1771-OZL Allen-Bradley PLC-5 Digital Dry-Reed Relay Contact Output Module

Product parameters

Basic overview:

Manufacturer: Allen-Bradley/Rockwell Automation

Product series: PLC-5

Module type: Contact Output Module

Product Number: 1771-OZL

Output: 8 Normally Open (Normally open, N.O.) relay output

National Inventory Number (NSN) : 7025-01-394-4585

Electrical parameters:

Working voltage range:

0-24V DC

Maximum 30 VA @ 138V AC (alternating current)

Maximum 20 VA @ 125V DC (direct current)

Maximum continuous current: 0.1A per point (maximum 0.8A per module)

Backplane current: 420 mA @ 5V DC

Signal delay

AC: 45 ms ± 15 ms (off state)

DC: 50 ms (off state)

Relay type: Mercury-wetted relay. It needs to be handled with care to avoid Mercury leakage

Shell type: Open type

Installation method: Install on 1771 I/O racks (A1B, A2B, A3B, A4B racks)

Wiring:

Use the 1771-WD Wiring Arm (Field Wiring Arm provided with the module)

Optional 1771-WHF wiring arm (with separate fuse)

Recommended wire: Maximum 14 AWG twisted wire, insulation thickness 3/64 inches

Operating temperature: 0°C to 60°C (32°F to 140°F)

Storage temperature: -40°C to 85°C (-40°F to 185°F)

Relative humidity: 5-95% (non-condensing)

Certification:

UL, c-UL-us (Class I, Division 2 Hazardous environment), CE, C-Tick

Mercury-containing components need to comply with environmental protection regulations such as California Proposition 65

Others:

Power supply distance grade: Not applicable (The PLC-5 module is powered through the backplane and there is no specific distance limit)

Function

Relay output

It provides 8 normally open relay outputs, suitable for low current (0.1A/point) loads, and supports a voltage range of 0-24V DC or up to 138V AC/125V DC.

Mercury-containing relay design provides highly reliable contact, but it needs to be handled with care to prevent mercury leakage.

Isolation and Compatibility

The output point is isolated from the backplane logic circuit to enhance the anti-interference ability.

Compatible with the PLC-5 series I/O racks (1771-A1B to A4B), communicating with the PLC-5 controller through the backplane.

Wiring and installation

It uses the 1771-WD wiring arm with a pivot design, supporting module insertion/removal without disconnecting the wiring.

The optional 1771-WHF wiring arm provides a separate fuse for each output to enhance circuit protection.

Diagnostic function:

The front panel of the module is equipped with status indicator lights, which display the output and the operating status of the module, facilitating on-site monitoring.

It supports the detection of relay status through PLC programs and is suitable for fault diagnosis.

Low power consumption design

The backplane current requirement is relatively low (420 mA), making it suitable for multi-module I/O rack configurations.

Application scenarios

Industrial Automation

Low-power equipment control: It is used to control low-current loads such as signal lights, small relays or control circuits, and is suitable for lightweight automation equipment (such as test benches, signal interfaces).

Hybrid voltage application: Supports AC (up to 138V) and DC (up to 125V) loads, suitable for scenarios requiring flexible voltage control, such as laboratory equipment or small production lines.

Traditional system maintenance

It is used for maintaining or upgrading old systems based on PLC-5 and extending the lifespan of existing equipment. It is commonly found in petrochemical, power or manufacturing industries.

Cooperate with other PLC-5 modules (such as the 1771-IAD input module) to construct a complete control system.

Distributed control: In a distributed I/O system, communication with the PLC-5 controller is conducted through the Remote I/O or ControlNet network, which is suitable for decentralized control in large factories.

Special environment: Mercury-containing relays are suitable for high-reliability, low-current switching applications, but they must comply with environmental protection regulations and are suitable for specific industrial scenarios (such as signal isolation).

Advantage Products:

All items are Distributor Ready-stock Genuine Brand-new Supplying, please inform us if the other conditions are needed, Used, Open-box, Refurbished, etc.

Many Available just wait for you, feel free to ask to get better deal!!!

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