hiii
i'm using Siemens S7-200 (PID Control Panel) to control speed of DC motor.
I have sensor which detects speed of motor [0V ; 2.84V] and that's Analog Input A (PV-Process Value). I use potentiometer to set value [5V ; 10V] and that's Analog Input B (SP-Setpoint). Analog Output is connected to the motor. I configure PID loop through PID wizard, but when i run PID Control Panel it seems like there is a problem with SP (Setpoint) because it doesn't change even if I change value on potentiometer. Is there something with SP that i'm forgeting, or the problem is somewhere else? Can someone who has done this before explaine me how to do it right?
Anyone?
thanks
i'm using Siemens S7-200 (PID Control Panel) to control speed of DC motor.
I have sensor which detects speed of motor [0V ; 2.84V] and that's Analog Input A (PV-Process Value). I use potentiometer to set value [5V ; 10V] and that's Analog Input B (SP-Setpoint). Analog Output is connected to the motor. I configure PID loop through PID wizard, but when i run PID Control Panel it seems like there is a problem with SP (Setpoint) because it doesn't change even if I change value on potentiometer. Is there something with SP that i'm forgeting, or the problem is somewhere else? Can someone who has done this before explaine me how to do it right?
Anyone?
thanks