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Regulator Board for GV3000 Series



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  • Part Number: 0-56921-401AA
  • SKU: 056921401AARE
  • Manufacturer: Reliance Electric
  • Series: GV3000 Drives

0-56921-401AA Technical Specifications

Manufacturer Reliance Electric
Series GV3000
Part Number 0-56921-401AA
Board Type Regulator Board

Product Description

The 0-56921-401AA is a Reliance Electric Regulator PCB that was made for a GV3000 AC Power Module. Asea Brown Boveri and/or Baldor Reliance may have also sold this board at one point. This was the fourth version of this regulator created.  Because there have been newer versions of this board put into production, this board is no longer receiving support from these companies. Even though this board has become harder to find, AX Control still attempts to keep it in stock as a refurbished or new surplus stock part.

The 0-56921-401AA is a regulator printed circuit board. Two total regulator boards are used on GV3000 drives. This board is typically considered to be the lower horsepower version. There are few differences between the high HP and low HP versions of regulators. The main difference is the position and types of power unit interface connectors that are used. This board uses a 26-pin ribbon cable connected on the right side of the board and the high HP version uses a 60-pin ribbon cable connected on the top of the board.

This board is mounted behind the membrane switch keypad using a standard mounting bracket. This board is connected to the power unit interface PCB. The board should be mounted with the terminal strip showing on the bottom and the 7-segment LED display showing on the keypad display window. This LED displays error data, drive parameters and the parameter values for the drive. This card provides the snubber resistor braking signal when an optional kit is used. The J8 connector on the regulator card is actually an RS-232 serial communications port. This port allows the regulator to talk to external components.  

Frequently Asked Questions about 0-56921-401AA

What is the function of the 0-56921-401 regulator board?
The 0-56921-401 GV3000 regulator board is a 4.0 version regulator board that serves as the control board for GV3000/SE and VTAC7 drives. It holds the settings or parameters for the drive and is one of the earliest versions of regulator boards. 
Will the 0-56921-401 work in place of any GV3000 regulator board?
Because the 0-56921-401 is an early version of the GV3000 regulator boards, it will likely not be compatible with 5.0 and 6.0 versions. Please see the manual for more information regarding regulator board compatibility. 
Does AX Control still supply the 0-56921-401 Regulator Board?
Yes. Although obsolete, we continue to supply and stock both new surplus and reconditioned 0-56921-401 regulator boards as replacement boards for our customers. 

Repair Services For 0-56921-401AA

Type Lead Time Price Action
Repair Service 1-2 weeks $1599

Our highly skilled technicians can repair your 0-56921-401AA. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

AX Control Warranty Info

All products we sell are backed by our unparalleled warranty. A warranty certificate will be provided with your order upon request.
All PLCs, HMIs, and Turbine Control Boards: 3 Years
All AC/DC and Servo Drives: 2 Years
All Motors: 1 Year
Learn More

0-56921-401AA Manuals, White Papers, Data Sheets, and Troubleshooting