The original paper manual is deprecated. You can obtain the patched PDF (Revision 3.2, dated July 2023) from:

The is designed for easy "plug-and-play" installation on a standard DIN rail.

Use a multimeter to verify that the voltage is within the device's rated range. Significant fluctuations can cause "nuisance tripping". Phase Order:

Swap any two input wires; if the red LED activates, the sensor is working correctly.