Short description
I/O module 1 full bridge for controlling stepper motors
General information
B&R ID code 0xF1B0
Status indicators I/O function per channel, operating state, module status
Module run/error Yes, using LED status indicator and software
Output Yes, using LED status indicator and software
I/O power supply Yes, using software
Power consumption
Bus 0.01 W
Internal I/O -
External I/O
24 VDC 2.2 W
48 VDC 3 W
Additional power dissipation caused by actuators (resistive) [W] -
Input current limiting Max. 10 A
CE Yes
UL cURus E225616
Power conversion equipment
Motor bridge - Power unit
Quantity 1
Type 2-phase bipolar stepper motor (full bridge)
Nominal voltage 24 to 48 VDC ±25%
Nominal current 2.5 A
Maximum current 3.5 A for 1 s
DC bus capacitance 100 µF
Step resolution Max. 256 microsteps per step
Module power supply
Supply External
Fuse Required line fuse: Max. 10 A, slow-blow
Output protection Reverse polarity protection on supply voltage
Digital inputs
Quantity 4
Nominal voltage 24 VDC
Input circuit Sink
Input filter
Hardware <5 µs
Software -
Connection type 1-wire connections
Input resistance Typ. 10 kΩ
Additional functions 1x ABR incremental encoder,
open-circuit detection
Switching threshold
Low <5 VDC
High >10 VDC
ABR incremental encoder
Quantity 1
Encoder inputs 24 V, asymmetrical
Counter size 16-bit
Input frequency Max. 50 kHz
Evaluation 4x
Electrical properties
Electrical isolation Channel isolated from bus
Channel not isolated from I/O power supply
Operating conditions
Mounting orientation
Horizontal Yes
Vertical Yes
Installation elevation above sea level
0 to 2000 m No limitation
>2000 m Reduction of ambient temperature by 0.5°C per 100 m
Degree of protection per EN 60529 IP20
Ambient conditions
Horizontal mounting orientation -25 to 50°C
Vertical mounting orientation -25 to 50°C
Derating See section "Derating".
Storage -25 to 70°C
Transport -25 to 70°C
Relative humidity
Operation 5 to 95%, non-condensing
Storage 5 to 95%, non-condensing
Transport 5 to 95%, non-condensing
Mechanical properties
Note Order 1x terminal block X20TB12 separately.
Order 1x bus module X20BM11 separately.
Pitch 12.5+0.2 mm
  • 1 stepper motor, 24 to 48 VDC ±25%, 2.5 A (3.5 A peak)
  • Resolution of current values at 1%
  • Boost, nominal and holding current separately configurable
  • Sensorless, load-dependent current control
  • Integrated motor detection
  • 256 microsteps per step
  • Stall detection
  • Complete integration in Automation Studio and CNC applications
  • 4 inputs, 24 VDC, adjustable for ABR incremental encoders
  • Open circuit detection for push-pull encoders
  • Input ramp limit at max. 10 A
  • Function model "Ramp" based on CANopen communication profile DS402

The stepper motor module is used to control stepper motors with a nominal voltage of 24 to 48 VDC (±25%) at a motor current up to 2.5 A (3.5 A peak). In addition, this module has 4 digital inputs that can be used as limit switches or encoder inputs.

Due to the individual adjustment of the coil currents, the motor is only operated with the current it actually needs. This simplifies the selection of the available motors and prevents unnecessary heating. Because this affects energy consumption and thermal load, the effects are positive on the service life of the complete system. Complete flexibility is achieved through the use of independently adjustable holding, maximum and nominal current values. The current for microsteps is automatically adjusted to the configured current values.

In addition, the module contains a sensorless, load-dependent current control. Depending on the operating situation and load, the module regulates the current downwards. Energy savings up to 75% are possible in this way.

The automatic motor identification system is an enormous help during standstills. The stepper motor modules can identify the connected motors using their coil characteristics and generate feedback in the form of an analog value. This makes it possible to detect not only wiring errors, but also incorrect motor types being used mistakenly. "Stall detection" is integrated to analyze the motor load. Detection of the stall is defined via a configurable threshold. This allows an overload or motor standstill to be detected precisely in many different types of applications.

Необходимые аксессуары
Bus modules
X20BM11 Базовый модуль X20, кодировка 24 В пост. тока, сквозная шина питания ввода/вывода
X20BM15 Базовый модуль X20, с переключателем номера узла, кодировка 24 В пост. тока, сквозная шина питания ввода/вывода
Terminal blocks
X20TB12 Клеммная колодка X20, 12 контактов, кодировка 24 В постоянного тока
E-CAD (шаблоны Electro или EPLAN) Version (Date) Download
X20 EPLAN P8 from V2.4 EXE / 158 МБ
M-CAD (Механические шаблоны) Version (Date) Download
3D File DXF/STEP X20 Electronic module ZIP / 10 кБ
3D File STEP X20 I/O-Slice ZIP / 872 кБ
Dimensions PDF X20 Electronic module PDF / 3 кБ
Документация Version (Date) Download
Data sheet X20SM1436-1 PDF / 1 МБ
Installation- / EMC-Guide PDF / 20 МБ
X20 System User´s Manual PDF / 7 МБ
Обновление Automation Studio HW Version (Date) Download
V3.0 HW Upgrade (X20SM1436-1) EXE / 2 МБ
V4.0 HW Upgrade (X20SM1436-1) EXE / 2 МБ
V4.0 HW Upgrade (X20SM1436-1) EXE / 2 МБ

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