An exact replacement motor cannot be selected from the available nameplate data alone. The evidence identifies the existing Indramat motor and a SIMODRIVE 611 designation, but it does not establish the drive’s supported feedback interface, electrical limits, mechanical dimensions, or Siemens motor compatibility list.
Recorded motor and drive data
| Item | Recorded value | Selection significance |
|---|---|---|
| Existing motor | Indramat MAC 112A-0-LD-2-C/130-A-0 | Use as the baseline for electrical, feedback, and mechanical comparison. |
| Continuous current | 31 A | A candidate motor and drive combination must support the required continuous operating point. |
| Peak current | 130 A | Do not treat this as continuous current or convert it to RMS without a waveform and duty cycle. |
| Maximum speed | 3000 min⁻¹ | Confirm that the replacement meets the required shaft-speed range. |
| Protection | IP65 | Preserve this enclosure requirement if the installation environment requires it. |
| Motor EMF | 0.35 V·s/rad | Verify the transcription and compare it with the drive’s permitted motor voltage behavior. |
| Tacho EMF | 0.0286 V·s/rad | Indicates that feedback compatibility must be checked explicitly. |
| Recorded SIMODRIVE designation | 6SN1145-1BA0260CA2 | Verify this transcription directly from the equipment label before requesting a compatibility check. |
Resolve the ambiguous nameplate fields
The source also records “DAUER MD 9.75” and “MD KONST 0.35 NM/A.” These appear to describe continuous torque and a torque constant, but the first field has no clearly recorded unit and the label transcription has not been verified. Do not use 9.75 as a confirmed torque value until the original nameplate or motor documentation establishes its unit.
The application includes indexing a shaft approximately 100 mm in diameter and 2500 mm long while milling opposing keyways. Those dimensions describe the workpiece, not the required motor torque. Motor sizing still requires the divider ratio, reflected inertia, acceleration profile, cutting load, holding requirement, and duty cycle.
Build the compatibility envelope
- Photograph and transcribe every order number on the SIMODRIVE 611 modules, including any suffixes; confirm whether the recorded string
6SN1145-1BA0260CA2is complete and correctly separated. - Identify the installed motor-feedback connection and the control hardware that processes it. Match the feedback type and signal characteristics before comparing torque or frame size.
- Confirm the drive’s permitted continuous current, peak current, motor voltage behavior, speed range, and overload conditions from documentation for the exact installed modules.
- Record the existing motor’s flange, pilot, shaft, mounting orientation, connector arrangement, brake configuration, and available installation space.
- Determine required continuous torque, acceleration torque, peak duration, and repetition period from the divider mechanics and machining cycle.
- Submit the verified drive configuration and completed requirements to an authorized Siemens service channel or qualified retrofit supplier for an exact supported motor combination.
Verify before purchasing
Reject any candidate selected only because it is a Siemens motor from approximately the same production period or has a similar physical size. Written compatibility must cover the exact drive modules, control hardware, feedback system, motor winding, current limits, maximum speed, and required mechanical adaptation.
After installation, verify feedback polarity and direction at low speed, confirm commanded and actual motion agree, check current during acceleration and cutting, and test the complete indexing cycle. Do not accept the retrofit until continuous and peak demands remain within the documented limits of the confirmed motor-drive combination.
FAQ
Which Siemens motor is compatible with this SIMODRIVE 611?
The evidence does not identify an exact compatible Siemens motor. Verify the full SIMODRIVE module order numbers, feedback interface, electrical limits, and mechanical requirements before selecting a part number.
Can a 130 A Siemens servo replace the Indramat motor?
Not from that value alone. The recorded Indramat ratings are 31 A continuous and 130 A peak; compatibility also requires the correct feedback, voltage behavior, speed, torque duty, and mechanical interface.
What must be checked on the Indramat MAC 112A motor?
Confirm the full designation MAC 112A-0-LD-2-C/130-A-0, 31 A continuous current, 130 A peak current, 3000 min⁻¹ maximum speed, IP65 protection, both recorded EMF constants, and the unit associated with “DAUER MD 9.75.”