Wiring The Power Supply; Common Precautions - Panasonic GM1 Series Reference Manual

5.1 Wiring the Power Supply

5.1 Wiring the Power Supply

5.1.1 Common Precautions

■
Selection of a power supply
● Use a low noise power supply.
● The inherent noise resistance is sufficient for the noise superimposed on the power wires,
however, the noise can be attenuated further by using the isolation transformer / insulated
power supply.
■
Isolation of power supply systems
Wiring to the units, I/O devices, and other power devices should have separate wiring systems.
■
Power supply sequence
● Have the power supply sequence such that the power supply of the Controller turns OFF
before the power supply for input and output.
● If the I/O power supplies are turned OFF before the power to the Controller, the GM1
Controller will detect the input fluctuations and may begin an unscheduled operation.
5-2 WUME-GM1H-01