PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-IX is a thermocouple and millivolt input module designed for PLC-5 systems. It functions as an intelligent block transfer module for analog sensor interfacing. The unit provides eight floating differential inputs. Supported thermocouple types include calibration curves E, J, T, K, S, and R. It also accepts analog signals within a direct range of plus or minus 100 millivolts.
This module installs into a single slot of a 1771 I/O chassis. It operates directly from backplane power without requiring an external supply. The module draws 750 milliamps at 5 volts DC. Channel updates across all eight inputs complete within 50 milliseconds. Cold junction compensation operates between 0 and 60 degrees Celsius with an accuracy of 0.5 degrees Celsius. Maximum power dissipation is 4.25 watts, with thermal dissipation reaching 14.5 BTU per hour. Field terminations connect via the Allen-Bradley 1771-WI field wiring arm.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| Backplane Current Load | 750 ms at 5V DC |
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| Category | PLCs |
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| Channel Update Time | 50 ms/8 Channels |
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| Inputs | 8 |
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| Installation | I/O Chassis |
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| Interfacing | Block Transfer Programming |
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| Module Type | Thermocouple/Millivolt Input Module |
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| Operation Temperature Range | 0 to 60 degrees Celsius |
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| Power Dissipation | 4.25 Watts |
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| Product Line | PLC 5 |
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| Thermal Dissipation | 14.5 BTU/hour |
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| Weight | 3.75 lbs (1.70 kg) |
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| Wiring Arm | 1771-WI |
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TECHNICAL INFORMATION
Features
- Provides eight floating differential analog input channels.
- Supports thermocouple types E, J, T, K, S, and R.
- Accepts direct millivolt input ranges of plus or minus 100 millivolts.
- Includes cold junction compensation accurate to plus or minus 0.5 degrees Celsius.
- Updates all eight input channels within 50 milliseconds.
- Connects using the 1771-WI field wiring arm for rapid module replacement.
- Transfers configuration and analog data via block transfer programming in one scan.
TECHNICAL INFORMATION
Connections / Interfaces
- Connects to field temperature sensors via the 1771-WI field wiring arm.
- Communicates across the 1771 backplane using block transfer read and write commands.
TECHNICAL INFORMATION
Installation Guidelines
- Insert the module into any available single slot in an Allen-Bradley 1771 I/O chassis.
- Ensure system power is disconnected before installing or removing the unit.
- Fasten the 1771-WI wiring arm to secure field terminations.
- The swing-arm design allows hardware maintenance without disturbing field signal wiring.
TECHNICAL INFORMATION
Configuration Guidelines
- Execute block transfer write instructions to transfer configuration parameters to module memory.
- Use block transfer read instructions to copy sensor data words to processor memory.
- Block transfer operations complete within a single processor scan.
TECHNICAL INFORMATION
Compatibility
- Mounts in standard Allen-Bradley 1771 I/O chassis assemblies.
- Requires the Allen-Bradley 1771-WI wiring arm for signal connections.
- Interfaces with PLC-5 processors supporting block transfer communication.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSMounts in standard Allen-Bradley 1771 I/O chassis assemblies. Requires the Allen-Bradley 1771-WI wiring arm for signal connections. Interfaces with PLC-5 processors supporting block transfer communication.
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
What sensor types connect to the Allen-Bradley 1771-IX?
The module accepts thermocouple types E, J, T, K, S, and R, as well as ±100 millivolt inputs.
Which field wiring arm is required for the 1771-IX module?
The 1771-IX requires the Allen-Bradley 1771-WI field wiring arm for all field terminations.
What is the channel update rate for the 1771-IX?
The module completes an update cycle across all eight input channels in 50 milliseconds.
What is the reference market price for the 1771-IX?
Observed market reference pricing is approximately 639 USD for refurbished units. Figures are indicative market reference pricing only and are not a final quotation.
