Product Description:

The DMA 30A 3301-D drive module is manufactured by Bosch Rexroth Indramat as part of the DMA Servo Drive Modules series. It mounts on a Servodyn-D rack and provides the power electronics needed to run both synchronous and asynchronous motors in automated machinery. By converting the shared DC link into a regulated three-phase output, the module supports precise velocity and torque control while relaying operating data to the higher-level motion controller. Rectification and filtering are handled elsewhere in the rack, so multiple modules can use one supply section instead of requiring a separate front-end stage for each axis. This arrangement helps multi-axis systems keep a compact rack structure while maintaining coordinated motor control.

The unit uses backplane air cooling, so heat is transferred from internal components to a rear heat sink and removed by rack airflow rather than by a dedicated fan on the front panel. Motor position feedback is accepted through a resolver interface, which supports rotor angle detection at low speed and during startup. Command values reach the control circuitry through an analog input with 12-bit analog resolution, which provides 4096 discrete levels for fine torque adjustment. The module has a width of 50 mm, which supports dense multi-axis layouts in standard enclosures. All power stages in the Servodyn-D series share the same mounting height, so mixed drive ratings can be installed on one backplane without mechanical adapters.

This unit is a three-phase module for synchronous and asynchronous motors. It is supplied as the standard variant, so the module follows the default feature set for this model. The unit has no supplemental motion or safety features, so any added application functions must be provided by the motion controller or by a separate option card. Its electrical format matches existing Servodyn power supplies and communication buses, which allows another axis to be integrated into the same rack layout. The matching rack format also helps keep wiring paths consistent across adjacent drive positions.