Power Wiring Connections
Contact with hazardous voltage could result in death or serious injury.
•
Disconnect and lock out all power before installing or servicing equipment.
•
Make sure that all DC bus capacitor voltage has dissipated for several minutes after VFD power is dis-
connected before working on wiring.
•
Connect the motor, the drive, metal plumbing, and all other metal near the motor or cable to the
power supply ground terminal using wire no smaller than motor cable wires.
•
Close any open conduit holes before finishing installation.
•
All wiring must comply with the National Electrical Code and local codes.
Ground Connections
Risk of damage to drive
•
Ensure that the system is properly grounded all the way to the service entrance panel. Improper
grounding may result in loss of voltage surge protection.
•
Nonmetallic enclosure does not provide grounding between conduit connections. When using
metal conduit, install Listed grounding bushings and Listed No. 10 AWG minimum wires per national
and local codes.
•
When installing rigid metal conduit, connect conduit to hub BEFORE hub is connected to drive
enclosure.
1
Follow these grounding requirements to ensure safety and performance.
1.
Make sure a service entrance ground rod is properly installed and connected.
2. An input power ground wire from the supply panel must be connected to the drive.
3. A dedicated output ground wire from the drive must be connected to the motor. Motor and ground
wires must be bundled together.
,
or malfunction can occur.
2
3
ELECTRICAL INSTALLATION
Power Wiring Connections
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