Electromagnetic compatibility

The G123-814 emits emissions well below the levels required for CE marking testing.

However, the cable connecting the valve coil should be shielded to ensure that no interfering radiation is

emitted.

Connect both ends of the shielded cable to chassis earth. Use terminals 10 and 14 on G123-814.

Immunity to external interference radiation depends on careful wiring techniques.

The recognised method is to use shielded cables for all connections, the

The accepted method is to use shielded cable for all connections and to radially terminate

the cable shield with a suitable grounded cable gland where it enters the industrial steel enclosure.

If this is not possible, chassis ground screw terminals are available on the G123-814.

The length of bare wire should be minimised. Connect the shield at each end of the cable to chassis

ground.

Allow sufficient length of cable

so that the wires remain connected when the circuit card is removed from the housing. 

This allows the circuitry to be checked while the circuit card is still connected and operational.

For cables connected to the outside of the housing as well as for

cables connected to the adjacent DIN rail unit, an additional 100 mm is sufficient.

The cable to the valve coil carries 1 Amp and should be sized accordingly.

Cables with a conductor size of 0.2 mm2 are normally rated at 1 Amp and are suitable for cable lengths

up to 5 metres.