Wiring
‑83‑
● Use a grounding cable of the same cross‑sectional area as the main circuit cable. If
the cross‑sectional area of the main circuit cable is less than 1.6 mm
2
, use a
grounding cable with a cross‑sectional area of 2.0 mm
2
.
● Do not power on the servo drive if terminal screws or cables are loose. Failure to
comply may lead to a fire.
3.5.2 Main Circuit Wiring Requirements
Servo drive power input cables and motor cables may generate strong
electromagnetic interference. To prevent the electromagnetic interference incurred
by long‑distance parallel routing and coupling between disturbing cables and control
cables, keep a clearance of at least 30 cm between main circuit cables and signal
cables. Main circuit cables include the RST cable, UVW cable, DC bus, and braking
cable. Signal cables include the I/O signal cable, communication cable, and encoder
cable.
Cable ducts must be connected and grounded properly. Aluminum cable ducts can be
used to ensure equipotentiality of the device. The filter, servo drive, and motor must
be properly connected to systems (machines or devices), with spraying protection
applied at the installation part and the conductive metal kept in full contact.
Figure 3‑19 Cable layout
Wiring requirements
The wiring mode compliant with the Low Voltage Directive is supported.
● Terminals P⊕, C, and NΘ are used to connect optional parts. Do not connect these
terminals to an AC power supply.
● To protect the main circuit, separate and cover the surface that may come into
contact with the main circuit.
● Do not allow unwanted objects to enter the wiring part of the terminal block.
● Do not solder the twisted conductors.
● The tightening torque may vary with terminals. Tighten terminal screws with the
specified tightening torque. You can use a torque screwdriver, torque ratchet, or
torque wrench to tighten terminal screws.
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