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Sigma II User's Manual
Safety Precautions
The following precautions are for checking products upon delivery, installation, wiring,
operation, maintenance and inspections.
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Checking Products upon Delivery
• Always use the servomotor and servo amplifier in one of the specified combinations.
Not doing so may cause fire or malfunction.
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Installation
• Never use the products in an environment subject to water, corrosive gases, inflammable gases, or
combustibles.
Doing so may result in electric shock or fire.
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Wiring
• Connect the ground terminal to a class 3 ground (100Ω Ω or less).
Improper grounding may result in electric shock or fire.
• Required for 7.5kW amplifiers: use of Yaskawa kit Number XXX for wiring the power input and
output terminals, or equivalent UL listed closed-loop ring terminals designed to accept 4 AWG wires.
• Do not connect a three-phase power supply to the U, V, or W output terminals.
Doing so may result in injury or fire.
• Securely fasten the power supply terminal screws and motor output terminal screws.
Not doing so may result in fire.
CAUTION
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CAUTION
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WARNING
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CAUTION
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Table of Contents/Preface
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