Rockwell Automation 20B Power Bd/CT/Thermistor Replacement - Frame 5 User Manual
Page 2
2
Thermistor Replacement
A. Remove the thermistor lead (see photo below) from
the Power Interface Board. Remove the screw securing
the thermistor. Discard thermistor. Apply a thin film of
thermal grease (supplied) to the new thermistor and
replace in reverse order. Torque thermistor screw to
1.7 N-m (15 lbf.-in).
Power Interface Board Removal/Replacement
A. Remove upper sheet metal to access the board/
transducer(s).
B. Label and remove the wires/cables from the Power
Interface Board.
C. Remove the board.
D. If any of the Current Transducers are being replaced,
proceed to step
If not, replace board and re-
assemble in reverse order.
Important: When replacing the Power Interface
Board, the six gate leads must also be
replaced with the leads supplied. Replace
the leads one-at-a-time to assure correct
orientation.
Tighten board screws to 1.7 N-m (15 lbf.-in.) and sheet
metal screws to 3.2 N-m (28 lbf.-in.).
Current Transducer Replacement
E. With the Power Interface Board still removed, locate
the transducer to be replaced.
F. Remove the screw securing the U, V or W lead that
extends through the transducer. Remove the lead from
the center of the transducer.
G. Remove the transducer by taking the 2 screws out.
Replace with new transducer and tighten screws to 1.7
N-m (15 lbf.-in.).
H. Replace the U, V or W lead and tighten screw to 4.5
N-m (40 lbf.-in.).
I. Replace the Power Interface Board.
Important: If a new board is being installed, the six
gate leads must also be replaced with the
new leads supplied. It is recommended
that the leads be replaced one-at-a-time to
assure correct orientation.
Tighten board screws to 1.7 N-m (15 lbf.-in.).
J. Re-assemble remainder of drive. Tighten sheet metal
screws to 3.2 N-m (28 lbf.-in.).
4
Transducer
Gate Leads
Power Interface Board
Thermistor Lead
www.rockwellautomation.com
Americas: Rockwell Automation, 1201 South Second Street, Milwaukee, WI 53204-2496 USA, Tel: (1) 414.382.2000, Fax: (1) 414.382.4444
Europe/Middle East/Africa: Rockwell Automation, Vorstlaan/Boulevard du Souverain 36, 1170 Brussels, Belgium, Tel: (32) 2 663 0600, Fax: (32) 2 663 0640
Asia Pacific: Rockwell Automation, Level 14, Core F, Cyberport 3, 100 Cyberport Road, Hong Kong, Tel: (852) 2887 4788, Fax: (852) 2508 1846
Power, Control and Information Solutions Headquarters
Americas: Rockwell Automation, 6040 Ponders Court, Greenville, SC 29615-4617 USA, Tel: (1) 864.297.4800, Fax: (1) 864.281.2433
Europe/Middle East/Africa: Rockwell Automation, Herman-Heinrich-Gossen-Strasse 3, 50858 Köln, Germany, Tel: (49) 2234 379410, Fax: (49) 2234 3794164
Asia Pacific: Rockwell Automation, 55 Newton Road, #11-01/02 Revenue House, Singapore 307987, Tel: (65) 6356 9077, Fax: (65) 6356 9011
Motors, Drives and Power Transmission Solutions Headquarters
U.S. Allen-Bradley Drives Technical Support - Tel: (1) 262.512.8176, Fax: (1) 262.512.2222, Email: [email protected], Online: www.ab.com/support/abdrives
U.S. Reliance Drives Technical Support - Tel: (1) 800.726.8112, Online: www.reliance.com
Publication RA-IN016A-EN-P – June, 2005
P/N 375847-P01
Copyright © 2005 Rockwell Automation, Inc. All rights reserved. Printed in USA.