Mitsubishi Electric NZ2MF2S1-32D User Manual page 110

■Action
Before turning on or off the external power supply, check that the rise time of the external power supply is 10ms or more.
Then, install a switch (SW1) to the primary side of the external power supply.
Primary side
External power supply
SW1
When installing the switch to the secondary side, connect a capacitor and resistor, and increase the rise time (10ms or more).
• Sink output
Y0
R1
CTL+
C1
COM-
24VDC
• Source output
Y0
R1
CTL-
C1
COM+
24VDC
R1: Several tens of ohms
Power capacity  (External power supply current
C1: Several hundreds of microfarads 50V
(Example)
R1 = 40, C1 = 300F
Time constant is calculated as shown below.
- 6
C1  R1 = 300  10
-3
= 12  10
s
= 12ms
*1 For the current consumption of the external power supply for the module, refer to the manuals.
*2 Select the power capacity of resistor to be 3 to 5 times as large as the actual power consumption.
11 TROUBLESHOOTING
108
11.4 Examples of Troubles with the I/O Module
Secondary side
Output module
Load
SW
Load
SW
 40
*1 2
 Resistance value  (3 to 5)
)
*2