Rockwell Automation External Dynamic Brake Resistor Recommended Protection User Manual

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.

U.S. Drives Technical Support

Tel: [phone], Fax: [phone], Email: [e-mail], 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.