Insulation alarm relay (Ins. Al. Relay)

You can set the insulation alarm relay mode depending on the status of insulation.

To access the setting, select Menu > Settings > I/O Config.

• Parameter: Relay

• Allowed values: FS / Std.

• Default: FS

When the insulation alarm relay is configured in failsafe (FS) mode:

• The insulation alarm relay is activated, that is, energized, in the following case:

  • No insulation fault is detected.

• The insulation alarm relay is deactivated, that is, de-energized, in the following cases:

  • Insulation fault is detected.

  • The product is inoperative (detected by auto-test).

  • The auxiliary power supply is lost.

  • When you trigger an auto-test

When the insulation alarm relay is configured in standard (Std.) mode:

• The insulation alarm relay is activated, that is, energized, in the following cases:

  • Insulation fault is detected.

  • The product is inoperative (detected by auto-test).

  • When you trigger an auto-test

• The insulation alarm relay is deactivated, that is, de-energized, in the following cases:

  • No insulation fault is detected.

  • Insulation fault is detected and acknowledged (if Menu > Settings > I/O Config > Ack. Al. Relay is set to ON).

  • The auxiliary power supply is lost.