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Reliance Electric DM-20D Brushless Servo Drive 20amp w/ D Shell Connector



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  • Part Number: DM-20D
  • SKU: DM20DRE
  • Manufacturer: Reliance Electric
  • Series: BRU-200 Series

DM-20D Technical Specifications

Manufacturer Reliance Electric
Series BRU-200
Product Number DM-20D
Input Voltage 100/240 VAC
Phase 1 Phase
Hz 50/60 Hz

Product Description

The DM-20D is a servo drive BRU-200 20-amp with a d-shell connector. This servo drive was made by Reliance Electric and is a part of their Legacy Series of parts. At one point, ABB or Baldor Reliance may have been making this drive but neither of them are offering support for it anymore. AX Control does attempt to keep it in stock as a new surplus or refurbished part.

The main purpose of the DM-20D is to be able to provide an Electro-Craft motor with power and control. It is suggested by Reliance that the user pair an F-Series F-4030 or an S-Series S-4030 or S-3016 with this type of drive.

The DM-20D has an open style chassis where a small part of the internal circuitry is visible from the faceplate. The faceplate of the DM-20D has two terminal strips on it. One is labeled external shaft TB2 and Internal. The other one is labeled TB1 and has connections for the motor and DC bus. There are also a set of six connections that are labeled P6-serial, P5-monitor, P4-motor encoder, P3-enc. out, P2-I/O, and P1-controller. There are 4 LED indicator lights on the top of the faceplate that are labeled with the numbers 1-4. The top LED will glow green if the drive is functioning properly and the other three will glow red to indicate that something is not functioning right with the drive. On the bottom of the chassis, there is a fan and air vents that are used to keep the internal circuitry cool.

Frequently Asked Questions about DM-20D

What is the function of the DM-20D?
The DM-20D is a high performance drive used to contorl and provide power to Reliance Electric motors such as the S-Series and F-Series motors. 
What do the LED light indicate on the outside of the drive?
There are LED lights on the exterior of the DM-20D that indicate the performance of the drive. If the LED lights turn red, the drive is not functioning correctly. 
How much does the DM-20D weigh?
The DM-20D has a weight of 15 lbs or  6.803 kg. 
Does AX Control sell the DM-20D reconditioned?
Yes, AX Control has both reconditioned and new factory package conditions in stock and ready for purchase. 
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Repair Services For DM-20D

Type Lead Time Price Action
Repair Service 1-2 weeks $1609

Our highly skilled technicians can repair your DM-20D. 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

DM-20D Manuals, White Papers, Data Sheets, and Troubleshooting