DM-50

About the DM-50

The DM-50 is a model of the BRU-500 series of 3-Phase Brushless Servo Drives. This drive was originally produced by Reliance Electric but may have also been manufactured by Baldor Reliance and/or ABB. None of these manufacturers support this legacy series part anymore and it has become a little hard to find. AX Control tries to keep it in stock as a refurbished or new surplus stock part. The DM-50 is a 50 amp 120/240 VAC 170/340 VDC 50/60Hz servo drive. It is meant to be a way to supply control and power to a drive motor. The manufacturer suggests that this drive uses either an F-Series or S-series style Electro-Craft motor. The motors within those series are:

• F-4050
• F-6100
• F-4075
• S-4050
• S-6100
• S-4075

This drive has a maximum watt loss of 180W. It has a 50A dive peak amps and a continuous amperage of 40A. It can maintain a bus voltage of 125/375 VDC (325 VDCs if using a 230 VAC input). The DM-50 weighs 11 kilograms. It is in an enclosure that should be mounted vertically onto a very flat surface. It should be mounted in an inside location away from corrosive materials and liquids. The faceplate on this chassis does not have a lot of external components.