Allen-Bradley SLC 500 16-Point Relay Output Module 1746-OW16 Series C
The Allen-Bradley 1746-OW16 is a 16-point relay output module designed for the SLC 500 series of programmable logic controllers (PLCs). This module provides versatile control capabilities, supporting both AC and DC loads, making it suitable for a wide range of industrial automation applications.
Key Features
- Output Configuration: 16 normally open (N.O.) relay contact outputs, organized into two groups of eight, each with a common terminal.
- Operating Voltage Range: Supports 5–265V AC and 5–125V DC, accommodating various control requirements.
- Current Ratings: Each output can handle up to 1.5A at 120V AC and 1.2A at 24V DC, with a continuous current capacity of 16A per module.
- Signal Delay: Maximum signal delay of 10 milliseconds for both ON and OFF states, ensuring prompt response times.
- Backplane Current Consumption: Draws 170 mA at 5V DC and 180 mA at 24V DC from the backplane.
- Thermal Dissipation: Maximum heat dissipation of 5.7 watts, contributing to efficient thermal management.
- Isolation Voltage: Provides 1500V AC isolation between the backplane and output terminals, enhancing system safety.
Installation and Usage
The 1746-OW16 module is designed for easy integration into SLC 500 systems, featuring a removable terminal block for straightforward wiring and maintenance. Its relay outputs eliminate the need for interposing relays when switching mixed voltages, simplifying system design and reducing component count. For optimal performance and longevity, it is recommended to use external surge suppression devices to protect the module from voltage transients.
Applications
This module is ideal for controlling various devices such as motors, solenoids, and lighting systems in industrial settings. Its ability to handle both AC and DC loads makes it a flexible solution for diverse automation tasks.
Technical Specifications
- Manufacturer: Rockwell Automation
- Brand: Allen-Bradley
- Part Number/Catalog No.: 1746-OW16
- Series: SLC 500
- Module Type: Digital Contact Output Module
- Outputs: 16
- Operating Voltage: 5–265V AC or 5–125V DC
- Number of Groups: 2
- Points per Group: 8
- Output Types: N.O. Relay Contact
- Current per Output (120V AC): 1.5A
- Current per Output (24V DC): 1.2A
- Step Response: 60 milliseconds in, 2.5 milliseconds out
- Backplane Current: 170–180 milliamps
- Signal Delay (Max Resistive Load): On = 10.0 ms, Off = 10.0 ms
The Allen-Bradley 1746-OW16 Series C module offers reliable and efficient control for industrial automation systems, providing the flexibility and performance required for complex control tasks.























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