GE 239 Instruction Manual
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GE 239 Instruction Manual

GE 239 Instruction Manual

Multilin motor protection relay
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239
Motor Protection Relay
CAUSE OF LAST TRIP:
MECHANICAL JAM
TRIP
ALARM
ACTUAL
SETPOINT
STORE
RESET
GE Multilin
215 Anderson Avenue, Markham, Ontario
Canada L6E 1B3
Tel: (905) 294-6222 Fax: (905) 201-2098
Internet: http://www.GEindustrial.com/multilin
Courtesy of NationalSwitchgear.com
MOTOR PROTECTION RELAY
AUXILIARY
PICKUP
SERVICE
COMMUNICATE
MESSAGE
VALUE
GE Power Management
239
Instruction Manual
Firmware Revision: 2.6x
239PC Software: 2.6x or newer
Manual P/N: 1601-0060-D9
Copyright © 2002 GE Multilin
C
US
Manufactured under an
ISO9002 Registered system.
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  • Page 1 GE Power Management MOTOR PROTECTION RELAY Instruction Manual Firmware Revision: 2.6x 239PC Software: 2.6x or newer Manual P/N: 1601-0060-D9 Motor Protection Relay Copyright © 2002 GE Multilin CAUSE OF LAST TRIP: MECHANICAL JAM TRIP AUXILIARY PICKUP ALARM SERVICE COMMUNICATE ACTUAL...
  • Page 2 Courtesy of NationalSwitchgear.com...
  • Page 3 These instructions do not purport to cover all details or variations in equipment nor provide for every possible contingency to be met in connection with instal- lation, operation, or maintenance. Should further information be desired or should particular problems arise which are not covered sufficiently for the pur- chaser’s purpose, the matter should be referred to the General Electric Company.
  • Page 4 Courtesy of NationalSwitchgear.com...

  • Page 5: Table Of Contents

    TABLE OF CONTENTS 1. OVERVIEW 239 RELAY FEATURES ............ 1-1 TYPICAL APPLICATIONS..........1-5 ORDER CODE ..............1-6 SPECIFICATIONS ............. 1-7 2. INSTALLATION MOUNTING ............... 2-1 PRODUCT IDENTIFICATION ........... 2-2 EXTERNAL CONNECTIONS ..........2-3 DIELECTRIC STRENGTH TESTING ......2-13 3. OPERATION FRONT PANEL..............
  • Page 6 ELECTRICAL INTERFACE..........7-1 DATA FRAME FORMAT / DATA RATE......7-1 DATA PACKET FORMAT ..........7-2 ERROR CHECKING ............7-2 TIMING................7-4 239 SUPPORTED MODBUS FUNCTIONS .......7-4 03/04: READ SETPOINTS / ACTUAL VALUES....7-4 05: EXECUTE OPERATION ..........7-5 7.10 06: STORE SINGLE SETPOINT........7-6 7.11 07: READ DEVICE STATUS..........7-7 7.12 08: LOOPBACK TEST ............7-8...

  • Page 7: Relay Features

    3 RTDs can be monitored. These can all be in the sta- tor or 1 in the stator and 2 in the bearings. Installing a 239 in a motor starter for protection and moni- toring of motors will minimize downtime due to process problems.
  • Page 8 PROCESS THERMISTOR/ GROUND FAULT CONTROL STATOR RTD STATOR OVER SERVICE SERVICE BEARING TEMPERATURE RELAY ALARM RTDs BEARING OVER TEMPERATURE RS485 RS485 REMOTE COMMUNICATION MOTOR LOAD 819763AF.CDR Figure 1–1: CONTINUOUS PROTECTION FEATURES 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...
  • Page 9 1 OVERVIEW 1 OVERVIEW Figure 1–2: FEATURE HIGHLIGHTS – FRONT GE Multilin 239 Motor Protection Relay Courtesy of NationalSwitchgear.com...
  • Page 10 1 OVERVIEW 1 OVERVIEW Figure 1–3: FEATURE HIGHLIGHTS – REAR 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...

  • Page 11: Typical Applications

    1 OVERVIEW 1.2 TYPICAL APPLICATIONS Versatile features and simple programming controls make the 239 an ideal choice for motor and equipment protection in a wide range of applications. In addition to basic electrical protection for motors, the 239 can protect against common faults due to process problems, such as: 1.

  • Page 12: Order Code

    239PC Windows software (free upon request) • Phase and ground CTs • RS232 to RS485 converter (required to connect a computer to the 239 relay(s) to run 239PC • RS485 Terminating Network • 2.25” collar for limited depth mounting (1009-0068) •...

  • Page 13: Specifications

    UNDERCURRENT * TOTAL DELAY: INST + INTENTIONAL RANGE: 5 to 100% FLC / OFF trip time accuracy guaranteed if DELAY: 0 to 250 sec current > 1.4 × trip level setting GE Multilin 239 Motor Protection Relay Courtesy of NationalSwitchgear.com...
  • Page 14 100 ms CONFIGURATION: FORM C NO/NC both times at 120VAC / 125VDC CONTACT MATERIAL: SILVER ALLOY It is recommended that all 239 relays be powered up at least once per year to avoid NOTE deterioration of electrolytic capacitors in the power supply.
  • Page 15 (L × H × D) SHIP WEIGHT: 5 lbs. / 2.3 kg CERTIFICATION/COMPLIANCE ISO: Manufactured under an ISO9001 recognized program Recognized under E83849 CSA: Approved under LR41286 NOTE: Specifications subject to change without notice. GE Multilin 239 Motor Protection Relay Courtesy of NationalSwitchgear.com...
  • Page 16 1 OVERVIEW 1 OVERVIEW 1-10 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...

