Description
1. Product Overview
Rexroth CDB01.1C‑ET‑ENS‑ENS‑NNN‑NNN‑L2‑S‑NN‑FW is an original Bosch Rexroth dual-axis servo control unit of the IndraDrive C series, serving as the core master module of high-end industrial servo drive systems and designed specifically for high-precision, high-dynamics and multi-axis linked automation equipment. As the core control hub of the IndraDrive drive system, this control unit can form a complete servo drive system when matched with all C-series power modules. It undertakes core functions including equipment motion logic calculation, axis control closed-loop regulation, precise position/speed/torque control, bus communication interaction, safety monitoring and fault diagnosis. It is widely adopted in high-precision industrial scenarios such as high-end intelligent manufacturing, precision machine tools, automated production lines, rubber & plastic equipment, packaging & printing, and material handling conveying.
This model is an upgraded universal dual-axis control unit of the CDB01.1C series. Equipped with two independent axis control channels, it supports complex motion control processes including dual-axis synchronous linkage, electronic cam, interpolation motion and master-slave follow-up. Adopting ET real-time industrial bus architecture and ENS standard encoder interface configuration, it features high calculation accuracy, fast dynamic response, strong bus synchronization, excellent anti-interference performance and flexible configuration. The module integrates native industrial safety functions, multi-stage EMC electromagnetic compatibility protection and hardware-based status self-check mechanism. It has passed full original Bosch Rexroth reliability tests including high-low temperature aging, vibration shock, electromagnetic compatibility and long-term continuous power-on test. Suitable for harsh industrial workshop conditions with strong electromagnetic interference, continuous vibration, alternating temperature & humidity, dust and oil pollution. It is mainly used for servo system assembly of new high-end automation equipment, upgrading and reconstruction of old Rexroth servo systems, replacement of control units for multi-axis linked equipment, and spare parts stock of core high-end industrial servo components.
2. Functional Characteristics
2.1 Dual-axis Independent High-precision Motion Control, Strong Adaptability to Complex Processes
The module integrates two fully independent servo motion control channels. Each axis can independently realize precise regulation of position closed-loop, speed closed-loop and torque closed-loop. The two axes operate synchronously without mutual interference. It natively supports high-end motion processes such as point-to-point motion, continuous trajectory motion, electronic gear, electronic cam, synchronous follow-up, interpolation linkage and flexible start-stop. It can accurately match complex working conditions including precision machine tool feed, high-speed packaging, multi-axis linked cutting, synchronous conveying and dynamic tension control. With ultra-high resolution computing capability and millisecond-level dynamic response speed, it can effectively suppress low-speed crawling, high-speed jitter and positioning deviation of equipment, comprehensively improving the operation accuracy and process stability of automation equipment to meet strict control standards of high-end precision manufacturing.
2.2 Real-time Industrial Bus Communication for Seamless Interconnection of Multiple Systems
It is equipped with ET real-time industrial Ethernet bus interface to support high-speed real-time data exchange, featuring high bus synchronization accuracy, low transmission delay and strong anti-interference capability. It can seamlessly connect mainstream industrial PLCs, upper control systems and industrial configuration platforms. Matched with dual ENS standard encoder interfaces, it supports signal acquisition of mainstream incremental and absolute servo encoders to realize high-precision lossless collection and closed-loop feedback of motor position, speed and angle signals. It supports multi-axis bus networking linkage to achieve time sequence synchronization, data exchange and logic linkage of the whole line equipment, meeting centralized control and collaborative operation requirements of large-scale multi-axis automated production lines with strong hardware expandability and system compatibility.
2.3 Integrated Native Safety Control to Ensure Safe and Reliable Equipment Operation
Built with standardized industrial safety control mechanism developed by Bosch Rexroth, it integrates multiple native safety functions including STO Safe Torque Off, safety monitoring, overload protection, overspeed protection, overtemperature protection, overcurrent and undervoltage protection, fully complying with industrial equipment safe operation specifications. It can real-timely monitor hidden abnormalities of servo motors, power modules, power supply loops and motion status. Once exceeding limits, it immediately triggers safety protection logic, quickly cuts off drive output and locks equipment status to eliminate safety risks such as equipment runaway, overload damage, mechanical collision and electrical faults. Without additional safety peripherals, the hardware-integrated safety design greatly simplifies the layout of equipment safety loops and improves the protection level and operation safety of the whole machine.
