e GE Zenith Controls Entelli-Switch 250 Microprocessor Controller Transfer Switch Control Panel 71R-2000 5/03 Operation and Maintenance Manual
Authorized Service For GE parts and service, call: (773) 299-6600 Table of Contents Page Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Equipment Inspection and Storage . . . . . . . .13 Final Equipment Inspection . . . . . . . . . . . . . .13 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Engine Start Control Connections . . . . . . . . .14 Initial Energization . . . . .
Safety / Installation DANGER 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 maintenance will help increase the life of the switch.
Installation (cont’d) DANGER 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. E 4 1 5 P Relay 2 (Engine Start) 6 3 Initial Energization Before proceeding, refer to the information package supplied with the ATS and read and understand the information on all accessories provided. Contact rating is 10 Ampere at 120VAC or 28VDC Gold plated Figure 1 1. 2. 3. Unlock the enclosure.
Installation (cont’d) Initial Energization (cont’d) After all options and accessories are checked and verified, follow these steps to set up the ATS. Refer to Entelli-Switch 250 display Figure 4. The annunciation LEDs illuminate to indicate (1) source availability, (2) ATS position, and (3) Entelli-Switch 250 control function (timing). 1. 2. 3. Unlock the enclosure. Open the enclosure. Place the Disconnect Switch in the Inhibit. NOTE: 4. This step is only performed if the “DS” Option was purchased.
Installation (cont’d) DANGER 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.
Entelli-Switch 250 Controller Entelli-Switch 250 Controller Consists of two major assemblies: Engine Start Relay P I. The Microprocessor contains the following: A. B. II. I/O Interface Entelli-Switch 250 Board 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) 1. I/O accessories that can be found here are: a. Engine start relay P output b. Pre-Signal to transfer T3, W3 and UMD output (optional) c.
Entelli-Switch 250 Controller (cont’d) LCD & Keypad 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). 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).
User Setting for Voltage & 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 Source 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.
Accessory Group Packages Table 2 Accessories STDS EXES Group Packages CONS SENS SPES PSGS 6P A1 A1E A3 2 2 2 2 3 A4 2 2 2 2 3 2 2 2 2 2 2 2 2 2 2 2 2 Calibrate CDT CDP **DS *DT *DW E EL/P K/P L1 L2 L3 L4 *LN P1 Q2 Q3 Q7 R1-1 R1-3 R15 *R15D R16 R50 S5P S12P S13P T T3/W3 U UMD VI W YEN 2 2 3 ■ 10 Standard Accessory included in the group package. Optional Accessory not included but can be added to group package. Optional Accessory.
Accessory Definitions 6P CDT Test Switch, Momentary 6A Test Switch, Maintained Auto/Momentary Test 6AP Test Switch, Maintained/Momentary utilizing keypad 6B 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.
Accessory Definitions (cont’d) Q7 M1 Single Phase Amp Meter M2 Three Phase Amp Meter M80 3000 Digital Power Monitor M82 5200 Digital Power Meter M83A EPM 5300 Digital Power Meter with Modbus Port M83B EPM 5350 Digital Power Meter with Ethernet Port M84 7430 Digital Power Meter , Wye or Delta M85A EPM 9450 Digital Power Meter, Ethernet M85B EPM 9450 Digital Power Meter with Internal 56K Mod. M86A EPM 9650 Digital Power Meter, Wye or Delta, RS232 or RS485 Inhibit transfer to Source 1 circuit.
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 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.
Accessory Definitions 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 window 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.
CDT One Event Timer 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 the S1 OK screen, press MORE then CFG. 2. Press MORE to scroll to CONFIG TIMER EXERCISER screen. 3.
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. • A 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.