  • Page 17: Mounting

    239 INSTRUCTION MANUAL 2 INSTALLATION 2.1 MOUNTING Physical dimensions for the 239 and the required cutout dimensions are shown below. Once the cut- out and mounting holes are made in the panel, use the eight #6 self tapping screws supplied to secure the relay.

  • Page 18: Product Identification

    1. MODEL NO: The model number shows the configuration of the relay. The model number for a basic unit is 239. RTD and AN will appear in the model number only if the RTD option or Analog Output option is installed.

  • Page 19: External Connections

    RTD1 comp Alarm NC RTD1 ret Auxiliary NO RTD2 hot Auxiliary COM RTD2 comp Auxiliary NC RTD2 ret Service NO RTD3 hot Service COM RTD3 comp Service NC RTD3 ret Unused Unused GE Multilin 239 Motor Protection Relay Courtesy of NationalSwitchgear.com...
  • Page 20 PHASE C GROUND CONTROL CURRENT INPUTS POWER CONTROL POWER START STOP RELAY #1 GE Power Management TRIP 239 MOTOR PROTECTION RELAY USE SHIELDED TWISTED PAIR WIRE RS485 + RS485 RELAY #2 RS485 - GENERAL ALARM ALARM 485 GROUND THERMAL CAPACITY...
  • Page 21 CTs should be selected to be capable of supplying the required current to the total secondary load which includes the 239 relay burden mentioned in Section 1.4: SPECIFICATIONS at rated second- ary current and the connection wiring burden. The CT must not saturate under maximum current conditions which can be up to 8 times motor full load during starting or greater than 12 times during a short circuit.
  • Page 22 TYPICAL WIRING DIAGRAM. A ground CT with a ratio of 50:0.025 for sensing primary ground currents from 0.05 to 15 A is available from GE. Connect this CT to termi- nals 50:0.025 and COM. If a conventional 5 A secondary CT is used for zero sequence ground sens- ing, connect it to the 5A and COM terminals.
  • Page 23 NC/COM trip relay termi- nals. When control power to the 239 is lost, no protection is available and the motor will con- tinue to run. This has the advantage that the process will not shut down, however the motor may be damaged if a fault develops under these conditions.
  • Page 24 2 , or thermistor function . • SERVICE RELAY (32/33/34): If the 239 detects an internal failure during its self monitoring or if control power is not present, the NO/COM terminals of the service relay will be open to indicate that service is required.
  • Page 25 Discharging the thermal memory of the 239 gives the relay an unrealistic value for the thermal capacity remaining in the motor and it is possible to thermally damage the motor by restarting it. Shorting the Emergency Restart termi- nals together will have no effect unless the motor is stopped (no phase or ground current present).
  • Page 26 43730 type is the preferred choice for optimum sensitivity and linearity. Other RTDs that can be selected and used with the 239 are 100 Ω nickel, 120 Ω nickel and 10 Ω copper. RTDs do not have to be the same type, however the 239 must be programmed correctly so that each RTD input matches the installed type.
  • Page 27 0 to 10 V input to make the 0 to 20 mA output correspond to 0 to 10V (R = V/I = 10 V / 0.02 A = 500 Ω). When the GE Multilin TCS2 thermal capacity meter is connected to the terminals, select the 0 to 1 mA range.
  • Page 28 The master should be centrally located and can be used to view actual values and setpoints from each 239 relay called the slave device. Other GE Multilin relays or devices that use the Modbus RTU protocol can be connected to the communication link. Setpoints in each slave can also be changed from the master.

  • Page 29: Dielectric Strength Testing

    It may be required to test a complete motor starter for dielectric strength with the 239 installed. This is also known as "flash" or "hipot" testing. The 239 is rated for 1530 V AC isolation for 1 minute (or 1836 V AC for 1 second) between relay contacts, CT inputs, control power inputs and safety ground terminal 13.
  • Page 30 2 INSTALLATION 2 INSTALLATION Figure 2–8: DIELECTRIC STRENGTH TESTING 2-14 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...

  • Page 31: Front Panel

    • Status messages • Fault conditions STATUS INDICATORS TRIP AUXILIARY PICKUP • Trip: Lit when the 239 detects a trip. • Alarm: Lit when the 239 detects an alarm. • Auxiliary: Lit when the auxiliary relay is operated. ALARM SERVICE COMMUNICATE •...

  • Page 32: Display

    100%. If the default messages time is set to OFF, the 239 display will dim to the set brightness level after 5 minutes have elapsed since one of the keys on the keypad was last pressed.

  • Page 33: Keys

    This situation will occur if there is no connection, the serial wires have become disconnected or the master computer is inactive. If there is activity on the serial port but the 239 is not receiving valid messages for its internally programmed address the indicator will flash. This...
  • Page 34 To select messages within a subgroup press . To back out of the subgroup or access the MESSAGE previous message, press MESSAGE 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...
  • Page 35 3 OPERATION 3 OPERATION SETPOINT SETPOINT ]] SETPOINTS ]] SETPOINTS ]] S1 239 SETUP ]] S2 SYSTEM SETUP MESSAGE MOVES BACK MOVES FORWARD WITHIN SUBGROUP WITHIN SUBGROUP MESSAGE MESSAGE ] PREFERENCES TEMPERATURE DISPLAY IN: CELSIUS MOVES TO PREVIOUS DEFAULT MESSAGE TIME...

