Configuring the UPS

This step shows how to configure the UPS in the Beckhoff UPS software. Two of the most important settings that affect the behavior of the UPS in the event of a power failure are:

Max. time on battery before critical alarm
and Turn UPS off wait time.

In the software, set the time after which the critical alarm should be triggered and the Industrial PC should be shut down in the event of a power failure.

In the next step, define the time after which the ups should switch off its supply outputs. Note that the industrial PC must be shut down properly within this period. Make sure that you do not set a value that is too low and that the set time covers the entire shutdown process.

Proceed as follows:

1. Start the UPS software and click Select.

2. Select Beckhoff USB UPS to configure the communication to the Industrial PC via USB.
Configuring the UPS 1:

3. Click Finish and in the main menu click Apply to start the UPS service.

4. The UPS service is running if the manufacturer and the communication type are displayed in the main menu.
Configuring the UPS 2:

5. Click on the Configure alarm button and define under Max. time on battery before critical alarm, after which the critical alarm should be triggered in the event of a power failure. The critical alarm is not triggered if the power supply returns within the set time.
Configuring the UPS 3:

6. Under Turn UPS off wait time, determine the time after which the UPS should switch off its outputs. Define a time period in which the industrial PC has sufficient time to shut down properly. Always plan for a sufficient headroom.
Configuring the UPS 4:

The outputs of the UPS are irrevocably switched off after the delay time has elapsed, even if the power supply returns.

In this example, in the event of a power failure, the critical alarm is triggered after two minutes and thereafter the Industrial PC is shutting down. As soon as the critical alarm is triggered, the set countdown of 180 seconds is started. The shutdown of the Industrial PC must be successfully completed within this time (180 seconds), since the outputs of the UPS are switched off directly after the 180 seconds have elapsed.