Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Bosch Rexroth Indramat |
| Model | TDM3.2-20-300-W0 |
| Product Type | AC servo drive module |
| Drive Series | TDM 3.2 |
| Type Current | 20 A |
| Peak Current | 20 A |
| Continuous Current | 15 A |
| DC Link Voltage | 300 VDC ±15% |
| Continuous Power Rating | 6 kW |
| Power Loss at Continuous Current | 110 W |
| Cooling Method | Natural convection |
| Operating Temperature | +5°C to +45°C at rated data |
| Maximum Ambient Temperature | +55°C with derating |
| Storage / Transport Temperature | -30°C to +85°C |
| Installation Altitude | Up to 1,000 m without derating |
| Protection Rating | IP10 |
| Insulation Category | C |
| Weight | Approximately 8 kg |
These values are documented in the Indramat TDM technical-data table. The 110 W figure is power loss, not output power.
Product Introduction
The Bosch Rexroth Indramat TDM3.2-20-300-W0 is an axis-level servo amplifier used in legacy CNC machines and industrial motion-control equipment. It receives power through a shared 300 VDC link and regulates the motor output for compatible MAC permanent-magnet servo motors. Its 20 A peak and 15 A continuous ratings define its electrical operating range.
The W0 designation identifies the natural-convection cooling version. The drive also uses a plug-in MOD programming module containing motor-specific operating parameters. Correct matching of the programming module, amplifier, and motor is necessary before commissioning.
TDM3.2-20-300-W0
Application Scenarios & Field Pitfalls
Typical applications
- CNC machine tools: Servo control for feed axes and positioning mechanisms using compatible MAC motors.
- Automated production machinery: Regulates motor speed and torque in machine sequences requiring repeatable positioning.
- Packaging equipment: Supports controlled motion in legacy machinery with Indramat modular drive cabinets.
- Industrial automation retrofits: Replaces an existing TDM3.2 drive where the original motor and DC-link architecture remain in service.
Field checks before replacement
- Verify the MOD programming module. The module must identify the correct controller and motor. The Indramat manual warns that an incorrect module can cause reduced performance or equipment damage.
- Check the current limits. The 20 A peak rating is not a continuous rating. The documented continuous current is 15 A.
- Confirm the DC-link voltage. The drive requires a compatible nominal 300 VDC link. Check polarity, bus connections, and the supplying power module.
- Maintain natural-convection airflow. W0 does not use the forced-ventilation arrangement of the TDM3.2-030-300-W1. Do not obstruct the cooling surfaces or install the module in a poorly ventilated cabinet.
- Inspect motor feedback wiring. Verify the BLC rotor-position signals, tachometer feedback, motor phases, and cable shielding against the original wiring documentation.
- Observe discharge precautions. The manufacturer’s installation documentation warns of hazardous DC-link voltage and specifies a discharge period exceeding one minute after switch-off. Verify the actual bus voltage before handling connections.
Related Products
These models belong to the Indramat TDM drive family or its associated power architecture. They are not automatic substitutes.
- TDM3.2-030-300-W1 – 30 A version with 25 A continuous current and forced-ventilation cooling.
- TDM3.3-020-300-W0 – Related family model; verify its control and safety configuration before substitution.
- .3-030-300-W1 – Higher-current family version with forced ventilation.
- TDM1.2-100-300-W1 – Higher-current TDM1 servo amplifier with a different series configuration.
- TVM2.4-050-220/300-W1 – Central power supply module for a compatible DC-link system; not an axis servo amplifier.
- MAC 090A – Motor type shown in an Indramat manual example using a .2-020-300-W0 and a matching MOD programming module. This example does not establish compatibility with every MAC 090A variant.
Procurement and Replacement Notes
Before purchasing, request photographs of the complete drive nameplate, serial number, terminal connections, and installed MOD programming module. Confirm that the replacement is the W0 natural-convection version rather than a visually similar W1 forced-ventilation unit.
Replacement checklist:
- Exact model: .2-20-300-W0
- 20 A peak and 15 A continuous current ratings
- 300 VDC link compatibility
- Natural-convection cooling arrangement
- Correct MOD programming module for the installed motor
- Motor feedback and power-cable compatibility
- Functional test documentation
Important: A matching TDM model number does not establish that the installed motor parameters are correct. Verify the MOD module and motor designation before applying power.
