Yaskawa MP2000 Series I/O Module User Manual - Manual (Page 131)

5.2 Specifications of DO-01 Module Connections
5.2.4 DO-01 Module Connections
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5
DO-01 Module
ΠIf you connect an inductive load, connect a diode parallel to the load to
absorb counter electromotive force.
ΠBackward voltage: 10 times the load voltage or greater
ΠForward current: Load current or greater
OUT
diode
Source circuit
–
+
COM
Inductive
load