Unitronics CP1 Manual page 2

Chapter 1 FEATURES
1) The compactor can be placed in manual allowing the operator to drive the ram forward and back. The ram
will remain where it is positioned for 5 minutes after which time it will return to automatic control and be
driven home. System high pressure will inhibit ram forward.
2) Limit and pressure switches have been eliminated. The display now shows the system pressure whenever
the ram is moving. Each time the ram is energized the display pressure is set to zero at the start of movement.
Each time the system reads a higher pressure the display is updated with that value. Thus, the display shows
the peak pressure during the previous move. The pressure display is updated in both Manual and Automatic.
3) Just like a car the oil should be periodically flushed and replaced. The factory recommendation is every
15000 machine cycles. From the Manual control screen, the client can view the total number of cycles since
the last service. The count can be reset from this screen. An excessive count will not stop the compactor from
operating. A lifetime cycle counter is also included.
4) An auto reset alarm "Check Photo Eye" has been added. If the compactor runs continually for more than
30 minutes it is possible the photo eye or reflector are dirty, or out of alignment. After an uninterrupted 30
minutes, the system will shut down for 10 minutes to allow the oil and solenoids to cool. After the cool
down, auto operation will continue. If the photo eye is still blocked the compactor will cycle 30 minutes on, 10
minutes off until the obstruction or alignment is corrected. After the first 30 minutes the display will read
"Check Photo Eye" and the alarm strobe will flash. The alarm display and strobe will continue until the photo
eye clears. The alarm will not clear during a cool down cycle. This operation can be changed from a setup
screen so that after the first 30 minutes the compactor shuts down completely and must be manually reset.
5) In previous versions of software, if there were multiple setpoints on a page, each setpoint had to be
accepted before the operator could move off that screen. A major change in software allows the operator to
quickly move through all the selectable valves until he finds the setpoint he wishes to change. To change a
value, move to the screen that presents that value. Hit the "ENTER" key. Type in the new value. Hit the
"ENTER" key a second time.
If the operator needs to change the same value a second time, simply touch the Enter key again to repeat the
procedure.
6) Model 20 provides consistency in how the operator moves from screen to screen. The Down Arrow key will
take the operator to the next display. The Up Arrow key will take him to the previous display.
7) The alarm display automatically scrolls to display all active alarms instead of just the last alarm. The display
also indicates whether the alarm is just a warning or whether it must be acknowledged before the machine
will resume operation. Several alarms that will shut down the controls have been modified to create an
automatic reset. The alarm description will read AUTO RESET.
8) In order to better attract the attention of an operator, a red strobe has been added to the front of the
control panel. This light will flash whenever any alarm occurs. The display will provide a text description of
the alarm.
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