PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1797-IE8H is an I/O Module in the FLEX I/O series. This HART analog input device provides eight single-ended non-isolated input channels. It delivers 16-bit analog resolution with an accuracy rating of 0.1 percent at 20 degrees Celsius. Each channel features a fast step response time of 4 milliseconds. Eight red fault indicators and one green power indicator provide clear visual operational feedback.
The module operates within an ambient temperature span from -20 to 70 degrees Celsius. Relative humidity tolerance spans from 5 to 95 percent noncondensing. Field-side power consumption reaches 7.5 Watts, while power dissipation is measured at 5.2 Watts. When linked across a ControlNet network, it transmits process signals and alarms to a controller. Personnel must prevent electrostatic discharge exposure during handling and field mounting procedures.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| GTIN | 10612598307163 |
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| Weight | 0.75 lbs (0.34 kg) |
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| Inputs | 8 |
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| Input Type | Single-ended Non-isolated |
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| Resolution | 16 bits |
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| Data Format | Configurable |
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| Functional Data Range | 15V at 22mA |
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| Module Field-side Power Consumption | 7.5 W |
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| Power Dissipation | 5.2 W |
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| Thermal Dissipation | 17.75 BTU/hour |
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| Step Response | 4 ms |
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TECHNICAL INFORMATION
Features
- Eight single-ended non-isolated analog input channels with HART communication capability.
- Delivers 16-bit conversion resolution with 0.1 percent accuracy at 20 degrees Celsius.
- Rapid step response time of 4 milliseconds per input.
- Integrated diagnostic indicators including eight channel fault LEDs and one status power LED.
- Low thermal dissipation rated at 17.75 BTU per hour.
TECHNICAL INFORMATION
Applications
- Analog process signal acquisition in distributed ControlNet systems.
- Field instrument monitoring requiring HART digital communication protocols.
TECHNICAL INFORMATION
Connections / Interfaces
- Interfaces with ControlNet networks to share process values with PLC processors.
- Accommodates interconnect cables and industrial terminals for field wiring and calibration.
TECHNICAL INFORMATION
Installation Guidelines
- Maintain strict electrostatic discharge precautions when handling the module.
- Operate the unit within the specified temperature limits of -20 to 70 degrees Celsius.
- Verify that field-side power supplies meet the 7.5 Watt consumption rating.
TECHNICAL INFORMATION
Configuration Guidelines
- Connect through a ControlNet network to exchange channel data and alarms with a PLC processor.
- Select appropriate configurable data formats to match system communication requirements.
- Perform periodic calibration in a FLEX Ex I/O setup using a precision current source and meter.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley FLEX Ex I/O mounting structures and ControlNet network adapters.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley FLEX Ex I/O mounting structures and ControlNet network adapters.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
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
How many input channels does the 1797-IE8H provide?
The module provides eight single-ended, non-isolated analog inputs supporting HART field communications.
What are the power and thermal dissipation ratings for the 1797-IE8H?
The unit consumes 7.5 Watts on the field side, with 5.2 Watts power dissipation and 17.75 BTU/hour thermal dissipation.
What tools are needed for calibrating the 1797-IE8H?
Calibration requires a precision current source, a precision current meter, an industrial terminal, and an interconnect cable.