  • Page 36: Setpoint Access

    3.6 DEFAULT MESSAGES Up to 5 default messages can be selected to automatically scan sequentially when the 239 is left unattended. If no keys are pressed for the default message time set with 6 6(783?35()(5 (1&(6?'()$8/7 0(66$*( 7,0( then the currently displayed message will automatically be overwritten...
  • Page 37 MESSAGE MESSAGE message to be erased. If default messages are not known, wait until the 239 starts to display them and then write them down. If no default messages have been programmed, the 239 will remain on the current message and the display will dim to the level assigned in setpoint 6 6(783?35()(5(1&(6?'()$8/7 0(66$*( %5,*+71(66 after the delay assigned in 6 6(783?35()...
  • Page 38 3 OPERATION 3 OPERATION The 239 will scroll through the default messages in the sequence shown. SYSTEM STATUS Location: ACTUAL VALUES A1 STATUS\GENERAL NORMAL Location: ACTUAL VALUES A2 METERING\CURRENT AMPS CURRENT UNBALANCE Location: ACTUAL VALUES A2 METERING\CURRENT U/B = 0 %...

  • Page 39: Setpoint Entry Methods

    TEM SETUP on page 4–9 must be entered for the system to function correctly. In order to safeguard against the installation of a relay whose setpoints have not been entered, the 239 will trip and lock out until the values have been entered for these setpoints. A warning message “CAUSE OF LAST TRIP: PARAMETERS NOT SET”...
  • Page 40 SETPOINT SETPOINT SETPOINT SETPOINT SETPOINT ]] SETPOINTS ]] SETPOINTS ]] SETPOINTS ]] SETPOINTS ]] SETPOINTS ]] S1 239 SETUP ]] S2 SYSTEM SETUP ]] S3 OUTPUT RELAYS ]] S4 PROTECTION ]] S5 TESTING MESSAGE MESSAGE MESSAGE MESSAGE MESSAGE ] PREFERENCES...

  • Page 41: S1: 239 Setup

    4 PROGRAMMING 4 PROGRAMMING 4.2 S1: 239 SETUP Settings to configure the 239 are entered here. This includes user preferences, RS485 communica- tion port, loading of factory defaults, and user programmable messages. SETPOINT SETPOINT ]] SETPOINTS ]] SETPOINTS ]] S1 239 SETUP...
  • Page 42 DEFAULT MESSAGE TIME: Up to 5 default messages can be selected to automatically scan sequentially when the 239 is left unattended. If no keys are pressed for the default message time set with this setpoint, then the currently displayed message will automatically be overwritten by the first default message.
  • Page 43 BLOCK KEYPAD TRIP RESETS: This feature blocks any attempts made to reset the present trip using the RESET key on the 239 keypad. When this feature is enabled and a trip is present, pressing the RESET key will display the following flash message for 3 seconds.
  • Page 44 STORE is displayed and then momentarily remove power to the 239. It is a good idea to first load factory defaults when replacing a 239 to ensure all the settings are defaulted to reasonable values. CLEAR PRE-TRIP DATA: When <(6 is selected in this setpoint and the •...
  • Page 45 • PROGRAMMABLE MESSAGE: A 40-character message can be programmed using the key- pad, or via the serial port using the 239PC software. Using the 239 keypad, a new message can be written over the existing message as shown below. VALUE...
  • Page 46 EXAMPLE: The original 239 was ordered with the AN option. After receiving the unit, require- ments have changed for the 239, and the RTD option is now required. Step 1: To add the RTD option to the 239 while keeping the AN option enter 57'$1 in the 6(/(&7 237,216 72 (1$%/( setpoint.

  • Page 47: S2: System Setup

    RATIO: 85% Range: NO, YES DISABLE STARTS: ] END OF PAGE S2 DESIGNATES SETPOINTS THAT MUST BE PROGRAMMED BEFORE THE "TRIP" OUTPUT WILL RESET Figure 4–3: SETPOINTS PAGE 2 – SYSTEM SETUP GE Multilin 239 Motor Protection Relay Courtesy of NationalSwitchgear.com...
  • Page 48 500. When the relay is shipped with factory defaults loaded, the phase CT ratio is set off. When off is the CT value, the 239 is forced to a trip state as a safety pre- caution until a valid CT value is entered.
  • Page 49 85% for the +27&2/' &859( 5$7,2 . The +27&2/' &859( 5$7,2 setpoint is used by the 239 to thermally model the motor when the average phase current is at or below the FLC setpoint. When the motor is cold (motor tempera- ture at ambient) the thermal capacity used will be 0%.
  • Page 50 DISABLE STARTS: In some applications start protection may not be required. Therefore, by set- ting this setpoint to <(6 , the start protection on the 239 can be defeated. If the setpoint is set to <(6 , the 239 will go directly into run condition and overload curves will be employed to protect the connected load.

  • Page 51: S3: Output Relays

    Contact configuration is opposite to that shown in Figure 2–3: TYPICAL WIRING DIAGRAM on page 2–4 for relays programmed as failsafe when control power is applied GE Multilin 239 Motor Protection Relay 4-13 Courtesy of NationalSwitchgear.com...
  • Page 52 121)$,/6$)( so the trip relay is normally de-energized for a non-trip condition and energized for a trip. No trip occurs if control power to the 239 is lost but there will be no motor protection while this condition is present. Set the mode to )$,/6$)( (the relay coil is normally energized for a non-trip condition going non-energized for a trip) to cause a trip when control power to the 239 is not present to ensure continuous motor protection.

