YASKAWA JUSP-MD D01A Series User Manual page 10

 Wiring
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• Be sure to wire correctly and securely.
Failure to observe this caution may result in motor overrun, injury, or malfunction.
• Do not connect a commercial power supply to the U, V, or W terminals for the servomotor connec-
tion.
Failure to observe this caution may result in injury or fire.
• Securely connect the main circuit terminals.
Failure to observe this caution may result in fire.
• Do not bundle or run the main circuit cables for the multi-winding drive unit, SERVOPACKs, or con-
verters together with the I/O signal cables or the encoder cables in the same duct. Keep them sep-
arated by at least 30 cm.
Failure to do so may result in malfunction.
• Use shielded twisted-pair wires or multi-core shielded twisted-pair wires for I/O signal cables and
encoder cables.
• Use the bus bars that are included with the converter, and connect the P and N terminals on the
SERVOPACK and converter securely.
• The maximum wiring length is 3 m for I/O signal cables, 50 m for servomotor main circuit cables
and encoder cables, and 10 m for the control power supply cables (+24 V and 0 V).
• Be sure to observe the following precautions when wiring the main circuit terminals and connectors
on a multi-winding drive unit, SERVOPACK, or converter.
• Do not turn ON the power to a multi-winding drive unit, SERVOPACK, or converter until all wiring,
including the wiring to the main circuit terminals, has been completed.
• Remove detachable main circuit terminals from the multi-winding drive unit, SERVOPACK, and con-
verter prior to wiring.
• Insert only one power line per opening in the main circuit terminals.
• Make sure that no part of the core wire comes into contact with (i.e., short-circuits) adjacent wires.
• Install a battery at either the host controller or the multi-winding drive unit but not both.
It is dangerous to install batteries at both ends simultaneously, because that sets up a loop circuit between the
batteries.
• Always use the specified power supply voltage.
An incorrect voltage may result in fire or malfunction.
• Always use the correct polarity (P and N) between the SERVOPACK and converter.
Incorrect polarity may cause ruptures or damage.
• Take appropriate measures to ensure that the input power supply is supplied within the specified
voltage fluctuation range. Be particularly careful in places where the power supply is unstable.
An incorrect power supply may result in damage to the product.
• Install external breakers or other safety devices against short-circuiting in external wiring.
Failure to observe this caution may result in fire.
• Take appropriate and sufficient countermeasures for each form of potential interference when
installing systems in the following locations.
• Locations subject to static electricity or other forms of noise
• Locations subject to strong electromagnetic fields and magnetic fields
• Locations subject to possible exposure to radioactivity
• Locations close to power supplies
Failure to observe this caution may result in damage to the product.
• Do not reverse the polarity of the battery when connecting it.
Failure to observe this caution may damage the battery, multi-winding drive unit, or servomotor, or cause an
explosion.
• Wiring or inspection must be performed by a technical expert.
• Use a 24-VDC control power supply with double insulation or reinforced insulation.
CAUTION