Section II. Installation &Wiring
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2
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Digital input terminal
It needs to employ shielded cable generally, with wiring distance of no longer than 20
meters. When valid driving is adopted, necessary filtering measures shall be taken to prevent
the interference to the power supply.
It is recommended to use the contact control mode.
a)
X terminal wiring method (The drain wiring mode)
Fig.2-5.3 Drain wiring mode
This is one of the most commonly used connection mode. If you use an external power
supply, J9 jumper must be removed, and connect the external positive power supply to SP,while
negative power supply to X port.
b)X terminal wiring method (The source wiring mode)
Fig. 2-5.4 Source wiring mode
