Please choose country and language

Short description
I/O module 4 digital inputs, 2 digital outputs, 1 analog input, 1 analog output, special functions
General information
B&R ID code 0x24C3
Status indicators I/O function per channel, operating state, module status
Module run/error Yes, using status LED and software
Analog inputs Yes, using status LED and software
Digital outputs Yes, using status LED and software (output error status)
Power consumption
Bus 0.01 W
Internal I/O 1.75 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 E115267
Industrial control 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 characteristics per EN 61131-2 Type 1
Input voltage 24 VDC -15 % / +20 %
Input current at 24 VDC Typ. 3.3 mA
Input circuit Sink
Input filter
Hardware ≤2 µs
Software Default 1 ms, configurable between 0 and 25 ms in 0.2 ms intervals
Connection type 1-wire connections
Input resistance Typ. 7.18 kΩ
Additional functions 20 kHz event counting, gate measurement
Switching threshold
Low <5 VDC
High >15 VDC
Insulation voltage between channel and bus 500 Veff
Event counters
Quantity 2
Signal form Square wave pulse
Evaluation Each falling edge, cyclic counter
Input frequency Max. 20 kHz
Counter 1 Input 1
Counter 2 Input 3
Counter frequency Max. 20 kHz
Counter size 16-bit
Gate measurement
Quantity 1
Signal form Square wave pulse
Evaluation Rising edge - falling edge
Counter frequency
Internal 48 MHz, 24 MHz, 12 MHz, 6 MHz, 3 MHz, 1.5 MHz, 750 kHz, 375 kHz, 187.5 kHz
Counter size 16-bit
Length of pause between pulses ≥100 µs
Pulse length ≥20 µs
Supported inputs Input 4
Analog inputs
Quantity 1
Input ±10 V or 0 to 20 mA / 4 to 20 mA, via different terminal connections
Input type Single ended
Digital converter resolution
Voltage ±12-bit
Current 12-bit
Conversion time 400 µs, conversion runs asynchronously to the X2X Link cycle
Output format INT
Output format
Voltage INT 0x8001 - 0x7FFF / 1 LSB = 0x0008 = 2.441 mV
Current INT 0x0000 - 0x7FFF / 1 LSB = 0x0008 = 4.883 µA
Input impedance in signal range
Voltage >1 MΩ
Current -
Voltage -
Current <300 Ω
Input protection Protection against wiring with supply voltage
Permissible input signal
Voltage Max. ±15 V
Current Max. ±50 mA
Output of digital value during overload
Voltage 0x8001
Current 0x0000
Voltage 0x7FFF
Current 0x7FFF
Conversion procedure Successive approximation
Input filter 2nd-order low pass / cutoff frequency 1 kHz
Max. error
Gain 0.08%
Offset 0.02%
Gain 0 to 20 mA = 0.08 % / 4 to 20 mA = 0.1 %
Offset 0 to 20 mA = 0.03 % / 4 to 20 mA = 0.16 %
Max. gain drift
Voltage 0.01 %/°C
Current 0 to 20 mA = 0.009 %/°C
4 to 20 mA = 0.0113 %/°C
Max. offset drift
Voltage 0.002 %/°C
Current 0 to 20 mA = 0.004 %/°C
4 to 20 mA = 0.005 %/°C
Voltage <0.02%
Current <0.02%
Insulation voltage between channel and bus 500 Veff
Digital outputs
Quantity 2
Variant FET positive switching
Nominal voltage 24 VDC
Switching voltage 24 VDC -15 % / +20 %
Nominal output current 0.5 A
Total nominal current 1 A
Connection type 1-wire connections
Output circuit Source
Output protection Thermal cutoff for overcurrent and short circuit, integrated protection for switching inductances, reverse polarity protection
Diagnostic status Output monitoring with 10 ms delay
Leakage current when the output is switched off 5 µA
RDS(on) 105 mΩ
Peak short-circuit current <14 A
Switch-on in the event of overload shutdown or short-circuit shutdown Approx. 10 ms (depends on the module temperature)
Switching delay
0 → 1 <250 µs
1 → 0 <270 µs
Switching frequency
Resistive load Max. 100 Hz
Inductive load See section "Switching inductive loads"
Braking voltage when switching off inductive loads Typ. 50 VDC
Insulation voltage between channel and bus 500 Veff
Analog outputs
Quantity 1
Output ±10 V or 0 to 20 mA, via different terminal connections
Digital converter resolution 12-bit
Conversion time 300 µs, conversion runs asynchronously to the X2X Link cycle
Settling time on output change over entire range 1 ms
Switch on/off behavior Internal enable relay for booting and errors
Max. error
Gain 0.04%
Offset 0.0225%
Gain 0.05%
Offset 0.125%
Output protection Short circuit protection
Output format
Voltage INT 0x8001 - 0x7FFF / 1 LSB = 0x0010 = 4.882 mV
Current INT 0x0000 - 0x7FFF / 1 LSB = 0x0010 = 9.766 µA
Load per channel
Voltage Max. ±10 mA, load ≥ 1 kΩ
Current Max. load is 400 Ω
Max. gain drift
Voltage 0.012 %/°C
Current 0.014 %/°C
Max. offset drift
Voltage 0.0075 %/°C
Current 0.03 %/°C
Error caused by load change
Voltage Max. 0.02%, from 10 MΩ → 1 kΩ, resistive
Current Max. 0.5%, from 1 Ω → 400 Ω, resistive
Nonlinearity <0.1%
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
Vertical 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 60°C
Vertical mounting orientation -25 to 50°C
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 X20TB12 terminal block separately
Order 1x X20BM11 bus module separately
Pitch 12.5+0.2 mm
Material number:
  • Digital and analog channels
  • Selectable current and voltage for AI and AO
  • Counter functions

The module is a universal mixed module. On this module, digital I/O and analog I/O are combined. A current or voltage signal can be used for the analog I/O as desired. Counter functions on two of the digital inputs expand the range of use.

Mandatory Accessories
Bus modules
X20BM11 X20 bus module, 24 VDC keyed, internal I/O supply continuous
X20BM15 X20 bus module, with node number switch, 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
V2.6 HW Upgrade (X20CM8281) EXE / 1 MB
V3.0 HW Upgrade (X20CM8281) EXE / 2 MB
V4.0 HW Upgrade (X20CM8281) EXE / 888 KB
Certificates Version (Date) Download
244665 CSA HazLoc Certificate of Compliance X20, X67 PDF / 56 KB
ABS Type Approval Certificate - X20 IO Series PDF / 2 MB
DNV GL Type Approval Certificate - X20 / Power Panel T30 PDF / 164 KB
E115267 UL CoC X20 PDF / 847 KB
FTZU 09 ATEX 0083X PDF / 697 KB
KR Type Approval Certificate MIL39390-AC003 (X20 System) PDF / 758 KB
Lloyds Register PDF / 506 KB
Documentation Version (Date) Download
Data sheet X20CM8281 PDF / 443 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 DXF/STEP X20 Electronic module ZIP / 10 KB
3D File STEP X20 I/O-Slice ZIP / 872 KB
Dimensions PDF X20 Electronic module PDF / 3 KB

Please choose country and language

B&R Logo