  • Page 53: S4: Protection

    IMMEDIATE OVERLOAD PICKUP ≥ 1.1 x FLC Range: 0 to 6000, UNLIMITED INHIBIT ON START MESSAGE L Step: 1 s FOR: UNLIMITED s MESSAGE M SEE NEXT PAGE SEE NEXT PAGE GE Multilin 239 Motor Protection Relay 4-15 Courtesy of NationalSwitchgear.com...
  • Page 54 Step: 1% ALARM PICKUP ≤ 5 % | HOT MOTOR Range: 0 to 100; Step: 1% THERMAL CAPACITY USED ALARM ≥ OFF % MESSAGE MESSAGE SEE NEXT PAGE SEE NEXT PAGE 4-16 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...
  • Page 55 RESISTANCE: 5.0 kΩ MESSAGE Range: 0.1 to 30.0 THERMISTOR COLD Step: 0.1 k Ω RESISTANCE: 0.3 kΩ MESSAGE Range: ON, OFF THERMISTOR NOT CONNECTED ALARM: OFF SEE NEXT PAGE SEE NEXT PAGE GE Multilin 239 Motor Protection Relay 4-17 Courtesy of NationalSwitchgear.com...
  • Page 56 | RTD SENSOR FAILURE Range: ON, OFF RTD SENSOR FAILURE ALARM: OFF MESSAGE MESSAGE DESIGNATES SETPOINTS THAT ARE ONLY VISIBLE IF SEE NEXT PAGE SEE NEXT PAGE RTD OPTION IS INSTALLED 4-18 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...
  • Page 57 MESSAGE Step: 0.1 x CT PICKUP ≥ 10 x CT Range: 10 to 60000, INST 2nd PHASE S/C Step: 10 ms DELAY: INST ms SEE NEXT PAGE SEE NEXT PAGE GE Multilin 239 Motor Protection Relay 4-19 Courtesy of NationalSwitchgear.com...
  • Page 58 PICKUP ≥ 10 x CT Range: 10 to 60000, INST 4th PHASE S/C Step: 10 ms DELAY: INST ms ] END OF PAGE 4 Figure 4–5: SETPOINTS PAGE 4 – PROTECTION 4-20 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...
  • Page 59 PHASE TIMED OVERLOAD CURVES on page 4–22 and the next lowest curve selected. Curve points are also shown in tabular form in Table 4–2: 239 PHASE OVERLOAD TRIP TIMES (SEC- ONDS) on page 4–23. Points for a selected curve can be plotted directly on curves for associ- ated equipment to facilitate a coordination study.
  • Page 60 4 PROGRAMMING 4 PROGRAMMING 100000 10000 1000 TRIP TIME (seconds) MULTIPLIER 10.0 100.0 CURRENT (I/Ipu) Figure 4–6: PHASE TIMED OVERLOAD CURVES 4-22 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...
  • Page 61 4 PROGRAMMING 4 PROGRAMMING Table 4–2: 239 PHASE OVERLOAD TRIP TIMES (SECONDS) CURVE MULTIPLE OF MOTOR FULL LOAD CURRENT NUMBER 1.03 1.05 1437 416.7 70.0 29.2 16.7 10.9 3.64 2.50 1.39 0.88 0.73 2874 1707 833.4 140.0 58.3 33.3 21.9 11.7...
  • Page 62 239. When this setpoint is set to ,167 the 239 will trip within 45 ms of the onset of the short circuit. Both the short circuit trip level and time delay should be set to co-ordinate with other system protective relays to minimize equipment shutdown during a high current fault.
  • Page 63 95% and the auxiliary relay was selected with the 81'(5&855(17 )81&7,21 setpoint, the 239 would always sense an undercurrent condition with the auxiliary relay energized. Bearing wear could cause the current to increase above 95 A causing the undercur- rent condition to disappear.
  • Page 64 “BREAKER FAILURE ALARM” message will be displayed and the assigned output relay will be active. If the function is assigned to $8;,/,$5< , the auxiliary output relay will be active but, no message will be displayed. 4-26 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...
  • Page 65 When contactors are used in solidly grounded systems, the ground fault trip time should be longer than the fuse interrupt time. GE Multilin 239 Motor Protection Relay 4-27 Courtesy of NationalSwitchgear.com...
  • Page 66 NOTE: When the phase current increases from 0, the *5281' 75,3 '(/$< 21 67$57 setpoint described below is used until the 239 determines whether the motor is RUNNING or STARTING. Refer to Section 5.2: A1: STATUS on page 5–2 for details on how the 239 detects a start condi- tion. •...

  • Page 67: Temperature

    NOTE: When the phase current increases from 0, *5281' $/$50 '(/$< 21 67$57 described below is used until the 239 determines whether the motor is RUNNING or START- ING. Refer to Section 5.2: A1: STATUS on page 5–2 for details on how the 239 detects a start condi- tion. •...
  • Page 68 PTC thermistor connection when the +27 5(6,67$1&( is programmed > &2/' 5(6,6 7$1&( . The 239 assumes a NTC thermistor connection when the &2/' 5(6,67$1&( is programmed ≥ +27 5(6,67$1&( . PTC thermistors are preferred because three PTC thermistors can be con- nected in series to monitor each of the stator phases.
  • Page 69 VALUES display for that RTD will be "no RTD". Readings from the disconnected RTD will then be ignored for overtemperature protection. The 239 relay will generate an alarm to warn of the faulty RTD if this setpoint is enabled. Setpoints 6 3527(&7,21?7(03(5$785(?57' ?57' 75,3 and 6 3527(&7,21?7(03(5$785(?57' ?57' $/$50 should be set to off for any unused RTD ter-...
  • Page 70 214.8 Ω 269.9 Ω 15.61 Ω 168.5 Ω 223.2 Ω 280.8 Ω 16.00 Ω 172.2 Ω 231.6 Ω 291.9 Ω 16.38 Ω 175.8 Ω 240.0 Ω 303.5 Ω 16.78 Ω 4-32 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...

  • Page 71: Switch Inputs

    Therefore, by setting this setpoint to <(6 , the start protection on the 239 can be defeated. If the setpoint is set to <(6 , the 239 will go directly into run condition and overload curves will be employed to protect the connected load.
  • Page 72 MAIN = main setpoints The message shown below is available on the 239, to indicate which is the currently selected group. The 239 will also indicate the setpoints group that was in use at the time of the last trip. xxxx SETPOINTS GROUP...
  • Page 73 4 PROGRAMMING 4 PROGRAMMING Figure 4–7: TWO SPEED MOTOR WIRING DIAGRAM GE Multilin 239 Motor Protection Relay 4-35 Courtesy of NationalSwitchgear.com...

