YASKAWA Sigma-V Series User Manual

Also see for S-V Series: User manual Safety precautions User manual User manual

Contents

YASKAWA Sigma-V Series User Manual Manual pdf 45 page image

4 Wiring and Connection4-24.1 Precautions for WiringCAUTION• 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 ser-vomotor connection.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, SER-VOPACK, or converter together with the I/O signal cables or the encoder cablesin the same duct. Keep all of the main circuit cables separated from the I/O signalcables and the encoder cables with a gap of 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/Osignal cables and encoder cables.• Use the bus bars that are included with the converter, and connect the P and Nterminals on the SERVOPACK and converter securely.• The maximum wiring length is 3 m for I/O signal cables, 50 m for servomotor maincircuit cables and encoder cables, and 10 m for the control power supply cablesof the multi-winding drive units and the control power supply cables (+24 V and 0V) of the converters.• Do not touch the power terminals while the main circuit’s capacitor is discharging,because high voltage may still remain in the multi-winding drive unit, SERVO-PACKs, or converters. For details on the charging time of the main circuit’s capac-itor, refer to 4.2 Discharging Time of the Main Circuit’s Capacitor.Before starting to do wiring or inspections, wait for the CHARGE lamps on the SERVO-PACK and converter to turn OFF and then make sure the power has been completely dis-charged by using a tester to measure the voltage between the DC power terminals (P andN).• Be sure to observe the following precautions when wiring the main circuit termi-nals 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 converteruntil all wiring, including the wiring to the main circuit terminals, has been completed.• Remove detachable main circuit terminals from the multi-winding drive unit, SERVO-PACKs, and converters 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 notboth.It is dangerous to install batteries at both ends simultaneously, because that sets up a loopcircuit 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) for the SERVOPACK and converter.Incorrect polarity may cause ruptures or damage.• Take appropriate measures to ensure that the input power supply is suppliedwithin the specified voltage fluctuation range. Be particularly careful in placeswhere the power supply is unstable.An incorrect power supply may result in damage to the product.