Rockwell Automation Allen-Bradley PowerFlex 755 Bedienungsanleitung

Installation Instructions

Original Instructions

PowerFlex 755 AC Drives Cabinet Blower Assembly

Frames 8…10

Remove Power from the Drive

1. Turn off and lock out all input power, including any and all external power

sources. For common DC input drives only, turn off input power and lock

the drive disconnect switch SW2 and circuit breaker SW5 (if used).

SK-R1-FAN4-F8

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

bus capacitors has discharged completely before servicing. Measure the DC bus

voltage at the –DC and +DC TESTPOINT sockets on the front of the power

module (see below for location).

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.

ATTENTION: To avoid an electric shock hazard when servicing the drive, a

means for Lockout/Tagout of an external 120V uninterruptible power supply

and/or external 120/240V power source must be provided, or the circuit breaker

SW5 must be locked and tagged. Locking and tagging the common bus

precharge disconnect switch SW2 alone does not provide sufficient protection

when servicing the drive.

Rockwell Automation Publication 750-IN026B-EN-P - March 2019

2PowerFlex 755 AC Drives Cabinet Blower Assembly

2. Wait 15 minutes and verify that there is no voltage at the drive’s input

power terminals.

3. Measure the DC bus voltage at the –DC and +DC TESTPOINT sockets

on the front of the power module.

Frame 9 Common DC Input Drive Shown

SW2

SW5

Frame 8 AC Input Drive Shown

Rockwell Automation Publication 750-IN026B-EN-P - March 2019

PowerFlex 755 AC Drives Cabinet Blower Assembly 3

Remove Blower Assembly

1. Remove power from the drive.

Follow the Remove Power from the Drive procedure starting on page 1.

2. Remove the ten hexalobular screws that secure the blower assembly to the

drive cabinet.

3. Pull the blower assembly off the cabinet.

4. Disconnect the power cable.

Clean Sealing Surface

1. Carefully remove any gasket material that may be stuck to the sealing

surface.

2. Clean the sealing surface with a 50% isopropyl alcohol / 50% water

mixture.

T25

4PowerFlex 755 AC Drives Cabinet Blower Assembly

Publication 750-IN026B-EN-P – March 2019

Allen-Bradley, PowerFlex, Rockwell Automation, and Rockwell Software are trademarks of Rockwell Automation, Inc.

Trademarks not belonging to Rockwell Automation are property of their respective companies.

Rockwell Otomasyon Ticaret A.Ş., Kar Plaza İş Merkezi E Blok Kat:6 34752 İçerenköy, İstanbul, Tel: +90 (216) 5698400

Rockwell Automation maintains current product environmental information on its website at

http://www.rockwellautomation.com/rockwellautomation/about-us/sustainability-ethics/product-environmental-compliance.page.

Install Blower Assembly

1. Remove power from the drive.

Follow the Remove Power from the Drive procedure starting on page 1.

2. Connect the power cable.

3. Align the blower assembly mounting holes.

4. Insert screws and tighten using an alternating pattern.

4.0 N•m (35 lb•in)

T25

Rockwell Automation Support

For technical support, visit http://www.rockwellautomation.com/support/overview.page.

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