DMA 140D 1103-D Bosch Rexroth Indramat
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MPN: 1070086975
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The Bosch Rexroth Indramat DMA 140D 1103-D is part of the DMA Servo Drive Modules series and is designed as a 3-phase module for synchronous and asynchronous motors. This module offers a continuous current of 42 Arms at 4 kHz and 25 Arms at 8 kHz, with peak currents of 141 Arms and 117 Arms respectively. It features a SERCOS control interface, supports one axis positioning, and uses an air cooling method through the backplane.
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Product Description:
The DMA 140D 1103-D is a three-phase servo drive module produced by Bosch Rexroth Indramat for the DMA Servo Drive Modules series. It conditions DC link power and issues controlled current pulses to synchronous or asynchronous motors so that axes follow programmed velocity and torque profiles in industrial automation cells. Integrated one-axis positioning removes the need for an external motion card, and a SERCOS control interface lets the module exchange cyclic commands and feedback with higher-level PLCs over fiber. Installation requires an RMD/DM backplane, where rear-ducted air-cooling channels guide cabinet airflow across the heat sink.
During continuous operation at a 4 kHz switching frequency, the drive delivers 42 Arms to the motor, while the 8 kHz PWM setting limits that level to 25 Arms to manage switching losses. Short-term overload capability reaches a peak of 141 Arms at 4 kHz and 117 Arms at 8 kHz, supplying extra torque for acceleration or impact loads before thermal cutback. Internal link capacitors stabilize a 670 VDC regulated bus so the inverter section sees a steady supply even when mains voltage fluctuates. Air drawn through the backplane removes heat generated by IGBT switching and keeps semiconductor junction temperatures within limits. A standard encoder interface accepts incremental or absolute feedback signals so commutation data and position values are returned to the controller without additional adapter boards.
The upstream rectifier can also furnish a non-regulated bus of 715 VDC when line reactors are omitted, and a separate logic rail demands only 1.58 A at 24 V to power gate drivers, DSP circuitry, and fiber transceivers. High-resolution feedback is recognized: multi-turn absolute encoders are processed with 32 bits of position depth, and single-turn devices with 20 bits, enabling fine contouring for gantries and pick-and-place heads. A 200 mm module width matches DMA mechanical slot spacing so adjacent drives share the same cooling plenum and DC bus straps without custom spacers.
Frequently Asked Questions about DMA 140D 1103-D:
Q: What series does the DMA 140D 1103-D module belong to?
A: The DMA 140D 1103-D is part of the DMA Servo Drive Modules series.
Q: What control interface does the DMA 140D 1103-D support?
A: This module supports a control interface compatible with SERCOS systems.
Q: What is the peak current at 4 kHz for the DMA 140D 1103-D servo drive?
A: The maximum peak current at 4 kHz is 141 Arms for this model.
Q: How is the DMA 140D 1103-D servo drive cooled?
A: Air cooling via the backplane is used for thermal management in this module.
Q: What is the multi-turn resolution of the DMA 140D 1103-D?
A: A multi-turn resolution of 32 bits is available on this drive, allowing for high-precision positioning.
