Renishaw OMM-2 Guia De Inicio Rapido página 19

Wiring diagram – OSI with OMM-2 (with output groupings shown)
Control connections
A B
CAUTIONS:
The power supply 0 V should be terminated at the machine ground ("star point"). If a
negative supply is used, then the negative output must be fused.
The dc supply to this equipment must be derived from a source which is approved to
1-15
BS EN 60950-1:2006+A2:2013 (IEC 60950-1:2005+A2:2013).