An earth ground spade lug (0.187 in. [4.75 mm]) is provided on the base of the FX30E/FX60E for connection to earth ground. For maximum protection from electrostatic discharge or other forms of electromagnetic interference, connect the supplied earth grounding wire to this lug and a nearby earth ground (Figure 1). Keep this wire as short as possible.
Power is provided for the FX30E/FX60E plug-in accessory modules through the 30-pin accessory connectors; however, connect the earth ground spade lug of each accessory module to ground in the same manner.