Product image is representative; revision or series may vary.
Contact us to request a specific version.
Contact us to request a specific version.
1794-IE8H Allen-Bradley
Original price
$1,737.50
-
Original price
$2,474.98
Original price
$1,737.50
$1,737.50
-
$2,474.98
Current price
$1,737.50
Trusted By
Product Details
Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.
Product Overview
The 1794-IE8H is an Allen-Bradley FLEX I/O HART-enabled analog input module with eight single-ended input channels. It operates on a 24 V DC backbone and communicates over the FLEX I/O bus. The module functions as part of FLEX, FLEX Ex, or FLEX XT distributed I/O systems and is used for acquiring analog signals (0…20 mA) from HART-enabled field transmitters. It's typically deployed in process monitoring, instrumentation loops, and industrial control panels. Part number 1794-IE8H is discontinued as of March 31, 2026, with 1794-IF8IH listed as the engineering replacement.
Best Suited For
- FLEX I/O distributed I/O systems
- HART-enabled field transmitter signal acquisition
- Process monitoring applications
- On-machine analog input interfacing
Channels
8 single-ended inputs
Resolution
16 bit
Power
24 V DC nominal, 19.2…31.2 V DC, 190 mA @ 24 V DC
Power dissipation
3.9 W @ 31.2 V DC (max)
Technical Specifications
I/O & Electrical
Input channels
8 single-ended, HART enabled
Functional input range
>17 V @ 22 mA; >23 V @ 0 mA
Resolution
16 bit
Data format
2's complement, configurable: mA, integer, % of full scale
Conversion type
Successive approximation
Conversion rate
10 ms (50 Hz) / 8.33 ms (60 Hz)
Step response (to 99 %)
80 ms
Update to FLEX bus (all channels)
≤ 10 ms
FlexBus current
5 V DC, 80 mA
Isolation (field/system)
50 V continuous, basic insulation
Accuracy
±0.1 % full scale @ 20 °C
Accuracy drift (0…55 °C)
±0.05 % full scale
Temperature drift
50 ppm/°C
Conformal coating
Yes
Communication & Power
Input voltage
24 V DC nominal (19.2…31.2 V DC incl. ripple)
Input current
190 mA @ 24 V DC
Power dissipation
3.9 W @ 31.2 V DC
Thermal dissipation
13.5 BTU/hr @ 31.2 V DC
Physical & Environmental
Operating temperature
-20…55 °C (-4…131 °F)
Dimensions (module/base installed)
46 × 94 × 75 mm (1.8 × 3.7 × 2.9 in); 94 × 94 × 91 mm (3.7 × 3.7 × 3.6 in)
Enclosure style
Open-style (no enclosure)
Terminal base torque
0.8 Nm (7 lb-in)
Wire type
Shielded
Wire size
As per terminal base
Certifications
CEUL Listed HazardousUL ListedCSA Listed HazardousCSA ListedATEXIECExUKCAChina CCCAustralian RCM
