Connection via digital inputs and outputs

For devices without a USB connection, a digital output signal (P FAIL) of the UPS can be monitored. In the event of a power failure, a power fail signal is sent by the UPS. This signal can be wired to a digital input and monitored in the PLC.

Connection via digital inputs and outputs 1:Fig.16: Connection example via digital I/O with a C6015 Industrial PC.

P FAIL

In the case of Beckhoff Industrial PCs, the P-FAIL output of the UPS can be connected to the PC_ON input of an industrial PC. In the event of a power failure, the P-FAIL output is set to 24 V. 24 V are thus applied to the PC_ON input of the industrial PC and the industrial PC is shut down properly.

UPS EN

The Power Status output of an industrial PC can be connected to the UPS-EN input of the UPS to switch off the U1out and U2out outputs of the UPS in the event of a desired PC shutdown. After the industrial PC is shut down, the Power Status output is switched from 24 V to 0 V. This falling edge signals the UPS to immediately switch off the U1out and U2out outputs.

Similarly, any PLC output can be connected to a UPS-EN input, controlled from the PLC, and used for non-Beckhoff PCs or controllers to switch off the UPS.