REXRTOH IndraDrive Controller CS Series Technical Analysis and Application Guide

IndraDrive Controller CS Series: Technical Architecture, Configuration, and Application Analysis

The IndraDrive series drive controller launched by Bosch Rexroth, as a representative of high-performance servo drive solutions in the field of industrial automation, is widely used in high-precision motion control scenarios such as packaging machinery, printing equipment, machine tools, and robots due to its flexible configuration, rich interfaces, and strong scalability in the control section, especially the CSB01, CSH01, and CDB01 series. This article is based on the official Project Planning Manual (R911295012-Edition 09) and provides a comprehensive review and technical interpretation of the IndraDrive control section from the aspects of system architecture, model classification, functional interfaces, optional modules, safety specifications, and technical data. The aim is to provide engineers and system planners with a clear and detailed set of integration guidelines.

IndraDrive system architecture and basic concepts of control segments

The IndraDrive drive controller consists of two core components: the Power Section and the Control Section. The control section serves as the "brain" of the driver, responsible for executing motion control algorithms, external communication, signal acquisition, and safety monitoring functions, and is connected to the power section in a plug-in manner. According to the manual, standard factory equipment is usually in a fully assembled state, and the control section can also be delivered separately, making it convenient for users to upgrade or replace according to project requirements.

When installing and disassembling the control section, the following specifications must be strictly followed:

Only personnel trained in Rexroth are allowed to operate;

ESD protection measures must be taken, such as grounding operators and tools;

The maximum number of control segment insertions and removals is 20 times to avoid interface wear and affect reliability.

Classification and core characteristics of control segment models

The IndraDrive control section is mainly divided into two series: BASIC and ADVANCED, further subdivided into single axis and dual axis configurations to adapt to different motion control complexities and cost requirements.

1. BASIC series control segment

The BASIC series includes BASIC OPENLOOP（FC）、BASIC SERCOS（SE）、BASIC PROFIBUS（PB）、BASIC ANALOG（AN）  And various models such as BASIC UNIVERSAL (configurable). among which

CSB01.1N-FC: Suitable for open-loop control, with 8 digital inputs, 2 analog inputs/outputs, and relay outputs;

CSB01.1N-SE: Integrated Sercos fiber optic communication interface, supporting high-speed periodic communication;

CSB01.1C: It is a configurable single axis control segment that supports multiple communication and encoder options;

CDB01.1C: It is a configurable dual axis control section that can independently control two servo axes, suitable for compact multi axis systems.

The typical control cycle of BASIC series is 125 µ s for current loop, 250 µ s for speed loop, and 500 µ s for position loop. The switching frequency supports 2 kHz, 4 kHz, and 8 kHz (some models can reach 12-16 kHz).

2. ADVANCED series control section

The ADVANCED series (CSH01.1C/2C/3C) is designed for high-performance applications, featuring shorter control cycles (current loops up to 62.5 µ s) and stronger computational capabilities, supporting more complex multi axis coordination and safety functions. Its characteristics include:

More diverse digital and analog I/O (up to 22 digital inputs and 4 analog outputs);

Integrated Engineering Interface (X26), supporting Ethernet based debugging and diagnostics;

Optional cross communication module (CCD) is available to achieve direct data exchange between drivers.

Optional modules and system extensions

The IndraDrive control section provides a wide range of optional modules, and users can flexibly expand its functions through slots (such as X4, X8, X41, etc.), mainly including the following categories:

1. Communication module

Sercos (SE): Based on fiber optics, it has strong anti-interference ability and is suitable for high-speed real-time networks;

PROFIBUS (PB): Supports DP protocol and is widely used in factory automation;

Multi Ethernet (ET): integrates multiple Ethernet protocols (Sercos III, EtherCAT, Profinet, etc.);

CANopen/DeviceNet (CO/CD): suitable for distributed I/O and device networking;

Parallel Interface (PL): Provides 16 digital inputs/outputs, suitable for high-speed pulse control.

2. Encoder evaluation module

ENS: Supports IndraDyn and HIPERFACE ®、 EnDat 2.1, 1 Vpp sine and 5V TTL encoder;

EN1: Suitable for Resolvers and HSF digital servo feedback;

EN2: Supports 5V encoder with Sense line feedback, which can compensate for cable voltage drop.

3. I/O expansion module

AN: Add 4 differential analog inputs (± 10 V);

MA1: Provides 2 analog inputs and 2 analog outputs with an accuracy of 12 bits;

MD1/MD2: Expand the number of digital input and output points, and MD2 also integrates the SSI absolute value encoder interface.

4. Security technology module