1791-32AO Discrete Input module

Part Number: 1791-32AO
Weight: 2.00 lbs (0.91 kg)
Series: 1791 Block I/O modules
Module Type: Discrete Input Module
No. of Inputs: Thirty-Two (32) Inputs
No. of Groups: Four (4) Input Groups
No. of Channels per Group: Eight (8)
Nominal Input Current: 11 mA
Input Voltage: 120 VAC
ON State Voltage Range: 79–132 VAC, 47–63 Hz
Supported Communication Protocol: Remote I/O (RIO)
External Supply Voltage: 85–132 VAC, 47–63 Hz
External Supply Current: 150 mA
Power Dissipation: 13.62 Watts
Thermal Dissipation: 46.44 BTU/hr
Voltage: 120 V AC
Inputs per Block: 32
Input On-State Voltage Range: 79–132 V AC
Input On-State Current: 12.3 mA @ 132 V max.
Input Off-State Voltage: 35 V max.
Input Off-State Current: 2.3 mA min.

The 1791-32AO is a block I/O module. Block I/O modules are stand-alone I/O stations that is equipped with fixed I/O channels and a communication interface that support Remote I/O (RIO) communication. The 1791-32AO in particular is a Thirty-Two (32) channel block I/O module with each channel operating at a nominal input voltage of 120VAC and operating voltage range of 79-132VAC along a frequency of 47-63Hz.
The input channels of the 1791-32AO are grouped into Four (4) groups with each group having Eight (8) channels each. Each input channel has a maximum Off-state voltage of 35V, minimum On-state current of 5 mA at 79V, 60 Hz and maximum On-state current of 12.3 mA @ 132VAC, 60 Hz. Each channels has switching delays of 1.0 ms for Off to On transition and maximum of 26 ms for On to Off transition.
The 1791-32AO comes with a single Remote I/O (RIO) communication port with isolation rating of 1250 VAC for I/O group to group isolation and 1250 VAC I/O group to logic isolation. Additionally, the Power supply to RIO port isolation is 500 VAC.

Frequently asked questions：

Q1: What is the 1791-32AO?
A: The 1791-32AO is an power supply module designed to provide reliable external power for Compact I/O and other modules.
Q2: What is the 1791-32AO input voltage range?
A: The module operates with an external supply voltage of 85–132 VAC at 47–63 Hz, making it suitable for standard industrial AC power systems.
Q3: What is the 1791-32AO input current requirement?
A: The external supply current is 150 mA, ensuring efficient power delivery without overloading the supply.
Q4: What is the power dissipation of the module?
A: The 1791-32AO has a power dissipation of 13.62 Watts, allowing for proper thermal management in control panels.

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