Chapter 4 Wiring MS300 (High Speed Model) After removing the front cover, please check if the power and control terminals are clearly visible. Please read following precautions to avoid wiring mistakes. 4-2 DANGER It is crucial to cut off the AC motor drive power before doing any wiring. A charge may still remain in the DC bus capacitors with hazardous voltages even after the power has been turned off a short time. Therefore it is suggested to measure the remaining voltage with a DC voltmeter on +1/DC+ and DC- before doing any wiring.
For your personnel safety, please do not start wiring before the voltage drops to a safe level When wiring, please choose the wires with specification that complies with local regulations for your personal safety. Check following items after finishing the wiring: 1. Are all connections correct? 2. Any loose wires? 3. Any short-circuits between the terminals or to ground?