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21
Variable Frequency Drive (VFD)
Consult the VFD manual and all documentation shipped with the unit for proper installation and wiring of
the VFD. The VFD has been programmed by the factory with ordered specific parameters. Use
a guide during installation.
WARNING!!
- Before installing the VFD drive, ensure the input power supply to the drive is OFF.
- The power supply and motor wiring of the VFD must be completed by a qualified electrician.
- The VFD is factory programmed, only change if replaced or ordered separately.
Table 5 - VFD Installation Check List
Check
Off
Description
The installation environment conforms to the VFD manual.
The drive is mounted securely.
Space around the drive meets the drive’s specification for cooling.
The motor and driven equipment are ready to start.
The drive is properly grounded.
The input power voltage matches the drive’s nominal input voltage.
The input power connections at L1, L2, and L3 are connected and tight.
The input power protection is installed.
The motor power connection at U, V, and W are connected and tight.
The input, motor, and control wiring are run in separate conduit runs.
The control wiring is connected and tight.
NO tools or foreign objects (such as drill shavings) are in the drive.
NO alternative power source for the motor (such as a bypass connection) is connected - NO
voltage is applied to the output of the drive.
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