IAC

B&R X20cSA4430

2 safe analog input pairs for current measurement 0.5 to 25 mA 24-bit digital converter resolution Channels individually galvanically isolated Sensor power supplies galvanically isolated Input filter configurable The module is equipped with 2 safe analog input pairs for current measurement. Each input pair has its own sensor power supply. The channels with their respective sensor supplies are electrically isolated from each other. It can be used to capture current signals in the range from 0.5 to 25 mA. The safe analog input module is suitable for safely acquiring current signals for safety-related applications up to PL e or SIL 3. This module is designed for X20 16-pin terminal blocks.

Lifecycle & replacement

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Technical specifications

Short description
I/O module2x 2 safe type A analog inputs, 0.5 to 25 mA, channels individually galvanically isolated
General information
Diagnostics / Module run/errorYes, using LED status indicator and software
Diagnostics / InputsYes, using LED status indicator and software
Blackout mode / ScopeModule
Blackout mode / FunctionModule functionality
Blackout mode / Standalone modeNo
Power consumption / Bus0.25 W
Power consumption / Internal I/O1.7 W
Electrical isolation / Channel - BusYes
Electrical isolation / Channel - ChannelYes
Electrical isolation / Channel pair - Channel pairYes
Certifications / CEYes
Certifications / UKCAYes
Certifications / CRA (Cyber Resilience Act)In preparation
Certifications / Functional safetycULus FSPC E361559 Energy and industrial systems Certified for functional safety ANSI UL 1998:2013
Certifications / Functional safety #2IEC 61508:2010, SIL 3 EN 62061:2005/A2:2015, SIL 3 EN ISO 13849-1:2015, Cat. 4 / PL e IEC 61511:2004, SIL 3
Certifications / Functional safety #3EN 50156-1:2004
Certifications / ATEXZone 2, II 3G Ex nA nC IIA T5 Gc IP20, Ta (see X20 user's manual) FTZÚ 09 ATEX 0083X
Certifications / ULcULus E115267 Industrial control equipment
Certifications / HazLoccCSAus 244665 Process control equipment for hazardous locations Class I, Division 2, Groups ABCD, T5
Certifications / DNVTemperature: A (0 to 45°C) Humidity: B (up to 100%) Vibration: A (0.7 g) EMC: B (bridge and open deck)
Certifications / LRENV1
Certifications / KRYes
Certifications / ABSYes
Certifications / BVEC21B Temperature: 5 - 45°C Vibration: 0.7 g EMC: Bridge and open deck
B&R ID code0xDD9F
Status indicatorsI/O function per channel, operating state, module status
Additional power dissipation caused by actuators (resistive) [W]0.36
Safety characteristics
NoteSee section "Safety characteristics".
I/O power supply
Nominal voltage24 VDC
Voltage range24 VDC -15% / +20%
Safe analog inputs
Permissible input signal / VoltageMax. 30.5 V
Max. error at 25°C / Gain / 0.5 to <4 mA<0.3%
Max. error at 25°C / Gain / 4 to 25 mA<0.08%
Max. error at 25°C / Offset / 0.5 to <4 mA<2 µA
Max. error at 25°C / Offset / 4 to 25 mA<6.3 µA
Max. gain drift / 0.5 to <4 mA<1.225 µA/°C
Max. gain drift / 4 to 25 mA<1.225 µA/°C
Max. offset drift / 0.5 to <4 mA<0.735 µA/°C
Max. offset drift / 4 to 25 mA<0.735 µA/°C
Common-mode rejection / DC>70 dB
Common-mode rejection / 50 Hz>70 dB
Input filter / HardwareFirst-order low-pass filter / cutoff frequency 500 Hz
Input filter / SoftwareSinc³ filter
Test voltage / Channel - Bus500 VDC
Test voltage / Channel pair - Channel pair500 VDC
Test voltage / Channel - Ground500 VDC
Safety-related accuracy per channel / Cat. 30.184 mA
Safety-related accuracy per channel / Cat. 40.49 mA
Quantity2 safe input channel pairs
VariantType A
Input typeDifferential input
Digital converter resolution24-bit
Conversion timeSee chapter "I/O update time".
Output formatSAFEINT
LoadUp to hardware revision D3: 230 to 420 Ω, hardware revision E0 or later: 185 to 245 Ω
Input protectionProtection against external supply voltages and overcurrent
Open-circuit detectionYes, using software
Conversion procedureSigma-delta
Common-mode rangeBetween the inputs ±50 V
Nonlinearity<0.003%
Measurement range0.5 to 25 mA
Resolution1 µA/LSB
Overload detectionYes, using software
Filter timeConfigurable between 1 and 66.7 ms
Sensor power supply
Electrical isolation / Sensor power supply - ChannelNo
Electrical isolation / Sensor power supply - Sensor power supplyYes
Nominal voltage29 VDC ±5%
Nominal output currentMax. 60 mA
Short-circuit proofYes, continuous
RDS(on)50 Ω
Behavior on short circuitVoltage cutoff
Operating conditions
Mounting orientation / HorizontalYes
Mounting orientation / VerticalYes
Installation elevation above sea level0 to 2000 m, no limitation
Degree of protection per EN 60529IP20
Ambient conditions
Temperature / Operation / Horizontal mounting orientation-25 to 60°C
Temperature / Operation / Vertical mounting orientation-25 to 40°C
Temperature / DeratingSee section "Derating".
Temperature / Starting temperatureYes, -40°C
Temperature / Storage-40 to 85°C
Temperature / Transport-40 to 85°C
Relative humidity / OperationUp to 100%, condensing
Relative humidity / Storage5 to 95%, non-condensing
Relative humidity / Transport5 to 95%, non-condensing
Mechanical properties
NoteOrder 1x safety-keyed terminal block separately. Order 1x safety-keyed bus module separately.
Pitch25⁺⁰.² mm

Documentation & CAD

Files hosted by B&R Industrial Automation; links open the official download page.

Datasheets

Manuals

3D CAD models

ECAD / EPLAN

Certificates

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Specifications from the official B&R product catalog. Always confirm against the datasheet for your exact revision.