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2-1-2 Wiring rules for Servo Drives
y The wire material must rule by “Wiring Specifications.”
y Cable Length: CN1 I/O cable : Less than 3m.
Motor Encoder cable: Less than 20m.
Select the shortest distance for wire connection.
y Don’t connect to un-programmable I/O contacts.
y Motor output terminal (U,V,W) must be connected correctly. Otherwise it might defect the servo motor.
y Shielded cable must be connected to FG terminal.
y Don’t install the capacitor or Noise Filter at the output terminal of servo drive.
y At the control-output-signal relay, the direction of surge absorb diode must be correctly connected, otherwise it
can not output signal, and cause the protect loop of emergency-stop abnormal.
y Please do these below to avoid the wrong operation from noise:
Please install devices such as the insulated transformer and noise filter at the input power.
Keep more than 30 cm between Power wire (power cable or motor cable…etc.) and signal cable, do not
install them in the same conduit.
y Please set “emergency-stop switch” to prevent abnormal operation.
y After wiring, check the connection-situation of each joint (ex: loose soldering, soldering point short, terminal order
incorrect…etc.). Tighten the joints to confirm if surly connected to the servo drive, if the screw is tight. There can
not be the situations such as cable break, cable pulled and dragged, or be heavily pressed.
* Especially pay attention to the polarity between servo motor wiring and encoder.
y It is not necessary to add extra regeneration resistance under general situation. When application required drastic
deceleration in a short period and over voltage fault occurred, please connect to distributor or manufacturer for
install external regeneration resistor.
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