Allen-Bradley 1771-OZL
Allen-Bradley 1771-OZL
Allen-Bradley 1771-OZL
1 / 3

Allen-Bradley

Allen-Bradley 1771-OZL 1771 Digital I/O Relay Contact Output Module

SKU 1771-OZL

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Allen-Bradley
  • Product No.: 1771-OZL
  • Origin United States
  • Product Type: Digital Output Module
  • Barcode: 8537101190
  • Payment: T/T, Western Union
  • Weight: 1.1 kg
  • Dimensions: 130 mm x 130 mm x 85 mm (H x W x D)
  • Shipping port: Xiamen
  • Warranty: 12 months

Tags

Digital Output Modules

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Technical Datasheet

Allen-Bradley 1771-OZL 1771 Digital I/O Relay Contact Output Module

Download Open in new tab
Quantity
Call sales Contact

Product Description

Description

The Allen-Bradley 1771-OZL is an 8-channel digital relay contact output module designed to provide reliable switching control within the PLC-5 system architecture. It offers dry contacts that eliminate leakage current, preventing accidental energization of highly sensitive load devices. The 1771-OZL module functions as an effective interface between control logic and field devices, providing electrical isolation and robust signal switching for industrial automation processes.

Features

  • Zero Leakage Current: Dry contact outputs eliminate solid-state leakage currents, ensuring high-sensitivity load devices remain de-energized when contacts are open.
  • Individually Isolated Channels: Features 8 channels with independent contact isolation, allowing for diverse voltage reference routing.
  • Robust Diagnostic Indicators: Active LED indicators on the front panel provide real-time status display of each relay channel for simplified maintenance.
  • Secure Connection System: Compatible with standard Allen-Bradley I/O chassis swing arms to simplify wiring and field replacement.

Applications

  • High-sensitivity relay and coil control
  • Interlocking and safety signal isolation circuits
  • Solenoid and contactor pilot duty switching
  • DCS and PLC interface systems in process industries

Technical Specifications

Parameter Specification
Manufacturer Allen-Bradley / Rockwell Automation
Model 1771-OZL
Module Type Relay Contact Output Module
Number of Outputs 8 isolated outputs
Contact Type Form A (Normally Open)
Operating Voltage Range 120V AC or 24V DC nominal
Backplane Current Load 1.0 A at 5V DC
Power Dissipation 5.5 Watts (typical)
Isolation Voltage 1500V AC RMS channel-to-backplane
Country of Origin Mexico

Connections/Interfaces

Connector Pin Function
Terminal 1 Output 00 (A)
Terminal 2 Output 00 (B)
Terminal 3 Output 01 (A)
Terminal 4 Output 01 (B)
Terminal 5 Output 02 (A)
Terminal 6 Output 02 (B)
Terminal 7 Output 03 (A)
Terminal 8 Output 03 (B)
Terminal 9 Output 04 (A)
Terminal 10 Output 04 (B)
Terminal 11 Output 05 (A)
Terminal 12 Output 05 (B)
Terminal 13 Output 06 (A)
Terminal 14 Output 06 (B)
Terminal 15 Output 07 (A)
Terminal 16 Output 07 (B)

Installation Guidelines

  • Chassis Insertion: Power down the I/O chassis before inserting or removing the module. Align the module with the card guides and slide firmly into the backplane connector.
  • Wiring Arm: Use the designated 1771 wiring arm to land field wiring safely without disconnecting individual conductors from the terminal strip during module replacement.
  • Routing: Maintain physical separation between low-voltage signal lines and high-voltage AC/DC power cables to mitigate electromagnetic interference.
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 is the key benefit of dry contacts on this module?
The dry contacts on the module prevent any leakage current from flowing when the outputs are open, eliminating the risk of falsely energizing highly sensitive load devices.
Does the device require external power for its backplane logic?
No, the logic power is drawn directly from the 1771 I/O chassis backplane, requiring 1.0 A at 5V DC.
How many outputs does the module support?
The module supports 8 isolated relay contact outputs.
Reviews

More from this brand

Allen-Bradley 1746-BAS SLC 500 BASIC Module
1746-BASAllen-Bradley 1746-BAS SLC 500 BASIC Module
Allen-Bradley 1771-IA PLC-5 Discrete Input Module
1771-IAAllen-Bradley 1771-IA PLC-5 Discrete Input Module
Allen-Bradley 1794-OB16P FLEX I/O Digital DC Output Module
1794-OB16PAllen-Bradley 1794-OB16P FLEX I/O Digital DC Output Module
Allen-Bradley 1756-CNB ControlLogix ControlNet Bridge Communication Module
1756-CNBAllen-Bradley 1756-CNB ControlLogix ControlNet Bridge Communication Module

1771-OZL

Stock & lead time on request

Call
  • Allen-Bradley 1771-OZL
  • Allen-Bradley 1771-OZL
  • Allen-Bradley 1771-OZL
1 3

Allen-Bradley 1771-OZL 1771 Digital I/O Relay Contact Output Module

Only 7 item(s) left in stock

  • Manufacturer: Allen-Bradley

  • Product No.: 1771-OZL

  • Country of origin:United States

  • Product Type: Digital Output Module

  • Barcode: 8537101190

  • Payment: T/T, Western Union

  • Weight: 1100g

  • Dimensions: 130 mm x 130 mm x 85 mm (H x W x D)

  • Shipping port: Xiamen

  • Warranty: 12 months

View full details
Product Description
FAQ
Shipping Returns
Additional details
Reviews

Description

The Allen-Bradley 1771-OZL is an 8-channel digital relay contact output module designed to provide reliable switching control within the PLC-5 system architecture. It offers dry contacts that eliminate leakage current, preventing accidental energization of highly sensitive load devices. The 1771-OZL module functions as an effective interface between control logic and field devices, providing electrical isolation and robust signal switching for industrial automation processes.

