Table 3-4 Trip/Alarm Messages And Fault Diagnosis - GE MULTILIN 269 MOTOR MANAGEMENT RELAY Series Instruction Manual

3 SETUP AND USE

Table 3-4 TRIP/ALARM Messages and Fault Diagnosis

Pri. Information Line
1
SELF-TEST ALARM SELF-TEST ALARM
A/D H/W FAIL A/D H/W FAIL
SELF-TEST ALARM SELF-TEST ALARM
RTD H/W FAIL. RTDs RTD H/W FAIL. RTDs
SELF-TEST ALARM SELF-TEST ALARM
RAM FAIL RAM FAIL
SELF-TEST ALARM FACTORY SELF-TEST ALARM FACTORY
SETPOINTS LOADED SETPOINTS LOADED
2
PHASE S/C TRIP PHASE S/C TRIP
3
RAPID TRIP RAPID TRIP
4
SINGLE PHASE TRIP SINGLE PHASE TRIP
5
GROUND FAULT TRIP GROUND FAULT TRIP
6
OVERLOAD TRIP OVERLOAD TRIP
LOCKOUT TIME = XXX MIN. LOCKOUT TIME = XXX MIN.
7
STARTS/HOUR STARTS/HOUR
LOCKOUT TIME = XXX MIN. LOCKOUT TIME = XXX MIN.
8
TIME BETWEEN STARTS TIME BETWEEN STARTS
LOCKOUT TIME = XXX MIN LOCKOUT TIME = XXX MIN
9
UNBALANCE TRIP UNBALANCE TRIP
10
STATOR RTD TRIP STATOR RTD TRIP
RTD # X RTD # X = =
11
RTD TRIP RTD TRIP
RTD # X RTD # X = =
12
ACCEL. TIME TRIP ACCEL. TIME TRIP
13• •
PHASE REVERSAL TRIP PHASE REVERSAL TRIP
14• •
UNDERVOLTAGE TRIP UNDERVOLTAGE TRIP
15• •
OVERVOLTAGE TRIP OVERVOLTAGE TRIP
16
UNDERCURRENT TRIP UNDERCURRENT TRIP
3-42
Explanation
Problem in A/D circuit detected by
internal self-test. Service required.
Problem in RTD circuit detected by
internal self-test. Service required.
OFF OFF
Number of stator RTDs is set to
zero, and all RTD setpoints are set
to "OFF".
Problem in RAM detected by internal
self-test. Service required.
Problem in NOVRAM detected by
internal self-test. Service required.
Short Circuit Trip Level exceeded for
a time greater than the Short Circuit
Time Delay.
Rapid trip / Mech. Jam Trip Level
exceeded for a time greater than the
Rapid Trip Time Delay.
Unbalance of over 30% present for a
time greater than 4 seconds.
Ground Fault Trip Level exceeded for
a time greater than the Ground Fault
Trip Time Delay.
Motor thermal capacity exceeded.
Motor lock-out time is also shown.
Total number of motor starts over the
past hour greater than Number of
Starts per Hour setpoint.
Time elapsed since the last start has
not exceeded Time Between Starts
setpoint.
Unbalance Trip Level exceeded for a
time greater than the Unbalance Trip
Time Delay (all phases > 0.1 × FLC).
Stator RTD Trip Level temperature
exceeded on at least one stator RTD.
XXX XXX C C
RTD Trip Level temperature ex-
ceeded.
XXX XXX C C
Motor did not enter a normal running
state (ie. phase current < FLC) within
Acceleration Time setpoint.
Phases not connected to motor in
proper sequence.
Low incoming voltage from substa-
tion.
High incoming voltage from substa-
tion.
Phase current less than U/C Trip
setpoint for a time period greater
than the U/C trip time delay.
Suggestions
- Return relay for service.
- Return relay for service.
- Return relay for service.
- Return relay for service.
- Check for motor winding shorts.
- Check system for jams / exces-
sive load.
- Check continuity of incoming
three phase supply.
- Check for motor winding to case
or ground shorts.
- Check motor for moisture or
conductive particles.
- Excessive load with motor running
or locked rotor on start.
- Wait for motor to cool.
- Reduce number of starts during
normal motor operation.
- Wait until Inhibit expires.
- Check incoming supply phases
for unbalance.
- Check for motor winding shorts.
- Increase Trip Level if required.
- Check motor ventilation and am-
bient temperature.
- Allow motor to cool.
- Excessive load or locked rotor on
start.
- Check incoming phase sequence
and VT polarity.
- Adjust transformer tap changer.
- Adjust transformer tap changer.
- Check system for loss of load.
Manual
Ref.
3.23
3.14
3.13
3.10
3.11
3.18
3.9
3.10
3.16
3.17
3.8
3.19
3.12