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9. Mounting
9-2
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.
Note) Weld joints of metallic conduits and ground the welded metallic conduits. (Grounding in accordance with local
legal requirements)
Figure. 9.1 Wire Separation by Conduits or Ducts
Caution
Use an external power supply which the over current protection character is as below
Figure. 9.2 Over current protection character
300 mm or more
Output voltage
Load current
Power cable
Other signal cables
Wiring cable (shielded wire) of
EH-PT4 module
Metallic conduit
Wiring cable (shielded wire) of
EH-PT4 module
Other signal cables
Over current detection