2.4 Strong Anti-interference Electrical Architecture for Stable Operation Under Harsh Working Conditions
It adopts industrial-grade full-isolation electrical design. The control loop, communication loop, encoder signal loop and power supply loop are completely electrically isolated. Combined with multi-stage EMI filtering, surge suppression and high-frequency noise reduction circuits, it can effectively resist frequency converter harmonics, power cable interference, electromagnetic radiation, voltage fluctuation and instantaneous pulse impact on site. Optimized specifically for harsh workshop environments including continuous vibration, alternating temperature & humidity, dust, oil pollution and strong electromagnetic interference, it maintains no control drift, signal distortion or synchronization deviation during long-term operation, ensuring long-term high-precision and high-stability continuous operation of multi-axis linked equipment and preventing equipment faults and process deviations caused by working condition interference.
2.5 Full-coverage Hardware Self-diagnosis for Efficient and Convenient Operation, Maintenance and Commissioning
Equipped with a 7×24-hour full-range hardware and system-level self-diagnosis mechanism, it can real-timely monitor all operating parameters including the module main control chip, bus link, encoder loop, power supply status, temperature condition, motion control status and load abnormality. It accurately locates hidden troubles such as communication faults, encoder abnormalities, loop overload, hardware failure and parameter anomalies, automatically generates standardized fault codes, event logs and alarm information, and supports real-time upload and traceability query on upper systems. It supports online parameter configuration, process commissioning, firmware upgrade, fault reset and loop verification. System optimization and fault disposal can be completed without disassembly or shutdown. Convenient for in-situ disassembly and replacement, it greatly reduces equipment downtime and maintenance costs.
2.6 Industrial Reinforced Design for Long-term Maintenance-free Stable Operation
It adopts standardized compact industrial reinforced structure of Rexroth IndraDrive series. The PCB board adopts military-grade conformal coating process, featuring excellent moisture-proof, dust-proof, oil-proof, anti-corrosion, vibration-resistant and alternating high-low temperature resistance performance. It can withstand harsh conditions inside industrial cabinets and equipment for a long time. Core main control chips, computing units, communication modules and loop components have undergone strict original screening, high-low temperature aging and reliability calibration. With low power consumption and low heat generation, it has no high-frequency vulnerable parts, supporting 7×24-hour non-stop continuous power-on operation all year round. No control performance attenuation, parameter drift or communication deviation occurs after long-term operation. Frequent calibration and daily maintenance are not required to meet the long-term stable operation requirements of industrial equipment.
