ELECTRICAL INSTALLATION
Power Wiring Connections
21
Power Wiring Connections
Ground Connections
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.
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.
Risk of damage to drive
,
or malfunction can occur.
•
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.
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