Installation
3.4 Electrical Installation
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.
WARNING
Proper Field Wiring and Grounding Required!
All field wiring MUST be performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for field wiring installation and grounding as described in NEC and your local/state electrical codes. Failure to follow codes could result in death or serious injury.
WARNING
EQUIPMENT HAZARD!
Rotating shafts and electrical equipment can be hazardous. It is strongly recommended that all electrical work conform to all national and local regulations. Installation,
•Motor control equipment and electronic controls are connected to hazardous line voltages. Extreme care should be taken to protect against electrical hazard.
•Correct protective grounding of the equipment must be established. Ground currents are higher than 3mA.
•A dedicated ground wire is required.
•Wear safety glasses whenever working on electric control or rotating equipment.
NOTICE!
Make all power connections with a minimum of 60°C/ 140°F rated copper wire.
WARNING
INDUCED VOLTAGE!
Run output motor cables from multiple drives separately. Induced voltage from output motor cables run together can charge equipment capacitors even with the equipment turned off and locked out. Failure to run output motor cables separately could result in death or serious injury.
NOTE!
Run input power, motor wiring and control wiring in three separate metallic conduits or raceways for high frequency noise isolation. Failure to isolate power, motor and control wiring could result in less than optimum drive and associated equipment performance.
NOTE RUN INPUT POWER, MOTOR WIRING AND CONTROL WIRING IN THREE SEPARATE METALLIC CONDUITS OR RACEWAYS FOR HIGH FREQUENCY NOISE ISOLATION. FAILURE TO ISOLATE POWER, MOTOR AND CONTROL WIRING COULD RESULT IN LESS THAN OPTIMUM DRIVE AND ASSOCIATED EQUIPMENT PERFORMANCE.
•Because the motor wiring carries high frequency electrical pulses, it is important that no other wires are run together. If the incoming power wiring is run in the same conduit as the motor wiring, these pulses can couple electrical noise back onto the building power grid.
At least three separate conduits must be connected to the panel (Figure 3.4).
•Power into the panel (and ground back to the distribution panel)
•Power from the panel to the motor and earth insulated motor ground
•Control wiring
Control wiring should always be isolated from the high voltage power wiring.
Avoid getting metal chips into electronics.
Follow the connection procedures as illustrated in the drawing provided with the unit.