MHD090B-035-NP0-UN Bosch Rexroth Indramat

MPN: R911277130

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The Bosch Rexroth Indramat MHD090B-035-NP0-UN is a servo motor from the MHD Synchronous Motors series. It features a continuous standstill torque of 12.0 Nm and uses liquid cooling for the housing. This motor comes with a 140 mm flange size, a keyed shaft with a shaft seal, and is equipped with digital servo feedback for relative position detection.

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Product Description:

The MHD090B-035-NP0-UN is a servo motor manufactured by Bosch Rexroth Indramat within the MHD Synchronous Motors series. The device provides controlled rotary motion for positioning, indexing, and synchronized drives found in automated production lines. It interfaces with a compatible drive controller to supply high-density torque and maintain repeatable shaft angles, making it suitable for tightly regulated mechanical sequences. Because it is used in closed-loop motion systems, the motor can respond quickly to command changes while maintaining stable rotary movement during changing load conditions.

At the stator, the motor can deliver a continuous standstill torque of 12.0 Nm, enabling stable holding force during low-speed or static phases of the cycle. Mechanical attachment uses a 140 mm square flange, so the frame aligns with standardized machine mountings. Position feedback is produced by digital servo feedback (HSF), giving high-resolution incremental data to the drive for speed and position control. Thermal energy is removed by liquid cooling, allowing the motor to sustain rated output without relying on ambient airflow. This cooling method transfers heat to a circulating coolant path rather than depending on cabinet air movement. The power connector housing can be rotated through 270°, which helps route cables in confined installations. The feedback system uses relative position detection. The motor is built in size 090 and is supplied without a holding brake.

The motor body centers on a 110 mm pilot to keep the stator concentric with the driven load, and its rotor transmits torque through a keyed shaft that accepts standard couplings while a shaft seal helps limit lubricant migration into the bearing chamber. For installations that share a common manifold, the housing length follows code B. Electrical phases are supplied through power and feedback connectors, which keep the motor interfaces organized at the housing. Winding code 035 marks the coil arrangement used for this version and corresponds to the electrical characteristics expected by compatible drive systems. The shaft seal helps protect the bearing area from contamination during routine machine operation.

Centering diameter
110 mm
Continuous Torque at Standstill
12.0 Nm
Encoder Type
Digital servo feedback (HSF)
Flange size
140 mm
Holding Brake
Without holding brake
Housing Cooling Type
Liquid cooling
Motor Length
B
Motor Size
090
Power Connection Direction
turnable within a range of 270°
Power Connection Type
Power and feedback connectors
Product Type
Servo Motor
Shaft Design
Keyed Shaft
Shaft Seal
Yes
Type of Position Detection
Relative
Winding Code
035
  • MHD090B035NP0UN
  • MHD090B 035 NP0 UN
  • mhd090b-035-np0-un
  • MHD90B-035-NP0-UN
Drive / motor message What it means Corrective action
F218 – Heatsink over-temperature shutdown The drive’s internal heatsink exceeded its safe limit (≈ 95 °C) and switched off to prevent damage.  Let the unit cool, clear dust from fins, improve cabinet airflow, and verify the fan (if fitted).
F219 – Motor over-temperature shutdown PTC/NTC sensor in the motor signalled > 155 °C.  Reduce mechanical load, check ambient ≤ 40 °C, inspect cooling path or external blower.
F220 – Bleeder/regen resistor overload Dynamic-braking resistor became too hot. Lengthen deceleration ramps, install larger or forced-air resistor, verify wiring.
F221 – Motor-temperature surveillance defective Temperature sensor open/short or monitor circuit fault. Test PTC leads, repair cable, replace sensor if resistance is out of range.
F226 – DC-bus undervoltage Link voltage fell below minimum; drive shut down.  Check mains fuses and wiring, measure incoming VAC, inspect power-supply module.
F230 – Encoder 1 max-frequency exceeded Resolver/encoder frequency above interface limit (usually due to overspeed or noise). Verify speed parameters, check for runaway axis, replace damaged feedback cable.
F234 – Emergency-stop activated +24 V control dropped at the E-Stop input. Inspect E-Stop chain, reset safety relay, restore control-voltage feed.
F236 – Excessive position-feedback difference Two encoder values disagree beyond window S-0-0391.  Realign external encoder, correct resolution parameters, check mechanical backlash.
F242 – Encoder 2 signal too small Optional external encoder sine/cosine amplitude < 1 V.  Replace or re-route cable, improve shielding, confirm encoder supply voltage.
F401 – Double MST error shutdown Drive missed two SERCOS master-sync telegrams and halted.  Clean/replace fibre-optic leads, reduce loop length/attenuation, reseat SERCOS plugs.
Model Frame size Continuous torque (Nm) Rated / max speed (RPM) Holding brake Feedback type Cooling
MHD090B-035-NP0-UN (base) 090-B 12 5 000 max  No Digital SF (HSF, relative)  Liquid-cooled housing 
MHD090B-035-NG0-UN 090-B 12 3 000 rated  No Digital SF (HSF, relative)  Liquid cooling 
MHD090B-035-PG0-UN 090-B 12 5 000 max  No Digital SF absolute (> 4 096 rev)  Liquid cooling 
MHD090B-035-NP1-UN 090-B 12 5 000 max*  Yes (≈ 11 Nm)  Digital SF relative  Liquid / natural
MHD090B-058-NP0-UN 090-B 13.4 (surface) / 8.9 (natural) 4 000 rated, 5 000 max No Digital SF relative  Natural or surface-fan 
MHD093A-058-NP0-AA 093-A 13.6 (max) 3 500 rated, 6 000 max  No Digital SF relative  Natural / surface 
Error code Meaning
F218 Amplifier heatsink over-temperature shutdown 
F219 Motor over-temperature shutdown 
F220 Bleeder (braking-resistor) overload shutdown 
F221 Motor-temperature surveillance defective 
F226 DC-bus undervoltage 
F230 Encoder 1 max-frequency exceeded (indramat.net)
F234 Emergency-stop / +24 V lost 
F236 Excessive position-feedback difference 
F242 Encoder 2 failure – signal too small 
F401 Double MST (lost SERCOS sync) shutdown 

Frequently Asked Questions about MHD090B-035-NP0-UN:

Q: What is the continuous torque at standstill for the MHD090B-035-NP0-UN?

A: The MHD090B-035-NP0-UN motor features a continuous standstill torque of 12.0 Nm.

Q: What type of encoder does the MHD090B-035-NP0-UN use?

A: This model uses digital servo feedback (HSF) for its encoder type.

Q: What is the shaft design of the MHD090B-035-NP0-UN motor?

A: The shaft on this motor is designed with a key and includes a shaft seal.

Q: How is the MHD090B-035-NP0-UN housing cooled?

A: Liquid cooling is used for housing temperature management on the MHD090B-035-NP0-UN.

Q: Is a holding brake included with the MHD090B-035-NP0-UN motor?

A: The MHD090B-035-NP0-UN does not come with a holding brake.


Internal Product Review

  • ‘‘The MHD090B-035-NP0-UN is a servo motor that stands out with liquid cooling and 12.0 Nm continuous torque at standstill. Digital servo feedback (HSF) paired with relative position detection gives the motor dependable feedback behavior for controlled axis performance. A power connection turnable through 270° simplifies installation, making this unit a strong fit for demanding motion applications.’’

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