Allen-Bradley 1771-WI PLC-5 Thermocouple Wiring Arm
$123.00
$320.00
Description
Product Description
The 1771-WI terminal wiring arm from Allen-Bradley is a field wiring accessory developed for Bulletin 1771 and PLC-5 I/O systems. This component provides a secure connection interface between field instrumentation and compatible PLC input modules, particularly in thermocouple signal applications.
Designed with 18 terminal connections and support for up to 8 I/O channels, the Allen-Bradley 1771-WI simplifies installation and maintenance within rack-mounted PLC systems. Gold-plated contacts improve signal integrity and minimize connection resistance, making the unit suitable for low-level analog and temperature measurement signals.
The wiring arm features conformal-coated construction for additional protection against moisture, dust, and corrosive industrial environments. It does not require an independent power source and installs directly onto compatible 1771 series modules.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen-Bradley |
| Model Number | 1771-WI |
| Product Family | PLC-5 / Bulletin 1771 |
| Product Type | Wiring Arm |
| Maximum Supported I/O | 8 channels |
| Terminal Count | 18 terminals |
| Typical Application | Thermocouple input wiring |
| Contact Material | Gold-plated contacts |
| Recommended Screw Torque | 7–9 lb-in |
| Protective Coating | Conformal coated |
| External Power Requirement | None |
| Typical AC OFF Delay | 29 ms ±8 ms |
| Typical DC OFF Delay | 30 ms ±7 ms |
| Compatible Wiring Configuration | 1771-WN |
| Installation Type | Rack-mounted module interface |
| Weight | 0.14 kg |
Design Features
The 1771-WI wiring arm is intended for dependable signal termination in PLC-5 control systems where stable analog or thermocouple connections are required.
Primary features include:
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18-point terminal connection layout
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Support for up to 8 I/O signal channels
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Optimized for thermocouple signal applications
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Gold-plated terminal contacts for improved conductivity
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Conformal coating for environmental durability
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Direct integration with Bulletin 1771 modules
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No separate field power supply required
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Simplified module replacement and maintenance access
Typical Applications
The 1771-WI is commonly installed in industrial environments involving temperature monitoring and low-level analog signal interfacing.
Common application examples include:
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Thermocouple input systems
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Process temperature monitoring
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PLC-5 analog I/O installations
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Industrial furnace controls
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Heat treatment systems
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Process automation panels
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Manufacturing temperature supervision
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Retrofit PLC maintenance projects
FAQ
What is the primary use of the 1771-WI wiring arm?
The 1771-WI is mainly used for thermocouple and low-level signal wiring in PLC-5 and Bulletin 1771 systems.
Does the wiring arm require an external power source?
No. The unit operates without a dedicated external power supply.
How many terminals are included?
The wiring arm provides 18 field wiring terminals supporting up to 8 I/O channels.
Why are gold-plated contacts used?
Gold-plated contacts help reduce signal degradation and improve reliability in sensitive analog and thermocouple applications.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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