Product Description:

The DMD01.1-W012N is a digital servo drive controller manufactured by Bosch Rexroth Indramat for the DMD Servo Drives series. It converts low-level motion commands into regulated three-phase power for compact AC servo motors used in positioning tables, pick-and-place arms, and light conveyor stations. By integrating amplification, encoder processing, and protective logic in one enclosure, the unit supports precise speed and position control while minimizing control cabinet wiring.

Communication with the host PLC is provided through a RS232C port that handles parameter download and status reporting. Current and voltage are shaped by an IGBT PWM sine-wave driving method, which limits harmonics and keeps regulation stable up to the 300 Hz frequency-response rating when motor and load inertia are matched. Because the chassis relies on natural cooling, installation must allow free air circulation without additional fans. The power section accepts a 1- or 3-phase 200-230 V (+10%/-15%), 50/60 Hz supply, so it can share a standard factory power source. Under continuous duty, the inverter delivers 1.0 Arms, which suits the drive's 100 W class while keeping switching losses within the convection limit. Encoder feedback at 2,500 pulses per revolution and a selectable dynamic brake function complete the core control loop.

In transient conditions, the output stage provides headroom beyond nominal figures. The mechanical load can draw a rated shaft power of 100 W, and acceleration bursts are supported by a peak current of 4.3 Ao-p. If a fault tries to raise phase current further, an 20 A electronic threshold disconnects the bridge within microseconds. Bus voltage is regulated as well; surges are clamped at 400 VDC, while a 190 VDC floor helps prevent logic dropout during input power dips. Overspeed protection stops drive commands above 6,000 rpm, and the internal brake resistor dissipates regenerative energy to limit voltage rise.