Power-fail-signal connection – BECKHOFF CX1100-09xx UPS User Manual
Page 13
Product overview
Embedded PC
11
Power-Fail-Signal Connection
The UPS modules can also be used to supply other bus couplers. To use the UPS module with the bus coupler the
power supply has to be connected with the UPS. The power supply for the bus terminals has to be connected
seperaty. This depends on the terminal bus load. The Power-Fail connection should be connected to a digital input
terminal. (see picture below)
In case of power failure the UPS module rises the POWER-FAIL signal. The PLC program reads the input via the
terminal bus and can shutdown the application. In this mode the control of the UPS module is controlled by the torque
switch at the front side of the module.