Panasonic FP7 Series User Manual page 78

4.2 Wiring the Power Supply
● The point of grounding should be as close to the PLC as possible. The ground wire should
be as short as possible.
● Sharing the ground with another device may have an adverse effect. Therefore, be sure that
grounding is dedicated.
● Earth terminals for an AC power supply unit should be grounded at a grounding resistance of
100 Ω or less.
● When 24 V DC is directly supplied to the CPU unit, ground the attached functional earth wire
(green).
4-12 WUME-FP7CPUH-09