DMC 50720-AC Danaher
Wake Industrial LLC is not an authorized distributor of this product.
The Danaher DMC 50720-AC is part of the DMC Motion Controllers series and features a continuous current of 7 Amps at 40˚C and a peak current of 20 Amps. It operates on a 3-phase 400 VAC input voltage and provides a continuous power output of 3.4 kW. The controller has a weight of 3.8 kg and measures 234 mm in height, 227 mm in depth, and 76 mm in width.
Internal Product Review
The DMC 50720-AC is a Danaher motion controller designed for efficient operation on 3-phase 400 VAC input. Continuous output of 7 A and 3.4 kW at 40 C supports stable performance under sustained industrial loads. A 20 A peak current is a strong advantage for demanding motion applications.
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Product Description:
The DMC 50720-AC is an AC motion controller manufactured by Danaher for the DMC Motion Controllers series. It conditions three-phase mains power and supplies regulated current to compatible servo motors so positioning tasks can be synchronized with a plant’s PLC. By combining current regulation, speed commands, and integrated dynamic braking, the unit serves as the central power stage in material-handling, packaging, and general automation cells. This arrangement allows the controller to coordinate motor torque and velocity while managing power flow during acceleration and deceleration.
The controller accepts a utility feed of three-phase 400 VAC and maintains a continuous output of 7 A at 40 °C, while transient moves can draw up to 20 A without saturating the power stage. Pulse-width modulation operates at a carrier frequency of 4 kHz, allowing the current loop to reach an open-loop bandwidth of 2 kHz and track rapid torque demands. A broad operating window is provided through a 1:9000 speed range, enabling slow indexing and high-speed traverses from the same drive. At rated load, the conversion path provides 95% efficiency, reducing cabinet heat and the need for auxiliary cooling. The controller also provides 3.4 kW of continuous power, delivers 4.5 A RMS at 40 °C, and requires a minimum motor phase inductance of 8 mH. These electrical limits support appropriate motor matching and stable vector control under changing motion demands.
During rapid deceleration, the internal chopper diverts regenerated energy and can sink up to 18.7 A. It can absorb a maximum of 10 kJ before the external resistor must dissipate additional heat. The package measures 234 mm in height and 227 mm in depth, while its mounting face is 76 mm wide, allowing multiple axes to be arranged in narrow enclosures. With a mass of 3.8 kg, the drive can be installed on suitable DIN rails or backplates without heavy reinforcement. Its compact housing also helps conserve panel space in machines that require several coordinated servo axes.