  • Page 74: S5: Testing

    4 PROGRAMMING 4 PROGRAMMING 4.9 S5: TESTING SETPOINT SETPOINT ]] SETPOINTS ]] SETPOINTS ]] S5 TESTING ]] S1 239 SETUP MESSAGE MESSAGE MESSAGE Range: NO, YES ] TEST CONFIGURATION DISABLE START PROTECTION: NO Range: 5 to 300, UNLIMITED PROTECTION DISABLED MESSAGE Step: 5 min.
  • Page 75 Range: 0 to 9999 step 1 ] GE POWER MANAGEMENT SERVICE PASSCODE: ] USE ONLY DESIGNATES SETPOINTS THAT ARE ONLY VISIBLE IF RTD OPTION IS INSTALLED Figure 4–8: SETPOINTS PAGE 5 – TESTING GE Multilin 239 Motor Protection Relay 4-37 Courtesy of NationalSwitchgear.com...
  • Page 76 /2&.(' 52725 &855(17 and 6$)( 67$// 7,0( setpoints. When this feature is enabled the 239 assumes the motor is in RUN condition any time current is present even on initial startup inrush current.
  • Page 77 Simulated currents can be forced instead of the actual currents sensed by the external CTs con- nected to the 239. This allows verification of all current related relay functions such as timed over- load trip. It also allows verification that external trip and alarm wiring is responding correctly.
  • Page 78 Now set 6 7(67,1*?&855(17 6,08/$7,21?6,08/$7,21 21 . The relay will see this simulated current in all 3 phases instead of the actual input current. The 239 should trip after a time determined by 6 3527(&7,21?3+$6( &855(17?81%$/$1&(?3+$6( 81%$/$1&( '(/$< setpoint. Set 6 7(67,1*?&85 5(17 6,08/$7,21?6,08/$7,21 2)) after testing is complete.
  • Page 79 When the programmed time has elapsed, switch inputs simulation will turn off. If 81/,0,7(' is selected, simulated switch input status will be used until simulation is turned off via the 6,08/$ 7,21 212)) setpoint or via the serial port or until control power is removed from the 239. f) THERMISTOR SIMULATION SIMULATION: Enter 21 to switch from actual thermistor input to the programmed simulation •...
  • Page 80 When the programmed time has elapsed, thermistor simulation will turn off. If 81/,0,7(' is selected, simulated thermistor input will be used until simulation is turned off via the 6,08/$7,21 212)) setpoint or via the serial port or until control power is removed from the 239. g) RTD SIMULATION •...

  • Page 81: Actual Values Viewing

    5 MONITORING 5 MONITORING 239 INSTRUCTION MANUAL 5 MONITORING 5.1 ACTUAL VALUES VIEWING Any measured value can be displayed on demand using the key. Each time the ACTUAL ACTUAL key is pressed, the beginning of a new page of monitored values is displayed. These are grouped as: A1: STATUS, A2: METERING, A3: PRODUCT INFO.

  • Page 82: A1: Status

    THERMISTOR ALARM THERMISTOR NOT CONNECTED THERMAL CAPACITY USED ALARM COMMUNICATION FAILURE ALARM OPTION SWITCH 1 ALARM OPTION SWITCH 2 ALARM MECHANICAL JAM ALARM BREAKER FAILURE ALARM NO ACTIVE ALARM SEE NEXT PAGE 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...
  • Page 83 Range: OPEN, CLOSED OPTION SWITCH 1 MESSAGE SWITCH STATE: OPEN MESSAGE Range: OPEN, CLOSED OPTION SWITCH 2 SWITCH STATE: OPEN Range: OPEN, CLOSED MAIN SETPOINTS GROUP CURRENTLY IN USE SEE NEXT PAGE GE Multilin 239 Motor Protection Relay Courtesy of NationalSwitchgear.com...
  • Page 84 START condition occurs if the average of the three phase currents rises above the full load cur- rent setting in 6 6<67(0 6(783?02725 '$7$?02725 )8// /2$' &855(17 within 300 ms (worst case) of initial detection of current by the 239. •...
  • Page 85 PROGRAMMABLE MESSAGE A 40 character message can be programmed using the keypad or via the serial port using the 239PC software. See 4.2: S1: 239 SETUP on page 4–3 for an example of programming this message using the keypad.

  • Page 86: A2: Metering

    CT secondary is wired to match the 1 or 5 A input. If the displayed current does not match the actual current, check this setpoint and wiring. During starting, the display will auto- 239 Motor Protection Relay GE Multilin...
  • Page 87 When the thermal capacity used equals 100%, the 239 trips the motor since the motor is considered to be running at its maximum temperature. With no overloads present, the thermal capacity used will gradu- ally decrease to a steady state value, determined as described in 6 6<67(0 6(783?02725...
  • Page 88 31.5 kΩ, THERMISTOR NOT CONNECTED alarm message will be displayed. Therefore, if the thermistor is not being used, the function must be set to off. 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...

  • Page 89: A3: Product Info

    There may be differences in the product and manual if the revision codes do not match. • BOOT PROGRAM VERSION: This identifies the firmware installed internally in the PROM mem- ory of the 239. This does not affect the functionality of the 239. GE Multilin 239 Motor Protection Relay...
  • Page 90 239 should be specified with the order. It is possible for the 239 to have more than one 02' 180%(5 installed (maximum of 5). In this case the message will display all the 02' 180%(5 s separated by a comma (i.e. 501, 502, 503).

  • Page 91: Overview

    Windows environment. The 239PC software can run without a 239 connected to a computer and save settings to a file. If a 239 is connected to a serial port on a computer and communications is enabled, the 239 can be pro- grammed from the Setpoint screens.

