Sigma II User’s Manual Table of Contents/Preface
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Safety Precautions
The following precautions are for checking products upon delivery, installation, wiring,
operation, maintenance and inspections.
Checking Products upon Delivery
Installation
Wiring
• Always use the servomotor and servo amplifier in one of the specified combinations.
Not doing so may cause fire or malfunction.
• 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.
• Connect the ground terminal to a class 3 ground (100Ω or less).
Improper grounding may result in electric shock or fire.
• Required for 7.5kW amplifiers:
Use of Yaskawa kit Number JZSP-CKT75 for wiring the power input and output terminals, or equivalent
UL listed closed-loop ring terminals designed to accept 4 AWG wires.
• Required for 200V, 11kW and 15kW amplifiers:
Use of Yaskawa kit number JZSP-CKT75 for wiring the power input and output terminals of the SGDH-
1AAE, and JZSP-CKT1E for the SGDH-1EAE, or equivalent UL listed closed-loop ring terminal to accept 4
AWG and 2 AWG wires respectively.
• Required for 400V, 6.0kW and 7.5kW amplifiers:
Use of Yaskawa kit Number JZSP-CKT75DE for wiring the power input and output terminals, or
equivalent UL listed closed-loop ring terminals designed to accept 8 AWG wires.
• Required for 400V, 11kW amplifiers:
Use of Yaskawa kit Number JZSP-CKT1ADE for wiring the power input and output terminals, or
equivalent UL listed closed-loop ring terminals designed to accept 8 AWG wires.
• Required for 400V, 15kW amplifiers:
Use of Yaskawa kit Number JZSP-CKT1EDE for wiring the power input and output terminals, or
equivalent UL listed closed-loop ring terminals designed to accept 6 AWG wires.
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