Description
Product Overview
The Bosch Rexroth CSH01.1C-PB-EN2-NNN-MD2-S1-S-NN-FW is an Advanced control section for the IndraDrive drive system. It is designed for single-axis motion control applications and combines PROFIBUS master communication, encoder evaluation, digital I/O expansion, SSI encoder functionality, and safety technology I/O in one configurable control section.
The associated material number is R911320898. Technical references identify this configuration as a CSH01.1C Advanced control section with PROFIBUS master communication, EnDat 2.1 / 1 Vpp / 5 V TTL encoder evaluation, MD2 digital I/O expansion with SSI encoder interface, S1 safety technology I/O, and a standard single-line control panel.
The CSH01.1C is installed as part of the modular Rexroth IndraDrive architecture rather than being used as a standalone PLC. Its configuration code is important because different CSH variants can have different encoder, communication, I/O, and safety options.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Bosch Rexroth |
| Product Family | IndraDrive |
| Control Section | CSH01.1C-PB-EN2-NNN-MD2-S1-S-NN-FW |
| Material Number | R911320898 |
| Product Type | Advanced Control Section |
| Axis Configuration | Single-axis |
| Master Communication | PROFIBUS |
| Encoder Option | EnDat 2.1 / 1 Vpp / 5 V TTL |
| Option 2 | Not equipped |
| Option 3 | Digital I/O extension with SSI encoder interface |
| Safety Option | Safety Technology I/O |
| Control Panel | Standard, single-line display |
| Other Design | None |
| Firmware | Ordered as separate subposition |
| Application | IndraDrive motion and servo control |
The Rexroth type-code documentation confirms that EN2 corresponds to EnDat 2.1 / 1 Vpp / TTL encoder evaluation, MD2 corresponds to digital I/O expansion with SSI encoder interface, S1 corresponds to safety technology I/O, S indicates the standard control panel, and FW indicates that firmware is ordered separately.
Main Functions
PROFIBUS Master Communication
The PB designation identifies the PROFIBUS master communication configuration. This allows the control section to communicate with compatible automation and drive-system components through the PROFIBUS architecture.
Encoder Evaluation
The EN2 option supports encoder interfaces associated with EnDat 2.1, 1 Vpp, and 5 V TTL signals. This makes the configuration suitable for motion-control systems where accurate feedback from the motor or machine axis is required.
Digital I/O and SSI Interface
The MD2 option is not simply a generic digital I/O expansion. Rexroth defines MD2 specifically as a digital I/O extension with SSI encoder interface. This distinction matters when replacing an existing CSH control section because other options such as MA1 or MD1 have different functions.
Safety Technology I/O
The S1 option indicates the presence of safety technology I/O. Rexroth’s documentation also notes that S1/S2 safety options require a suitable encoder configuration in Option 1.
Application Areas
The control section is intended for Rexroth IndraDrive motion-control installations, particularly applications requiring coordinated drive control, feedback evaluation, fieldbus communication, and machine I/O.
Typical applications include:
- Servo drive systems
- Machine tools
- Packaging machinery
- Material handling equipment
- Production and assembly machinery
- Automated positioning systems
- Multi-function industrial motion equipment
In a replacement situation, the complete type code is much more important than simply matching the CSH01.1C family name.
Installation & Configuration Guide
1. Verify the complete type code
Before installation, compare the replacement unit with the existing control section. Pay particular attention to PB, EN2, MD2, S1, S, NN, and FW designations.
2. Confirm the drive-system configuration
The CSH01.1C is part of the IndraDrive system. Confirm that the control section is compatible with the installed drive controller and associated modules.
3. Check encoder wiring
Because this version uses the EN2 encoder option, verify the installed feedback device and its wiring before commissioning.
4. Check the I/O configuration
The MD2 option provides digital I/O expansion together with SSI encoder functionality. Make sure the machine wiring corresponds to this configuration.
5. Verify safety wiring
The S1 designation indicates safety technology I/O. Safety-related connections should be checked against the machine’s approved safety circuit and the applicable Rexroth documentation.
6. Confirm firmware
The FW suffix indicates that firmware is ordered as a separate subposition. Do not assume that a control section with the correct hardware code automatically contains the required application firmware.
7. Commission after all checks
After installation, verify communication, encoder feedback, I/O status, and safety functions before returning the machine to production.
Maintenance Notes
For an existing IndraDrive installation, keeping the complete type code on the maintenance record is useful. A CSH01.1C with a different encoder or I/O option may look similar but may not provide the same machine functions.
When troubleshooting, separate the problem into four areas:
- PROFIBUS communication
- Encoder feedback
- Digital I/O / SSI interface
- Safety technology I/O
This makes it easier to determine whether the problem is related to the control section or another part of the drive system.
Avoid connecting or removing control-section connectors while the system is energized. Follow the Rexroth installation and safety instructions for the specific IndraDrive configuration.
Important Replacement Note
There is a model-code discrepancy in the current eBay listing.
The eBay title and item specifics show:
CSH01.1C-PB-EN2-NNN-M02-S1-S-NN-FW R911320898
However, technical references for R911320898 identify the configuration as:
CSH01.1C-PB-EN2-NNN-MD2-S1-S-NN-FW
Rexroth’s type-code documentation defines MD2 as “digital I/O extension with SSI encoder interface.”
For an industrial replacement, I would recommend photographing and checking the complete nameplate before shipment. If the physical label actually reads M02 rather than MD2, the buyer should verify that designation directly with the existing system documentation.
Item Condition
Condition: New – Open Box
The current eBay listing identifies the unit as New – Open box and states “In the box.”
The eBay listing identifies the manufacturer as Rexroth, product type as Advanced Control Unit, and material/model number as R911320898.
Recommended eBay SEO Title
Bosch Rexroth CSH01.1C-PB-EN2-NNN-MD2-S1-S-NN-FW R911320898 | IndraDrive Control Section
Short Chinese Title
Rexroth CSH01.1C-PB-EN2-NNN-MD2-S1-S-NN-FW R911320898 | IndraDrive高级控制单元
