1772-LN3

The Allen-Bradley 1772-LN3 PLC-2 Mini Processor Module is a memory and control processing unit that is specially made for the Allen-Bradley Mini-PLC-2 controllers. It has 1K words of memory. It weighs 3 pounds. This mini processor module is located in the leftmost slot in an Allen-Bradley 1771 I/O chassis. It has 3 diagnostic indicators that are the "PROCESSOR," the "MEMORY," and the "RUN" indicators. The mode select switch has the "RUN," "TEST," and "PROG" operating modes. The relative humidity range is 5% to 95% without condensation and the operating temperature range of the module is from 0 to 60 degrees Celsius. The 1772-LN3 PLC-2 Mini Processor Module has the capability to monitor and control up to 128 I/O devices.

The 1772-LN3 PLC-2 Mini Processor Module has a read/write CMOS memory that can store program instructions and numerical values. This processor continuously monitors the status of input devices during program operation. It can perform additional operations such as block transfer, I/O forcing, and RS-232-C interfacing. This module is compatible with the industrial terminals and data highway interfacing. The “PROG” switch position places the processor in the program mode and the “TEST” switch position places the processor in the test mode. The “RUN” mode will execute the user program and the outputs that are controlled by the program. The system power supply has 2 diagnostics indicators on the front panel which are the "BATTERY LOW" and "DC ON" indicators. These visual indicators illuminate to show that a controller malfunction is detected. The Mini-PLC-2 controller that comes with the 1772-LN3 module can be used in many types of industrial applications such as process control, material handling, and palletizing applications.