DMA 140D 6311-D Bosch Rexroth Indramat
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MPN: 1070085671
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The Bosch Rexroth Indramat DMA 140D 6311-D is a 3-phase servo drive module from the DMA Servo Drive Modules series. It features a maximum current of 141 Arms at 4 kHz and supports positioning control as an additional function. The module uses air cooling through the backplane, has a 24 V power demand of 1.58 A, and supports a resolver encoder interface with a resolution of 12 bits.
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Product Description:
The DMA 140D 6311-D is a servo drive module from Bosch Rexroth Indramat in the DMA Servo Drive Modules series. As a three-phase module for synchronous and asynchronous motors, it regulates armature current and voltage to execute speed or torque control loops in machine tools, material-handling axes, and general automation equipment. The unit also supports an additional positioning control function, allowing connected motors to follow motion profiles from supervisory PLCs while maintaining feedback through a resolver interface built into the drive.
At a pulse frequency of 4 kHz in open-loop mode, the module can deliver a peak phase current of 141 Arms; when the carrier is raised to 8 kHz, the peak capability drops to 117 Arms. In closed-loop operation, the module delivers a continuous 87 Arms at 4 kHz or 60 Arms at 8 kHz, aligning the thermal load with the integrated backplane air-cooling path. A derating slope of 2.25 A per kelvin applies between 45 °C and 55 °C, so cabinet ventilation must compensate for ambient rise. The non-regulated DC link reaches 715 VDC, sourced from the common supply section and buffered by internal capacitors. The housing spans 200 mm across the rack, leaving neighboring slots free for accessory modules.
During steady-state operation, the regulated bus is held at 670 VDC and the total conversion loss is limited to 700 W, figures that guide cabinet heat extraction design. The control electronics require only 1.58 A from the 24 V auxiliaries, which eases sizing of the logic power supply. The drive weighs 19.3 kg, which should be considered when planning rack installation and support. Command data enter through a PROFIBUS-DP setpoint interface, while resolver feedback with 12-bit resolution closes the velocity and position loops for the standard variant. These communication and feedback channels support the embedded positioning control function without external controllers or separate feedback processing hardware.
Frequently Asked Questions about DMA 140D 6311-D:
Q: What is the rated current output at 4 kHz closed loop for the DMA 140D 6311-D servo drive?
A: This DMA 140D 6311-D module provides a rated current of 87 Arms when operating at 4 kHz closed loop.
Q: What type and resolution of encoder interface does the DMA 140D 6311-D support?
A: The encoder interface used by the DMA 140D 6311-D is a resolver with 12-bit resolution.
Q: What is the maximum power loss for the DMA 140D 6311-D servo drive?
A: The DMA 140D 6311-D has a maximum power loss of 700 W during operation.
Q: Which setpoint interface is provided on the DMA 140D 6311-D drive module?
A: PROFIBUS-DP is the setpoint interface available on the DMA 140D 6311-D model.
Q: What cooling method is used in the DMA 140D 6311-D servo drive module?
A: Air cooling through the backplane is the designated cooling method for the DMA 140D 6311-D.
