Allen-Bradley 1746-OW16 SLC500 16-Point Digital Output Module: Functions & Applications
The 1746-OW16 is a 16-point relay-based digital output module designed for the Allen-Bradley SLC 500 PLC system, providing robust control for industrial automation processes.
Below is a detailed breakdown of its roles and capabilities:
1. Core Functionality
Relay-Driven Output Control
Features 16 independent relay output channels with hard-contact (physical break) design, ensuring high noise immunity and electrical isolation. Directly drives devices such as solenoids, motor starters, and indicator lights.
Supports mixed-voltage operation: Different channels can handle AC and DC loads simultaneously (e.g., AC for motors, DC for sensors), simplifying system design.
2. Technical Specifications
Electrical Performance
AC Load Compatibility: 5–265 VAC, up to 2.5 A continuous current (at 85–132 VAC).
DC Load Compatibility: 5–125 VDC, rated for 1.0–2.0 A continuous current (dependent on voltage).
High Surge Capacity: Handles 15 A inrush current at 120 VAC (instantaneous), suitable for inductive loads like relays and contactors.
Robust Design
Hot-Swappable: Modules can be replaced without shutting down the PLC system, minimizing downtime.
Industrial Durability: Built to withstand harsh conditions, including vibration, dust, and temperature extremes.
3. Integration & Configuration
PLC Compatibility:
Works with SLC 500 processors (e.g., SLC 5/03, 5/05) and chassis (e.g., 1746-A4). Supports communication via ControlNet, Ethernet, or DH+ protocols.
Programming:
Configured using RSLogix 500 software for ladder logic programming and real-time output monitoring.
Maintenance:
Utilizes removable terminal blocks for easy wiring replacement without disassembling the module.
4. Key Advantages
Versatility: Supports AC/DC mixed loads and high inrush currents.
Reliability: Industrial-grade construction ensures long-term stability in demanding environments.
Ease of Use: Hot-swappable design and modular architecture streamline troubleshooting and upgrades.
This module is widely used in manufacturing, process control, and material handling systems for its flexibility, durability, and seamless integration with SLC 500 PLC platforms.
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