Demand - GE 469 Instruction Manual

Motor management relay
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CHAPTER 5: SETTINGS

5.12.3 Demand

CURRENT
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
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
is "Breaker".
STARTER TYPE
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
PATH: SETTINGS
S11 MONITORING
[
MESSAGE
MESSAGE
MESSAGE
SUPERVISION OF TRIP COIL
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
FIGURE 5–18: Trip Coil Supervision
CURRENT DEMAND
CURRENT DEMAND
PERIOD: 15 min.
CURRENT DEMAND
ALARM: Off
ASSIGN ALARM
RELAYS:
CURRENT DEMAND
LIMIT: 100 A
settings is seen only if the
E11
TRIP COIL
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
125 VDC
25 K
250 VDC
50 K
Range: 5 to 90 min. in steps of 1
Range: Off, Latched, Unlatched
Range: Alarm, Alarm & Auxiliary2,
Alarm & Aux2 & Aux3, Alarm &
Auxiliary3, Auxiliary2, Aux2 &
Aux3, Auxiliary3
Range: 10 to 100000 A in steps of 1
2
5
5
5–87

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