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ELECTRICAL INSTALLATION
NOTE:
NOTE
NOTE:
NOTE
NOTE:
NOTE
Output Relay 1 (TRIP)
896731.cdr
2–18
To monitor the trip coil circuit integrity, use the relay terminals A2 and B3 to connect the
Trip coil, and provide a jumper between terminals A2 and A3 (optional voltage).
To monitor the close coil circuit integrity, use the relay terminals B4 and A4 to connect the
Close coil, and provide a jumper between terminals B4 and B5 (optional voltage).
Figure 21: Trip and Close Coil circuits with no voltage monitoring
Output Relay 1 (TRIP)
A2
B3
V
A3
896730.cdr
All AUX contacts are shown when the breaker is open.
Figure 22: Trip and Close Coil circuits with voltage monitoring
A2
B3
V
A3
52a
contact
When SWITCHING DEVICE is selected as CONTACTOR
Output Relays:
•
Not Used:
–
Output Relay 1
–
Output Relay 2
•
For special purpose:
–
Output Relay 3 (self-reset): Start Inhibit
–
Output Relay 4 (fail-safe, non-fail-safe): Trip
DC +
Output Relay 2 (CLOSE)
52a
contact
Trip
Coil
DC -
DC +
Output Relay 2 (CLOSE)
External
jumper
Trip
Coil
DC -
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 2: INSTALLATION
B4
A4
V
B5
52b
contact
DC +
B4
A4
V
B5
52b
contact
Close
Coil
DC -
DC +
Close
Coil
DC -
External
jumper
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