Multilin SR469 - Starter Failure

S11 MONITORING 4. SETPOINT PROGRAMMING
4-64
4.12.2 STARTER FAILURE
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FUNCTION:
If the Starter Failure alarm feature is enabled as latched or unlatched, any time the SR469 initiates a trip, it will monitor the Starter
Status input and the motor current. If the starter status contacts do not change state or motor current does not drop to zero after the
programmed time delay, an alarm will occur. The time delay should be slightly longer than the breaker or contactor operating time. In the
event that an alarm does occur, if Breaker was chosen as the starter type, the alarm will be Breaker Failure. If on the other hand, Con-
tactor was chosen for starter type, the alarm will be Welded Contactor.
Also, if the starter type chosen is Breaker, Trip Coil Supervision may be enabled.
If
52 Closed is selected, the trip coil supervision circuitry will monitor the trip coil circuit for continuity any time that the starter status input
indicates that the breaker is closed or motor current is detected. If that continuity is broken, a Starter Failure alarm will indicate Trip Coil
Supervision.
If
52 Open/Closed is selected, the trip coil supervision circuitry will monitor the trip coil circuit for continuity at all times regardless of
breaker state. This requires an alternate path around the 52a contacts in series with the trip coil when the breaker is open. See the
following figure for modifications to the wiring and proper resistor selection. If that continuity is broken, a Starter Failure alarm will indi-
cate Trip Coil Supervision.