Allen-Bradley 1771-IQ PLC-5 DC Selectable Input Module

SKU 1771-IQ

In stock

12-month warranty
Free returns within 30 days

Manufacturer: Allen-Bradley
Product No.: 1771-IQ
Origin United States
Product Type: PLC Module
Payment: T/T, Western Union
Weight: 1.0 kg
Shipping port: Xiamen
Warranty: 12 months

Product Description

Description

The Allen-Bradley 1771-IQ is a DC selectable input module designed for use within the classic Allen-Bradley PLC-5 and 1771 I/O chassis environments. This robust industrial module features eight switch-selectable inputs configured to support either current sourcing or current sinking applications, accommodating both high-true and low-true logic structures. Ideal for complex automation tasks, the 1771-IQ offers versatile filtering options with switch-selectable input delays, allowing engineers to switch between normal operational modes and fast response configurations depending on specific application demands.

Engineered for reliable performance in demanding factory floor environments, the module handles a customer supply voltage range of 5VDC to 30VDC. Configuration switches located on the hardware must be set prior to installation in either a Series A or Series B 1771 I/O chassis backplane. Its flexible design simplifies integration into legacy control architectures requiring adaptable discrete signal processing.

Features

Eight switch-selectable inputs supporting current sourcing or current sinking devices
Configurable for high-true or low-true logic operation
Selectable input signal delay times: normal mode (12ms nominal) or fast mode (under 1ms)
Compatible with Series A and Series B 1771 I/O chassis backplanes
Comprehensive optical isolation rated at 1500VAC rms for enhanced noise immunity
On-board hardware configuration switches for logic and delay settings

Applications

Legacy Allen-Bradley PLC-5 automation and control systems
Discrete manufacturing and assembly lines
Process control monitoring requiring flexible sinking/sourcing signal matching
Industrial machinery upgrade and maintenance projects

Technical Specifications

Parameter	Specification
Manufacturer	Allen-Bradley / Rockwell Automation
Exact Model	1771-IQ
Product Type	DC Selectable Input Module
Module Family	PLC-5 / 1771 Universal I/O
Inputs per Module	8 (switch-selectable sinking/sourcing)
Customer Supply Voltage Range	5 to 30 VDC
Nominal Input Current	5mA at 5VDC to 25mA at 30VDC
Input Impedance	1.2 kOhms nominal
Input Signal Delay	Fast: <1ms; Normal: 12ms nominal (5ms min, 26ms max)
Backplane Current Draw	150 mA maximum
Isolation Voltage	1500VAC rms
Power Dissipation	0.8 to 6.8 W
Thermal Dissipation	2.7 to 23.2 BTU/hr
Country of Origin	United States

Installation Guidelines

Ensure all power to the 1771 I/O chassis is turned off before inserting or removing the module to prevent electrical shock or equipment damage.

Set the internal hardware switches for logic definition (high/low true) and input delay times prior to mounting the module into the chassis.

Securely seat the 1771-IQ into the designated slot of the Series A or Series B 1771 I/O chassis and fasten retaining screws.

Connect field wiring to the corresponding swing-arm connector associated with the 1771 I/O chassis slot.

Shipping & Returns

Global Express Shipping

Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our technical warranty.

FAQ

What chassis types are compatible with the Allen-Bradley 1771-IQ module?

The Allen-Bradley 1771-IQ DC selectable input module is designed specifically for integration within classic Allen-Bradley PLC-5 and 1771 I/O chassis environments. It seamlessly mounts into both Series A and Series B 1771 I/O chassis backplanes. Proper hardware configuration of internal switches must be completed prior to inserting the unit into the rack.

How many inputs does the Allen-Bradley 1771-IQ support and what logic configurations are available?

The Allen-Bradley 1771-IQ features eight discrete switch-selectable inputs configured to support current sourcing or current sinking applications. This flexibility accommodates both high-true and low-true logic structures to match diverse field device requirements. On-board hardware configuration switches allow engineers to easily set these logic parameters prior to installation.

What is the operational input voltage range for the Allen-Bradley 1771-IQ?

The Allen-Bradley 1771-IQ handles a customer supply voltage range spanning from 5VDC to 30VDC. The nominal input current scales accordingly, ranging from 5mA at 5VDC up to 25mA at 30VDC. This wide operational voltage range makes it highly adaptable for various legacy industrial control architectures.

Can the input response times be adjusted on the Allen-Bradley 1771-IQ?

Yes, the Allen-Bradley 1771-IQ offers versatile filtering options with switch-selectable input signal delay times. Users can switch between a normal operational mode with a 12ms nominal delay and a fast response mode offering delays under 1ms. These adjustable settings help optimize signal processing based on specific application demands and noise filtering needs.

What level of electrical isolation does the Allen-Bradley 1771-IQ provide?

The Allen-Bradley 1771-IQ provides comprehensive optical isolation rated at 1500VAC rms for enhanced noise immunity on the factory floor. This high isolation voltage protects sensitive backplane electronics from field-side voltage transients and electrical interference. It ensures reliable data transmission and longevity in demanding industrial automation environments.

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