Installation and Wiring3-63.2 Wiring the Power Supply3.2.1 Precautions on Wiring• Perform wiring and placement of the cable so that there is no impression of external noiseon the cable and no induction.• This product conforms to EN61131-2 for the European EMC Directive 2014/30/EU. Theconformity conditions are as below.1) Use shielded wires for distribution cables.2) The GT unit should be grounded.3.2.2 Wiring the Power Supply Use twisted wiring for the power supplyIn order to minimize influence from noise, the wiring for the power supply should be twisted. Insulate the power supply inside a protective circuit• In order to protect the unit against abnormal voltage from the power supply line, the powersupply should be an insulated type, and should be enclosed within a protective circuit.• The unit has sufficient noise immunity against the noise generated on the power line.However, it is recommended to take measures for reducing noise such as using an isolatingtransformer before supplying the power. And it is recommended to take measures such asinstalling a ferrite core.• If a power supply device without an internal protective circuit is being used, power shouldalways be supplied to the GT series through a fuse or a similar protective device. Directlyapplying an abnormal voltage to the unit may cause the damage to the internal circuit. Keep the power supply voltage within the operating voltage rangeRated voltage Operating voltagerange24V DC 21.6 to 26.4V DC5V DC 4.5 to 5.5V DC Keep the power supply wiring separateWiring to the GT series, PLC, and other power equipment should have separate wiringsystems.