Mitsubishi Electric NZ2GN2S1-16D User Manual page 207

■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 Secondary
side side
External power
supply
SW1 Programmable
controller
When installing the switch to the secondary side, connect a capacitor and resistor, and increase the rise time (10ms or more).
• Sink output
Y0
Load
R1
CTL+
SW
C1
COM-
24V
• Source output
Y0
Load
R1
CTL-
SW
C1
COM+
24V
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  40
-3
= 12  10
s
= 12ms
*1 For details on the current consumption of the external power supply for output part to be used, refer to the performance specifications.
*2 Select the power capacity of resistor to be 3 to 5 times as large as the actual power consumption.
*1 2
 Resistance value  (3 to 5)
)
11.5 Examples of Troubles with the I/O Module
*2
11 TROUBLESHOOTING
11
205