IAC

B&R X20ST4492

2 safe analog input pairs for thermocouples For sensor types J, K, N, S, R, C, T, raw value measurement 1 safe analog input pair for resistance temperature measurement For PT100 and PT1000 Configurable sensor type per channel 24-bit digital converter resolution Galvanically isolated analog channel pairs Input filter configurable Integrated terminal temperature compensation 2x PT1000 sensor integrated in the terminal (X20TB5E) 2x external PT1000 sensor can be connected (X20TB5F) The module is equipped with 2 safe analog input pairs for J, K, N, S, R, C and T thermocouple sensors and 1 safe analog input pair for PT100/PT1000 resistance temperature measurement. The safe temperature module is suitable for safely acquiring temperatures 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 analog inputs for thermocouples, 1x 2 safe analog inputs for PT100/PT1000 sensors, channel pairs galvanically isolated, integrated terminal temperature compensation, integrated temperature sensor in terminal block X20TB5E
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/O1.2 W
Electrical isolation / Channel - BusYes
Electrical isolation / Channel - ChannelNo
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, up to SIL 3 IEC 62061, up to SIL 3 ISO 13849-1, up to Cat. 4 / PL e IEC 61511, up to SIL 3
Certifications / Functional safety #3EN 50156-1
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 cULus E537419 Engine generator controller
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 / CCSYes
Certifications / LRENV1
Certifications / KRYes
Certifications / ABSYes
Certifications / BVEC21B Temperature: 5 - 45°C Vibration: 0.7 g EMC: Bridge and open deck
Certifications / KCYes
B&R ID code0xB419
Status indicatorsI/O function per channel, operating state, module status
Additional power dissipation caused by actuators (resistive) [W]-
Safety characteristics
NoteSee section "Safety characteristics".
I/O power supply
Nominal voltage24 VDC
Voltage range24 VDC -15% / +20%
Thermocouple temperature inputs
Measurement range / Sensor temperature / Type J: Fe-CuNi-210.0 to 1200.0°C
Measurement range / Sensor temperature / Type K: NiCr-Ni-270.0 to 1372.0°C
Measurement range / Sensor temperature / Type N: NiCrSi-NiSi-270.0 to 1300.0°C
Measurement range / Sensor temperature / Type S: PtRh10-Pt-50.0 to 1768.0°C
Measurement range / Sensor temperature / Type R: PtRh13-Pt-50.0 to 1768.0°C
Measurement range / Sensor temperature / Type C: WRe5-WRe260 to 2320.0°C
Measurement range / Sensor temperature / Type T: Cu-CuNi-270.0 to 400.0°C
Measurement range / Voltage±65 mV
Measurement range / Max. internal resistance of source during voltage measurement20 Ω
Resolution / Sensor temperature1 LSB = 0.1°C
Resolution / Voltage1 LSB = 2 µV
Basic accuracy / Type J: Fe-CuNi1.41°C
Basic accuracy / Type K: NiCr-Ni1.81°C
Basic accuracy / Type N: NiCrSi-NiSi1.73°C
Basic accuracy / Type S: PtRh10-Pt3.10°C
Basic accuracy / Type R: PtRh13-Pt3.10°C
Basic accuracy / Type C: WRe5-WRe263.48°C
Basic accuracy / Type T: Cu-CuNi0.74°C
Basic accuracy / Voltage78 µV
Max. offset drift / Type J: Fe-CuNi0.0297°C per °C
Max. offset drift / Type K: NiCr-Ni0.0427°C per °C
Max. offset drift / Type N: NiCrSi-NiSi0.0471°C per °C
Max. offset drift / Type S: PtRh10-Pt0.1637°C per °C
Max. offset drift / Type R: PtRh13-Pt0.1455°C per °C
Max. offset drift / Type C: WRe5-WRe260.1068°C per °C
Max. offset drift / Type T: Cu-CuNi0.0335°C per °C
Max. offset drift / Voltage1.69 µV per °C
Terminal temperature compensation / Accuracy of internal terminal temperature15°C at static temperatures and during safe operation
Common-mode rejection / DC>70 dB
Common-mode rejection / 50 Hz>70 dB
Safety-related accuracy per channel / Type J: Fe-CuNi35.25°C
Safety-related accuracy per channel / Type K: NiCr-Ni47.62°C
Safety-related accuracy per channel / Type N: NiCrSi-NiSi51.81°C
Safety-related accuracy per channel / Type S: PtRh10-Pt150.90°C
Safety-related accuracy per channel / Type R: PtRh13-Pt134.54°C
Safety-related accuracy per channel / Type C: WRe5-WRe26111.36°C
Safety-related accuracy per channel / Type T: Cu-CuNi30.82°C
Safety-related accuracy per channel / Voltage2080 µV
Quantity2 safe input channel pairs
VariantType thermocouple
Digital converter resolution24-bit
Filter timeConfigurable between 1 and 66.7 ms
Output formatSAFEINT
Terminal temperature compensationInternal / External
Sensor standardEN 60584
Conversion procedureSigma-delta
Linearization methodInternal
Permissible input signalMax. ±1 V
Input filterFirst-order low-pass filter / cutoff frequency 500 Hz
Max. gain drift0.013 %/°C
Common-mode range±4 V within channel pair, ±50 V between 2 channel pairs
Crosstalk between channels≤70 dB
Insulation voltage between channel and bus500 VDC
Resistance measurement temperature inputs
Measurement range / Pt100-200.0 to 850.0°C
Measurement range / Pt1000-200.0 to 850.0°C
Basic accuracy / Pt1001.89°C
Basic accuracy / Pt10000.53°C
Max. offset drift / Pt1000.0525°C per °C
Max. offset drift / Pt10000.0053°C per °C
Temperature sensor resolution / Pt1001 LSB = 0.1°C
Temperature sensor resolution / Pt10001 LSB = 0.1°C
Input filter / Cutoff frequency500 Hz first-order
Safety-related accuracy per channel / Pt10012.60°C
Safety-related accuracy per channel / Pt10008.93°C
Quantity1 safe input channel pair
VariantType PT100/PT1000
Measuring current262 µA ±5%
Max. gain drift0.004 %/°C
Max. line length50 m
Max. line resistance5 Ω
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 orientation0 to 60°C
Temperature / Operation / Vertical mounting orientation0 to 50°C
Temperature / DeratingSee section "Derating".
Temperature / Storage-40 to 85°C
Temperature / Transport-40 to 85°C
Relative humidity / Operation5 to 95%, non-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.