Features

  • Zero Leakage Current: Dry contact outputs eliminate solid-state leakage currents, ensuring high-sensitivity load devices remain de-energized when contacts are open.
  • Individually Isolated Channels: Features 8 channels with independent contact isolation, allowing for diverse voltage reference routing.
  • Robust Diagnostic Indicators: Active LED indicators on the front panel provide real-time status display of each relay channel for simplified maintenance.
  • Secure Connection System: Compatible with standard Allen-Bradley I/O chassis swing arms to simplify wiring and field replacement.

Applications

  • High-sensitivity relay and coil control
  • Interlocking and safety signal isolation circuits
  • Solenoid and contactor pilot duty switching
  • DCS and PLC interface systems in process industries

Technical Specifications

Parameter Specification
Manufacturer Allen-Bradley / Rockwell Automation
Model 1771-OZL
Module Type Relay Contact Output Module
Number of Outputs 8 isolated outputs
Contact Type Form A (Normally Open)
Operating Voltage Range 120V AC or 24V DC nominal
Backplane Current Load 1.0 A at 5V DC
Power Dissipation 5.5 Watts (typical)
Isolation Voltage 1500V AC RMS channel-to-backplane
Country of Origin Mexico

Connections/Interfaces

Connector Pin Function
Terminal 1 Output 00 (A)
Terminal 2 Output 00 (B)
Terminal 3 Output 01 (A)
Terminal 4 Output 01 (B)
Terminal 5 Output 02 (A)
Terminal 6 Output 02 (B)
Terminal 7 Output 03 (A)
Terminal 8 Output 03 (B)
Terminal 9 Output 04 (A)
Terminal 10 Output 04 (B)
Terminal 11 Output 05 (A)
Terminal 12 Output 05 (B)
Terminal 13 Output 06 (A)
Terminal 14 Output 06 (B)
Terminal 15 Output 07 (A)
Terminal 16 Output 07 (B)

Installation Guidelines

  • Chassis Insertion: Power down the I/O chassis before inserting or removing the module. Align the module with the card guides and slide firmly into the backplane connector.
  • Wiring Arm: Use the designated 1771 wiring arm to land field wiring safely without disconnecting individual conductors from the terminal strip during module replacement.
  • Routing: Maintain physical separation between low-voltage signal lines and high-voltage AC/DC power cables to mitigate electromagnetic interference.

RECOMMENDED RELATED MODELS

Product Image Model Number / Title Condition Availability Action
1756-OB8 Allen-Bradley 1756-OB8 ControlLogix DC Digital Output Module Original New In Stock View Details
1794-OB16P Allen-Bradley 1794-OB16P FLEX I/O Digital DC Output Module Original New In Stock View Details
1762-OB8 Allen-Bradley 1762-OB8 MicroLogix 1200 Solid-State Digital DC Output Module Original New In Stock View Details
Key Features:
#Digital Output Modules

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Technical Datasheet

Allen-Bradley 1771-OZL 1771 Digital I/O Relay Contact Output Module

Download Open in new tab

What is the key benefit of dry contacts on this module?
The dry contacts on the module prevent any leakage current from flowing when the outputs are open, eliminating the risk of falsely energizing highly sensitive load devices.

Does the device require external power for its backplane logic?
No, the logic power is drawn directly from the 1771 I/O chassis backplane, requiring 1.0 A at 5V DC.

How many outputs does the module support?
The module supports 8 isolated relay contact outputs.

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, including rapid delivery to Saudi Arabia and UAE.

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 professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Color pattern
Black
Country of origin
United States
Power source
AC-powered DC Power

Technical knowledge

Industrial joystick form factors for machine operator controls

Engineering Industrial Joystick Controls for Safe Motion

An industrial joystick is only the first element in a safe motion command chain. This guide covers sensing choices, wiring, signal validation, PLC logic, restart behavior, and commissioning for...

Live PID trend comparing command, feedback, and controller output

Seeing PID Behavior Before Tuning the Loop

PID tuning becomes safer when engineers can see how proportional, integral, and derivative actions reshape error, output, and response over time. This guide turns live trends into a disciplined...

Compact motion drive used to commission a linear axis

Commissioning a Linear Axis Without Hiding Mechanical Faults

A linear axis should be proven mechanically before aggressive tuning begins. This commissioning workflow covers scaling, direction, limits, homing, STO, low-speed tests, and evidence-based tuning for...

Interposing relay used between industrial control and field circuits

Interposing Relays: Isolation, Load Matching, and Diagnostics

Interposing relays protect PLC and DCS interfaces by separating voltage domains, matching output capacity to field loads, and making faults easier to isolate. This guide explains selection,...

PLC analog and digital signal filtering for stable input data

Filtering Noisy PLC Signals Without Hiding Real Faults

Input filtering can stabilize PLC data, but excessive smoothing delays alarms and masks process changes. Learn how to diagnose noise, select hardware or software filters, and validate response time.

Enclosed PWM controller for an industrial brushed DC motor

SCR or PWM? Choosing a Drive for Brushed DC Motors

SCR and PWM drives regulate brushed DC motors differently. Compare current ripple, low-speed torque, field control, feedback, reversing, braking energy, electromagnetic effects, and retrofit risks...