Rockwell Automation 14C214, Instruction Manual

Page: 1 / 10

Reliance and MinPak are trademarks of Rockwell Automation.
© 1998 Rockwell International Corporation
Dynamic Braking Kit
for FlexPak Plus and MinPak Plus DC Drives
Model Numbers 14C214, 14C215, 14C216
Instruction Manual D2-3378
Product Description
Installation of the Dynamic Braking kit enables a single-phase FlexPak™ Plus or MinPak™ Plus DC drive to
provide rapid, smooth stopping of the motor. If the Dynamic Braking kit is not used, the drive causes the motor
to coast to rest when the contactor opens.
The Dynamic Braking kit includes a resistor that is automatically switched across the motor’s armature when
the drive is stopped. The rotating mechanical energy of the motor is converted into electrical energy that is
rapidly dissipated as heat. The resistor is sized for infrequent stops, so time must be allowed between stops for
the heat to dissipate.
Important: The dynamic brake is not a mechanical holding brake. It will not hold the motor shaft in place. It will
not prevent the motor from turning once motion has stopped.
The Dynamic Braking kit must be rated for the drive’s horsepower and voltage rating, as shown in table 1. Refer
to your drive’s nameplate for the horsepower and voltage rating. The Dynamic Braking kit contents are also
listed in table 1.
!
ATTENTION: Only qualified electrical personnel familiar with the construction and operation of
this equipment and the hazards involved should install, adjust, operate, and/or service this
equipment. Read and understand this manual and other applicable manuals in their entirety
before proceeding. Failure to observe this precaution could result in severe bodily injury or loss
of life.
Table 1 – Contents of the Dynamic Braking Kit
Description Quantity Kit Model Number and Rating Reliance Part Number
Dynamic Braking Resistor 1 14C214
1/4 to 1/2 HP @ 115 VAC
2 to 3 HP @ 230 VAC
63481-150QHC
1 14C215
3/4 HP @ 115 VAC
63481-150QCC
1 14C216
1/2 to 1-1/2 HP and 5 HP @ 230 VAC
63481-150QNC
Mounting Screw, 4-40 x 3/8 2 All 601741-74C
Instruction Manual 1 All D2-3378