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Short description
I/O module 2-channel PWM motor bridge, 2 AB incremental encoders
General information
B&R ID code 0x26B5
Status indicators I/O function per channel, operating state, module status
Module run/error Yes, using status LED and software
Output Yes, using status LED and software
I/O power supply Yes, using software
Power consumption
Bus 0.01 W
Internal I/O -
External I/O
24 VDC 2.45 W
48 VDC 3.15 W
Additional power dissipation caused by actuators (resistive) [W] -
CE Yes
ATEX Zone 2, II 3G Ex nA nC IIA T5 Gc
IP20, Ta (see X20 user's manual)
FTZÚ 09 ATEX 0083X
UL cULus E225616
Power conversion equipment
HazLoc cCSAus 244665
Process control equipment
for hazardous locations
Class I, Division 2, Groups ABCD, T5
DNV GL Temperature: B (0 - 55°C)
Humidity: B (up to 100%)
Vibration: B (4 g)
EMC: B (bridge and open deck)
KR Yes
KC Yes
Digital inputs
Quantity 4
Nominal voltage 24 VDC
Input voltage 24 VDC (-15% / +20%)
Input current at 24 VDC Approx. 1.3 mA
Input circuit Sink
Input filter
Hardware <5 µs
Software -
Connection type 1-wire connections
Input resistance Typ. 18 kΩ
Additional functions 2x AB incremental encoder, 1x ABR counter, 2x event counter, 2x period duration/gate measurement
Switching threshold
Low <5 VDC
High >15 VDC
Insulation voltage between channel and bus 500 Veff
AB incremental encoder
Quantity 2
Encoder inputs 24 V, asymmetrical
Counter size 16-bit
Input frequency Max. 50 kHz
Evaluation 4x
Signal form Square wave pulse
PWM output
Quantity 2
Nominal voltage 24 to 39 VDC ±25%
Nominal current 3 A
Maximum current 3.5 A (2 s)
PWM frequency Standard operating mode: 15 Hz to 50 kHz
Frequency operating mode: 1 Hz to 6553.5 Hz
SuperVibe operating mode: 1 Hz to 50 kHz
Actuator power supply
Supply External
Fuse Required line fuse: Max. 10 A, slow-blow
Output protection Thermal cutoff for overcurrent and short circuit
Variant H bridge
Configurable dither Amplitude, frequency
Period duration resolution (PWM/current operating mode) 16-bit, min. 20 μs
Frequency resolution Frequency mode
Scaling 0.1 Hz <3000 Hz: 0.1 Hz; 3000 to 6553.5 Hz: 0.1 to 0.4 Hz
Scaling 0.01 Hz <300 Hz: 0.01 Hz; 300 to 655.35 Hz: 0.01 to 0.04 Hz

SuperVibe mode
Scaling 1 Hz <10 kHz: 1 Hz; 10 to 50 kHz: 1 to 40 Hz
Scaling 0.1 Hz <1000 Hz: 0.1 Hz; 1000 to 6553.5 Hz: 0.1 to 4 Hz
Phase shift PWM1 to PWM2 180° - if possible (according to operating mode)
DC bus capacitance 100 μF
PWM pulse width 15-bit + sign ≥10 ns
Frequency mode 15-bit + sign ≥10 ns
Insulation voltage between channel and bus 500 Veff
Electrical properties
Electrical isolation
Channel isolated from bus

Channel not isolated from channel
Operating conditions
Mounting orientation
Horizontal Yes
Installation elevation above sea level
0 to 2000 m No limitations
>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 Not permitted
Derating See section "Derating"
Storage -40 to 85°C
Transport -40 to 85°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 X20BM31 bus module separately
Pitch 25+0.2 mm
Material number:
  • 2x outputs (H bridge) with PWM control and 24 to 39 VDC ±25% supply
  • 3 A nominal current (3.5 A max current)
  • 15 Hz to 50 kHz frequency, 16-bit
  • Frequency mode with 10 to 6553.5 Hz or 1 to 655.35 Hz resolution.
  • PWM resolution, 15-bit + sign, minimum 10 ns
  • Configurable dither
  • 2x 2 inputs 24V, can be configured as AB
  • Sink connection
  • 1-wire connections

The motor bridge module is used to control 2 DC motors with a nominal voltage of 24 to 39 VDC ±25% at a nominal current up to 3 A. The module can be reconfigured and used in current controller mode for controlling inductive loads. The module is also equipped with 4 digital inputs, which can be used as incremental counters. Each motor is controlled with a full-bridge (H-bridge). This enables the motors to be moved in both directions.

Mandatory Accessories
Bus modules
X20BM31 X20 bus module for double-width modules, 24 VDC keyed, internal I/O supply continuous
Terminal blocks
X20TB12 X20 terminal block, 12-pin, 24 VDC keyed
Automation Studio HW Upgrades Version (Date) Download
V2.7 HW Upgrade (X20MM2436) EXE / 2 MB
V3.0 HW Upgrade (X20MM2436) EXE / 2 MB
V4.0 HW Upgrade (X20MM2436) EXE / 1 MB
Certificates Version (Date) Download
244665 CSA HazLoc Certificate of Compliance X20, X67 PDF / 56 KB
ABS Certificate of Product Design Assessment - X20 IO Series PDF / 2 MB
DNV GL Type Approval Certificate - X20 / Power Panel T30 PDF / 164 KB
FTZU 09 ATEX 0083X PDF / 697 KB
KR Type Approval Certificate MIL39390-AC003 (X20 System) PDF / 758 KB
Lloyds Register PDF / 506 KB
Safe cutoff of potential groups PDF / 147 KB
X20, X67 KC certificates PDF / 6 MB
Documentation Version (Date) Download
Data sheet X20(c)MM2436 PDF / 599 KB
X20 System User´s Manual PDF / 56 MB
E-CAD (Electro or EPLAN Templates) Version (Date) Download
X20 EPLAN P8 from V2.4 EXE / 161 MB
M-CAD (Mechan. Templates) Version (Date) Download
3D File X20 Double IO Slice ZIP / 1,002 KB

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