Product Details
Overview
The Allen-Bradley 1771-WD is a dedicated field wiring arm designed for PLC-5 I/O modules. It provides reliable connections for general-purpose isolated I/O modules, ensuring consistent signal integrity with minimal delay. Constructed with durable materials and conformal coating, this wiring arm is suitable for both AC and DC applications.
Technical Specifications
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Manufacturer: Allen-Bradley
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Model Number: 1771-WD
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Product Type: Field Wiring Arm
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Category: PLC Accessories
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Compatible Modules: Up to 8 isolated I/O modules, general purpose
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Number of Terminals: 12
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Contact Plating: Tin
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Screw Torque: 7–9 lb·in
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Coating: Conformal coated for environmental protection
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Power Requirements: None (self-powered)
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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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Weight: 0.09 kg (0.19 lbs)
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Wiring Arm Replacement: Compatible with 1771-WN
Key Features
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Provides secure, reliable connections for PLC-5 I/O modules
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Supports both AC and DC signal inputs up to 120 V
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Conformal coating protects against environmental factors
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Compact, lightweight design simplifies module installation
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Compatible with multiple series PLC-5 chassis and I/O configurations
Application Scenarios
The 1771-WD is ideal for:
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Industrial PLC field installations requiring reliable I/O wiring
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Replacing or upgrading existing PLC-5 wiring arms
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Applications with general-purpose 6-isolated I/O modules
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Ensuring accurate signal transmission in process control systems
FAQ
Q1: How many I/O modules can the 1771-WD support?
A1: It supports up to 8 general-purpose isolated I/O modules.
Q2: Is external power required for operation?
A2: No external power is needed; the wiring arm is self-powered.
Q3: What is the typical AC signal delay?
A3: The AC off signal delay is approximately 29 ± 8 ms.
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.