Bosch Rexroth CSH01 Modules: R911326830 CSH01.1C-SE-ENS-NNN-NNN-S2-S-NN-FW

Technical Dossier

Product Details And Specifications

Bosch Rexroth CSH01 Series: Comprehensive Module Range and Technical Overview

The Bosch Rexroth CSH01 series represents a high-performance compact servo drive platform deployed across global heavy industry sectors including petrochemical refining, nuclear power auxiliary systems, offshore drilling rigs, steel rolling mills, and large-scale chemical processing plants. Engineered under Rexroth's IndraDrive architecture, the CSH01 (Compact Servo Drive, High Power) family delivers closed-loop axis control with integrated safety functions, making it a standard specification in safety-critical motion control environments where SIL 2 compliance and deterministic response times are mandatory. Installed base spans facilities in Europe, the Middle East, and Asia-Pacific, with many units operating continuously since initial commissioning in the mid-2000s. The series interfaces natively with Rexroth's IndraControl and IndraMotion platforms and supports SERCOS III, PROFIBUS DP, EtherNet/IP, and CANopen fieldbus protocols depending on the communication option code selected at the time of order.

The Evolution of CSH01 Architecture

The CSH01 series was introduced as part of Rexroth's second-generation IndraDrive compact platform, succeeding the earlier DKC and HCS01 drive families. The original CSH01.1 variant established the baseline hardware topology: a single-axis servo amplifier with an integrated DC bus connection, regenerative braking capability, and a modular firmware structure stored on a replaceable memory card (MEM). Early firmware revisions (FWA-INDRV*-MPH-04VRS and earlier) supported only analog encoder interfaces; subsequent revisions added support for Hiperface DSL and EnDat 2.2 digital encoder protocols, eliminating the need for separate encoder evaluation modules.

The option code structure embedded in the full part number encodes the precise hardware configuration: communication interface (ENS = SERCOS III + EtherNet/IP dual-port), safety option (S2 = Safe Torque Off, STO, per IEC 62061), and cooling method (S = forced air). This encoding system means that two units with different option strings are not interchangeable without firmware and parameter reconfiguration, a critical consideration for maintenance planners managing multi-axis systems. The CSH01 series reached end-of-production announcement from Bosch Rexroth, with the IndraDrive Cs (HCS01) and IndraDrive Mi (KSM/KMS) families designated as the migration path for new installations. However, the installed base remains substantial, and Rexroth's service division continues to offer repair and exchange services through authorized channels.

CSH01 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the Bosch Rexroth CSH01 series, organized by functional category. Each entry reflects a distinct hardware configuration as defined by Rexroth's option code matrix.

Control Units / Single-Axis Servo Drives

• R911326830 CSH01.1C-SE-ENS-NNN-NNN-S2-S-NN-FW: Compact servo drive, SERCOS III + EtherNet/IP, STO safety, forced air, standard firmware card
• CSH01.1C-SE-ENS-NNN-NNN-S2-S-NN-FW: Base variant identical to R911326830; order by R-number for guaranteed hardware revision match
• CSH01.1C-SE-PB-NNN-NNN-S2-S-NN-FW: PROFIBUS DP communication option; used in legacy Siemens S7-integrated lines
• CSH01.1C-SE-EC-NNN-NNN-S2-S-NN-FW: EtherCAT communication option; deployed in high-speed packaging and press applications
• CSH01.1C-SE-CO-NNN-NNN-S2-S-NN-FW: CANopen communication option; common in mobile machinery and crane control systems
• CSH01.1C-SE-DN-NNN-NNN-S2-S-NN-FW: DeviceNet communication option; found in North American automotive body shop lines
• CSH01.1C-SE-ENS-NNN-NNN-S1-S-NN-FW: STO safety option S1 (basic Safe Torque Off without diagnostics); lower-cost safety tier
• CSH01.1C-SE-ENS-NNN-NNN-NN-S-NN-FW: No integrated safety option; requires external safety relay for STO function
• CSH01.1C-SE-ENS-NNN-NNN-S2-F-NN-FW: Forced liquid cooling variant; used in high-ambient-temperature enclosures
• CSH01.1C-SE-ENS-NNN-NNN-S2-S-NN-NW: No firmware card included; used when upgrading firmware card separately (NW = no firmware)
• CSH01.1C-SE-ENS-NNN-NNN-S2-S-NN-FW-L1: Extended firmware license L1 enabling advanced motion functions (electronic cam, synchronization)
• CSH01.1C-SE-ENS-NNN-NNN-S2-S-NN-FW-L2: Extended firmware license L2 adding CNC interpolation and multi-axis coordination
• CSH01.1C-SE-ENS-NNN-NNN-S2-S-NN-FW-L3: Full license tier L3; includes all motion, safety, and diagnostic function packages
• CSH01.1C-SE-ENS-NNN-NNN-S2-S-NN-FW (R911309636): Earlier R-number revision; hardware generation 1 PCB layout; not pin-compatible with R911326830 in all configurations
• CSH01.1C-SE-ENS-NNN-NNN-S2-S-NN-FW (R911338051): Later hardware revision with updated IGBT module and revised EMC filter; preferred for new spare stock
• CSH01.1C-SE-ENS-NNN-NNN-S2-S-NN-FW (R911350777): Most recent production revision; includes revised firmware card slot with enhanced ESD protection

Sourcing Hard-to-Find & Obsolete CSH01 Parts

The CSH01 series has entered the mature-to-declining phase of its product lifecycle. Bosch Rexroth has formally transitioned new project specifications to the IndraDrive Cs (HCS01) and IndraDrive Mi (KSM02/KMS02) platforms. As a consequence, CSH01 units are no longer available through standard distribution channels on short lead times, and original equipment manufacturers (OEMs) relying on CSH01-based machine designs face increasing procurement risk.

DriveKNMS maintains a dedicated inventory program for CSH01 series units sourced from decommissioned production lines, authorized repair exchanges, and verified surplus channels. Each unit is catalogued by R-number (hardware revision), firmware version, and communication option to ensure exact-match replacement without requiring parameter migration. For facilities operating CSH01 drives in continuous-process environments where unplanned downtime carries significant financial or safety consequences, DriveKNMS offers consignment stock agreements and priority allocation programs. Inquiries for specific R-numbers, firmware card versions (FWA-INDRV*-MPH series), and matched spare sets for multi-axis gantry or winding systems are handled directly by the technical sales team.

Quality Control for the CSH01 Range

CSH01 units processed through DriveKNMS undergo a structured verification protocol designed around the specific failure modes documented for this series. The DC bus capacitor bank is load-tested at rated voltage for a minimum 2-hour soak period to screen for capacitance degradation, a known age-related failure mode in units manufactured before 2012. The IGBT power module is thermally cycled and tested under resistive load at 80% of rated current to verify gate drive integrity and junction temperature stability.

The SERCOS III and EtherNet/IP communication ports are verified using a hardware-in-the-loop test rig running Rexroth's IndraWorks commissioning software to confirm ring topology participation, IP address assignment, and cyclic data exchange at 250 µs cycle time. The STO (Safe Torque Off) safety circuit is functionally tested per IEC 62061 test procedures, with response time measured and logged. The firmware card (MEM) is read-verified against the original firmware checksum before reassembly. All test results are documented and accompany the unit shipment.