3. Technical Parameters
3.1 Core Adaptation Parameters
Model: CDB01.1C‑ET‑ENS‑ENS‑NNN‑NNN‑L2‑S‑NN‑FW Series: Rexroth IndraDrive C Series Dual-axis Servo Control Unit Brand: Bosch Rexroth Type: Industrial Multi-axis Servo Motion Master Control Module Adapted System: Complete Servo Drive System of Rexroth IndraDrive C Series Adapted Equipment: Precision CNC machine tools, high-speed packaging equipment, printing equipment, rubber and plastic extrusion equipment, automated assembly lines, multi-axis linked intelligent manufacturing equipment Interface Configuration: ET Real-time Industrial Ethernet, Dual ENS Standard Encoder Interfaces, General IO Control Interface Core Functions: Dual-axis independent closed-loop motion control, multi-axis linkage synchronization, bus communication interaction, equipment safety protection, hardware self-diagnosis, online configuration and commissioning, fault traceability alarm Application Scenarios: Servo system assembly for high-end automation equipment, technical upgrading of old Rexroth servo systems, fault replacement of multi-axis control units, spare parts reserve of core servo components for precision industrial equipment
3.2 Motion Control and Bus Parameters
Controlled Axes: Dual-axis independent servo motion control, dual-axis synchronous linkage Control Modes: Adaptive switching among position closed-loop, speed closed-loop and torque closed-loop Bus Type: ET real-time industrial Ethernet bus with high synchronization, low delay and high anti-interference Encoder Interface: Dual-channel ENS standard encoder interface, compatible with mainstream incremental/absolute encoders Motion Technology: Supports electronic cam, electronic gear, master-slave follow-up, trajectory interpolation, flexible start-stop and synchronous positioning Synchronization Accuracy: Microsecond-level synchronization for multi-axis bus, no timing deviation or linkage lag Fault Identification: Self-check and alarm for bus abnormality, encoder fault, motion over-limit, load abnormality and hardware failure
3.3 Electrical Operating Parameters
Operating Power Supply: Industrial standard DC control power supply, complying with IndraDrive system rack power supply specification Power Consumption: Low-power master control design with low heat generation and stable operation of the whole unit Electrical Architecture: Full-loop electrical isolation design to prevent signal crosstalk and electrical interference Protection Mechanism: Built-in overvoltage, undervoltage, overcurrent, overtemperature, overload, overspeed and STO Safe Torque Off protection Operating Characteristics: No control drift, calculation deviation or communication attenuation during long-term power-on operation
3.4 Structure and Installation Parameters
Structure Form: Standardized compact industrial modular structure of IndraDrive series Installation Method: Embedded installation on standard cabinet guide rail, adapted to the rack layout of all C series Fixing Method: Buckle locking, anti-vibration and anti-loosening, easy disassembly and assembly, adapted to equipment vibration conditions Protection Process: Military-grade conformal coating for the whole board, moisture-proof, dust-proof, oil-proof, anti-corrosion and anti-aging Replacement Feature: In-situ non-destructive replacement of old control units of the same series; no rewiring, program reconstruction or re-tuning of process parameters required
3.5 Environmental Working Parameters
Operating Temperature: 0℃ ~ +55℃, standard industrial working condition, suitable for long-term operation inside equipment Storage Temperature: -25℃ ~ +70℃ Operating Humidity: 5%～95%RH (no condensation) Environmental Resistance: Resists strong industrial electromagnetic interference, continuous equipment vibration, alternating temperature difference, dust and oil corrosion Operation Mode: Supports 7×24-hour non-stop continuous power-on operation all year round
4. Hardware Configuration and Structural Advantages
4.1 Core Hardware Configuration
Rexroth CDB01.1C‑ET‑ENS‑ENS‑NNN‑NNN‑L2‑S‑NN‑FW control unit adopts exclusive high-end servo master hardware architecture for IndraDrive C series. It is equipped with industrial high-speed motion computing chip, dual-axis independent closed-loop control unit, ET real-time bus protocol processing module, dual-channel ENS encoder signal parsing unit, multi-stage EMI filtering and noise reduction circuit, hardware safety protection loop and full-range self-diagnosis monitoring unit. All core components have passed strict original Bosch Rexroth screening, high-low temperature aging, precision calibration and electromagnetic compatibility tests, precisely meeting high-precision motion control requirements of high-end multi-axis linked equipment. The module adopts dual-axis independent hardware drive and computing architecture. Fault or signal abnormality of one axis will not interfere with normal operation of the other axis, featuring strong equipment fault tolerance. Equipped with hardware real-time timing synchronization and signal error correction mechanism, it can automatically correct motion deviation, bus delay and signal error. Its control accuracy, response speed and operation stability outperform ordinary servo control modules.
