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B&R X20cAI2438

I/O module, 2 analog inputs 4 to 20 mA or 0 to 25 mA

MPN: X20cAI2438
Category: Analog inputs

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12-month warranty (new) · 3-month (used/refurbished)
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What is the B&R X20cAI2438?

2 analog current measurement inputs

Integrated HART protocol

Supports HART variables

Electrically isolated analog channels

Electrically isolated sensor supplies

16-bit digital converter resolution

NetTime timestamp: Moment of measurement, HART image

Specifications

Short description

I/O module

2 analog inputs 4 to 20 mA or 0 to 25 mA

General information

Diagnostics – Module run/error	Yes, using LED status indicator and software
Diagnostics – Inputs	Yes, using LED status indicator and software
Diagnostics – Sensor power supply	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	1.15 W (note: To reduce power dissipation, B&R recommends leaving unused inputs open.)
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 – LR	ENV1
Certifications – KR	Yes
Certifications – ABS	Yes
Certifications – BV	EC33B ; Temperature: 5 - 55°C; Vibration: 4 g; EMC: Bridge and open deck
B&R ID code	0xE1EE
Status indicators	I/O function per channel, operating state, module status, sensor power supply per channel, HART
Additional power dissipation caused by actuators (resistive) [W]	-

Analog inputs

Data output rate – With HART	4.7 to 10 samples per second, configurable using software
Data output rate – Analog	4.7 to 100 samples per second, configurable using software
Output format – 4 to 20 mA	INT 0x0000 - 0x7FFF / 1 LSB = 0x0001 = 488.281 nA
Output format – 0 to 25 mA	INT 0x0000 - 0x7FFF / 1 LSB = 0x0001 = 762.939 nA
Output format – 0 to 25000 µA	INT 0x0000 - 0x61A8 / 1 LSB = 0x0001 = 1000 nA
Max. error – 0 to 25 mA	<0.046% (note: Based on the current measured value.)
Max. error – 4 to 20 mA	<0.046% (note: Based on the current measured value.)
Max. error – 0 to 25 mA	<0.004% (note: Based on the 25 mA measurement range.)
Max. error – 4 to 20 mA	<0.013% (note: Based on the 25 mA measurement range.)
Common-mode rejection – DC	80 dB
Common-mode rejection – 50 Hz	Depends on the sampling rate: e.g. >130 dB for 50 samples per second
Input filter – Hardware	First-order low-pass filter / cutoff frequency 100 Hz
Input filter – Software	Sinc 4 filter
Max. gain drift – 0 to 25 mA	0.003 %/°C (note: Based on the current measured value.)
Max. gain drift – 4 to 20 mA	0.003 %/°C (note: Based on the current measured value.)
Max. offset drift – 0 to 25 mA	0.0002 %/°C (note: Based on the 25 mA measurement range.)
Max. offset drift – 4 to 20 mA	0.0007 %/°C (note: Based on the 25 mA measurement range.)
Test voltage – Channel - Channel	1000 VAC
Test voltage – Channel - Bus	1000 VAC
Test voltage – Channel - Ground	1000 VAC
Input	4 to 20 mA or 0 to 25 mA configurable using software
Input type	Differential input
Digital converter resolution	16-bit
Output format	INT
Load	I_IN ≥ 0.1 mA: R < 8000 Ω ; I_IN ≥ 1 mA: R < 1100 Ω ; I_IN ≥ 4 mA: R < 510 Ω
Input protection	Up to 30 VDC, reverse polarity protection (max. 0.1 A)
Open-circuit detection	Yes, using software
Permissible input signal	0 to 25 mA
Output of digital value during overload	Configurable
Conversion procedure	Sigma-delta
Common-mode range	0 to 7 V
Nonlinearity	<0.003% (note: Based on the 25 mA measurement range.)

Sensor power supply

Max. voltage ripple – Up to 100 kHz	≤2.2 mV
Max. voltage ripple – Up to 1 MHz	≤22 mV
Max. voltage ripple – Higher	≤100 mV
Short-circuit current – Typical	<50 mA
Short-circuit current – Maximum	60 mA
Power consumption	0.75 W per channel
Nominal voltage	25 V ±2%
Nominal output current	Max. 30 mA
Short-circuit proof	Yes, continuous
Behavior on short circuit	Current limiting

HART

Multi-drop operation – Possible	Yes
Multi-drop operation – Stations	5 nodes (when using HART slaves with a nominal current of 4 mA); Up to 15 (taking into account the maximum permissible input signal of 25 mA)
Transmission amplitude – Minimum	400 mV pp
Transmission amplitude – Typical	500 mV pp
Transmission amplitude – Maximum	600 mV pp
Receiving amplitude – Minimum	120 mV pp
Receiving amplitude – Maximum	800 mV pp
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; Sensor power supply isolated from sensor power supply; Sensor power supply not isolated from channel

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 – Horizontal mounting orientation	-25 to 60°C
Temperature – Vertical mounting orientation	-25 to 50°C
Temperature – Derating	-
Temperature – Starting temperature	Yes, -40°C
Temperature – Storage	-40 to 85°C
Temperature – Transport	-40 to 85°C
Relative humidity – Operation	Up to 100%, 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 X20cBM11 separately.
Pitch	12.5 +0.2 mm

Accessories

Required accessories (order separately)

X20cBM11	Bus modules — Bus module for 24 VDC I/O modules; The internal I/O power supply is connected through.
X20TB12	Terminal blocks — Tool-free wiring with push-in technology; Simple wire release using lever; Ability to label each terminal; Plain text labeling also possibl…

Downloads & documentation

Official documents from B&R, downloaded directly from the manufacturer.

Data sheets & manuals

CAD & dimension drawings

Certificates (13)

X20cAI2438: frequently asked questions

When can X20cAI2438 be shipped?

X20cAI2438 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up X20cAI2438 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for X20cAI2438 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for X20cAI2438, subject to availability and destination.