DMA 140D 7101-D Bosch Rexroth Indramat
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MPN: 1070085672
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The Bosch Rexroth Indramat DMA 140D 7101-D is a 3-phase servo drive module for synchronous and asynchronous motors, part of the DMA Servo Drive Modules series. It features air cooling via backplane, supports single-turn or multi-turn encoders, and has a rated current of 60 Arms with a maximum current of 117 Arms at an 8 kHz switching frequency. The module uses a 715 VDC non-regulated DC link voltage, operates with a CANrho interface, and weighs 19.3 kilograms.
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Product Description:
The DMA 140D 7101-D is a servo drive module manufactured by Bosch Rexroth Indramat for the DMA Servo Drive Modules series. As a 3-phase module for synchronous and asynchronous motors, it converts DC link energy into precisely modulated phase currents that control industrial axes. The unit mounts on an RMD/DM backplane within a modular cabinet and supports one-axis positioning, letting a controller execute point-to-point moves without an external motion card. In automated assembly lines, this drive forms the power stage that links a motion controller to the motor windings.
During operation, the drive draws 1.58 A from the 24 V auxiliary bus to power logic, relays, and fans. Its non-regulated DC link can reach 715 VDC, while the regulated section stabilizes at 670 VDC to supply the output bridge. At the factory-set switching frequency of 8 kHz, the current loops deliver up to 117 Arms in open-loop mode, with a continuous closed-loop capability of 60 Arms. These ratings allow the module to start large synchronous torque motors yet maintain nominal current without thermal stress. Current derating above 45 °C is specified at 1.75 A per kelvin, so cabinet ventilation planning must account for ambient rises toward the 55 °C limit.
Thermal control is managed by air cooling through the backplane; with a maximum internal dissipation of 700 W, the drive relies on cabinet airflow to evacuate heat. The housing spans 200 mm across the rack and weighs 19.3 kg, dimensions that must be considered when sizing the carrier rail. Communication to system controllers occurs over the CANrho interface, and the feedback port accepts single-turn or multi-turn encoders to support its integrated one-axis positioning function. These features let the DMA module synchronize servo or induction motors without adding external motion hardware.
Frequently Asked Questions about DMA 140D 7101-D:
Q: What is the 24 V supply demand for the DMA 140D 7101-D drive?
A: The DMA 140D 7101-D servo drive module requires a 24 V supply at 1.58 A for operation.
Q: What types of encoders are compatible with the DMA 140D 7101-D?
A: This module supports single-turn or multi-turn encoders for feedback.
Q: What is the maximum current output of the DMA 140D 7101-D module?
A: The DMA 140D 7101-D provides a maximum output current of 117 Arms when using 8 kHz open loop operation.
Q: How is the DMA 140D 7101-D servo drive module cooled?
A: Air cooling through the backplane is used to manage thermal conditions in this drive module.
Q: Which communication interface does the DMA 140D 7101-D support?
A: This module utilizes the CANrho interface for communication.
