Product Description:

The DMA 030A 4201-D servo drive module is produced by Bosch Rexroth Indramat within the DMA Servo Drive Modules series. It is a three-phase power stage for regulating synchronous and asynchronous motors in multi-axis automation racks. Mounted in a backplane, the unit converts high DC bus voltage into controlled motor current, allowing coordinated speed and torque control in material-handling machines, packaging lines, and general factory automation cells. This arrangement allows multiple axes to operate from the same rack structure while each motor receives regulated current from its own drive module.

An external supply line delivers 1.23 A at 24 V to power the control electronics, fan, and contactor logic, while the energy section operates from a DC bus maintained between 670/715 VDC. This separate low-voltage feed keeps the control section active while the power stage is managed through the shared bus structure. Under open-loop operation, the module can provide peak motor currents of 35 Arms at 4 kHz or 32 Arms at 8 kHz, which sets the available acceleration and braking torque. Thermal design relies on air cooling through the backplane, and heat produced by the semiconductors and the internal fan is limited to a maximum loss of 180 W, so cabinet ventilation must remove this continuous dissipation during heavy-duty cycles.

During closed-loop control, the drive supplies up to 18 Arms at the lower switching rate or 12 Arms at the higher rate, which suits constant-speed production zones where encoder feedback is processed through the integrated gear encoder interface. The module slides into a bay on the RMA/DM 30 backplane, and its physical width of 50 mm supports dense multi-axis assemblies without excessive rail space. With the backplane carrying the load, installation stress remains moderate because the housing and heat sink weigh only 7.3 kg. Setpoints arrive over a 16-bit analog channel, allowing fine resolution when coordinating current targets across neighboring axes.