The 1766-L32AWA by Allen-Bradley and Rockwell Automation is a MicroLogix 1400 Programmable Controller. This device has 20 digital and 4 analog inputs, as well as 12 digital and 2 analog outputs. General specifications for this controller include a relay output circuit type and a mechanical relay life of 20,000,000 cycles. This device has an open-style enclosure type rating (none). Input specifications include an on-state voltage range of 79…132 Volts AC and an off-state voltage range of 0…20 Volts AC. Operating frequency is 47…63 Hertz. Minimum on-state current is 9.0 milliAmps at 79 Volts AC while nominal on-state current is 12 milliAmps at 120 Volts AC; maximum on-state current is 16.0 milliAmps at 132 Volts AC. Additional input specifications include an off-state leakage current of 2.5 milliAmps (maximum) and an inrush current (maximum) at 120 Volts AC of 30 Amps.

Additional general specifications for the 1766-L32AWA include dimensions of 90 x 180 x 87 millimeters, or 3.5 x 7.08 x 3.43 inches. The approximate shipping weight for this hardware is 0.9 kilograms, or 2.0 pounds. Digital input circuit type is 120 Volts AC while analog input circuit type is 0…10 Volts DC. The maximum controlled load for relay and FET outputs is 1440 Volt-amperes. With respect to analog input specifications, this device has a 12-bit unsigned integer data type and a 12 bit input resolution; non-linearity is ± 0.5% of full scale. Overall accuracy is ± 1.0% of full scale and voltage input overvoltage protection is 10.5 Volts DC. Field wiring to logic isolation is non-isolated with internal logic.

The 1766-L32AWA comes with twelve (12) different relay outputs with discrete functionalities. It comes with one (1) built-in RTC feature. For optimal performance, this drive should be supplied with an input voltage that falls anywhere between the range of one hundred (100) to two hundred and forty (240) volts alternating current (AC). For communication, there are a total of three (3) different ports on this drive. There is one (1) RS-232, one (1) RS-485, and one (1) Ethernet port on this drive. It should be operated at a forty-seven (47) to sixty-three (63) hertz frequency. There is one (1) built-in LCD screen on the front panel.

One hundred (100) amperes is the power consumption rating on this drive. For communication, this module supports a number of communication protocols starting with the DNP3, ASCII, Ethernet I/P, DF1, DH485, Ethernet, MODBUS RTU protocols. The shipping weight of this module is approximately two (2) pounds. Additionally, the physical dimensions of this device measure out to 90 millimeters x 180 millimeters x 87 millimeters. It supports both panel mounting and DIN rail mounting. The 1766-L32AWA comes with twenty (20) kilobytes (kb) of memory pre-installed with it. There are a total of twelve (12) channels, and a total of twenty (20) output channels. Unfortunately, this drive doesn't support analog input. It should only be installed in a horizontal orientation. To protect this module from dust, vapor, water, and other corrosive elements, this drive comes with a debris strip. Users should take this strip off after the installation is complete.