Mitsubishi Electric NZ2MF2S1-32D User Manual page 111

A load momentarily turns on from off when the system is powered off
■Cause
When an inductive load is connected, [2] Load may turn on from off due to a sneak current of back EMF at [1] Shutoff.
Output module
+ Back electromotive force - [3]
Sink output
Y0
ON
Y1
OFF
COM-
CTL+
Output module
- Back electromotive force + [3]
Source output
Y0
ON
Y1
OFF
COM+
CTL-
Load
[2]
Load
[1] Shut off
Load
[2]
Load
[1] Shut off
11 TROUBLESHOOTING
11.4 Examples of Troubles with the I/O Module
11
109