4.2 Structural Design Advantages
The module adopts industrial compact standardized modular structure, suitable for installation on standard cabinet guide rails of IndraDrive series. It features high integration and small footprint for neat and concise equipment layout. High-strength reinforced PCB substrate together with integrated buckle locking structure can withstand long-term vibration during high-speed equipment operation, start-stop impact and alternating temperature & humidity inside the cabinet, eliminating common faults such as loose modules, poor contact, signal flicker and calculation abnormality. The military-grade full-board conformal coating protection process can effectively resist erosion from oil, dust, humid gas and corrosive media inside equipment to avoid hardware aging, parameter drift and control failure. Natively compatible with all IndraDrive power modules and industrial control systems, it boasts strong software and hardware compatibility. In-situ replacement requires no circuit modification, motion logic reconstruction or re-commissioning of process parameters, greatly reducing technical transformation, maintenance and spare parts costs of automation equipment. Meanwhile, it is equipped with visual status indicator lights to directly display module operation, bus communication, fault alarm and axis control status, facilitating rapid on-site inspection and fault judgment.
5. Working Principle
The Rexroth CDB01.1C‑ET‑ENS‑ENS‑NNN‑NNN‑L2‑S‑NN‑FW dual-axis servo control unit adopts a full closed-loop working mechanism: upper instruction reception → bus timing synchronization → dual-axis closed-loop calculation → signal parsing and matching → servo drive output → hardware safety protection → status self-check feedback. It serves as the core motion control and safety hub of the IndraDrive servo system.
During system operation, the module receives motion instructions, process parameters and linkage logic issued by upper PLC and control systems via ET real-time industrial Ethernet bus. It completes multi-axis timing calibration relying on built-in high-precision clock synchronization unit to ensure unified operation timing of dual axes and the whole line equipment. Two independent computing units carry out closed-loop calculation of position, speed and torque for the two servo axes respectively. Combined with real-time motor position and speed signals fed back by ENS encoders, motion deviation is corrected in real time to realize high-precision dynamic closed-loop regulation. Meanwhile, complex motion calculations such as electronic cam, synchronous follow-up and interpolation linkage are performed according to preset process logic, and accurate control signals are output to match lower power modules and servo motors to complete precision motion processes of equipment.
The module conducts real-time self-check of bus communication status, encoder signals, power supply conditions, hardware temperature, load status and motion parameters throughout the operation process. It accurately identifies hidden risks such as communication abnormality, signal loss, overload over-limit and hardware failure. Safety protection logic is triggered immediately and fault codes are generated and uploaded for alarm. It locks the fault status and terminates abnormal motion without damaging equipment. The complete workflow features closed logic, accurate calculation, rapid response and reliable protection, comprehensively guaranteeing high-speed, high-precision, high-safety and high-stability continuous operation of multi-axis automation equipment.
6. Application Scenarios
6.1 Master Control of High-end Multi-axis Linked Automation Equipment
It is widely applied in high-end intelligent manufacturing fields such as precision CNC machine tools, high-speed packaging lines, color printing equipment, rubber & plastic forming equipment, intelligent material handling lines, lithium battery and photovoltaic automation equipment. As the core master unit of dual-axis servo systems, it realizes core functions including high-precision positioning, high-speed synchronous linkage, complex process trajectory motion and dynamic tension control of equipment, ensuring process precision and operation stability of precision equipment to meet strict production standards of high-end industrial manufacturing.
6.2 Complete Supporting for Rexroth IndraDrive Servo Systems
It can perfectly match all power modules, servo motors and operation panels of Rexroth IndraDrive C series to form standardized and integrated high-end servo drive control systems. Suitable for servo system assembly requirements of new automated production lines and precision intelligent equipment. With strong system compatibility, stable operation and high process adaptability, it is the core supporting master hardware of original Rexroth servo systems.
6.3 Spare Parts Reserve and Emergency Replacement for High-end Industrial Servo Components
As an original Bosch Rexroth high-end dual-axis servo control unit, it is an essential maintenance spare part for core equipment in intelligent manufacturing, precision processing and automated production enterprises. It can quickly handle on-site emergencies including control module failure, bus communication abnormality, motion out-of-control and process deviation, rapidly restore servo control functions of equipment and production conditions. It prevents equipment shutdown, process scrap and production interruption caused by master module faults, ensuring all-year-round stable operation of high-end automated production lines.
