7EN02-0421-00

Insulation alarm relay acknowledgement (Ack Al. Relay)

You can set the insulation alarm relay acknowledgment as per the usage of loads connected to the relay.

When the relays are connected to loads (for example, horns or lamps), it is advised to turn off these external signaling devices before the insulation level rises back to a level above the setup thresholds. This can be done by pressing the acknowledge button while in insulation alarm state.

In certain system configurations, it is required to prevent this type acknowledgement and only retrigger the relays when the insulation level rises above the setup thresholds. This is done by changing the corresponding parameter.

The allowed values for this parameter are ON and OFF. The default value is ON.

To set the acknowledge alarm relay ON, select Menu > Settings > I/O Config > Ack Al.Relay > ON.

To set the acknowledge alarm relay OFF, select Menu > Settings > I/O Config > Ack Al.Relay > OFF.

When the device detects an insulation fault, the insulation alarm relay is triggered.

  • When the value is set to ON and on acknowledgement of the alarm, the relay returns back to its initial position.

  • When the value is set to OFF and on acknowledgement of the alarm, the relay does not returns back to its initial position.

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