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The 1791-32AO is a self-contained remote discrete input block module within the 1791 Block I/O series. This hardware includes 32 discrete input points rated at 120V AC (divided into 4 groups of 8 channels), one Remote I/O (RIO) communication interface, removable terminal strips, and LED status indicators.
The 64- and 128-point dc blocks can be vertically mounted in a panel
Small size allows blocks to be installed in a protected area of a machine or process
Self-contained package provides cost-effective distribution of as few as 16 discrete I/O points to a remote location
The 1791 Block I/O modules are fully compatible with PLC-2, PLC-3, and PLC-5 family programmable controllers, as well as the SLC family processors. However, when interfacing with PLC-3 programmable controllers, a 1775-S5 or -SR5 scanner module must be used; do not use 1775-SR, -S4A, or -S4B scanner modules.
When deploying within SLC family systems, a 1747-SN scanner module is required. For reference across the 1791 product family, some complementary AC output modules utilize zero-crossing technology to allow output turn-on when the voltage is below a specified level (typically 40-50V), which reduces stress on current-sensitive devices. When those output modules are paired with a load incorporating a single series diode, a shunt resistor should be placed across the load to ensure proper turn-on.
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 1791-32AO Analog 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.
Automotive Manufacturing
Used for monitoring the running status of long-distance conveyors in body shops or final assembly lines.
Iron and Steel / Metallurgy Industry
Used for remote monitoring of blast furnace material charging systems and high-heat environment conveying equipment.
Water and Wastewater Treatment
Employed for distributed remote data acquisition in pump stations, sedimentation tanks, and valve pits to handle humid and long-distance environments.
Thermal Power and Energy Industry
Utilized in remote control networks for coal handling systems, ash removal systems, and boiler auxiliary peripheral equipment.
Chemical and Petrochemical Industry
Deployed for remote high-voltage signal interlocking in non-core explosion-proof zones (such as finished product packaging and raw material tank farm utilities).
Pulp and Paper Industry
Implemented in long-distance material handling control across pulp preparation areas, large paper winders, and slitter peripherals.
This is a 120V AC digital input module. Connecting DC power or driving loads directly will damage the channels or cause safety hazards. As an integrated Block I/O, it does not support Hot-Swapping (RIUP). Complete system power shutdown is required before wiring or module replacement.
The 1791-32A0 functions as a data acquisition unit in distributed I/O systems, connecting to the upper control link via the RIO protocol, and is compatible with PLC-2, PLC-3, and PLC-5 series controllers, as well as SLC series processors.
The 1791-32A0 supports the RIO communication protocol.
Does the 1771-32A0 require an external power to operate?
Yes. It requires a nominal 120VAC external power supply with a current consumption of 150 mA.
Does the module come with discrete output channels?
No. The 1791-32A0 is a dedicated discrete input module and has no output channels.
Do you offer global delivery services?
Yes. We ship globally, and we are able to quickly deliver parts globally to any corner of the world. Unless otherwise specified, we will ship your order via (DHL). We can also ship through FedEx, UPS, and TNT. We can also use your account.
How many parts do you have in stock?
We have an extensive stock base consisting of ten thousands of new and discontinued automation parts including those from leading manufacturers such as:Control Systems (DCS, PLC, CNC) ,Panel Controllers,HMI and Display Panels,Drives,Encoders and Resolvers,Power Supplies.
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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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