Specifications

Section 1—Installation & Configuration Bulletin No. VVDED397044US R12/00

Installation December 2000

To measure the DC bus capacitor voltage:

1. Disconnect all power from the drive controller including external

control power that may be present on the control board and the option

board terminals.

2. Wait 3 minutes for the DC bus capacitors to discharge.

3. Read the model number of the drive controller from the nameplate

and identify the corresponding (+) and (–) measurement points from

Table 5 and Figure 1 on page 9.

4. Open the door or cover of the drive controller.

5. Set the voltmeter to the 1000 Vdc scale. Measure the voltage

between the (+) and (–) measurement points identified in step 3.

Verify that the DC bus voltage has discharged below 45 V before

servicing the drive controller.

6. If the DC bus capacitors will not discharge below 45 V, contact your

local Square D representative. Do not operate the drive controller.

7. Replace all doors or covers after servicing the drive controller.

INSTALLATION

To install the VW3A58302U communication card, consult Figure 2 and

follow these steps:

1. Verify that DC bus voltage is not present. See “Bus Voltage

Measurement Procedure” on page 8.

2. Place the 50/60 Hz switch in the position corresponding to the motor

as indicated in the drive controller installation guide,

VVDED397048US.

3. Open the flexible protective cover ① over the option card connector.

4. Mount the option card on the control card support by plugging it into

the connector ➁. Secure it with the three screws ➂ provided.

5. Close the flexible protective cover back over the option card.

6. Replace all doors or covers when installation is complete.