REXROTH TDM2.1-030-300-W1 Servo Controller | Replacement, Equivalent & Selection Guide
The Rexroth TDM2.1-030-300-W1 is a high-performance AC servo drive from Bosch Rexroth’s DIAX02 / DIAX03 series, designed for precision motion control in demanding industrial automation environments. This page provides full technical specifications, compatible replacement options, application guidance, and sourcing information to help engineers and procurement teams make confident decisions.
Technical Specifications
- Manufacturer: Bosch Rexroth
- Part Number / SKU: TDM2.1-030-300-W1
- Series: DIAX02 / TDM (Transistor Drive Module)
- Continuous Output Current: 30 A
- Peak Output Current: 300 A (brief peak)
- Supply Voltage: 3-phase AC 200–480 V (±10%)
- Control Interface: SERCOS / Analog / Digital (firmware-dependent)
- Cooling: Forced air (W1 = internal fan)
- Feedback Compatibility: Resolver, EnDat, Hiperface, Incremental encoder
- Protection Class: IP20
- Weight: ~2 kg
- Communication: SERCOS fiber optic ring (optional)
- Certifications: CE, UL (region-dependent)
Compatible Replacement & Equivalent Models
When the TDM2.1-030-300-W1 is discontinued, damaged, or unavailable, the following models are commonly evaluated as replacements. Always verify firmware, feedback type, and bus interface before substitution.
- Rexroth TDM2.1-030-300-W0 – Same current rating, different cooling variant; verify thermal envelope.
- Rexroth HDS02.2-W040N – DIAX04 series upgrade path; higher power density, requires firmware migration.
- Rexroth HDS03.2-W040N – Next-generation DIAX04 with enhanced diagnostics; drop-in for many TDM2.x applications.
- Rexroth DKC02.3-040-7-FW – EcoDrive series; suitable for simpler motion profiles; lower cost alternative.
- Siemens SIMODRIVE 611 / 6SN1123 – Cross-brand alternative for multi-axis retrofit projects; requires re-engineering of bus topology.
- Fanuc α Series Servo Amplifier – Applicable in CNC retrofit scenarios; requires motor and encoder re-matching.
Note: Cross-brand replacements require full system re-commissioning. Konmask recommends original Rexroth units or verified DIAX-series equivalents for minimal downtime.
Why Choose the Original Model
- Proven Reliability: TDM2.1 series has decades of field deployment in automotive, machine tool, and press applications.
- Seamless Integration: Direct plug-in compatibility with existing DIAX02/03 power supply modules (TVD, TVM, KDV series).
- Firmware Continuity: Retains existing IndraWorks / BTV04 parameterization without re-engineering.
- Reduced Commissioning Risk: No motor re-matching or bus reconfiguration required.
- OEM Warranty Compliance: Maintains machine builder warranty and CE declaration of conformity.
Typical Applications
- CNC machining centers and turning lathes
- Injection molding machines (clamp and injection axes)
- Stamping and forming presses
- Packaging and labeling lines
- Textile and printing machinery
- Robotics and gantry systems
- Semiconductor handling equipment
System Compatibility
The TDM2.1-030-300-W1 is designed to operate within the Rexroth DIAX modular drive system. Confirm the following before installation:
- Power Supply Module: Compatible with TVD1.3, TVM1.2, KDV1.3, KDV2.2 supply units.
- Motor Compatibility: MKD, MHD, MKE, 2AD series Rexroth servo motors with matching feedback.
- Controller Interface: Rexroth DIAX02/03 CLC, CSH, CSB, or third-party SERCOS master (Siemens 840D, Fanuc 0i, etc.).
- Firmware Version: Verify firmware variant (FWA-DIAX02-xxx) matches motor and control card combination.
- DC Bus Sharing: Supports common DC bus configuration with other TDM/HDS modules on the same supply.
Selection Guide
Use the following criteria to confirm the TDM2.1-030-300-W1 is the correct drive for your application, or to identify the best alternative:
- Step 1 – Verify Current Rating: Confirm motor continuous and peak current requirements match 30 A / 300 A ratings.
- Step 2 – Check Feedback Type: Identify encoder/resolver type on the motor nameplate (resolver, EnDat 2.1/2.2, Hiperface, TTL).
- Step 3 – Confirm Bus Interface: Determine if your CNC/PLC uses SERCOS, analog ±10 V, or digital I/O command interface.
- Step 4 – Validate Power Supply: Ensure existing supply module (TVD/TVM/KDV) has sufficient capacity for the added axis.
- Step 5 – Check Firmware Variant: Match FWA firmware code to motor series and control card type.
- Step 6 – Cooling & Mounting: W1 suffix = internal fan; confirm cabinet airflow and mounting orientation (vertical).
Not sure which model fits your system? Contact our technical team with your motor nameplate data and machine model for a free selection consultation.
Quality Assurance & Sourcing
- Sourcing: Units sourced from authorized distributors, OEM surplus, and certified refurbishers.
- Inspection: Each unit undergoes visual inspection, power-on functional test, and parameter verification before shipment.
- Condition Options: New (factory sealed), Refurbished (tested & warranted), Used (as-is with inspection report).
- Warranty: 12-month warranty on new and refurbished units; 90-day warranty on used units.
- Traceability: Serial number and firmware version documented on all shipments.
- Export Compliance: All shipments comply with applicable export control regulations (EAR/ECCN).
How to Order
- Online: Add to cart directly on this page. Bulk pricing available for orders of 3+ units.
- Email: [email protected] – include part number, quantity, required condition, and delivery timeline.
- Phone / WhatsApp: +0086 19859288691 (Mon–Fri, 09:00–18:00 CST)
- Lead Time: In-stock units ship within 1–3 business days; sourced units 5–15 business days.
- Payment: T/T (wire transfer), PayPal, credit card via Shopify Payments.
- Shipping: DHL Express, FedEx International, sea freight for bulk orders.
Replacement & Compatibility FAQ
Q: Can I replace TDM2.1-030-300-W1 with a TDM2.1-030-300-W0?
A: Yes, in most cases. The W0 and W1 differ only in cooling method. Verify cabinet thermal design supports the W0 variant’s cooling requirements.
Q: Is the TDM2.1-030-300-W1 still in production?
A: This model is in the mature/end-of-life phase. Bosch Rexroth recommends migration to the IndraDrive (HCS/HMS) series for new designs. Konmask maintains stock of original units for maintenance and repair.
Q: Can I use a DIAX04 (HDS) drive as a direct replacement?
A: Electrically compatible in many configurations, but firmware migration and possible motor feedback adapter may be required. Contact us for a migration assessment.
Q: Do you provide parameter backup / restore service?
A: Yes. We offer parameter cloning service for TDM2.x drives. Provide your original drive or parameter file and we will pre-configure the replacement unit.
Q: What is the difference between TDM2.1 and TDM1.2?
A: TDM2.1 is a second-generation module with improved current capacity, enhanced diagnostics, and broader motor compatibility compared to the TDM1.2 series.
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Contact: [email protected] | +0086 19859288691
