YASKAWA SGD7S Product Manual page 16

 Wait for at least six minutes after turning OFF the power supply (with a SERVOPACK for a 100-
VAC input, wait for at least nine minutes) and then make sure that the CHARGE indicator is not
lit before starting wiring or inspection work. Do not touch the power supply terminals while the
CHARGE lamp is lit after turning OFF the power supply because high voltage may still remain in
the SERVOPACK.
There is a risk of electric shock.
 Observe the precautions and instructions for wiring and trial operation precisely as described in
this document.
Failures caused by incorrect wiring or incorrect voltage application in the brake circuit may cause
the SERVOPACK to fail, damage the equipment, or cause an accident resulting in death or injury.
 Check the wiring to be sure it has been performed correctly.
Connectors and pin layouts are sometimes different for different models. 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 terminals 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 Sig-
nal 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 termi-
nals, has been completed.
• If a connector is used for the main circuit terminals, remove the main circuit connector from the SER-
VOPACK 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., whiskers) does not come into con-
tact with adjacent wires.
 Install molded-case circuit breakers and other safety measures to provide protection against
short circuits in external wiring.
There is a risk of fire or failure.
 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-current lines (e.g., the I/O Sig-
nal 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-cur-
rent lines.
 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 batteries, 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.
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CAUTION
NOTICE