UPS Shutdown definition

What makes the UPS job shutdown somewhat complex?

A UPS performs a shutdown to protect the batteries from deep discharge. In this state, the UPS is physically shut down and turned off. The timing of this action, or how the UPS responds to an action triggered by a scheduler or via UPS functions, varies even between models from the same manufacturer. In addition, each manufacturer uses its own battery-protection definitions. However, because the UPS has been physically turned off, counter-events cannot be configured.

Configuring UPS Shutdown

Shutdown time in seconds

Determines the duration the UPS remains operational before it shuts down automatically.

Restore time in seconds

When the main power supply is restored, the UPS waits for the preset value in seconds until it starts up again.

Type

With this setting the UPS will be turned off or turn on. Two different settings are possible:

1. The UPS switches off the outputs but remains in operational mode.
2. The UPS Shuts down completely and remains off until main power is restored.

How to Use the UPS Shutdown Job

This job cannot combine both settings at the same time. Depending on the desired operating mode, you will need at least two separate jobs.

For example, you could configure different jobs to perform the following sequence:

• Switch off outputs after 3 minutes.

• Shut down the UPS after 4 minutes.

• Turn on the UPS 2 minutes after main power is restored.

• Activate outputs 15 minutes later.

Note that the shutdown and restore times must be properly timed for both jobs. In this case, enter either “1” or “2” depending on the desired event.