Drum Screen Control Panel Operation Summary

 

Drum Screen Control Panel Operation Summary :

1)      Panel door Switches : As mounted.

2)      Functional elements: All required MCB, Single Phase Preventer, Indicating lamps, PLC for variable data modification.

3)      Screen Operation :

1)      Manual Mode : After selecting the manual mode on selector switch , press the start/stop button (Green color) which will rotate the screen in Forward direction .Secondly after stopping the motor in forward direction, user can reverse the motor if required by pressing the Green Push Button(Reverse) , which will rotate the screen in reverse direction for 15-20 seconds which is settable on HMI.

**Note: If required the motor in the reverse direction is too stopped with the same start/stop button described above.

2)      Auto mode : The screen starts to rotate after confirming all safety devices like micro switch, emergency ,Overload relays, Supply Voltages, level sensor etc .It rotates till the water level decreases and the delay time is reached which has set on HMI for Auto mode.

3)      Also by some reason if the Water level sensor is not reached its upper level ,still the screen rotates after certain time interval  for the prescribed time set by the user on HMI.

4)      In Auto mode the screen will not reverse in any condition.

4)      Washing Operation:

1)      Manual mode : The washing motor with solenoid valve will start when the screen in manual mode is operated and stops as screen stops . The separate start stop button is given on panel to check the healthy condition of the washing motor. Same when screen rotates in reverse direction.

2)      Auto Mode : As soon as the Screen starts the washing motor starts and stops when screen stops .

3)      Note that washing motor is in synchronizing with the screen motor and works when screen works and stops when screen stops.

All the settable timing is to be set by the user as per the site conditions, operation manuals and safety norms for healthy operation.