Theory Of Operation - Pressure Seal PS 100 Manual

Theory of Operation

When power is applied to the board:
The LED connector should have +24V across it
The +SI- (sensor infeed) and +SO- (sensor outfeed) will become active
The two green LED's will illuminate (indicating +24V and +5V respectively)
The counter will become active
If paper is placed over the infeed sensor:
The RUN switch will light, (The RUN LED connector will have +24V across it)
In operation:
When the lid is raised the machine will cancel all errors
An error will be generated if a form is not processed in time or gets jammed
in the machine
Any errors are indicated by the stop button flashing
If there is no paper in the machine:
No buttons are illuminated
If run is pressed and released the motor will start but only run for enough
time for a form to be ejected
If run is pressed and held down, the machine will run continually until the run
button is released
If stop is pressed there will be no operation
If paper is in the infeed tray:
The run button will be lit (indicating that the machine is ready to run)
If run is pressed the motor will start after a short delay (1-2 seconds) the
clutch will be energised
If the run switch has been released, when the first form is ejected from the
machine the motor will stop. This is the single form test run.
If the run switch is depressed when the first form is ejected then the machine will
process the rest of the forms in the infeed tray. The run switch can be released any
time after the first form has been ejected. The machine will cycle through a set
routine as follows:
1. Check if forms have run out – stop machine if so
2. Energise clutch and counter for the length of time set by the two DIL switches
3. Check to see if the form has been ejected – start cycle again
4. Check to see if the cover has been lifted – if so stop the machine
5. Check to see if the stop switch has been pressed – if so continue processing
current form then stop the machine
Page 18