Rexroth BM-DP12 1070075887-202 Replacement for Indramat

Product Overview

Rexroth BM-DP12 1070075887-202 Replacement for Indramat: Seamless PROFIBUS DP Upgrade Solution

The BOSCH Rexroth BM-DP12 (Part No. 1070075887-202) is a PROFIBUS DP expansion module designed for integration with Indramat servo drive systems, including the widely deployed HDS, HDD, and DDS series drive controllers. As legacy Indramat platforms approach end-of-life and original BM-DP12 units become increasingly scarce, plant engineers and maintenance teams face mounting pressure to source verified replacement modules that preserve existing wiring infrastructure, communication topology, and drive parameterization without triggering a full system redesign.

TOPNLMS maintains ready stock of the BM-DP12 1070075887-202, fully tested and shipped with a 12-month warranty. Each unit undergoes pre-shipment functional verification to confirm PROFIBUS DP communication integrity, slot compatibility, and firmware handshake with the host drive controller before dispatch.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful BM-DP12 replacement rarely occurs in isolation. In most Indramat-based servo systems, the PROFIBUS expansion module works in concert with a broader set of components that must be evaluated during the upgrade or retrofit process.

When replacing the BM-DP12 in an HDS or DDS drive, engineers typically review the condition of the associated Indramat CLM 01.3 or CLM 01.4 controller module, which manages axis coordination and motion sequencing above the drive layer. If the CLM module is also aging or showing communication faults, replacing it alongside the BM-DP12 eliminates the risk of a secondary failure shortly after the primary repair.

The PROFIBUS segment itself should be inspected during the swap. Termination resistors at both ends of the bus, the integrity of the 9-pin D-Sub connectors, and the shielding continuity of the PROFIBUS cable all affect communication reliability after the new module is seated. In installations where the Siemens CP 342-5 or CP 443-5 communication processor is used as the PROFIBUS master on the PLC rack, confirming that the GSD file and station address assignment remain unchanged prevents unnecessary re-commissioning time.

For systems where the Indramat DKC or DKR drive series is present alongside HDS units on the same PROFIBUS segment, the BM-DP12 replacement must be validated against the full network topology. The DKC02.3 and DKR02.1 drives use the same PROFIBUS DP physical layer, and a new module with an incorrect station address or baud rate setting can disrupt the entire segment. TOPNLMS recommends verifying the PROFIBUS node list in the PLC project before powering up the replacement module.

In control cabinets where space is constrained, the BM-DP12’s plug-in card form factor is a significant advantage. Unlike external gateway solutions that require additional DIN rail space and separate 24 VDC power feeds, the BM-DP12 draws power directly from the drive’s internal backplane. This is particularly relevant in compact Indramat drive cabinets where the Rexroth PSI 6000 or similar power supply modules already occupy most of the available rail space.

If the retrofit scope extends to the I/O layer, Rexroth Inline I/O modules (IB IL 24 DI series) connected via INTERBUS or integrated into the PROFIBUS segment may also require firmware or address updates when the master-side communication module is replaced. Similarly, if the system includes a Rexroth IndraControl L or IndraControl V HMI panel communicating over PROFIBUS DP, the HMI project should be verified to ensure the drive’s process data object (PDO) mapping remains consistent after the module swap.

For customers undertaking a broader migration from legacy Indramat to current Rexroth IndraDrive (HCS or HMS series), the BM-DP12 replacement can serve as an interim measure that extends the operational life of the existing servo infrastructure while the full migration is planned and budgeted. TOPNLMS can supply both the BM-DP12 for immediate stabilization and IndraDrive components for the longer-term upgrade path.

Retrofit Guidance FAQ

Q: Can I replace the BM-DP12 without changing the PROFIBUS cable or termination?
A: Yes. The BM-DP12 1070075887-202 uses the same 9-pin D-Sub PROFIBUS interface as earlier revisions. Retain the existing cable, termination resistors, and station address settings. No rewiring is required.

Q: Do I need to update the GSD file in my PLC project after replacement?
A: In most cases, no. The BM-DP12 1070075887-202 is compatible with the original Indramat GSD file. If your PLC project was configured with the original GSD, the replacement module will be recognized without re-importing the device description. Confirm the station address matches the original configuration before going online.

Q: Will the replacement module fit in the same drive slot without mechanical modification?
A: Yes. The BM-DP12 is a plug-in expansion card designed for the Indramat HDS, HDD, and DDS drive expansion slot. The physical footprint and connector alignment are identical to the original module. No bracket modification or additional mounting hardware is required.

Q: What PROFIBUS baud rates are supported?
A: The BM-DP12 1070075887-202 supports all standard PROFIBUS DP baud rates from 9.6 kbit/s up to 12 Mbit/s. The baud rate is auto-detected from the master; no manual configuration is needed on the module itself.

Q: Is the module compatible with Siemens S7-1500 PROFIBUS masters?
A: Yes. The BM-DP12 operates as a standard PROFIBUS DP slave and is compatible with any DP-V0 or DP-V1 compliant master, including Siemens S7-300, S7-400, and S7-1500 with CM 1542-5 or similar PROFIBUS communication modules.

Q: What should I check during commissioning after installing the replacement module?
A: Verify the PROFIBUS station address matches the original, confirm the drive appears in the PLC’s online device list without diagnostic errors, check that process data (speed reference, status word, actual value) is exchanged correctly, and perform a short jog cycle before returning the axis to automatic mode.

Q: Can TOPNLMS supply the module with a specific firmware version?
A: Contact our technical team at [email protected] with your drive firmware version and application requirements. We will confirm compatibility and, where possible, supply a module with a matching or compatible firmware revision.

Warranty Assurance

Every BM-DP12 1070075887-202 shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Our pre-shipment testing protocol includes PROFIBUS communication verification, slot connector inspection, and functional power-on testing to confirm the module is operational before it leaves our facility.

In the event of a confirmed defect within the warranty period, TOPNLMS will arrange a replacement unit or issue a full refund, subject to return inspection. Our technical support team is available via email and phone to assist with installation questions, compatibility verification, and commissioning guidance throughout the warranty period.

We ship globally from Xiamen, China, with standard lead times of 3–7 business days for stocked items. Express shipping options are available for urgent breakdown situations. All shipments include tracking and commercial invoice documentation suitable for customs clearance.

For volume orders, OEM procurement, or long-term supply agreements, contact our sales team directly to discuss pricing, lead times, and quality certification requirements.