Yaskawa AC Servo Drive Rotary Servomotor Safety Precautions - Manual (Page 12)

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• Check the wiring to be sure it has been performed correctly.
Connectors and pin layouts are sometimes different for different mod-
els. Always confirm the pin layouts in technical documents for your
model before operation.
There is a risk of failure or malfunction.
• Connect wires to power supply terminals and motor connection termi-
nals securely with the specified methods and tightening torque.
Insufficient tightening may cause wires and terminal blocks to generate
heat due to faulty contact, possibly resulting in fire.
• Use shielded twisted-pair cables or screened unshielded multi-
twisted-pair cables for I/O Signal Cables and Encoder Cables.
• Observe the following precautions when wiring the SERVOPACK’s
main circuit terminals.
• Turn ON the power supply to the SERVOPACK only after all wiring,
including the main circuit terminals, has been completed.
• If a connector is used for the main circuit terminals, remove the main
circuit connector from the SERVOPACK before you wire it.
• Insert only one wire per insertion hole in the main circuit terminals.
• When you insert a wire, make sure that the conductor wire (e.g., whis-
kers) does not come into contact with adjacent wires.
NOTICE
• Whenever possible, use the Cables specified by Yaskawa.
If you use any other cables, confirm the rated current and application
environment of your model and use the wiring materials specified by
Yaskawa or equivalent materials.
• Securely tighten cable connector screws and lock mechanisms.
Insufficient tightening may result in cable connectors falling off during
operation.
• Do not bundle power lines (e.g., the Main Circuit Cable) and low-cur-
rent lines (e.g., the I/O Signal Cables or Encoder Cables) together or
run them through the same duct. If you do not place power lines and
low-current lines in separate ducts, separate them by at least 30 cm.
If the cables are too close to each other, malfunctions may occur due to
noise affecting the low-current lines.
• For a motor with a cooling fan, check the rotation direction of the cool-
ing fan after you wire the fan.
• Install a battery at either the host controller or on the Encoder Cable.
If you install batteries both at the host controller and on the Encoder
Cable at the same time, you will create a loop circuit between the batter-
ies, resulting in a risk of damage or burning.
• When connecting a battery, connect the polarity correctly.
There is a risk of battery rupture or encoder failure.
Continued from previous page.
CAUTION