  • Page 92: 239Pc Version

    GE Power Management MOTOR PROTECTION RELAY Instruction Manual Firmware Revision: 2.6x 239PC Software: 2.6x or newer Manual P/N: 1601-0067-D9 Motor Pr otection Relay Copyright © 2002 GE Multilin CAUSE OF LAST TRIP: MECHANICAL JAM Front page of manual. TRIP AUXILIARY PICKUP...

  • Page 93: Installing/Upgrading 239Pc

    1. Start Windows. 2. Insert the GE Multilin Products CD into the appropriate drive (alternately, you can go to the GE Multilin website at www.GEindustrial.com/multilin to continue the installation—the steps are roughly the same).
  • Page 94 8. Verify that you wish to install 239PC by clicking Yes. 9. Click on CONTINUE WITH 239 PC VERSION 2.50 INSTALLATION to continue installing the PC software directly to your hard drive. If you wish to make a 1.44MB floppy disk containing the 239PC soft- ware, click on Start Copying.
  • Page 95 14. Click on Finish to complete the installation of 239PC. It is recommended that you restart Windows before using the program. The 239PC program may also be installed from the GE Multilin website at www.GEindustrial.com/multilin. Follow the instructions above for installation.

  • Page 96: 239Pc Menu Structure

    6 239PC SOFTWARE 6 239PC SOFTWARE 6.5 239PC MENU STRUCTURE 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...

  • Page 97: Configuring 239Pc

    6 239PC SOFTWARE 6.6 CONFIGURING 239PC 1. Start 239PC by double-clicking the 239PC icon in the GE Multilin folder (or alternate folder con- taining the 239PC icon) or from the Start menu. 2. Once 239PC starts to execute, it will attempt to communicate with the relay. If communication is established successfully, the screen and LEDs on the relay graphic shown in the 239PC window will display the same information as the actual relay.
  • Page 98 7. Set Baud Rate to match the relay baud rate setpoint. 8. Set Parity to match the relay parity setpoint. 9. If using the GE Multilin F485 converter, leave the Control Type setting as is. 10. Set Startup Mode to “Communicate with relay”.

  • Page 99: Firmware Upgrade

    3. The file to be loaded into the 239 must match the hardware inside the 239. •If the 239 serial number begins with B or C, select the file beginning with the characters 64C. •If the 239 serial number begins with D, select the file beginning with the characters 64D.
  • Page 100 64 D 250 C4 000 Modification number (000 = none) For GE Power Management use only Product firmware revision (e.g. 2.50). On the 239, this number is found in Actual Values page A3 under FIRMWARE VERSION/MAIN PROGRAM VER Required product hardware revision. This letter must match...
  • Page 101 6 239PC SOFTWARE 6 239PC SOFTWARE The program will now prepare the relay to receive the new firmware file. The 239 will display the UPLOAD MODE message. If the 239 has boot code revision 2.00 or earlier and a liquid crystal display, the UPLOAD MESSAGE may not appear.

  • Page 102: Using 239Pc

    All 239 setpoints can be changed in a similar manner. b) ACTUAL VALUES If a 239 is connected to a PC via the serial port, any measured value, status and last trip data can be displayed. Use the Actual pull-down menu to select various measured value screens. Monitored val- ues will be displayed and continuously updated.
  • Page 103 SAVING AND PRINTING SETPOINTS on page 6–9. d) LOADING SETPOINT FILES • To load an existing setpoints file to a 239 and/or send the setpoints to the 239, follow the steps outlined in Section 6.7c) STEP 3—LOADING SAVED SETPOINTS on page 6–11. e) GETTING HELP The complete instruction manual, including diagrams such as wiring, is available through on-line Help.
  • Page 104 6 239PC SOFTWARE 6 239PC SOFTWARE 6-14 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...

  • Page 105: Communications

    7.3 DATA FRAME FORMAT / DATA RATE One data frame of an asynchronous transmission to or from a 239 consists of 1 start bit, 8 data bits, and 1 stop bit. This produces a 10 bit data frame. This is important for transmission through modems at high bit rates (11 bit data frames are not supported by Hayes modems at bit rates of greater than 300 bps).

  • Page 106: Data Packet Format

    FUNCTION CODE: This is the second byte of every transmission. Modbus defines function codes of 1 to 127. The 239 implements some of these functions. See section 3 for details of the supported function codes. In a master request transmission the FUNCTION CODE tells the slave what action to perform.
  • Page 107 7 COMMUNICATIONS 7 COMMUNICATIONS If a 239 Modbus slave device receives a transmission in which an error is indicated by the CRC-16 calculation, the slave device will not respond to the transmission. A CRC-16 error indicates that one or more bytes of the transmission were received incorrectly and thus the entire transmission should be ignored in order to avoid the 239 performing any incorrect operation.

  • Page 108: Timing

    Holding and input registers are 16-bit (two byte) values transmitted low order byte first. Thus all 239 Setpoints and Actual Values are sent as two bytes. The maximum number of registers that can be read in one transmission is 125. Function codes 03 and 04 are configured to read setpoints or actual values interchangeably because some PLCs do not support both of them.

  • Page 109: 05: Execute Operation

    • 239 Implementation: Execute Operation This function code allows the master to request a 239 to perform specific command operations. The command numbers listed in the Commands area of the memory map correspond to operation code for function code 05.

  • Page 110: 06: Store Single Setpoint

    239 Implementation: Store Single Setpoint This command allows the master to store a single setpoint into the memory of a 239. The slave response to this function code is to echo the entire master transmission. a) MESSAGE FORMAT AND EXAMPLE Request slave 11 to store the value 0064 in Setpoint address 1020.

