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Installation Instructions
External Dynamic Brake Resistor Recommended Protection
ATTENTION: AC drives do not offer protection for externally mounted
brake resistors. A risk of fire exists if external braking resistors are not
!
External Brake Resistor Circuitry
protected. External resistor packages must be self-protected from
overtemperature or the protective circuit shown below, or equivalent,
must be supplied.
(Input Contactor) M
Power Source DB Resistor Thermostat
Three-Phase
AC Input
Power Off
AC Drive
R (L1)
S (L2)
T (L3)
Power On
M
M
This document, as well as more information about Reliance Electric products, can be
found at www.reliance.com/drives.
Publication D2-3515 - July 2002 Copyright 2002 Rockwell Automation. All rights reserved. Printed in USA.
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U.S. Drives Technical Support
Tel: (1) 262.512.8176, Fax: (1) 262.512.2222, Email: support@drives.ra.rockwell.com, Online: www.ab.com/support/abdrives
Trademarks not belonging to Rockwell Automation are property of their respective companies.
Publication D2-3515-July 2002 Copyright © 2002 Rockwell Automation, Inc. All Rights Reserved. Printed in USA.