Bosch Rexroth CSH01.1C-PB-ENS-ENS-NNN-NNN-S-NN-FW IndraDrive Control Section

Description

Bosch Rexroth CSH01.1C-PB-ENS-ENS-NNN-NNN-S-NN-FW

Product Introduction

The Bosch Rexroth CSH01.1C-PB-ENS-ENS-NNN-NNN-S-NN-FW belongs to the CSH01.1C Advanced Control System family used in Bosch Rexroth IndraDrive servo systems. This is a control section, not a complete servo drive by itself. It works with the corresponding IndraDrive power section and provides the control electronics required for single-axis motion applications. The PB configuration identifies PROFIBUS as the master communication interface, while the two ENS positions indicate encoder interfaces intended for feedback systems including IndraDyn, Hiperface, 1 Vpp, and TTL formats.

From an engineering standpoint, Bosch Rexroth CSH01.1C-PB-ENS-ENS-NNN-NNN-S-NN-FW should be treated as a highly configuration-dependent motion-control component. The CSH01.1C family contains numerous combinations of encoder interfaces, analog I/O, encoder emulation, safety technology, and operator-panel options. A visually identical control section can therefore have materially different functionality depending on its complete type code. The verified CSH01.1C-PB-ENS-ENS family includes configurations with no safety option, S1, and S2 safety technology, among others.

The exact string supplied here deserves special attention during procurement. Bosch Rexroth configuration listings show the fourth option position followed by a safety-technology designation such as NN, L1, L2, S1, or S2; a standalone S in the position represented by the supplied code was not found in the listings reviewed. Therefore, the safest purchasing approach is to use the complete nameplate code and, where available, the Rexroth material number rather than treating this string as a confirmed orderable configuration. The closest documented configuration is .1C-PB-ENS-ENS-NNN-NN-S-NN-FW, material number R911319441.

Technical Specifications

The 24 VDC supply and 7.5 W consumption are documented for the closely matching .1C-PB-ENS-ENS-NNN-S2-S-NN-FW configuration, so they should not be treated as independent confirmation of every possible .1C configuration.

CSH01.1C-PB-ENS-EN2-NNN-S2-S-NN-FW

Main Features and Engineering Considerations

Dual ENS Encoder Configuration

The two ENS positions are significant. The .1C type-code documentation identifies ENS as an encoder option supporting IndraDyn, Hiperface, 1 Vpp, and TTL feedback technologies. Having two ENS positions provides a different feedback architecture from versions populated with EN1, EN2, MEM, MA1, or NNN options.

PROFIBUS Master Communication

The PB designation identifies the PROFIBUS configuration. This makes the controller suitable for machine architectures in which the IndraDrive axis exchanges command, status, and parameter information through a PROFIBUS-based control system. The communication configuration should be checked against the PLC hardware, GSD configuration, telegram structure, and existing drive parameter set before replacement.

Separate Control and Power Sections

This unit should not be ordered as though it were a complete servo amplifier. The .1C is the control portion of an IndraDrive system and must be matched with the installed power section. Encoder wiring, motor feedback, firmware, drive parameters, and power-section compatibility all matter during replacement.

Configuration-Code Risk

The largest procurement issue with the supplied part number is the code itself. Bosch Rexroth’s documented .1C configurations use a safety designation in this section of the type code. The verified catalog list includes ...ENS-ENS-NNN-NN-S-NN-FW, ...ENS-ENS-NNN-S1-S-NN-FW, and ...ENS-ENS-NNN-S2-S-NN-FW, but not the exact ...ENS-ENS-NNN-NNN-S-NN-FW supplied here.

For a plant replacement, do not silently substitute the closest configuration. A safety-equipped S1/S2 unit can have different functional implications from a unit with NN, and an apparently minor type-code difference can affect commissioning and machine certification.

Application Scenarios

• Single-axis servo control in production machinery
• Packaging and converting equipment
• Machine tools
• Material-handling equipment
• Industrial positioning systems
• OEM IndraDrive motion platforms
• Replacement of installed .1C control sections
• Legacy machine refurbishment where the existing PROFIBUS architecture is retained

Engineer’s Guide: Field Pitfalls

1. Verify the material number, not just the .1C family name.
The .1C family contains many hardware configurations. Two units can share the same basic housing while having different encoder, I/O, and safety functions.

2. Check the safety designation carefully.
The supplied code contains NNN where the standard configuration pattern normally contains a safety option such as NN, L1, L2, S1, or S2. Do not assume the S appearing later in the string is equivalent to an S1 or S2 safety configuration.

3. Confirm both encoder interfaces.
If the machine uses two feedback channels or a particular encoder technology, verify the actual CSH hardware configuration before energizing the replacement.

4. Preserve the existing drive parameters.
A physically compatible control section still requires correct motor, encoder, communication, and application parameters. Record the existing configuration before removing the original unit.

5. Confirm firmware compatibility.
IndraDrive firmware is a separate engineering consideration. A replacement controller with different firmware can change parameter availability or commissioning behavior.

6. Inspect the complete drive assembly.
The CSH control section must be compatible with the installed power section, communication architecture, motor feedback, and cabinet arrangement. A part-number-only substitution is not sufficient for a production-critical servo axis.

Frequently Asked Questions

Is .1C-PB-ENS-ENS-NNN-NNN-S-NN-FW a Bosch Rexroth product?

Yes. The .1C family is a Bosch Rexroth/Indramat IndraDrive Advanced Control System family.

What does PB mean?

PB identifies the PROFIBUS master communication configuration in the .1C type code.

What does ENS mean?

ENS identifies an encoder interface configuration supporting IndraDyn, Hiperface, 1 Vpp, and TTL feedback technologies.

Is this a complete servo drive?

No. It is a control section for an IndraDrive system and is used with a compatible power section.

Is the exact supplied part number confirmed?

Not fully. I could verify the .1C-PB-ENS-ENS family, but the exact ...NNN-NNN-S-NN-FW configuration was not found in the published configuration list I checked. The documented nearby configuration .1C-PB-ENS-ENS-NNN-NN-S-NN-FW is assigned material number R911319441.

Should R911319441 automatically be used as a replacement?

No. It is the closest documented configuration I found, not a blanket replacement recommendation. Compare the original nameplate, material number, firmware, encoder configuration, safety function, and existing IndraDrive power section before substitution.

Procurement Note

For this item, the complete type code and material number should be treated as mandatory purchasing information. If the physical nameplate really reads .1C-PB-ENS-ENS-NNN-NNN-S-NN-FW, retain that exact marking in the RFQ and request confirmation against the Rexroth material number before committing the replacement. The available .1C catalog contains multiple ENS/ENS configurations with different safety options, so changing NN, S1, or S2 without engineering approval is not a harmless suffix change.

For an installed machine, I would also request a photo of the nameplate, the associated IndraDrive power-section part number, current firmware designation, and encoder/motor model. Those four pieces of information substantially reduce the risk of receiving a mechanically compatible but electrically or functionally incorrect control section.