Allen-Bradley 1746-OA16 | SLC 500 AC Output Module 16 Channel
Introduction:
Allen-Bradley 1746-OA16 SLC 500 AC Output Module. 16 outputs at 120/240VAC. Two groups of 8 channels with removable terminal blocks.
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Product Overview
The Allen-Bradley 1746-OA16 is a discrete AC output module for the SLC 500 system. This module provides sixteen AC output channels in two groups of eight. It delivers nominal output voltages of 120/240V AC. The Allen-Bradley 1746-OA16 operates with an output voltage range of 85 to 265V AC. Users trust this module for general purpose AC load control applications.
Technical Specifications
The 1746-OA16 delivers reliable AC output switching with optical isolation. Below are the complete technical details.
General Specifications
Manufacturer: Rockwell Automation for industrial control reliability.
Brand: Allen-Bradley for SLC 500 compatibility.
Part Number: 1746-OA16 for precise identification.
Series: SLC 500 programmable controller family.
Module Type: Digital AC Output Module.
UPC: 10662468067062 for universal product identification.
UNSPSC: 32151705 for classification.
Applications: General Purpose AC load control.
Compatibility: SLC 500, CompactLogix, ControlLogix PAC.
Output Channel Specifications
Number of Outputs: Sixteen (16) outputs.
Output Groups: Two (2) groups of eight (8) outputs each.
Output Voltage (Nominal): 120/240 VAC.
Operating Voltage Range: 85 to 264 VAC.
Frequency Range: 47 to 63 Hz.
Output Delay Time (OFF to ON): 11.0 ms.
Output Delay Time (ON to OFF): 1 ms.
OFF State Leakage Current: 2 mA.
Load Current Minimum: 10 mA.
On-State Voltage Drop: 1.50V @ 0.50 A.
Surge Current per Point: 10.0 A for 25 ms.
Current Ratings by Temperature
Continuous Current per Point @ 30°C: 0.50 A.
Continuous Current per Point @ 55°C: 0.25 A.
Continuous Current per Point @ 60°C: 0.25 A.
Continuous Current per Module @ 30°C: 8.0 A.
Continuous Current per Module @ 60°C: 4.0 A.
Backplane Power Specifications
Backplane Current at 5.1 Volts: 0.370 A (370 milliamps).
Current Draw: 0.316 A typical.
I/O Memory Usage: 16-bit.
Slot Occupancy: Single slot of controller chassis.
Physical and Installation Specifications
Removable Terminal Blocks: Eliminates wire disconnection for module replacement.
Filter Circuitry: Built-in for signal noise reduction.
Optical Coupling: Provides isolation and noise immunity.
LED Indicators: Show output status values for troubleshooting.
Installation Limit: No limit as long as power supply supports current requirements.
Environmental Specifications
Ambient Operating Temperature: 32 to 140 degrees Fahrenheit (0 to 60°C).
Relative Humidity: 5 to 95% non-condensing.
Step Response: 60 ms in, 2.5 ms out.
Installation Guide
Follow these steps to install the Allen-Bradley 1746-OA16 correctly.
Power Down the Chassis: Turn off all power to the SLC 500 rack.
Verify Power Supply Capacity: Ensure backplane can supply 0.370 A at 5.1V.
Locate an Available Slot: Find any empty I/O slot in the chassis.
Insert the Module: Slide the 1746-OA16 into the slot carefully.
Secure the Module: Lock using the retaining clips at top and bottom.
Wire Removable Terminal Block: Connect AC loads to the 16 output terminals.
Group Wiring: Note that outputs are in two groups of eight channels.
Connect AC Supply: Wire 85-264 VAC, 47-63 Hz to the common terminals.
Verify Load Current: Do not exceed 0.5A per point at 30°C or 0.25A at 60°C.
Check Total Module Current: Keep under 8.0A at 30°C or 4.0A at 60°C.
Apply Power: Turn on the backplane power to the chassis.
Check LED Indicators: Verify output status LEDs for each channel.
Test Outputs: Energize outputs and measure ON delay of 1 ms and OFF delay of 11 ms.
Monitor Leakage Current: Ensure OFF-state leakage stays below 2 mA.
Installation Notes
The module can be installed as local or remote I/O.
No installation limit exists if power supply capacity is sufficient.
Optical coupling and filter circuitry reduce signal noise.
Removable terminal blocks allow easy module replacement.
Access output values using ladder logic in SLC 500 processors.
Packaging List
This unit ships as a new and original product.
Allen-Bradley 1746-OA16 Discrete AC Output Module
Removable terminal blocks (pre-installed)
Product data sheet with wiring diagram
Anti-static factory packaging bag
Frequently Asked Questions (FAQ)
1. What is the output voltage range of the 1746-OA16?
The Allen-Bradley 1746-OA16 operates with an output voltage range of 85 to 265 VAC at 47-63 Hz. Nominal voltages are 120/240 VAC.
2. How many outputs does this AC module provide?
The 1746-OA16 provides sixteen outputs arranged in two groups of eight channels each. Each group shares common connections.
3. What is the current rating per output on the 1746-OA16?
Each output on the Allen-Bradley 1746-OA16 handles 0.5 A at 30°C and 0.25 A at 60°C. The total module current is 8.0 A at 30°C or 4.0 A at 60°C.
4. What are the output delay times for this module?
The 1746-OA16 has an OFF to ON delay of 11.0 ms and an ON to OFF delay of 1 ms. OFF-state leakage current is 2 mA maximum.
5. Does the 1746-OA16 work with ControlLogix or CompactLogix systems?
Yes, the Allen-Bradley 1746-OA16 works with SLC 500, CompactLogix, and ControlLogix controllers. It installs as local or remote I/O.