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The 1756-OA16I by Allen Bradley stands as a digital AC output module. This component includes sixteen (16) fully isolated AC output loops per channel. It provides a 120 VAC / 240 VAC rated voltage supply within an operating window of 74 to 265 VAC at 47-63 Hz. The sustained output current for each point is specified at 2 A @ 30 °C (86 °F) linear derating and 1 A @ 60 °C (140 °F) linear derating.
2-wire or 3-wire input for Pt100/Pt1000 sensors
14 inputs for Pt100/Pt1000 sensors as well as type J or K thermocouples
The TI214 employs an innovative 3-wire measurement and evaluation algorithm
The 1756-OA16I features an open-style enclosure with a T4A temperature code designation, allowing it to be directly mounted into any standard 1756 chassis (including models such as the 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17). The module can be deployed in a local chassis alongside ControlLogix controllers, or extended to a remote I/O rack by utilizing a 1756 communication adapter.
To provide secure and stable wiring connections to the external electrical loads, the module must be paired with a Removable Terminal Block (RTB). Compatible terminal block models include the 1756-TBCH (cage-clamp terminal) or the 1756-TBS6H (spring-clamp terminal), and the RTB keying is user-defined. In terms of signal responsiveness, the module exhibits an output delay time of 9.3 ms at 60 Hz and 11 ms at 50 Hz for both Off-to-On and On-to-Off transitions, while maintaining an output signal schedule time of 16.7 ms.
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 1756-OA16I ControlLogix Discrete AC 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.
Water & Wastewater
Directly driving AC contactors in large pumping stations to control the start/stop of dosing pumps, mixers, and large motorized valves.
Metallurgy & Steel
Controlling AC solenoid valves on blast furnaces or hot rolling lines to regulate cooling water, pneumatic pushers, and heavy mechanical brakes in high-temperature environments.
Petrochemical
Driving electro-hydraulic actuators in chemical piping networks to achieve remote AC power control of process valves outside hazardous areas.
Power Generation
Operating AC relays in gas turbine or boiler control systems to interlock fuel shut-off valves, blowdown valves, and ignition systems.
Pulp & Paper
Controlling AC steam control valves in the continuous drying section of large paper machines to regulate steam flow across different temperature zones.
Oil & Gas
Directly operating AC solenoid valves in block valve stations of oil and gas pipelines to manage Emergency Shutdown (ESD) systems.
Since the module lacks internal fusing, users must install external fuses for each output point in the peripheral circuit to prevent short-circuit damage. For wiring, care must be taken as each channel is individually isolated, requiring proper separate routing for each point's L1 and L2 lines. Furthermore, strict adherence to the thermal derating curve is mandatory to ensure current does not exceed 1 A per point and 4 A aggregate at 60 °C, and RC snubbers must be installed across AC inductive loads (such as solenoid valves) to suppress back-EMF damage and mitigate the risk of false turn-on caused by the channel leakage current (3 mA).
The Allen-Bradley 1756-OA16I is a single-slot ControlLogix discrete AC output module featuring 16 fully individually isolated channels. It supports 74–265 VAC operation with a 120/240 VAC nominal output. The module delivers a continuous current per point of 2 A at 30 °C (5 A aggregate) which linear-derates to 1 A at 60 °C (4 A aggregate), while managing a 20 A inrush current for 43 ms. It provides 250 V continuous basic isolation between channels and to the backplane, supports per-point fault/program mode configuration, and draws just 1.59 W of backplane power.
It is a 16-channel discrete AC output module from the ControlLogix product family.
What is the nominal voltage output of the 1756-OA16I?
Its nominal voltage output is 120 / 240VAC with a frequency of 50/60 Hz.
How do you connect external load wiring to the 1756-OA16I?
It requires the use of a Removable Terminal Block (RTB) to provide wiring connections to the electrical loads.
What is the signal delay time of the 1756-OA16I at 60Hz?
The output signal delay time is 9.3 ms at 60Hz for both Off-to-On and On-to-Off transitions.
Which chassis models are compatible with the 1756-OA16I?
Compatible chassis are 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17.
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Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
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