Download In This Section - Motion Control Engineering, Inc.

Safety Precautions
Danger
This equipment is designed to comply with ASME A17.1, National Electrical Code, CE, and CAN/
CSA-B44.1/ASME-A17.5, and other applicable codes and must be installed by a qualified elevator
contractor. It is the responsibility of the elevator contractor to make sure that the final installation
complies with all local codes and is installed in a safe manner.
This equipment is suitable for use on a circuit capable of delivering not more than 10,000 rms symmetrical amperes, 600 volts maximum. The three-phase AC power supply to the Drive Isolation
Transformer (if applicable) used with this equipment must originate from a fused disconnect switch
or circuit breaker sized in conformance to all applicable national, state, and local electrical codes in
order to provide the necessary motor branch circuit protection for the Drive Unit and motor. Incorrect motor branch circuit protection will void the warranty and may create a hazardous condition.
Proper grounding is vitally important to safe and successful operation. Ground equipment as indicated in construction drawings and controller job prints. You must choose the proper conductor size
and minimize the resistance to ground by using the shortest possible routing. See National Electrical
Code Article 250-95 or the applicable local electrical code.
Before applying power to the controller, physically check all the power resistors and other components located in the resistor cabinet and inside the controller. Components loosened during shipment may cause damage or fail to function properly.
For proper operation of the AC Drive Unit in the controller, you must make sure that: 1) A direct solid
ground is provided in the machine room to properly ground the controller and motor. Indirect
grounds such as the building structure or a water pipe may not provide proper grounding and could
act as an antenna to radiate RFI noise, thus disturbing sensitive equipment in the building. Improper
grounding may also render any RFI filter ineffective. 2) The incoming power to the controller and the
outgoing power wires to the motor are in their respective, separate, grounded conduits. Refer to construction drawings and to elevator job prints for grounding instruction.
This equipment may contain voltages as high as 1000 volts. Use extreme caution. Do not touch any
components, resistors, circuit boards, power devices, or electrical connections without ensuring that
high voltage is not present.