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CHAPTER 6: SETPOINTS
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
U/POWER TRIP DLY
Range: 0.1 to 60.0 s in steps of 0.1 s
Default: 0.1 s
This setting specifies a time delay for the trip stage. The time delay should be long
enough to overcome any short lowering of the load (e.g. during system faults).
OUTPUT RELAY 4 to 6 / OUTPUT RELAY 5 to 6
Range: Do Not Operate, Operate
Default: Do Not Operate
Any assignable output relay can be selected to operate upon underpower operation.
When the SWITCHING DEVICE is selected as BREAKER, the assignable output relays will
be Output Relay 4 to 6. When the SWITCHING DEVICE is selected as CONTACTOR, the
assignable output relays will be Output Relay 5 to 6.
BLOCK 1 to 3
Range: Off, Contact Input 1 to 10, Virtual Input 1 to 32, Remote Input 1 to 32, Logic
Element 1 to 16
Default: Off
There are three blocking inputs provided for the underpower feature. When any of the
selected blocking inputs is on, the underpower function is blocked.
S3 PROTECTION
6–103
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