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Rockwell Automation External Dynamic Brake Resistor Recommended Protection User Manual

Rockwell Automation Equipment

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This document, as well as more information about Reliance Electric products, can be
found at www.reliance.com/drives.

Installation Instructions

External Dynamic Brake Resistor Recommended Protection

External Brake Resistor Circuitry

!

ATTENTION: AC drives do not offer protection for externally mounted
brake resistors. A risk of fire exists if external braking resistors are not
protected. External resistor packages must be self-protected from
overtemperature or the protective circuit shown below, or equivalent,
must be supplied.

Power On

R (L1)
S (L2)

T (L3)

Power Source

DB Resistor Thermostat

Power Off

M

M

(Input Contactor) M

Three-Phase

AC Input

AC Drive

Publication D2-3515 - July 2002

Copyright

2002 Rockwell Automation. All rights reserved. Printed in USA.