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5.2 Wiring of Power Supply
5.2.1 Wiring of Power Supply
Power supply wiring for the unit
Use the power supply cable (Part number: AFPG805) that comes with the unit to connect the power
supply.
Brown: 24 V DC
Blue: 0 V
Green: Function earth
Power supply wire
To minimize adverse effects from noise, twist the brown and blue wires of the power supply cable.
Power supply type
- To protect the system against erroneous voltage from the power supply line, use an insulated power
supply with an internal protective circuit.
- The regulator on the unit is a non-insulated type.
- If using a power supply device without an internal protective circuit, always make sure power is
supplied to the unit through a protective element such as a fuse.
Power supply voltage
Wiring system
- Isolate the wiring systems to the control unit, input/output devices, and mechanical power apparatus.
Measures regarding power supply sequence
- The power supply sequence should be set up so that power to the control unit is turned off before the
input/output power supplies.
- If the input/output power supplies are turned off before the power to the control unit, the unit will detect
the input fluctuations and may begin an unscheduled operation.
- Be sure to supply power to the control unit and an expansion unit from the same power supply, and turn
the power on and off simultaneously for both.
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