Rockwell Automation Flex/WebPak 3000 DC Drive DB Kit, 1.5 HP-150 HP-230V, 3HP-600 HP-460V w/o NEMA1 - Manual (Page 9)

Dynamic Braking Kits for FlexPak 3000 and WebPak 3000 Digital DC Drives 9
Installing the DB Kit in 400 HP to 600 HP @ 460 VAC Drives
Mounting the Resistor Assembly
Step 1. Turn off, lock out, and tag power to the drive.
Step 2. Refer to the parts listed in table 3. Determine where you will mount the Dynamic Braking kit. For
typical applications, hardware is included for mounting on the roof of the drive cabinet enclosure.
For Cabinet Roof Mounting:
a. Drill 4 mounting holes and one wire access hole in the cabinet using the dimensions in figure 4.
b. Install a grommet in the cabinet wire access hole.
c. Mount the resistor assembly to the roof using 5/16” x 3/4” carriage bolts and nuts.
d. Route the resistor assembly harness through the holes in the resistor assembly base and cabinet
roof.
e. Remove the top panel from the enclosure and set the screws aside.
f. Mount the enclosure to the resistor assembly base using 10-32 screws and washers supplied.
g. Replace the enclosure top panel and reattach screws.
Other:
For non-typical applications, mount the kit as required. The kit may be mounted in the bay adjacent to
the drive bay. It may be mounted upside down, hanging from the underside of the hood or the
enclosure back panel. It may be used with or without the supplied enclosure.
Wiring the DB Kit
This DB kit can be used with the following drive configurations:
• DB Basic Configuration (shown in figure 5)
• DB with an Inverting Fault Circuit Breaker (shown in figure 7)
• DB with a Motor Series Field, S1 connected to A2 with an Inverting Fault Circuit Breaker (figure 8)
!
ATTENTION: Only qualified personnel familiar with the construction and operation of this
equipment and the hazards involved should install, operate, and/or service this equipment. Read
and understand this instruction manual in its entirety before proceeding. Failure to observe this
precaution could result in severe bodily injury or loss of life.
ATTENTION: The drive is at line voltage when connected to incoming AC power. Disconnect,
tag and lockout all incoming power to the drive before performing the following procedure. Failure
to observe this precaution could result in severe bodily injury or loss of life.
ATTENTION: The user is responsible for conforming with all applicable local, national, and
international codes. Failure to observe this precaution could result in damage to, or destruction
of, the equipment.
!
ATTENTION: Dynamic braking resistors may be extremely hot. Install in an enclosure or provide
adequate clearance to ensure that nothing can come in direct contact with, or in proximity to,
the DB resistors. Failure to observe this precaution can result in severe burns and damage to,
or destruction of, the equipment.