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Can we verify external wiring correctness to relay contacts using P127 relay
Yes, we can achieve this using "MAINTENANCE MODE".
MAINTENANCE MODE in P127 relay is used to verify the external wiring to the relay output contacts. To do this, it is sufficient to assign a 1 to any of the required output contacts, this will close the contact and the wiring continuity could be verified.
The selection of the maintenance mode is possible by logic input, control command (rear or front port), or by front display. The end of maintenance mode is done by logic input, by control command or on the front display time out ( 5 minutes) and by turning off the power supply
Note - When activating this menu (YES), the Alarm led will start flashing and an alarm message will appear "MAINTENANCE MODE". In this case, all output contacts are blocked, no operation will take place on these contacts even if a protection threshold associated to one of these output contacts is exceeded.
MAINTENANCE MODE in P127 relay is used to verify the external wiring to the relay output contacts. To do this, it is sufficient to assign a 1 to any of the required output contacts, this will close the contact and the wiring continuity could be verified.
The selection of the maintenance mode is possible by logic input, control command (rear or front port), or by front display. The end of maintenance mode is done by logic input, by control command or on the front display time out ( 5 minutes) and by turning off the power supply
Note - When activating this menu (YES), the Alarm led will start flashing and an alarm message will appear "MAINTENANCE MODE". In this case, all output contacts are blocked, no operation will take place on these contacts even if a protection threshold associated to one of these output contacts is exceeded.
Released for:Schneider Electric India
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