Schneider Electric ALTIVAR 58 TRX Przewodnik Instalacji Pobierz pdf (Strona 99)

VVDED397047USR6/03 Chapter 3—Diagnostics and Troubleshooting

06/2003 Procedure 1: Bus Voltage Measurement

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

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

from Table 26 and Figure 25.

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 of the covers after servicing the drive controller.

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Schneider Electric ALTIVAR 58 TRX Przewodnik Instalacji Strona 99