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PRINCIPLES OF WORK
5.3
PLC
Picture 5.3-1 PLC MITSUBISHI General view
A programmable logic controller (PLC)
or programmable controller is a digital computer used
for automation of electromechanical processes.
At machine power ON, on PLC IN (Input)section following light-emitting diodes should be
ON: 5, 7, 11, 15, 16. If any of these light-emitting diodes are not ON, the machine will not
function.
PLC SIGNALS DEFINITIONS
INPUT (Input signals)
-
Input X0
ON when phase A has signal
-
Input X1
ON when phase B has signal
-
Input X2
ON when phase C has signal
-
Input X4
ON when cutting “Start” button pushed
-
Input X5
OFF when Head № 1 motor’s “Stop” button pushed
-
Input X6
ON when Head № 1 motor’s “Start” button pushed
-
Input X7
OFF when Head № 2 motor’s “Stop” button pushed
-
Input X10
ON when Head № 2 motor’s “Start” button pushed
-
Input X11
OFF when “Pull out” button pushed
-
Input X12
ON when “Clamp” button is pushed
-
Input X13
ON when head selection 1 / 2 head occurs
-
Input X14
OFF when head fixation occurs
-
Input X15
OFF when “Emegency stop”button ON
-
Input X16
ON when Head № 1 cylinder’s sensor has signal
