Rockwell-automation 5730 DriveLogix5730 Controller for PowerFlex 700S Uživatelský manuál stáhnout pdf (Strana 197)

Appendix B

Access Procedures

Removing Power from Drive

and Compact I/O

ATTENTION: To avoid an electric shock hazard, verify that the

voltage on the bus capacitors has discharged before performing

any work on the drive. Measure the DC bus voltage at the +DC &

–DC terminals of the Power Terminal Block. The voltage must

be zero.

Remove power before making or breaking cable connections.

When you remove or insert a cable connector with power

applied, an electrical arc may occur. An electrical arc can cause

personal injury or property damage by:

• sending an erroneous signal to your system’s field devices,

causing unintended machine motion

• causing an explosion in a hazardous environment

Electrical arcing causes excessive wear to contacts on both the

module and its mating connector. Worn contacts may create

electrical resistance.

L1 L2 L3

io_bd1.eps

Task Description

Turn off and lock out input power. Wait five minutes.

Verify that there is no voltage at the drive’s input power terminals.

Measure the DC bus voltage at the +DC & -DC terminals on the

Power Terminal Block. The voltage must be zero.

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Rockwell-automation 5730 DriveLogix5730 Controller for PowerFlex 700S Uživatelský manuál Strana 197