Digital Inputs/Outputs if Used as Inputs

* Due to the direct connection to the output, the demagnetizing varistor is also effective at the input (see figure) above. This is why the difference between UPx and the input signal may not exceed the clamp voltage of the varistor. The varistor limits the voltage to approx. 36 V. Following this, the input voltage must range from - 12 V to + 30 V if UPx = 24 V and from - 6 V to + 30 V if UPx = 30 V.