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2 year warranty

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GV3000 Regulator Board Manufactured by Reliance Electric



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  • Part Number: 0-56921-604
  • SKU: 056921604RE
  • Manufacturer: Reliance Electric
  • Series: GV3000 Drives

0-56921-604 Technical Specifications

Manufacturer Reliance Electric
Product Type Regulator Board
Series GV3000
Part Number 0-56921-604
Keypad/Display On-board LED Display

Product Description

Reliance Electric created a 0-56921-604 to be a Regulator Board for a GV3000/SE AC Drive. This regulator board version can be installed into a wide selection of GV3000 variable frequency drives and simply needs a power module identification (P.998) in order to match the drive's HP and Voltage. The regulator board holds all the application specific parameters, shows any fault codes or error codes, and displays the metrics during operation in the drive. 

The 0-56921-604 is a regulator printed circuit board. This board is the sixth version of this board that was put into production. It is a replacement for one of the regulators that come standard in a controller. When trying to mount this board, it is a good idea to unmount the drive if it is mounted into a panel because it will make it easier to install the regulator. You should also make note of the terminal wire and jumper positions on the original board so that you connect the new board using those settings.  

The 0-56921-604 is connected to the back of the keypad that’s located in the center of the controller. There is a mounting bracket on the keypad that you can slide the regulator into. Make sure the 7-segment LED display on the regulator is showing on the keypad before you attach any of the mounting hardware to the regulator. Once it is mounted, you can connect the corresponding ribbon cable to the regulator. The regulator is then connected to the current feedback PCB using a 26-pin ribbon cable. There is an optional board that can connect to the regulator that is mounted behind it.  

Make sure you wear an antistatic wristband when dealing with the internal components of the GV3000/SE controller to prevent any type of circuitry damage.

Frequently Asked Questions about 0-56921-604

Where does the 0-56921-604 fit in the GV3000 drive? What is required by the installation process?
The 0-56921-604 mounts directly below the keypad and is used as the control board that holds parameters and displays fault codes, error codes, settings, etc. The installation process is as follows:
  • First disconnect the faulty 0-56921-604 and reconnect the working board to both the keypad and the power board via the connected ribbon cables. 
  • Second, set the Power Module Identification for the 0-56921-604 to tell it which drive it is installed in and to match the HP and Voltage of the drive
  • Finally, enter the application specific parameters into the drive and install on the production 
Does AX Control provide both New Surplus and Reconditioned 0-56921-604 regulator boards?
In most cases our company has both new surplus 0-56921-604 in the original factory package and decomissioned, tested, and working 0-56921-604 for sale as well. 
Can AX Control help assist with troubleshooting my drive if I have the 0-56921-604 GV3000/SE regulator board installed?
Yes, we have skilled technicians who will be happy to take a look at the fault code displayed on the 0-56921-604 and recommend corrective actions, repair, or replacement. 

Repair Services For 0-56921-604

Type Lead Time Price Action
Repair Service 1-2 weeks $1184

Our highly skilled technicians can repair your 0-56921-604. 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

0-56921-604 Manuals, White Papers, Data Sheets, and Troubleshooting