Product Details
Overview
The Allen-Bradley 1771-WH is a robust field wiring arm engineered for PLC-5 I/O systems. Designed without a cover, it provides 21 tin-plated terminals to support up to 16 isolated I/O modules. Its conformal coating ensures long-term reliability in industrial environments while maintaining accurate signal transmission with minimal delay.
Technical Specifications
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Manufacturer: Allen-Bradley
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Model Number: 1771-WH
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Product Type: Field Wiring Arm
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Category: PLC Accessories
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Maximum I/O Modules: 16
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Number of Terminals: 21
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Contact Plating: Tin
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Screw Torque: 7–9 lb·in
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Coating: Conformal coated
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External Power Required: None
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Signal Delay:
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AC Off: 29 ± 8 ms
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DC Off: 30 ± 7 ms
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Compatible Wiring Arm Replacement: 1771-WN
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Weight: 0.20 kg (0.44 lbs)
Key Features
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Supports high-density I/O connections with 21 terminals
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Tin-plated contacts provide reliable conductivity
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Conformal coating safeguards against moisture and dust
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Self-powered, no external power source needed
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Compatible with general-purpose PLC-5 I/O modules
Application Scenarios
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Ideal for wiring PLC-5 modules in industrial automation
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Suitable for applications requiring multiple isolated I/O modules
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Can be used to replace or upgrade older 1771 series wiring arms
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Supports accurate AC/DC signal processing for process control systems
FAQ
Q1: How many I/O modules can the 1771-WH handle?
A1: It supports up to 16 general-purpose isolated I/O modules.
Q2: Is a cover included with this wiring arm?
A2: No, the 1771-WH model is supplied without a cover.
Q3: Does it require external power?
A3: No, the wiring arm operates without external power.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Redundant Automation Systems: Ensuring Continuous Uptime in Critical Control Infrastructure
System reliability directly determines operational profitability across high stakes process industries. Modern industrial automation platforms must eliminate single points of failure to prevent catastrophic shutdowns. Deploying fault tolerant architecture safeguards complex facilities against unexpected hardware glitches, network disruptions, and maintenance outages.
Understanding Types of Noise in Electronic Circuits and Control Systems
Signal integrity directly determines measurement accuracy and loop stability across industrial automation environments. Electronic noise introduces unwanted stochastic interference into analog loops, sensor feedback lines, and digital fieldbus networks. Understanding how intrinsic electronic noise and external electromagnetic interference manifest allows control engineers to optimize signal conditioning and shield sensitive instrumentation effectively.
Why 24V DC Power Supplies Standardize Modern Industrial Automation
Industrial control cabinets worldwide rely on 24V DC as the universal power standard for field instrumentation, sensors, and controllers. Walk into any manufacturing plant, and you will find PLCs, human-machine interfaces (HMIs), and smart actuators running on extra-low voltage DC. Standardizing on 24V DC enhances operational safety, lowers cabinet footprint, and maintains steady control performance across factory networks.