  • Page 111: 07: Read Device Status

    This is a function used to quickly read the status of a selected device. A short message length allows for rapid reading of status. The status byte returned will have individual bits set to 1 or 0 depending on the status of the slave device. 239 General Status Byte: LSBit B0: Alarm condition = 1...

  • Page 112: 08: Loopback Test

    • Modbus Implementation:Loopback Test • 239 Implementation: Loopback Test This function is used to test the integrity of the communication link. The 239 will echo the request. a) MESSAGE FORMAT AND EXAMPLE Loopback test from slave 11. Master Transmission Bytes...

  • Page 113: 16: Store Multiple Setpoints

    This function code allows multiple Setpoints to be stored into the 239 memory. Modbus "registers" are 16 bit (two byte) values transmitted low order byte first. Thus all 239 setpoints are sent as two bytes. The maximum number of Setpoints that can be stored in one transmission is dependent on the slave device.

  • Page 114: 16: Performing Commands

    16. To perform this operation using function code 16 (10H), a certain sequence of commands must be written at the same time to the 239. The sequence consists of: Command Function register, Command operation register and Command Data (if required). The Command Function register must be written with the value of 5 indicating an execute operation is requested.

  • Page 115: Error Responses

    7.15 ERROR RESPONSES When a 239 detects an error other than a CRC error, a response will be sent to the master. The MSbit of the FUNCTION CODE byte will be set to 1 (i.e. the function code sent from the slave will be equal to the function code sent from the master plus 128).
  • Page 116 7 COMMUNICATIONS For example, if the values of Phase A Current (register address 0229H) and RTD 1 Celsius Temper- ature (register address 0240H) are required to be read from a 239, their addresses may be remapped as follows: 1. Write 0229H to address 0180H (User Definable Index 0000) using function code 06 or 16.

  • Page 117: Memory Map

    7 COMMUNICATIONS 7 COMMUNICATIONS 7.18 239 MEMORY MAP Table 7–1: 239 MEMORY MAP (Sheet 1 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) Product Information (Input Registers) Addresses – 0000 to 007F...
  • Page 118 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 2 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 0040 Manufacture Day day of manufacture 0041 Manufacture Month F109...
  • Page 119 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 3 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 0108 User Definable Data 0008 0109 User Definable Data 0009...
  • Page 120 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 4 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 0209 Trip Pickup Status Flags F103 020A Motor Status 020B...
  • Page 121 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 5 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 022C Ground Current 0.1 x A 022D Current Unbalance 022E...
  • Page 122 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 6 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 0250 DEBUG ADC Reference Ω 0251 DATA Thermistor Reading 0252...
  • Page 123 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 7 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 0273 Message Buffer characters 39 and 40 ASCII 0274 Reserved...
  • Page 124 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 8 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 100D Reserved 100E Reserved 100F Reserved 1010 RS485 Serial Communication Failure Alarm...
  • Page 125 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 9 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 1031 Reserved 1032 Reserved 1033 Reserved 1034 Reserved 1035 Reserved...
  • Page 126 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 10 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 1055 Reserved 1056 Reserved 1057 Reserved 1058 PHASE Phase S/C Trip...
  • Page 127 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 11 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 1079 Phase Unbalance Trip Pickup 5-100 107A Phase Unbalance Delay...
  • Page 128 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 12 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 109D Reserved 109E Reserved 109F Reserved 10A0 RTD 1 RTD 1 Application (RTD Option)
  • Page 129 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 13 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 10C0 OPTION Option Switch 1 Function 0 = OFF SWITCH 1...
  • Page 130 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 14 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 10E4 Reserved 10E5 Reserved 10E6 Reserved 10E7 Reserved 10E8 Reserved...
  • Page 131 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 15 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 1108 Flash message characters 33 and 34 32-127 ASCII " "...
  • Page 132 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 16 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 112C Option 2 Input 0 = OPEN 112D Switch Simulation Period...
  • Page 133 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 17 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 119B Motor Full Load Current 1-1500 100 A 119C Phase Timed O/L Curve No...
  • Page 134 7 COMMUNICATIONS 7 COMMUNICATIONS Table 7–1: 239 MEMORY MAP (Sheet 18 of 18) GROUP DESCRIPTION REGISTER STEP UNITS & FOR- FACTORY ADDR VALUE VALUE SCALE DEFAULT VALUE (HEX) RANGE (CONVERTED) 11CC Reserved 11CD Reserved 11CE Reserved 11CF Reserved ↓ 11EF...

  • Page 135: Memory Map Data Formats

    3 = 9600 0000 = no key 4 = 19200 FE02 = RESET UNSIGNED INTEGER - YES / NO FFFF FE01 = STORE 0 = No FE08 = SETPOINT 1 = Yes GE Multilin 239 Motor Protection Relay 7-31 Courtesy of NationalSwitchgear.com...
  • Page 136 14 = Clear Statistics 1 = Momentary UNSIGNED INTEGER FFFF - KEYPRESS SIMULATION 2 = Latched 49 = ’1’ = SETPOINT THERMISTOR/MECHANICAL JAM FFFF 50 = ’2’ = ACTUAL 0 = Off 7-32 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...
  • Page 137 0002 Not Used 0004 RTD 3 0004 Not Used 0008 PARITY TYPE FFFF Not Used 0010 NONE 0000 Not Used 0020 EVEN 0001 Not Used 0040 0002 Not Used 0080 GE Multilin 239 Motor Protection Relay 7-33 Courtesy of NationalSwitchgear.com...
  • Page 138 RTD Failure Alarm (RTD Option) 0100 Not Used 1000 Communication Failure 0200 Not Used 2000 Internal Fault Alarm 0400 Not Used 4000 Thermal Capacity Alarm 0800 Not Used 8000 Option Switch 1 Alarm 1000 7-34 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...
  • Page 139 F107 RELAYS FFFF (0 = DE-ENERGIZED, 1 = ENERGIZED) 4 = April Trip Relay 0001 5 = May Alarm Relay 0002 6 = June Auxiliary Relay 0004 7 = July GE Multilin 239 Motor Protection Relay 7-35 Courtesy of NationalSwitchgear.com...
  • Page 140 1 = 2 Group 2 = 3 Group 3 = 4 Group F114 Ground Current Scale Factor FFFF 10 = RESIDUAL or X:5 GROUND SENS- 100 = OFF or 50:0.025 GROUND SENSING 7-36 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...

