Yaskawa Sigma-5 User Manual: Design and Maintenance - Linear Motors MECHATROLINK-III Communications Reference - Manual (Page 10)

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Wiring
CAUTION
• Be sure to wire correctly and securely.
Failure to observe this caution may result in motor overrun, injury, or malfunction.
• Securely tighten the cable connector screws and securing mechanism.
If the connector screws and securing mechanism are not secure, they may loosen during operation.
• Use cables with a radius, heat resistance, and flexibility suitable for the system.
• If the SERVOPACK malfunctions, turn OFF the main circuit’s power supply of the SERVOPACK.
The continuous flow of a large current may cause fire.
• Use a noise filter to minimize the effects of electromagnetic damage.
Failure to observe this caution may result in electromagnetic damage to electronic devices used near the SER-
VOPACK.
• 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 together with the I/O signal cables or the linear scale
connection cables in the same duct. Keep the main circuit cables separated from the I/O signal
cables and the linear scale connection cables with a gap of at least 30 cm.
Placing these cables too close to each other may result in malfunction.
• Use shielded twisted-pair cables or screened unshielded twisted-pair cables for I/O signal cables
and the linear scale connection cables.
• Make sure that the length of each cable is equal to or shorter than the maximum wiring length listed
here.
• I/O signal cables: 3 m
• Connection cables for linear servomotor main circuit: 20 m
• Connection cables for serial converter unit: 20 m
• Connection cables for linear scale: 15 m
• Connection cables for hall sensor: 15 m
• Control power supply cables for the SERVOPACK with a 400-V power supply (+24 V, 0 V):10 m
• Do not touch the power supply terminals while the CHARGE lamp is ON after turning power OFF
because high voltage may still remain in the SERVOPACK.
Make sure the charge indicator is OFF first before starting to do wiring or inspections.
• Be sure to observe the following precautions when wiring the SERVOPACK main circuit terminal blocks.
• Do not turn the SERVOPACK power ON until all wiring, including the main circuit terminal blocks, has
been completed.
• Remove detachable main circuit terminals from the SERVOPACK 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.
• Do not connect the SERVOPACK for 200 V directly to a voltage of 400 V.
The SERVOPACK will be destroyed.
• Always use the specified power supply voltage.
An incorrect voltage may result in fire or malfunction.
• Make sure that the polarity is correct.
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 equipment.
• 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 equipment.
• Wiring or inspection must be performed by a technical expert.
• Use a 24-VDC power supply with double insulation or reinforced insulation.