LENZE MDSKSRS036-13 Replacement for MDS Series

Product Overview

LENZE MDSKSRS036-13 Replacement for MDS Series: Smooth Transition & Legacy System Compatibility

When your existing LENZE MDS Series servo drive system reaches end-of-life or a critical MDSKSRS036-13 unit fails on the production floor, every hour of unplanned downtime translates directly into lost output and escalating maintenance costs. The LENZE MDSKSRS036-13 is a compact, high-performance AC servo motor from the MDS Series platform — a workhorse found in packaging lines, CNC machining centers, textile machinery, printing presses, and general-purpose motion control cabinets across Europe and Asia. This replacement and upgrade solution is engineered to restore your system to full operation with minimal re-engineering, preserving your existing wiring topology, control architecture, and commissioning investment.

The MDSKSRS036-13 delivers a continuous stall torque matched to the original MDS Series mechanical envelope, with a standard flange interface (IEC 72-1 B5/B14) that fits directly into the existing motor mounting bracket without machining or adapter plates. The shaft diameter, keyway dimensions, and encoder connector pinout are retained from the legacy specification, meaning your existing servo cable assemblies — including the LENZE EWL motor power cable and the EWZ feedback cable — can be reconnected without modification in the vast majority of retrofit scenarios.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful MDSKSRS036-13 retrofit rarely involves the motor alone. In practice, engineers upgrading from a discontinued or damaged MDS Series motor will simultaneously audit the surrounding drive and control architecture to prevent secondary failures. The LENZE 9300 servo inverter (EVS9326-ES or EVS9332-ES) is the most common drive pairing for this motor frame size; if the inverter’s IGBT module or control board has also degraded, sourcing a replacement inverter alongside the motor eliminates the risk of a second unplanned outage within weeks of the motor swap.

On the feedback side, the SinCos encoder cable assembly — typically a LENZE EWZ0015 or EWZ0025 shielded cable — should be inspected for insulation breakdown, especially in high-cycle or high-temperature environments. A degraded feedback cable will cause position drift and drive fault codes (F0011 / F0012 on the 9300 platform) that are frequently misdiagnosed as motor faults. Replacing the cable at the same time as the motor is a low-cost insurance step that experienced maintenance teams routinely include in their bill of materials.

For applications where the MDSKSRS036-13 is integrated into a multi-axis gantry or coordinated motion system, the LENZE E82EV servo controller or the LENZE ECS motion controller may be managing axis synchronization via CANopen DS402 or EtherCAT CoE. In these architectures, the motor replacement does not require any changes to the PLC program or the motion controller’s axis configuration — the motor data set (pole pairs, encoder resolution, rated current, thermal time constant) is stored in the drive’s parameter set and can be reloaded from a backup file using LENZE Global Drive Control (GDC) or EASY Starter software in under ten minutes.

Where the control cabinet also houses a LENZE SMD frequency inverter driving auxiliary axes (conveyor belts, cooling fans, or feed rollers), those units should be checked for capacitor aging if the cabinet is more than eight years old. Electrolytic capacitor degradation in the DC bus section is a leading cause of nuisance trips in aging LENZE SMD and 8200 vector inverter installations. Proactive replacement of aged inverters during a planned motor swap window significantly reduces total maintenance downtime over a 12-month horizon.

Signal integrity between the servo system and the upstream PLC — whether a SIEMENS S7-300, SIEMENS S7-1500, Mitsubishi Q Series, or Omron CJ2M — is maintained through the drive’s fieldbus interface card. CANopen, PROFIBUS-DP, and EtherCAT interface modules for the LENZE 9300 platform are available as plug-in option cards (E82ZAFCC, E82ZAFPC, E82ZAFC) and do not need to be replaced during a motor swap unless physical damage is present. The PLC program, including all motion function blocks, axis parameters, and safety interlocks, remains fully intact.

For installations requiring signal isolation between the servo drive’s analog reference input and the PLC analog output module — particularly in environments with significant ground potential differences or high-frequency VFD noise — a DIN-rail signal isolator (such as a Phoenix Contact MINI MCR or a Weidmüller WAS4 module) is recommended as part of the retrofit bill of materials. This is especially relevant in older cabinets where the original EMC shielding design predates modern servo drive noise specifications.

Retrofit Guidance FAQ

Q: Can I reuse my existing motor power and feedback cables?
A: In the vast majority of cases, yes. The MDSKSRS036-13 uses the same LENZE EWL power connector and EWZ feedback connector as the legacy MDS Series motors. Verify cable length and insulation condition before reuse. If the cable has been routed through a cable chain (energy chain) for more than five years in a high-cycle application, replacement is recommended as a precaution.

Q: Do I need to modify my PLC program after replacing the motor?
A: No. The MDSKSRS036-13 is a drop-in replacement within the MDS Series platform. The drive’s motor data set (stored in the LENZE 9300 or EVS inverter) covers all motor-specific parameters. Reload the parameter backup from your GDC or EASY Starter project file and perform a standard auto-tuning cycle. No changes to the PLC ladder logic, function block diagram, or motion profile are required.

Q: Is the communication protocol affected by the motor replacement?
A: No. CANopen DS402, PROFIBUS-DP, and EtherCAT CoE communication is handled entirely by the drive’s fieldbus interface card, not the motor. The motor replacement is transparent to the network layer. Your PLC’s axis object dictionary entries and process data mappings remain unchanged.

Q: Will the motor fit in the existing mounting space?
A: Yes. The MDSKSRS036-13 shares the same IEC 72-1 B5/B14 flange dimensions and overall length as the original MDS Series motor of the same frame size. No cabinet modification, bracket fabrication, or coupling adapter is required. Verify the shaft key dimensions match your existing coupling before installation.

Q: What if my original motor’s encoder resolution differs from the replacement?
A: The encoder resolution (pulses per revolution) is a parameter stored in the drive, not hardwired into the system. If the replacement unit’s encoder specification differs from the original, update the encoder resolution parameter in the drive’s motor data set using GDC or EASY Starter. The PLC program does not need to be modified — the drive handles the scaling internally.

Q: How long does commissioning take after a motor swap?
A: For a like-for-like replacement with an existing parameter backup, commissioning typically takes 30–90 minutes including mechanical installation, cable reconnection, parameter reload, and a short auto-tuning run. First-time commissioning without a parameter backup may take 2–4 hours depending on the complexity of the motion profile.

Warranty Assurance

Every LENZE MDSKSRS036-13 unit shipped by TOPNLMS is covered by a 12-month warranty from the date of shipment. Prior to dispatch, each unit undergoes a pre-shipment functional test including insulation resistance measurement, no-load run verification, and encoder signal integrity check. Test records are retained and available upon request.

In the event of a warranty claim, TOPNLMS provides a replacement unit or full refund within the warranty period. Our technical support team responds to warranty inquiries within one business day. For urgent production-critical situations, expedited replacement dispatch is available — contact us directly to discuss priority handling.

Units are shipped from Xiamen, China, with full export documentation, commercial invoice, and packing list. Standard lead time is 3–7 business days for in-stock units. Express air freight options (DHL, FedEx, UPS) are available for time-critical orders. All units are packed in anti-static foam with moisture-barrier packaging to ensure safe transit.

TOPNLMS maintains a standing inventory of MDS Series components and related LENZE drive system parts to support ongoing maintenance programs. Volume pricing and blanket purchase order arrangements are available for OEM customers and maintenance contractors managing multi-site installations.