Rated 4.6 with 8 reviews


Revisions: Ser A Ser B


The Allen-Bradley 1794-IE8 Flex I/O High-Density Analog Module has 8 Single-ended Inputs, a 5.13 ?A/cnt Resolution Voltage Current, and a 256 ?s Conversion Rate. It also operates with a +/- 10V Input Voltage Terminal and a 60 mA FlexBus Current.

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About 1794-IE8

The Allen-Bradley 1794-IE8 is a FLEX selectable analog input module. This 24 Volts DC module has 8 single-ended non-isolated inputs and 3 key switch positions. It has a 12-bits unipolar resolution with 11 bits + sign bipolar input resolution. No calibration beyond the factory setting is required for this module. It measures 3.7 x 2.1 x 31.8 inches and can be mounted on a DIN rail or panel mount. The 1794-IE8 module can be installed on a 1794-TB2, 1794-TB3S, 1794-TB3ST, 1794-TB3T, or a 1794-TB3 terminal base unit. It also comes with a power and status indicator and has an open-style enclosure. This module has a voltage specification of 24 Volts DC nominal, 10.5 to 31.2 Volts DC including the 5% AC ripple, a current specification of 60 mA, a voltage certification of 24 Volts DC, and a current certification of 0 to 10 Volts that is user-configurable. The input voltage terminal has a specification of +/-10 Volts and a certification of 0 to 20 mA, while the input current terminal has a specification of 4 to 20 mA and certification of 0 to 20 mA. It also has a voltage of 2.56 mV/cnt (unipolar) and 5.13 mV/cnt (bipolar) as well as a current of 5.13 µA/cnt. This module has a maximum voltage overload of 30 Volts continuous and a maximum current overload of 32 mA continuous, but there is only one channel for each.

The maximum power dissipation of the 1794-IE8 module is 3 W and the thermal dissipation is 10.2 BTU/hour, both at 31.2 Volts DC. It has an operating vibration of 5 g at 10 to 500 Hertz. Its operating shock is 30 g, while its non-operating shock is 50 g. The operating temperature range of this module is -20 to 55 degrees Celsius while its storage temperature range is -40 to 85 degrees Celsius. The 1794-IE8 module has a current input and voltage input accuracies of 0.20% full scale at 25 degrees Celsius for both, although the voltage input includes the gain, off-set, repeatability, and nonlinearity error terms. The step response to 63% is 9.4 milliseconds for the voltage terminal and 18.2 milliseconds for the current terminal. It has an absolute accuracy of 0.2% full scale at 25 degrees Celsius and accuracy drift with a temperature of 0.00428% full scale per degree Celsius for the voltage terminal and 0.00407% full scale per degree Celsius for the current terminal.

Technical specifications:

Manufacturer:Rockwell Automation
Part Number/Catalog No.:1794-IE8
Product Type:Flex I/O High-Density Analog Module
Inputs:8 Single-ended
Resolution Voltage Current:5.13 Amps/cnt
Conversion Rate:256 seconds
Input Current Terminal:4 to 20 mA
Input Voltage Terminal: +/- 10 Volts
FlexBus Current:60 mA
External DC Power Supply:60 mA at 24 Volts DC
Isolation Voltage:50 Volts Continuous
Power Dissipation:3.0W at 31.2 Volts DC
Thermal Dissipation:10.2 BTU/hour at 31.2 Volts DC


Question: What is the difference between 1794-IE8 Series A and Series B?

Answer: 1794-IE8 Series A produces either 2 Volts or 4 mA until the module is configured. 1794-IE8 Series B has an off position for the range selection tables, enabling it to produce 0V or 0mA. Additionally, Series B has a Power-Up bit in Read word, whereas Series A does not. For additional differences, see your user manual. 


Question: Can this module be purchased with a warranty?

Answer: Yes, the 1794-IE8 comes with a free one-year warranty from DO Supply, Inc.


Question: What is this module’s power dissipation?

Answer: The 1794-IE8 has a power dissipation of around 3.0 Watts at a DC Voltage of 31.2.


Question: How many inputs does this module have?

Answer: The 1794-IE8 has a total of 8 inputs, all of which are single-ended.


Question: Where can I send the 1794-IE8 to be repaired?

Answer: DO Supply, Inc. offers a variety of repair services for the 1794-IE8.


Question: Can the 1794-IE8 be panel-mounted?

Answer: Yes, the 1794-IE8 can be panel-mounted.

Type Lead Time Price Action
Repair Service 2-4 weeks $374.40Add to Cart

Our highly skilled technicians can repair your 1794-IE8. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.

Please refer to the manual for more information about the 1794-IE8 such as the wiring diagrams, data sheets, firmware information and migration or obsolescence details.

Revision Part # Also Known as Availability
1794-IE8 Ser A
1794-IE8/A, Series A, Rev A Request Quote
1794-IE8 Ser B
1794-IE8/B, Series B, Rev B Request Quote

Common misspellings: 1794IE8