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Short description
I/O module 2 analog inputs ±10 V
General information
B&R ID code 0xC9C4
Status indicators I/O function per channel, operating state, module status, sensor supply per channel
Module run/error Yes, using status LED and software
Inputs Yes, using status LED and software
Sensor power supply Yes, using status LED and software
Power consumption
Bus 0.05 W
Internal I/O 1.05 W (Rev. ≥ D0), 1.15 W (Rev. < D0)
External I/O 1.5 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
Analog inputs
Input ±10 V
Input type Differential input
Digital converter resolution ±15-bit
Data output rate 10,000 samples per second
Output format
Data type INT
Voltage INT 0x8001 - 0x7FFF / 1 LSB = 0x0001 = 305.176 µV
Input impedance in signal range 20 MΩ
Input protection Up to 30 VDC, reverse polarity protection
Open-circuit detection Yes, using software
Permissible input signal Max. ±30 V
Output of digital value during overload Configurable
Conversion procedure SAR
Input filter 4th-order low pass / cutoff frequency 10 kHz
Max. error
Gain 0.013%
Offset 0.0035%
Max. gain drift <0.0008 %/°C
Max. offset drift <0.0025 %/°C
Common-mode rejection
DC 84 dB
Up to 60 Hz 84 dB
Up to 10 kHz 82 dB
Common-mode range ±14 V
Nonlinearity <0.003%
Test voltage
Channel - Channel 1000 VAC
Channel - Bus 1000 VAC
Channel - Ground 1000 VAC
Bus - Ground 800 VAC
Sensor power supply
Nominal voltage 25 V ±2%
Nominal output current Max. 30 mA
Short-circuit proof Yes, continuous
Electrical isolation
Sensor power supply - Channel No
Sensor power supply - Sensor power supply Yes
Max. voltage ripple
Up to 100 kHz ≤2.2 mV
Up to 1 MHz ≤22 mV
Higher ≤100 mV
Short-circuit current
Typical <50 mA
Maximum 60 mA
Behavior on short circuit Current limitation
Electrical properties
Electrical isolation Channel isolated from channel and bus
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 -
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:
  • 2 analog voltage inputs
  • Electrically isolated analog channels
  • Electrically isolated sensor supplies
  • 16-bit digital converter resolution
  • Very high sampling rate
  • NetTime timestamp: Moment of measurement

The module is equipped with 2 voltage measurement inputs with 16-bit digital converter resolution.

Each voltage input has its own sensor supply. The two channels with their respective sensor supplies are electrically isolated from each other.

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
V2.7 HW Upgrade (X20AI2237) EXE / 1 MB
V3.0 HW Upgrade (X20AI2237) EXE / 2 MB
V4.0 HW Upgrade (X20AI2237) EXE / 838 KB
Certificates Version (Date) Download
244665 CSA HazLoc Certificate of Compliance X20, X67 PDF / 56 KB
E115267 UL CoC X20 PDF / 847 KB
FTZU 09 ATEX 0083X PDF / 697 KB
X20, X67 KC certificates PDF / 6 MB
Documentation Version (Date) Download
Datasheet X20AI2237 PDF / 447 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

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