ensure that the transfer takes place because one outage may be followed by another 14 Test Auto Source 1 Selector Door mount SW1 Auto Off Start Engine control selector Door mount Keyed or non keyed operation available SW2 Auto Off Engine contro
55. urce 1 Adjust via the SET menu Range is 85 to 100 in 1 increments see page 18 Once satisfied the T timer will begin timing to transfer to Source 1 Under Voltage Fail Factory Default 80 This adjustment determines the low voltage threshold Adjust via the SET menu Range is 75 to 98 in 1 increments see page 18 Fail must be a minimum of 2 below Restore setting Once voltage falls below threshold P timer begins timing to signal Source 2 Generator to start Under Frequency Restore Factory Default 95 This adjustment determines the minimum acceptable frequency required to transfer to Source 1 Adjust via the SET menu Range is 90 to 100 in 1 increments see page 18 Once satisfied the T timer will begin timing to transfer to Source 1 Under Frequency Fail Factory Default 9096 This adjustment determines the low frequency threshold Adjust via the SET menu Range is 88 to 98 in 1 increments see page 18 Fail must be a minimum of 2 96 below Restore setting Once satisfied the T timer will begin timing to transfer to Source 1 Over Frequency Restore Factory Default 10296 This adjustment determines the minimum acceptable Over Frequency threshold at which the transfer switch is allowed to re transfer to Source 1 Adjust via the SET menu Range is 102 to 104 in 1 increments see page 18 Restore must be a minimum of 1 below Fail setting Over Frequency Fail
56. w to initiate a new exercise start time 1 Press TEST 2 Pres MORE 3 Press EXER CANCL 4 Press START TIMER TEST How to check the next exercise event 1 From S1 OK screen press MORE three times 2 The unit will display the PLANT EXERCISER NEXT event in DAYS HOURS and MINUTES 3 Press ESC to S1 OK Screen Notes E appears in the upper right hand corner of LCD screen when exercise is impending For Load Exerciser actual exercise period ATS in S2 position CDT Exerciser timing period T 51 stable Timer timing period m GE Zenith Controls Entelli Switch 250 Operation and Maintenance Manual 71R 2000 15m CDP Clock Exerciser Load No Load Clock Exerciser Allows the Generator to start and run unloaded or to simulate a power failure start Generator and run under load Can be configured by the end user for 1 7 14 28 or 365 day cycles total of 7 independent No Load exercise periods up to 10 hours each can be programmed for each of the daily weekly 14 day and 28 day exercisers A total of 12 independent No Load exercise periods up to 10 hours can be programmed for the 365 day Exerciser How to Configure CFG the Exerciser 1 Beginning from the 1 OK screen press MORE then CFG 2 Press MORE to scroll to CONFIG CLOCK EXERCISER screen 3 The third line of the CONFG CLOCK EXERCISER will show either DAILY WEEKLY 14 DAY 28 DAY 365 DAY or OFF 4 If the third line of the
57. x relay transformer box contains the following see figure 6 Figure 6 A Relays which are required for controller output to energize the transferring mechanism of the transfer switch at line voltage B Transformers which drop line voltage to control level for controller input 51 OK 21 56 MON 23 APR 2002 MORE TEST Entelli Switch 250 Figure 7 m GE Zenith Controls Entelli Switch 250 Operation and Maintenance Manual 71R 2000 7mm Entelli Switch 250 Controller con LCD amp Keypad These options are accessible through the LCD and keypad see figure below To become familiar with the options loaded into a particular unit scrolling through the SET and CFG menu will show the descriptions of the options see pages 17 18 These menus are the very same menus that are used to access the setting and or configuration of these options The SET setting menu is primarily used to show or change time and voltage settings The CFG menu is primarily used to turn an option on or off When scrolling through these menus no changes can be made without entry of the access code The factory set six digit access code is located on a white label on the back of the unit see figure 10 pgs 17 19 The Entelli Switch 250 has many logic options Each controller is downloaded with options at the time of manufacture The collection of options that any one controller has is specified at the time of order placement The following p
58. xternal control circuits as required m GE Zenith Controls Entelli Switch 250 Operation and Maintenance Manual 71R 2000 3m Installation cong A DANGER A HAZARDOUS VOLTAGE Can Cause Severe Injury or Death Turn OFF all power before installation adjustment or removal of transfer switch or any of its components P Relay Engine Start Contact rating is 10 Ampere at 120VAC or 28VDC Gold plated Figure 1 Engine Start Control Connections The engine start terminals are clearly identified by a label on the microcontroller backplate In the case of manual transfer switches or in other applications not requiring the microprocessor clearly marked terminal blocks are provided in the upper left corner of the con trol panel for the engine start control wires Figure 2 shows location of engine start connections for Bypass Isolation Transfer Switch Figure 5 pg 6 shows location of engine start connections for Automatic Transfer Switch Terminals for field connections to the A3 Source 2 auxiliary contacts and the A4 Source 1 auxiliary contacts are also provided These terminals are clearly marked and appear on the side of the power panel On 400 amp metal frame units these terminals appear on the bracket above the operator handle Bypass Selector Switch BYPASS Manual SWITCH BP A4 1 A4 1 d ontrol E TRANSFER Module SWITCH m ATS
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