Mitsubishi Electric NZ2GN2B1-32D User Manual page 102

■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-
24V
• Source output
Y0
R1
CTL-
C1
COM+
24V
R1:Several tens of ohms
Power capacity ≥ (External power supply current
C1:Several hundreds of microfarads 50V
(Example)
R1 = 40Ω, C1 = 300μF
Time constant is calculated as shown below.
- 6
C1 × R1 = 300 × 10
-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.
11 TROUBLESHOOTING
100
11.5 Examples of Troubles with the I/O Module
Secondary
side
Programmable
controller
Load
SW
Load
SW
× 40
*1 2
× Resistance value × (3 to 5)
)
*2