Starter Failure - GE 469 Instruction Manual

469
Motor Management Relay

Starter Failure

STARTER
FAILURE
5–74
PATH: SETPOINTS S11 MONITORING ELEMENTS
[ ] STARTER FAILURE
ALARM: Off
STARTER TYPE:
MESSAGE
Breaker
ASSIGN ALARM RELAYS:
MESSAGE
Alarm
STARTER FAILURE
MESSAGE
DELAY: 100 ms
SUPERVISION OF TRIP
MESSAGE
COIL: Disabled
STARTER FAILURE
MESSAGE
ALARM EVENTS: Off
If the
STARTER FAILURE ALARM
Status input and motor current are monitored when the 469 initiates a trip. If the
starter status contacts do not change state or motor current does not drop to zero
after the programmed time delay, an alarm occurs. The time delay should be slightly
longer than the breaker or contactor operating time. If an alarm occurs and
"Breaker" was chosen as the starter type, the alarm will be Breaker Failure. If
"Contactor" 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. The
setpoint is seen only if the
SUPERVISION OF TRIP COIL
• If "52 Closed" is selected, the trip coil supervision circuitry monitors the trip coil
circuit for continuity any time 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 monitors 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 indicate Trip Coil Supervision.
E11
TRIP COIL
SUPERVISION
F11
E2
1 TRIP
CONTACT
F1
52a
TRIP
COIL
TRIP COIL CLOSED SUPERVISION
"52 Closed"
808727A2.CDR
FIGURE 5–18: Trip Coil Supervision
http://www.GEindustrial.com/multilin
STARTER FAILURE
Range: Off, Latched, Unlatched
Range: Breaker, Contactor
Range: Alarm, Alarm & Auxiliary2,
Range: 10 to 1000 ms in steps of 10
Range: Disabled, 52 Closed, 52 Open/
Range: On, Off
is set to "Latched" or "Unlatched", then the Starter
STARTER TYPE
E11
TRIP COIL
SUPERVISION
F11
E2
1 TRIP
CONTACT
F1
TRIP COIL
52a
OPEN/CLOSED
SUPERVISION
"52 Open/Closed"
TRIP
COIL
WITH MULTIPLE
BREAKER AUX
CONTACTS
52a
S11 Monitoring
Alarm & Aux2 & Aux3,
Alarm & Auxiliary3, Auxiliary2,
Aux2 & Aux3, Auxiliary3
Closed
is "Breaker".
TRIP COIL E11
SUPERVISION
F11
E2
1 TRIP
CONTACT
F1
52a
TRIP
COIL
TRIP COIL OPEN/CLOSED SUPERVISION
"52 Open/Closed"
VALUE OF RESISTOR 'R'
SUPPLY
OHMS WATTS
48 VDC
10 K 2
125 VDC
25 K 5
250 VDC
50 K 5
GE Multilin