B&R X20AO2438

Name: B&R X20AO2438
Brand: B&R Industrial Automation
SKU: X20AO2438

2 analog current outputs HART protocol integration Support for HART variables Electrically isolated analog channels 16-bit digital converter resolution OSP mode NetTime timestamp: HART image The module is equipped with 2 current outputs with 16-bit digital converter resolution. It supports the HART communication standard for data transfer, parameter configuration and diagnostics. The 2 channels are electrically isolated from each other. The user can select between the 3 output ranges 4 to 20 mA, 0 to 20 mA and 0 to 24 mA.

Lifecycle & replacement

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Technical specifications

Short description

I/O module

2 analog outputs 4 to 20 mA, 0 to 20 mA or 0 to 24 mA

General information

Diagnostics / Module run/error	Yes, using LED status indicator and software
Diagnostics / Outputs	Yes, using LED status indicator and software
Diagnostics / HART link	Yes, using LED status indicator and software
Diagnostics / HART error	Yes, using LED status indicator and software
Power consumption / Bus	0.05 W
Power consumption / Internal I/O	1.65 W
Certifications / CE	Yes
Certifications / UKCA	Yes
Certifications / CRA (Cyber Resilience Act)	In preparation
Certifications / ATEX	Zone 2, II 3G Ex nA nC IIA T5 Gc IP20, Ta (see X20 user's manual) FTZÚ 09 ATEX 0083X
Certifications / UL	cULus E115267 Industrial control equipment
Certifications / HazLoc	cCSAus 244665 Process control equipment for hazardous locations Class I, Division 2, Groups ABCD, T5
Certifications / DNV	Temperature: B (0 to 55°C) Humidity: B (up to 100%) Vibration: B (4 g) EMC: B (bridge and open deck)
Certifications / CCS	Yes
Certifications / LR	ENV1
Certifications / KR	Yes
Certifications / ABS	Yes
Certifications / BV	EC33B Temperature: 5 - 55°C Vibration: 4 g EMC: Bridge and open deck
Certifications / KC	Yes
B&R ID code	0xB3AA
Status indicators	I/O function per channel, operating state, module status, HART
Additional power dissipation caused by actuators (resistive) [W]	-

Analog outputs

Data output rate / With HART	210 ms (default)
Data output rate / Analog	1 ms without ramp
Max. error / Gain / 4 to 20 mA	±0.025%
Max. error / Gain / 0 to 20 mA	±0.022%
Max. error / Gain / 0 to 24 mA	±0.02%
Max. error / Offset / 4 to 20 mA	±0.025%
Max. error / Offset / 0 to 20 mA	±0.022%
Max. error / Offset / 0 to 24 mA	±0.02%
Output format / 4 to 20 mA	INT 0x0000 to 0x7FFF / 1 LSB = 0x0001 = 488.281 nA
Output format / 0 to 20 mA	INT 0x0000 to 0x7FFF / 1 LSB = 0x0001 = 610.352 nA UINT 0x0000 to 0xFFFF / 1 LSB = 0x0001 = 305.176 nA
Output format / 0 to 24 mA	INT 0x0000 to 0x5DC0 / 1 LSB = 0x0001 = 1000 nA
Max. gain drift / 4 to 20 mA	±0.0055%/°C
Max. gain drift / 0 to 20 mA	±0.005%/°C
Max. gain drift / 0 to 24 mA	±0.005%/°C
Max. offset drift / 4 to 20 mA	±0.0035%/°C
Max. offset drift / 0 to 20 mA	±0.002%/°C
Max. offset drift / 0 to 24 mA	±0.002%/°C
Error caused by load change / 4 to 20 mA	0.14%
Error caused by load change / 0 to 20 mA	0.1%
Error caused by load change / 0 to 24 mA	0.1%
Test voltage / Channel - Channel	1000 VAC
Test voltage / Channel - Bus	1000 VAC
Test voltage / Channel - Ground	1000 VAC
Output	4 to 20 mA, 0 to 20 mA or 0 to 24 mA configurable using software
Digital converter resolution	16-bit
Settling time on output change over entire range	2 ms to 20 s, configurable using software
Output protection	Short-circuit proof, overvoltage protection (up to 30 VDC)
Open-circuit detection	Yes, using hardware and software
Data format	INT
Load per channel	Max. 600 Ω
Short-circuit proof	Yes, continuous
Output filter	Active second-order low-pass filter / Cutoff frequency 19 Hz Configurable slew rate
Nonlinearity	<0.003%

HART

Multi-drop operation / Possible	Yes
Multi-drop operation / Stations	Up to 15
Transmission amplitude / Minimum	400 mVpp
Transmission amplitude / Typical	500 mVpp
Transmission amplitude / Maximum	600 mVpp
Receiving amplitude / Minimum	120 mVpp
Receiving amplitude / Maximum	1500 mVpp
Transfer rate	1200 bit/s
Operating frequencies	1200 Hz / 2200 Hz
Burst operation possible	Yes

Electrical properties

Electrical isolation

Channel isolated from channel and bus

Operating conditions

Mounting orientation / Horizontal	Yes
Mounting orientation / Vertical	Yes
Installation elevation above sea level / 0 to 2000 m	No limitation
Installation elevation above sea level / >2000 m	Reduction of ambient temperature by 0.5°C per 100 m
Degree of protection per EN 60529	IP20

Ambient conditions

Temperature / Operation / Horizontal mounting orientation	-25 to 60°C
Temperature / Operation / Vertical mounting orientation	-25 to 50°C
Temperature / Derating	See section "Derating".
Temperature / Storage	-40 to 85°C
Temperature / Transport	-40 to 85°C
Relative humidity / Operation	5 to 95%, non-condensing
Relative humidity / Storage	5 to 95%, non-condensing
Relative humidity / Transport	5 to 95%, non-condensing

Mechanical properties

Note	Order 1x terminal block X20TB12 separately. Order 1x bus module X20BM11 separately.
Pitch	12.5⁺⁰.² mm

Documentation & CAD

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

Datasheets

Datasheet X20(c)AO2438(de)
Datasheet X20(c)AO2438(en)

Manuals

3D CAD models

ECAD / EPLAN

X20 EPLAN P8 from V2.4

Certificates

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