Wiring
‑56‑
● The specification and installation of external cables must comply with applicable
local regulations.
● Observe the following requirements when the servo drive is used on a vertical axis.
—— Set the safety device properly to prevent the workpiece from falling upon
warning or overtravel.
—— Ensure the positive/negative polarity of the 24 V power supply is correct.
Otherwise, the axis may fall and cause personal injury or equipment damage.
● Observe the following requirements during wiring of the power supply and main
circuit:
—— When the main circuit terminal is a connector, remove the connector from the
servo drive before wiring.
—— Insert one cable into one cable terminal of the connector. Do not insert
multiple cables into one cable terminal.
—— When inserting cables, take enough care to prevent the cable conductor burrs
from being short circuited to the neighboring cable.
—— Insulate the connecting part of the power supply terminals to prevent electric
shock.
—— Do not connect a 220 V servo drive to a 380 V power supply directly.
—— Install safety devices such as a circuit breaker to prevent short circuit in
external circuits. Failure to comply may result in a fire.
—— Cut off the main circuit power supply and switch off the S‑ON signal after an
alarm signal is detected.
● Connect the servo drive to the motor directly. Do not use an electromagnetic
contactor during wiring. Failure to comply may result in equipment fault.
● Do not put heavy objects onto cables or pull cables with excessive force. Failure to
comply may result in cable damage, leading to an electric shock.
● When connecting DO terminals to relays, ensure the polarity of the flywheel diode
is correct. Wrong polarity will result in equipment damage or signal output failure.
● Keep a distance of at least 30 cm between main circuit cables and I/O signal
cables/encoder cables. Failure to comply may result in equipment malfunction.
● Use twisted pairs or multi‑conductor shielded twisted pairs as the I/O signal cable
or encoder cable. Failure to comply may result in equipment malfunction.
● The maximum wiring lengths of the I/O signal cable and the encoder cable are 3 m
and 20 m respectively.
● Use a power supply filter to reduce the electromagnetic interference on electronic
devices surrounding the servo drive.
● Take proper shielding measures in the following locations to prevent equipment
damage:
—— Locations with interference caused by static electricity
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