2–20

Step-by-Step Basic Installation

Inverter Mounting

and Installation

 

 

7

Wire the Inverter Output to Motor

Step 7: The process of motor selection is beyond the scope of this manual. However, it must be a three-phase AC induction motor. It should also come with a chassis ground lug. If the motor does not have three power input leads, stop the installation and verify the motor type. Other guidelines for wiring the motor include:

•Use an inverter-grade motor for maximum motor life (1600V insulation).

•For standard motors, use an output filter if the wiring between the inverter and motor exceeds 10 meters in length.

Simply connect the motor to the terminals [U/T1], [V/T2], and [W/T3] indicated on the inverter to the right. This is a good time to connect the chassis ground lug on the drive as well. The motor chassis ground must also connect to the same point. Use a star ground (single-point) arrangement, and never daisy-chain the grounds (point-to- point).

Use the same wire gauge on the motor and chassis ground wiring as you used on the power input wiring in the previous step. After completing the wiring:

•Check the mechanical integrity of each wire crimp and terminal connection.

•Replace the front panel and secure the retention screw firmly.

To Power

To Chassis

To Motor

Source

Ground

 

Logic Control Wiring

8

Uncover the Inverter Vents

After completing the initial installation and powerup test in this chapter, you may need to wire the logic signal connector for your application. For new inverter users/applications, we highly recommend that you first complete the powerup test in this chapter without adding any logic control wiring. Then you will be ready to set the required parameters for logic control as covered in Chapter 4, Operations and Monitoring.

Step 8: After mounting and wiring the inverter,

Uncover the fan outlet vents

remove any protective material covering the

 

 

inverter ventilation openings from Step 3. This

 

 

includes covers over the side ventilation ports

 

 

as well as the fan outlet area.

 

 

 

 

CAUTION: Failure to remove all vent opening covers before electrical operation may result in damage to the inverter.

Uncover the ventilation slots,

both sides