Before powering on or off the load power supply, check that the time taken to power on the load power supply itself is 10ms or
more. Then, install a switch (SW1) to the primary side of the load power supply.
Load power supply
When installing the switch to the secondary side, connect a capacitor and resistor, and increase the time taken to power on
the load power supply (10ms or more).
• Sink output
• Source output
R1:Several tens of ohms
Power capacity (Load power supply current
C1:Several hundreds of microfarads 50V
R1 = 40, C1 = 300F
Time constant is calculated as shown below.
C1 R1 = 300 10
= 12 10
*1 For the current consumption of the load power supply for the output part, refer to the manuals.
*2 Select the power capacity of resistor to be 3 to 5 times as large as the actual power consumption.
11.6 Examples of Troubles with the I/O Module
Resistance value (3 to 5)