Entelli-Switch 250 User Setup - CFG Menu S1 OK 01: 50 FRI 31 MAY 20 03 MORE TEST 1 VAB = ___ 2 VAB = ___ VBC = ___ VBC = ___ VCA = ___ VCA = ___ MORE CFG SET ESC Turn options ON or OFF via keypad through the CFG menu Enter six digit access code (The factory assigned six-digit access code is located on the back of the controller) WARNING 1 Controller inputs must be relay isolated. —TRANSFER COMMIT (S13) ON/OFF (pg. 13) —AUTO / MANUAL (S5 or S12) ON/OFF (pg. 13) —IN-PHASE MONITOR (R50) ON/OFF (pg.
Entelli-Switch 250 User Setup - SET Menu Change adjustable values through the SET menu. S1 OK 01 : 5 0 F RI 3 1 M AY 2 0 0 3 MOR E T E ST Enter six digit access code (The factory assigned six-digit access code is located on the back of the controller) 1 VA B = ___ 2 VAB = _ _ _ V B C = ___ VB C = _ _ _ VC A = ___ VC A = _ _ _ MORE CF G SE T ESC WARNING 1 Controller inputs must be relay isolated. —CLOCK EXERCISER (CDP) (pg.11 & 16) N.O. N.C.
Entelli-Switch 250 User Setup - System Info View System Data S1 OK 01 : 5 0 F R I 31 MAY 20 03 MO R E T E ST Enter six digit access code (The factory assigned six-digit access code is located on the back of the controller) WARNING —PHASE TO PHASE VOLTAGE, S1 & S2 1 Controller inputs must be relay isolated. 2 5 1 N.O. N.C. To J2/J4 Input PROG 2 GRD (Input Sink) LS OUT 2 Controller ouputs have limited source capability. Use only GE Zenith - specified output modules. NIA OUT ELEV. PRE.
Testing CAUTION Due to hazardous voltage and current, GE Zenith recommends that a GE Zenith Certified technician or a qualified electrician must perform the installation and maintenance of the switch. WARNING 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.
Testing (cont’d) NOTICE 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.
Testing (cont’d) NOTICE 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.
Testing (cont’d) DANGER 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.
Sequence of Operation Standard Transition Delayed Transition Source 1 Power Failure: 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.
Sequence of Operation (cont’d) 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.
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 application of sensing voltage proportional to line voltage. This is accomplished by the relay transformer box.
Relay/Transformer (R/T Box) (cont’d) Delayed / Closed Transition PRI. SEC. 1 2 3 Figure 14 Transformer Usage Bill of Material R/T Box Assembly Part No. Primary Voltage at 50/60 Hz 1 VA XFMR Part No. 25 VA XFMR Part No. Item Part No.
Relay/Transformer (R/T Box) (cont’d) Standard Transition R/T Box Schematic 20 21 30 22 10V 10V 11V 24V CCN XN1 - SOURCE 1 CONTROL TRANSFORMER XN2 - SOURCE 1 3 PHASE SENSING TRANSFORMER XE1 - SOURCE 2 CONTROL TRANSFORMER XE2 - SOURCE 2 3 PHASE SENSING TRANSFORMER XE2 XE1 XN2 XN1 24V 32 31 10V 11V 10V 900 (18) SOURCE 2 24V OUTPUT SOURCE 1 24V OUTPUT 800 907 3 PHASE SOURCE 2 SENSING (BLANK) (BLANK) GROUND GND CCE - COIL CONTROL RELAY (SOURCE 2) 901 CCN - COIL CONTROL RELAY (SOURCE 1) 801 C
Troubleshooting and Diagnostics DANGER 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.
Maintenance and Testing CAUTION Due to hazardous voltage and current, GE Zenith recommends that a GE Zenith Certified technician or a qualified electrician must perform the installation and maintenance of the switch. WARNING 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.
■ GE Zenith Controls Entelli-Switch 250 Operation and Maintenance Manual (71R-2000) 31 ■
g GE Zenith Controls A Product of GE Industrial Systems General Electric Company 830 West 40 th Street, Chicago, IL 60609 USA 773 299-6600, Fax: 773 247-7805 www.geindustrial.
