S
sir
i m using rockwell RSlogix 1400 with analog module. i already get analog output from analog input in this plc. how do i use this analog output and trigger a TRIAC or thyristor by this analog output?
one of my sir reply me that.
You will need to use a discrete (on/off) output to trigger the SCR. In your PLC program, set a timer that resets itself when its preset is reached. Calculate the analog output's percentage of its maximum value. Also calculate the timer accumulator's percentage of its maximum value. While the timer's percentage of its maximum value is less than the analog output's percentage of its maximum value, turn on the discrete output that triggers the SCR. When the timer's percentage of its maximum value is greater than the analog output's percentage of its maximum value, turn off the discrete output that triggers the SCR.
so please tell me that how can i make this ladder diagram of this?
i m using rockwell RSlogix 1400 with analog module. i already get analog output from analog input in this plc. how do i use this analog output and trigger a TRIAC or thyristor by this analog output?
one of my sir reply me that.
You will need to use a discrete (on/off) output to trigger the SCR. In your PLC program, set a timer that resets itself when its preset is reached. Calculate the analog output's percentage of its maximum value. Also calculate the timer accumulator's percentage of its maximum value. While the timer's percentage of its maximum value is less than the analog output's percentage of its maximum value, turn on the discrete output that triggers the SCR. When the timer's percentage of its maximum value is greater than the analog output's percentage of its maximum value, turn off the discrete output that triggers the SCR.
so please tell me that how can i make this ladder diagram of this?