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The 1746-OAP12 is a 12-point high-density digital AC output module designed for use with SLC 500 controllers. It provides 12 outputs, with 2 outputs per common, and is categorized as a 120/240V AC output module that fits into any available slot in a 1746 I/O chassis except slot 0.
Six Isolated Commons
10A Surge Capability
High-Density 12-Point Design
This module is an AC output module that operates within a voltage range of 85V to 265V AC and features six isolated commons to prevent interference between circuits. It supports a maximum surge current of 10.0A for 25 ms per point and utilizes optical isolation to protect the system backplane from field-side electrical noise.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Allen-Bradley 1746-OAP12 OUTPUT MODULE Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Power Generation
Controls high-voltage AC solenoid valves and motor starters for power plant auxiliary systems. It provides isolated common terminals to ensure reliable operation of safety-critical interlocking circuits.
Oil and Gas
Manages heavy-duty AC actuators and heating elements in refinery and pipeline monitoring systems. The module is designed to switch high-inrush alternating current loads in harsh industrial environments.
Automotive Assembly
Drives industrial lighting, conveyors, and pneumatic AC valves on high-speed vehicle production lines. It utilizes high surge current capacity to handle frequent cycling of inductive and resistive loads.
Water Treatment
Operates localized AC pump controllers and chemical injection valves across municipal water facilities. The multiple isolated commons allow for different AC voltage sources to be managed within a single chassis.
Metal Processing
Regulates heavy machinery and furnace control systems in steel mills and foundry operations. It provides robust optical isolation to protect the controller backplane from extreme electrical noise on the factory floor.
Food Packaging
Coordinates AC-powered sorting arms, labeling machines, and high-speed sealing equipment. This ensures precise timing for repetitive output tasks while maintaining high-density I/O configurations in compact spaces.
The 1746-OAP12 requires a backplane current draw of 370 mA at 5V DC and 0 mA at 24V DC, and because the module does not contain internal fusing, users must provide external fuses for each output circuit to protect against short circuits and overloads.
During installation or wiring, personnel must wear a grounding wrist strap to prevent electrostatic discharge (ESD) from damaging internal components and must ensure all chassis power is removed before inserting or removing the module to avoid injury or equipment damage. The continuous current per point is 0.5A at 30°C and derates linearly to 0.25A at 60°C, while the total module current is limited to 6.0A at 30°C and 3.0A at 60°C across its six isolated commons.
For proper operation, a minimum load current of 10.0 mA is required, and users must account for a maximum off-state leakage current of 2 mA at 120V AC or 4 mA at 240V AC when interfacing with high-impedance loads.
What is the operating voltage range for the 1746-OAP12 output module?
The 1746-OAP12 operates within an AC line voltage range of 85V to 265V AC, with a frequency range typically between 47 to 63 Hz.
What is the maximum continuous current per point for the 1746-OAP12 module?
The maximum continuous current per point is 0.5A at 30°C, and it derates linearly to 0.25A per point as the temperature increases to 60°C.
Does the 1746-OAP12 module include any built-in circuit protection?
No, the 1746-OAP12 module does not contain internal fusing; therefore, you must provide external fuses to protect the module from short circuits and overloads.
What are the backplane current requirements for the 1746-OAP12 at 5V and 24V DC?
The module has a backplane current draw of 370 mA at 5V DC and 0 mA at 24V DC, according to the official specifications.
What is the maximum surge current that the 1746-OAP12 can handle per point?
The maximum surge current per point is 10.0A for 25 ms, which is repeatable every 2 seconds to allow for high inrush current loads.
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