Description

The Allen-Bradley 1771-OZL is a high-performance digital output module designed for the PLC-5 programmable controller system. This module features 8 reed relay contact outputs, providing reliable switching for low-voltage control applications. It is engineered for integration into 1771 I/O chassis, offering a robust solution for industrial automation tasks requiring isolated contact switching.

Features

• 8 Form A (Normally Open) reed relay outputs.
• Configured in 4 groups of 2 outputs each.
• Supports a voltage range of 0–24 V AC RMS or 0–24 V DC.
• Fast switching performance with 1 ms maximum operate/release and bounce times.
• High isolation voltage: 1000 V between open contacts and 1500 V between coil and contact.
• Compact design for standard 1771 I/O chassis mounting.

Technical Specifications

Installation Guidelines

• Ensure the PLC-5 chassis power is disconnected before installing or removing the 1771-OZL module to prevent electrical damage.
• Verify the module is fully seated in the 1771 I/O chassis slot and secured with the locking tabs.
• Use appropriate shielded cabling for field wiring to minimize electromagnetic interference (EMI).
• Ensure field wiring is routed away from high-voltage AC lines and high-current power cables.
• Observe the 100 mA per output current limit to prevent relay contact degradation.
• Maintain adequate ventilation within the enclosure to ensure the module operates within its specified temperature range.

FAQ

What type of relay does the 1771-OZL use?

The 1771-OZL utilizes reed relays, which are ideal for low-current, high-speed switching applications where mechanical durability and fast response times are required.

Can this module be used for AC and DC loads?

Yes, the 1771-OZL is rated for both 0–24 V AC RMS and 0–24 V DC, making it versatile for various low-voltage signal control requirements.