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Regulator / Control Board for GV 3000



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  • Part Number: 0-56921-512AA
  • SKU: 056921512AARE
  • Manufacturer: Reliance Electric
  • Series: GV3000 Drives

0-56921-512AA Technical Specifications

Manufacturer Reliance Electric
Series GV3000
Part Number 0-56921-512AA

About the 0-56921-512AA

The 0-56921-512AA is a Reliance Electric Regulator Board. This board may have also been sold by ABB and Baldor Reliance at one point, but none of these companies still offer support for it. AX Control does make every attempt to keep it in stock. Please check the website for availability.

The 0-56921-512AA is a Regulator PCB used on a GV3000 series AC Power Module. These controllers use a total of two regulator boards. This card is version 5.0. This board does not have a faceplate or an enclosure. It goes directly into a drive controller. This board slides into a bracket that is attached to the membrane switch keypad.

The 0-56921-512AA uses microprocessors to regulate the drive controller. It uses the keypad to enter the proper parameters to adjust drive operations. It has the ability to recognize different feedback signals from the power circuits. It can read external speed reference signals and heat sensor feedback this is coming from internal components. It can read information that is coming from a pulse tachometer as long as it is set up to regulate the vector.  

The 0-56921-512AA allows IGBT powered devices to receive PWM gating signals. It has the ability to form for drive status indicators using A/B contacts. It has the power to provide analog output and a braking signal to the snubber resistor. It has 14 LED indicators and can display data on a 4-digit display. This display has the capacity to show error codes, drive parameters and the values of those parameters.

Frequently Asked Questions about 0-56921-512AA

What is the function of the 0-56921-512AA GV3000 regulator board?
The 0-56921-501AA regulator board serves at the control board, mounted directly under the keypad, for GV3000/SE and VTAC7 AC Drives. It holds the parameters and settings for application specific inputs. 
Will the 0-56921-512AA work in all GV3000 drives?
Although the 0-56921-512AA will not work in all GV3000 drives, it is compatible with quite a few of the NEMA style and Chassis style drives. Any drive that is a 5.1 under 200HP will utilize the 0-56921-512AA regulator board. 
Can the user read error codes and fault codes from the 0-56921-512AA?
Yes. The 4 digit display on the 0-56921-512 allows the user to read fault codes, error codes, parameters, and additional settings. Common error codes include:
  • FL (Function Loss)
  • OC (Over Current)
  • Aln (Analog Input Signal Loss)
  • LU (Low DC Bus Voltage)
  • nCL (Network communication loss)
AX Control has technicians that can help diagnose and troubleshoot these faults. Please reach out and submit a tech support ticket for assistance. 

Repair Services For 0-56921-512AA

Type Lead Time Price Action
Repair Service 1-2 weeks $1332

Our highly skilled technicians can repair your 0-56921-512AA. 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

0-56921-512AA Manuals, White Papers, Data Sheets, and Troubleshooting