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6
6. EXTERNAL WIRING
Precautionary notes when wiring as well as the I/O interface are
described below.
6.1 Precautionary notes when wiring
This section describes the precautionary notes for the wiring process
between the D75P2 and outside (drive unit).
(1) Length of connection cable between the D75P2 and drive unit
(a) When an open collector is used, the maximum cable length is
2 m (6.56 ft.). However, this value might change according to
the drive unit specifications.
Perform wiring after verifying the specifications for the drive
unit to be used.
(b) When a differential driver is used, the maximum cable length is
10 m (32.81 ft.).
To extend the distance between the D75P2 and drive unit, use
a differential driver.
(2) Wiring for I/O signals
(a) Avoid bundling with or installing near the proximity of power
wires or main circuit wires.
(b) When installing near the proximity of power wires or main
circuit wires, use separate ducts or piping.
(c) If bundling cannot be avoided, use a batch shielded cable and
ground it on the programmable controller side.
(d) When wiring is done via piping, be sure to ground the pipe.
(e) If the connection cable is long or the main circuit wiring is in
the proximity, operation error may occur due to noise.