DMA 85B 7301-D Bosch Rexroth Indramat
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MPN: 1070085656
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The Bosch Rexroth Indramat DMA 85B 7301-D is a 3-phase servo drive module in the DMA Servo Drive Modules series, designed for synchronous and asynchronous motors. It uses air cooling via the backplane, features a resolver encoder interface, and supports interface options including CANrho. The module is 100 mm wide and is available as a standard variant.
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Product Description:
The DMA 85B 7301-D is a drive electronics module produced by Bosch Rexroth Indramat for the DMA Servo Drive Modules series. As a three-phase power stage, it connects synchronous and asynchronous servo motors to line power and motion controllers. It serves as the electrical link between the motor side and the control side of the drive system. This arrangement supports closed-loop speed and position regulation in automated machinery and material-handling cells.
This module relies on backplane air cooling, so heat is removed by airflow across the rear heat sink when the unit is inserted in a compatible rack. The feedback port accepts resolver feedback, allowing the drive to interpret rotor angle directly. Control wiring can be connected through the optional CANrho bus, which carries command words and diagnostic data on a single twisted pair to reduce cabinet wiring density. Using the bus for control signals can simplify cable routing inside dense control cabinets. With a width of 100 mm, the module occupies one slot in a standard 300 mm-deep servo rack, which helps keep panel layout predictable in multi-axis systems. The module has no integrated tertiary safety, I/O, or braking features, so those functions must be provided externally when required.
The hardware is classified as a 3-phase module for synchronous and asynchronous motors. This classification indicates that the output stage can operate with either motor type in the same platform. Within the broader Servodyn-D series, the module follows the electrical pinout and mechanical keying used by that family. The unit is the standard version, so its ratings and protective limits follow the baseline platform documentation rather than a custom configuration. This rear-mounted format keeps the connection pattern consistent across compatible racks.
Frequently Asked Questions about DMA 85B 7301-D:
Q: What cooling method is used in the DMA 85B 7301-D servo drive module?
A: The DMA 85B 7301-D is designed with air cooling through the backplane for effective heat dissipation.
Q: What type of encoder interface does the DMA 85B 7301-D module support?
A: This module supports resolver encoder interface, enabling it to accept signals from resolver-based feedback devices.
Q: What communication options are available on the DMA 85B 7301-D servo drive module?
A: The interface options on this module include CANrho connectivity.
Q: What is the width of the DMA 85B 7301-D servo drive module?
A: The DMA 85B 7301-D features a module width of 100 mm, fitting standard panel layouts.
Q: Are there any additional functions included in the DMA 85B 7301-D module?
A: No additional functions are present on the DMA 85B 7301-D beyond its primary servo drive features.
