TBM 1.2-40-W1/024 Bosch Rexroth Indramat
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MPN: R911246463
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The Bosch Rexroth Indramat TBM 1.2-40-W1/024 belongs to the TBM Bleeder Modules series and provides a continuous bleeder power of 2.25 kW with a peak bleeder power of 50 kW. It operates with a blower supply voltage of 24 VDC and blower supply current of 140 mA. The module has dimensions of 390 mm in height, 105 mm in width, and 208 mm in depth.
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Product Description:
The TBM 1.2-40-W1/024 bleeder module created by Bosch Rexroth Indramat belongs to the TBM Bleeder Modules series. It is designed to divert and dissipate excess DC-bus energy that accumulates in servo drive systems during braking phases, preventing over-voltage events and protecting connected inverters. By converting regenerated electrical energy into heat through its internal resistor stack and blower, the unit supports stable operation of multi-axis automation cells and motion platforms that experience frequent deceleration cycles.
Maintaining thermal balance starts with its peak capability of 50 kW, a short-term absorption rating that handles sudden energy bursts during emergency stops. For continuous dumping the resistor assembly is rated at 2.25 kW, enabling drives to bleed power without excessive temperature rise. The module can take up to 114 kWs of regenerated energy before its internal temperature limit is reached. Forced air cooling is provided by a blower that runs on 24 VDC and draws 140 mA, ensuring airflow even when the main bus is idle. Connection blocks for blower and control signals are placed at the base to shorten internal runs, and the DC-bus link may be as long as 1 m, simplifying cabinet layout.
Physical proportions are optimized for cabinet mounting: depth is 208 mm, width is 105 mm, and height reaches 390 mm. To prevent recirculation of warm exhaust, Bosch Rexroth Indramat prescribes 40 mm of side or front clearance and 200 mm above the housing. The power terminals accept wires up to 6 mm², providing a low-resistance path for high pulse currents delivered during bleeder engagement. Separate blower leads share the smaller 2.5 mm² cross-section, while EB monitoring cables can be as small as 1.5 mm². These dimensional and wiring allowances help integrators position the module close to servo inverters so voltage drop on the DC link remains minimal.
Frequently Asked Questions about TBM 1.2-40-W1/024:
Q: What is the peak bleeder power capability of the TBM 1.2-40-W1/024?
A: The TBM 1.2-40-W1/024 supports a peak bleeder power of 50 kW, allowing it to handle high energy dissipation during brief overload conditions.
Q: What is the continuous bleeder power rating of the TBM 1.2-40-W1/024?
A: The continuous bleeder power rating for this model is 2.25 kW, ensuring reliable operation during normal energy dissipation cycles.
Q: What is the blower supply voltage required for the TBM 1.2-40-W1/024?
A: The TBM 1.2-40-W1/024 operates with a blower supply voltage of 24 VDC for its cooling system.
Q: How much regenerated energy can the TBM 1.2-40-W1/024 handle?
A: This module can absorb a maximum regenerated energy of 114 kWs, enabling safe dissipation during system braking events.
Q: What is the maximum allowable length for the DC bus cable on TBM 1.2-40-W1/024?
A: The DC bus cable connected to the TBM 1.2-40-W1/024 should not exceed a length of 1 meter.
