Description
Rexroth CDB02.1B-ET-EC-EC-NN-NN-NN-NN-NN-FW – IndraDrive Double-Axis Control Section
Product Overview
The Rexroth CDB02.1B-ET-EC-EC-NN-NN-NN-NN-NN-FW is a BASIC double-axis control section for the Bosch Rexroth IndraDrive platform. It is designed to work with a compatible power section and provides the processing, communication, feedback evaluation, and control functions required for two-axis motion applications. The type code specifies MultiEthernet master communication and two multi-encoder interfaces, one for each axis, while the remaining optional interfaces are not equipped. Bosch Rexroth documentation identifies the CDB02.1B as a double-axis control section with 14 digital inputs, eight configurable digital I/O channels, two analog inputs, and two analog outputs.
Technical Specifications — CDB02.1B-ET-EC-EC-NN-NN-NN-NN-NN-FW
| Parameter | Value |
|---|---|
| Product Model | CDB02.1B-ET-EC-EC-NN-NN-NN-NN-NN-FW |
| Manufacturer | Bosch Rexroth |
| Product Type | IndraDrive double-axis BASIC control section |
| Communication | MultiEthernet |
| Axis Configuration | 2-axis |
| Interface 1 | Multi-encoder interface |
| Interface 2 | Multi-encoder interface |
| Interface 3 | Not equipped |
| Safety Interfaces | Not equipped |
| Digital Inputs | 14, including 4 probe inputs |
| Configurable Digital I/O | 8 |
| Analog Inputs | 2 |
| Analog Outputs | 2 × ±10 V |
| Mounting | IndraDrive power section |
| Cooling | Natural convection |
| Weight | Approx. 0.48 kg |
| Firmware | Must be ordered separately |
The final FW designation indicates that firmware must be ordered as a separate subposition. The control section is a separate component that plugs into the appropriate IndraDrive power section.

Rexroth CDB02.1B-ET-EC-EC-NN-NN-NN-NN-NN-FW
Key Features and Benefits — CDB02.1B-ET-EC-EC-NN-NN-NN-NN-NN-FW
- Double-axis motion-control architecture
- MultiEthernet master communication
- Two dedicated multi-encoder interfaces
- 14 digital inputs with four probe inputs
- Eight configurable digital I/O channels
- Two analog inputs and two ±10 V analog outputs
- Standard control-panel support
- Designed for cabinet-based IndraDrive systems
- Suitable for machine tools, packaging, handling, and other multi-axis automation equipment
The two encoder interfaces are particularly important when maintaining a dual-axis system. A different CDB configuration with additional encoder or safety interfaces should not automatically be considered interchangeable.
Related Models
Rexroth CDB02.1B-ET-EC-EC-EC-NN-NN-EC-NN-FW: A more extensively configured version with additional multi-encoder interfaces.
Rexroth CDB02.1B-ET-EC-EC-NN-NN-NN-DA-NN-FW: A related configuration incorporating a digital/analog I/O extension.
Rexroth CSB02.1B: A single-axis-oriented IndraDrive control section family with different interface and application configurations.
Rexroth CSH02.1B-ET: A higher-function IndraDrive control section family supporting additional communication and safety options.
Installation and Maintenance — CDB02.1B-ET-EC-EC-NN-NN-NN-NN-NN-FW
Before installation, verify the compatible power section, firmware package, encoder type, MultiEthernet configuration, and axis parameters. Save the existing drive parameters before removing the original control section.
Use ESD protection and ensure the drive is fully de-energized before handling the module. Inspect the backplane connection and encoder interfaces for contamination or mechanical damage. After installation, verify communication, encoder feedback, axis identification, homing, and motion direction before enabling the machine.
Personally, I would confirm the firmware requirement before ordering the spare. The FW suffix does not mean firmware is already included; Bosch Rexroth documentation states that the firmware package must be ordered separately.
Product Warranty — CDB02.1B-ET-EC-EC-NN-NN-NN-NN-NN-FW
Warranty terms depend on supplier, equipment condition, and purchase agreement. For new, surplus, or refurbished inventory, confirm the exact type code, hardware revision, serial number, firmware compatibility, encoder interfaces, functional-test results, and warranty period before purchase.
The Rexroth CDB02.1B-ET-EC-EC-NN-NN-NN-NN-NN-FW should be specified by its complete type code because the interface configuration directly determines compatibility with the existing IndraDrive motion system.
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