Product Description:

The DMA 45A 1103-D drive module is produced by Bosch Rexroth Indramat and belongs to the DMA Servo Drive Modules series. As a three-phase servo drive module, it links the DC bus of a multi-axis rack to synchronous or asynchronous motors and provides closed-loop velocity and torque control in automated machinery and handling stations. Because it connects to a shared DC bus rather than a separate line supply, the module fits multi-axis systems that centralize incoming power in the rack. This arrangement also supports coordinated motion where several axes must operate within the same control system.

With a cabinet footprint width of 50 mm, the unit occupies a slim slot while leaving clearance for adjacent control electronics in the same rack. Cooling is handled by backplane air cooling, so heat is carried away along the mounting rail without external fans on the module. Feedback wiring connects through an encoder port with a standard interface, and network communication uses the SERCOS interface for deterministic data exchange with higher-level motion controllers. The narrow width supports dense cabinet layouts where several axes must be installed side by side. The housing follows a common mechanical format, so connector locations and mounting points remain consistent across comparable modules.

The module is part of the Servodyn-D series, which places it within the matching drive platform for this control architecture. It can operate as a master or as a slave in a multi-axis ring, as indicated by the Master/Slave Drive designation. The unit has no additional functions, so no braking chopper, safety relay, or fieldbus add-on is fitted. Its power stage is a 3-phase module for synchronous and asynchronous motors, allowing it to run either induction motors or permanent-magnet servo axes from the same drive type. This supports mixed-motion equipment that uses different motor types within one machine.