Precautions On External Wiring - Hitachi HIDIC EH-150 EH-PT4 Applications Manual

9.4 Precautions on External Wiring

Because the external wiring of the EH-PT4 handles fine signals, be sure to use a shielded wire to
suppress the influence of external noise and place the wire separately from the power line and
signal line of different voltage.
300 mm or more
Note) Weld joints of metallic conduits and ground the welded metallic conduits. (Grounding in accordance with local
legal requirements)
Caution
Use an external power supply which the over current protection character is as below
Wiring cable (shielded wire) of
EH-PT4 module
Other signal cables
Other signal cables
Power cable
Figure. 9.1 Wire Separation by Conduits or Ducts
Load current
Figure. 9.2 Over current protection character
Over current detection
9-2
9. Mounting
Wiring cable (shielded wire) of
EH-PT4 module
Metallic conduit