42-02-2M01 A1
Safety Precautions
This equipment is designed to comply with ASME A17.1, National Electrical Code, CE, and CAN/
CSA-B44.1/ASME-A17.5 and must be installed by a qualified contractor. It is the responsibility of the
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 sym-
metrical amperes, 600 volts maximum. The three-phase AC power supply to the Drive Isolation
Transformer 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. Bring your ground wire to the
system subplate. 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 or the applicable local
electrical code.
Before applying power to the controller, physically check all the power resistors and other compo-
nents located in the resistor cabinet and inside the controller. Components loosened during ship-
ment may cause damage.
For proper operation of the AC Drive Unit in your 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.
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.
Environmental Considerations
• Keep the machine room clean.
•Controllers are generally in NEMA 1 enclosures.
• Do not install the controller in a dusty area.
• Do not install the controller in a carpeted area.
• Keep room temperature between 32 and 104 degrees F (0 to 40 degrees C).
• Prevent condensation on the equipment.
• Do not install the controller in a hazardous location or where excessive amounts of
vapors or chemical fumes may be present.
• Make certain that power line fluctuations are within plus or minus 10% of proper value.
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