Safety Instructions WARNING! The ACS 300 motor cable terminals are at a dangerously high voltage when power is applied regardless of motor operation. There can be dangerous voltages inside the ACS 300 from external control circuits when the ACS 300 AC line power is shut off. Exercise appropriate care when working with the unit. Negligence to these instructions can cause physical injury and death. WARNING! The ACS 300 may introduce electric motors, drive train mechanisms and driven machines to an extended operating range. It should be confirmed that all equipment is suitable for these conditions. Do not make any voltage tolerance tests (Hi Pot or Meggar) on any part of the ACS 300.
Disconnect motor wires from the ACS 300 before making any such tests on the motor or motor wiring. Failure to follow these instructions can result in permanent damage to the ACS 300. WARNING! Certain parameter settings and external control signals may cause the ACS 300 to start up automatically after an input power failure. The motor rotational direction can be locked to forward only by using the DIR parameter. See page 64 for more details. Mechanical faults on the motor, power failure or other faults may cause stoppages. Correcting the fault may cause the motor to restart.
Take all necessary precautions to ensure personnel safety and to avoid damage to equipment and property before motor restart. ACS 300 User’s Manual vii