  • Page 141: Testing

    CTs. To accomplish this, a primary high current injection test set is required. Operation of the entire relay system, except the phase and ground CTs, can be checked by applying input signals to the 239 from a secondary injection test set as described in the following sections.

  • Page 142: Phase Current Accuracy

    8 TESTING 8.3 PHASE CURRENT ACCURACY Any phase current protection is based on the ability of the 239 to read phase input currents accu- rately to ±2% of full scale. Perform the steps below to test the phase current accuracy.

  • Page 143: Phase Current Overload

    Use the formulae shown below to calculate percent unbalance using the currents recorded in the table. Compare the calculated value to the displayed value on $ 0(7(5,1*?&85 5(17?&855(17 81%$/$1&( 8% and ensure they are match. GE Multilin 239 Motor Protection Relay Courtesy of NationalSwitchgear.com...
  • Page 144 , we have % unbalance given by: –     73 91 – × × -------------------- - --------------------- - 100% 100%     Therefore, the % unbalance in this case is 18%. 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...

  • Page 145: Ground Current Accuracy

    5(17?*5281' &855(17 and continue increasing the input current. When the display current of 80 A (80% of 3+$6( &7 35,0$5< ) is reached, the 239 trip relay will activate and the TRIP LED will become lit. The 239 will display CAUSE OF LAST TRIP: GROUND FAULT message.

  • Page 146: Switch Input

    DC ammeter. Verify the meter results with expected results shown in the table below. If the 239 is turned off or 15 min- utes have expired since 6 7(67,1*?$1$/2* 287387?6,08/$7,21?6,08/$7,21 was turned on this setpoint will automatically turn off to disable analog output simulation.

  • Page 147: Thermistor Alarm

    1. Slowly decrease the AC voltage applied to a 239 relay until the UNDERVOLTAGE message appears on the 239 display. At this instant all output relays will go to their de-energized state and the SERVICE LED turns on. This phenomenon should occur after the voltage has decreased below 70 V.

  • Page 148: Routine Maintenance Verification

    4. Other trip or alarm conditions using ground current data and RTD temperature data can be simu- lated using the procedures outlined in the previous sections. 5. To test the operation of the 239 output relays and the switchgear connected to them setpoint 6 7(67,1*?7(67 5(/$<6 /('6?23(5$7,21 7(67 is used.
  • Page 149 8 TESTING 8 TESTING Figure 8–2: 239 HARDWARE BLOCK DIAGRAM GE Multilin 239 Motor Protection Relay Courtesy of NationalSwitchgear.com...
  • Page 150 8 TESTING 8 TESTING 8-10 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...
  • Page 151 24 months from date of shipment from factory. In the event of a failure covered by warranty, GE Multilin will undertake to repair or replace the relay providing the warrantor determined that it is defective and it is returned with all transportation charges prepaid to an authorized service cen- tre or the factory.
  • Page 152 A.1 239 WARRANTY APPENDIX A 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...
  • Page 153 AUXILIARY FUNCTION ..........4-14 DEFAULTS ..............4-6 AUXILIARY OPERATION ........... 4-14 DIELECTRIC STRENGTH TESTING ....2-13, 2-14 AUXILIARY RELAY ............ 4-14 DIMENSIONS .............. 2-1 DISABLE STARTS ............4-12 DISPLAY ..............3-2 BAUD RATE ..............4-6 GE Multilin 239 Motor Protection Relay Courtesy of NationalSwitchgear.com...
  • Page 154 ORDER CODE ............ 1-6, 5-10 OUTPUT RELAYS ............2-7 OVERLOAD ..............4-21 OVERLOAD CURVE ........... 4-21 KEYS ................3-3 OVERLOAD CURVES ..........4-21 timed ............... 4-21 OVERLOAD LOCKOUT TIME ........4-21 OVERLOAD PICKUP DISPLAY ENABLE .......4-5 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...
  • Page 155 ..............4-14 REVISIONS undercurrent ............4-25 firmware ..............2-2 SETPOINTS PAGE 1 – 239 SETUP ......4-4 manual ..............2-2 SETPOINTS PAGE 2 – SYSTEM SETUP ...... 4-9 ROUTINE MAINTENANCE VERIFICATION ....8-8 SETPOINTS PAGE 3 – OUTPUT RELAYS ....4-13 RS485 COMMUNICATION SETPOINTS PAGE 4 –...
  • Page 156 USER DEFINABLE MEMORY MAP ......7-11 THERMISTOR ............4-29 input temperature ............5-8 THERMISTOR ALARM TEST ........8-7 THERMISTOR INPUT ..........2-9 programming ............4-29 WARRANTY ..............A-1 testing ..............8-7 WIRING DIAGRAM ............2-4 THERMISTOR SIMULATION ........4-41 239 Motor Protection Relay GE Multilin Courtesy of NationalSwitchgear.com...
  • Page 157 NOTES GE Multilin 239 Motor Protection Relay Courtesy of NationalSwitchgear.com...
  • Page 158 GE MULTILIN WEBSITE The latest product information for the 239 relay is available on the Internet via the GE Multilin home page: http://www.GEindustrial.com/multilin Specific resources can be accessed from this menu Select from the Products list to proceed directly to the 239...

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