PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-WI is a PLC-5 Thermocouple Wiring Arm designed for 8 I/O channel connections. It features 18 screw terminals for field wiring termination without disturbing the host I/O module. The assembly incorporates gold-plated contacts to ensure stable low-voltage signal transmission from thermocouple sensors.
This wiring arm includes conformal coating protection against harsh industrial operating environments. Terminal screws support an installation torque rating of 7 to 9 pound-inches. The unit operates without external power requirements and supports modular replacement during system maintenance.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Category | PLCs |
|---|
| Product Line | PLC 5 |
|---|
| GTIN | 10662468206201 |
|---|
| Weight | 0.31 lbs (0.14 kg) |
|---|
| Module Type | Wiring Arm |
|---|
| Max Number of I/O | 8 I/O |
|---|
| Number of Terminals | 18 Terminals |
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| Screw Torque | 7-9 lb*in |
|---|
| Typical Application | Thermocouple |
|---|
| Coating | Conformal Coat |
|---|
| Required External Power | None |
|---|
| Typical AC Signal Delay (Off) | 29 (+/- 8) ms |
|---|
| Typical DC Signal Delay (Off) | 30 (+/- 7) ms |
|---|
| Wiring Arm | 1771-WN |
|---|
TECHNICAL INFORMATION
Features
- Provides 18 screw terminals for field wiring termination.
- Supports up to 8 I/O channels for thermocouple signal routing.
- Conformal coating safeguards electrical contacts in harsh operating environments.
- Gold contact plating provides low contact resistance for millivolt thermocouple measurements.
- Operates passively without requiring an external operating power supply.
TECHNICAL INFORMATION
Applications
- Thermocouple temperature sensor field wiring termination in PLC-5 systems.
- Industrial temperature monitoring in environments requiring conformal coating protection.
TECHNICAL INFORMATION
Connections / Interfaces
- Equipped with 18 screw-clamp wire termination points.
- Mates directly to compatible 1771 thermocouple I/O modules.
TECHNICAL INFORMATION
Installation Guidelines
- Secure all field wiring conductors to terminals using a torque of 7 to 9 lb-in.
- Seat the wiring arm firmly into the 1771 I/O chassis swing-arm pivot.
- Verify proper pin alignment before engaging terminal connections with the mating I/O module.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley 1771 PLC-5 thermocouple I/O modules.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley 1771 PLC-5 thermocouple I/O modules.
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
Does the 1771-WI wiring arm require external operating power?
No. The Allen-Bradley 1771-WI is a passive terminal arm and requires no external power source.
What is the recommended screw torque for field terminal wiring on the 1771-WI?
Field wiring screws on the 1771-WI should be tightened to 7 to 9 pound-inches.
What is the typical market price for the Allen-Bradley 1771-WI?
Observed market pricing for surplus units is approximately $79.00 USD. This figure is an indicative market reference only, not a final quotation.
