Rockwell Automation 20P User Manual

PowerFlex® DC Drive Frame D AC Current Transducers

Installation Instructions

ATTENTION: Only qualified personnel familiar with DC drives and associated machinery should plan or implement the installation, start-up and subsequent maintenance of the system. Failure to comply may result in personal injury and/or equipment damage.

ATTENTION: To avoid an electric shock hazard, ensure that all power to the drive has been removed before performing the following.

ATTENTION: This drive contains ESD (Electrostatic Discharge) sensitive parts and assemblies. Static control precautions are required when installing, testing, servicing or repairing this assembly. Component damage may result if ESD control procedures are not followed. If you are not familiar with static control procedures, reference A-B publication 8000-4.5.2, “Guarding Against Electrostatic Damage” or any other applicable ESD protection handbook.

What This Kit Includes

Tools That You Need

What You Need to Do

• Two AC current transducers

• Four mounting screws

• Static strap

• Hexalobular screwdriver

• Flathead screwdriver

• Torque wrench

To install the AC current transducers:

❐ Step 1: Remove power from the drive

❐ Step 2: Remove the protective covers and open the control panel

❐ Step 3: Remove the existing AC current transducers

❐ Step 4: Install the new AC current transducers

❐ Step 5: Close the control panel, replace the covers and document the

change

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Step 1: Remove Power from the Drive

ATTENTION: 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.

• Remove and lock-out all incoming power to the drive.

L1 L2 L3

Step 2: Remove the Protective Covers and Open the Control Panel

1. Loosen, but do not remove, the four hexalobular screws that secure the top

protective cover to the drive, then slide the cover up and off the drive chassis. Tightening torque is noted in the illustration for reassembly.

AC current transducers located on

T15

Tightening torque:

1.5 N•m (13 lb•in)

U and W terminals behind cover

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2. Loosen, but do not remove, the six hexalobular screws that secure the top air

flow plate to the drive, then slide the plate forward to lift it off the screws. Tightening torque is noted in the illustration for reassembly.

Note: The air flow plate cannot be removed from the drive unless the AC input wiring and bus bar extensions (if installed) are removed. However, the plate must be removed to remove the AC input terminals below it.

T15

Tightening torque:

1.5 N•m (13 lb•in)

Loosen screws

Top View of Drive

Loosen screws

Pull plate forward to lift off screws

3. Disconnect the DPI cable from the HIM (if present).

4. Insert a flathead screwdriver into the holes in the right side of the protective

covers on the drive, turn the latch 90° counter-clockwise, and open the control panel to the left.

Disconnect DPI cable

90°

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Step 3: Remove the Existing AC Current Transducers

Important: Mark all connections and wires before removal to avoid

incorrect wiring during reassembly.

1. The U and W phase AC input terminal bus bars must be disconnected and

pulled up in order to remove the AC current transducers. Remove the wiring from the U and W phase AC input terminal bus bars, if necessary.

2. Remove the four bolts and washers that secure the top insulator bar, over the

AC input terminal bus bars, to the drive frame and remove the insulator bar.

Disconnect wiring from U and W phase AC input terminal bus bars

Top insulator bar

XF XC

Remove bolts and washers and insulator bar

AC current transducers

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XF XC

3. Remove the bolt and washer that secures each of the U and W phase AC

input terminal bus bars to the rear insulator bar.

Remove bolt and washer

4. Remove the two nuts and washers that secure the signal wires to the

terminals on each of the AC current transducers and remove the wires.

5. Loosen the two screws that secure each of the AC current transducers to the

U and W phase terminal bus bar. The current transducers will be loose on the bus bars.

Remove nut, washer and, signal wires

Loosen two screws on CTs

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6. Remove the four M12 bolts and washers that secure each of the U and W

phase AC input terminal bus bars to the input bus bars and carefully slide the terminal bus bars up until the AC current transducers can be removed from the bus bars.

Slide bus bars up until AC current transducers can be removed

Step 4: Install the New AC Current Transducers

W phase bus bar

Signal wireU phase bus bar

Remove bolts and washers from U and W phase bus bars

Install the new AC current transducers in reverse order of removal as detailed in Step 3: Remove the Existing AC Current Transducers

above.

• Tightening torque for the M12 bolts is 45 N•m (398 lb•in).

• Verify that signal wire that was disconnected from the U and W phase bus bars when removing the current transducers is re-installed.

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Step 5: Close the Control Panel, Replace the Covers and Document the Change

1. Close the control panel and replace the top air flow plate and protective

cover in the order as described in Step 2: Remove the Protective Covers and

Open the Control Panel on page 2.

2. Record the installation of the new AC current transducers and date of

installation on the Field Installed Option label on the side of the drive (as shown below).

Rockwell Automation 20P User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual