PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1794-IE8 is an eight-channel FLEX I/O Analog Input Module. It provides high-density analog signal processing across industrial automation networks. The module processes unipolar signals with 12-bit resolution. It handles bipolar signals with 11-bit plus sign resolution. All eight channels convert incoming analog data within 256 microseconds. Input circuits accept plus or minus 10-volt signals and 4 to 20-milliamp current loops.
This unit operates on a nominal 24-volt DC external power source. Permissible external supply voltage spans from 19.2 to 31.2 volts DC. The module draws 60 milliamps of supply current at 24 volts DC. FlexBus backplane current consumption is 60 milliamps. Maximum power dissipation reaches 3 watts with 10.2 BTU per hour thermal dissipation. A front green LED indicator confirms active operational power status. Operating ambient temperature ranges from 0 to 55 degrees Celsius.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Conversion Rate | 256 µs All Channels |
|---|
| Indicators | 1 Green Power Indicator |
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| Isolation Voltage | 850 Volts DC; No Isolation Between Individual Channels |
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| Maximum Power Dissipation | 3 Watts at 31.2 Volts DC |
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| Maximum Thermal Dissipation | 10.2 BTU/hr at 31.2 Volts DC |
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| Number of Inputs | 8 Single-Ended, Non-Isolated Inputs |
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| Operating Temperature Range | 0 to 55 Degrees Celsius |
|---|
| Product Line | Flex I/O 1794 |
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| Resolution | 12 Bits - Unipolar; 11 Bits Plus Sign - Bipolar |
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| Supply Current | 60 Milliamps at 24 Volts DC |
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| Supply Voltage | 24 Volts DC Nominal |
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| UPC | 612598137817 |
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| Voltage Range | 19.2 to 31.2 Volts DC |
|---|
| Weight | 0.56 lbs (0.26 kg) |
|---|
TECHNICAL INFORMATION
Features
- Features eight single-ended non-isolated analog inputs.
- Supports 12-bit unipolar and 11-bit plus sign bipolar resolution.
- Converts all eight channels within 256 microseconds.
- Accepts standard 4 to 20 milliamp and plus or minus 10-volt signals.
- Includes a front green LED indicator for power monitoring.
- Rated for operation between 0 and 55 degrees Celsius.
TECHNICAL INFORMATION
Connections / Interfaces
- Supports 4 to 20 milliamp current loop field wiring.
- Accommodates plus or minus 10-volt DC analog voltage inputs.
- Connects to the FLEX I/O backplane using 60 milliamps of FlexBus current.
TECHNICAL INFORMATION
Installation Guidelines
- Mount the module directly onto a compatible 1794 terminal base unit.
- Maintain operating ambient temperatures between 0 and 55 degrees Celsius.
- Supply external direct-current power between 19.2 and 31.2 volts DC.
- Plan field wiring carefully because channels share a common ground reference.
TECHNICAL RESOURCES
Documentation
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What input signals does the Allen-Bradley 1794-IE8 support?
The module accepts 4 to 20 milliamp current signals and plus or minus 10-volt direct-current inputs.
What is the signal conversion rate of the 1794-IE8 module?
The module executes an analog conversion rate of 256 microseconds for all eight channels.
Does the 1794-IE8 offer channel-to-channel isolation?
No, individual channels are single-ended and non-isolated from each other. The module provides 850 volts DC isolation to system ground.
What is the reference price for the 1794-IE8 module?
Observed market reference pricing is approximately 289 USD for refurbished units. These figures are indicative market reference pricing only. They do not constitute a final quotation.
