Side view (enlarged) front view – Rockwell Automation 2LW3000 LonWorks Communication Option Module for VTAC 7 Drives User Manual

Page 41

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Installing the LonWorks Module in the Drive

3-27

Step 2.

Verify That the DC Bus Capacitors are Discharged

Step 2.1 Open the drive’s outer cabinet door.

Step 2.2 Lower the plastic terminal strip shield at the top of the drive.

Step 2.3 Use a voltmeter to verify that there is no voltage at the drive’s AC input

power terminals, R, S, and T.

Step 2.4 Replace the plastic terminal strip shield.

Step 2.5 Ensure that the DC bus capacitors are discharged. To check

DC bus potential:

Stand on a non-conductive surface and wear insulated gloves. (600 V)

Use a voltmeter to check the DC bus potential at the Voltmeter Test
Points on the Power Module Interface board. See figure 3.14.

Step 3.

Remove the Keypad Bracket from the Drive

Refer to figure 3.14 for component locations.

Step 3.1 Record connections to the Regulator board terminal strip if they must be

disconnected to remove the keypad bracket.

Step 3.2 Use a magnetic screwdriver to remove the four screws and lock washers

that fasten the keypad bracket to the hinged mounting panel. Hold the
keypad bracket as you remove the screws.

Step 3.3 Disconnect the Regulator board ribbon cable from the Power Module

Interface board.

Figure 3.14 – LonWorks Module Location in 200 to 400 HP @ 460VAC Drives

R E S E T

PR O GR AM

R EV ER SE

FO R WAR D

AU TO

JO G

R EMO TE

RU N NI NG

Pa sswo rd

TO R QU E

H z

R PM

AMP S

VO LTS

S T O P

START

ENTER

GND

DC–

DC+

DC–

DC+

WT1

WT2

RL1

WT3

SL2

Wi
rin

DANGER

POWER CONNECTIONS

FULL SHIELD TABS IN AND ROTATE SHIELD OUT

CONNECT USING 360MCM TWO HOLE TERMINAL LUGS

TORQUE TO 325IN-LB