Rockwell Automation Flex/WebPak 3000 DC Drive Inverting Fault CB Kit 1.5-30HP-230VAC, 3-60HP-460VAC User Manual

Product description

FlexPak, WebPak, and Reliance are trademarks of Rockwell Automation

Inverting Fault Circuit Breaker Kit

for FlexPak 3000 and WebPak 3000 Digital DC Drives

1.5 - 30 HP @ 230 VAC and 3-60 HP @ 460 VAC

Model Numbers: 906FK0101, 906FK0201, 906FK0301, 906FK0401, and 906FK0501

Instruction Manual D2-3300-2

Product Description

This instruction manual describes how to install the optional Inverting Fault Circuit Breaker kit on regenerative
FlexPak



3000 and WebPak



3000 drives (1.5-30 HP @ 230 VAC and 3-60 HP @ 460 VAC.) Use of this kit is

recommended when applying regenerative drives to high inertia loads. High inertia loads are those in which
the reflected load to the motor is equal to or greater than the motor’s load, or in which the drive is frequently
regenerating power to the AC line, such as in unwind and pay-off application.

An inverting fault typically occurs as a result of a loss of the AC line. If this happens, the AC input transformer
becomes a short circuit across the motor. Since the SCRs in the bridge no longer turn off, the motor’s stored
mechanical energy is regenerated into the short circuit. The inverting fault circuit breaker interrupts the
generator action, protecting the SCR bridge and the motor.

In addition to the parts included in the kit, you must supply an appropriate mounting panel for the inverting fault
circuit breaker and provide circuit breaker wiring.

Important: If any other interlocks are required for your application, they must be connected in series to the

Customer Interlock Input along with the circuit breaker.

ATTENTION: Only qualified 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 instruction manual in its entirety before proceeding. 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.

Table 1 – Verifying That the Inverting Fault Circuit Breaker Matches the Drive

Drive Horsepower/Voltage Rating

Kit Model Number

1.5 - 2 HP @ 230 VAC
3 - 5 HP @ 460 VAC

906FK0101

3 - 5 HP @ 230 VAC
7.5 - 10 HP @ 460 VAC

906FK0201

7.5 - 10 HP @ 230 VAC
15 - 20 HP @ 460 VAC

906FK0301

15 - 20 HP @ 230 VAC
25 - 40 HP @ 460 VAC

906FK0401

25 - 30 HP @ 230 VAC
50 - 60 HP @ 460 VAC

906FK0501

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respective companies.