Mitsubishi Electric MELSEC iQ-R Series User Manual page 96

2.
Provide another current path by connecting a diode across positive and negative of the load power supply. When taking
the action described in Example 1 at a time, connect a diode parallel to C1 and R1.
Safety remote I/O module
Source + Source output
ON
OFF
+24V (L PW)
Safety remote I/O module
Sink + Source output
ON
ON
OFF
OFF
+24V (L PW)
D1:
Reverse voltage VR (VRM)
Forward current IF (IFM)
*1 Approximately 10 times as large as the rated voltage in the specifications
Example: 24VDC  Approximately 200V
*2 Twice as much as the maximum load current in the specifications or more
Example: 8A  16A or higher
10 TROUBLESHOOTING
94
10.6 Fault Examples with the Safety Remote I/O Module
- Back EMF+
[3]
Load
Y0
24G (L PW)
[2] Load
Y1
24G (L PW)
D1
C1 R1
24G (L PW)
Ex.1
[3]
- Back EMF+
Load
Y0+
Y0-
[2]
Load
Y1+
Y1-
D1
C1 R1
24G (L PW)
Ex.1
*1
*2
[1]
Shut off
[1] Shut off