Hello,
I have homework problem about Anti-plugging logic for motor control with PLC-5 and I draw or wrote ladder program in below, is it work?
Anti-plugging logic:
When the stop pushbutton is pressed, power is removed from the motor starter coils and an Anti-plugging light turns on for 20 seconds. As long as the anti-plugging light remains on, it shall be possible to restart the motor in the same direction, but not in the reverse direction.
Rung 00
...Stop.....FWD_PB1.....REV_Coil.......FWD_Coil
----| |------| |----------|/|------------( )-------
............|FWD_AUX|...................... |...LT1...|
........... |---| |---|...................... |---( )---|
Rung 01
...Stop.....REV_PB2.......FWD_Coil......REV_Coil
----| |------| |----------|/|------------( )-------
............|REV_AUX|...................... |...LT2...|
........... |---| |---|...................... |---( )---|
Rung 02
....Stop.....REV_AUX................Anti-Plugging Light
----| |------| |---------------------[ TON ]-------
............................................... |..T4:0....|--(EN)
............................................... |.PRE 20..|--(DN)
............................................... |---------|
Rung 03
...T4:0/DN...FWD_AUX..................FWD_Coil
----| |------|/|-----------------------( )----------
is it same motor control circuits like that in picture or ladder circuit... http://www.allaboutcircuits.com/vol_4/chpt_6/4.html?
thanks
I have homework problem about Anti-plugging logic for motor control with PLC-5 and I draw or wrote ladder program in below, is it work?
Anti-plugging logic:
When the stop pushbutton is pressed, power is removed from the motor starter coils and an Anti-plugging light turns on for 20 seconds. As long as the anti-plugging light remains on, it shall be possible to restart the motor in the same direction, but not in the reverse direction.
Rung 00
...Stop.....FWD_PB1.....REV_Coil.......FWD_Coil
----| |------| |----------|/|------------( )-------
............|FWD_AUX|...................... |...LT1...|
........... |---| |---|...................... |---( )---|
Rung 01
...Stop.....REV_PB2.......FWD_Coil......REV_Coil
----| |------| |----------|/|------------( )-------
............|REV_AUX|...................... |...LT2...|
........... |---| |---|...................... |---( )---|
Rung 02
....Stop.....REV_AUX................Anti-Plugging Light
----| |------| |---------------------[ TON ]-------
............................................... |..T4:0....|--(EN)
............................................... |.PRE 20..|--(DN)
............................................... |---------|
Rung 03
...T4:0/DN...FWD_AUX..................FWD_Coil
----| |------|/|-----------------------( )----------
is it same motor control circuits like that in picture or ladder circuit... http://www.allaboutcircuits.com/vol_4/chpt_6/4.html?
thanks