9
the main display, push the Logo key followed by the Display key. The top line of
the display should show the numbers 1 through the number of machines in the system (set
by parameter LAST COM). The second line shows the status of each machine. If the status
letter is lower case then the machine has a fault or warning. The status letters are:
E - E-Stop U - Unloaded
M - Manual stop B - Standby
L - Loaded F - Full Load
T - Trim (loaded and modulating) S - Starting
R - Remote or sequence stop
If the Up arrow key is pushed the system line pressure is displayed. If the Up arrow
key is pushed again the line pressure and run hours of the first machine is displayed, if the
arrow key is pushed again the second machine is displayed and so on. The Lamp Test
key changes to the previous display.
2.10 REMOVING A MACHINE FROM SEQUENCE FOR MAINTENANCE
To temporarily disable a machine from sequencing for maintenance, simply press the STOP
pad and/or E-Stop Button, remove power to that machine and apply the appropriate
Lockout/Tagout procedure. The rest of the networked machines will continue to sequence
properly. When restoring the machine to the network, simply restore power, pull out the E-
Stop, press STOP then AUTO for Supervisor II Deluxe. If the sequencing param-
eters have not been changed, the machine will sequence in at the appropriate time. By
revising that machine's SEQUENCE HOURS before enabling sequencing, one may force it
to move up or down in the start priority in the HOURS sequencing mode.
To permanently remove a machine from sequence, reprogram the other compressors as
though the downed machine/s is/are not there. (Relocate the COM NUMBERS as needed
and change the LAST COM value per the number of machines removed.) Remember that
any program changes must be done while the machine is manually stopped.
2.11 CALIBRATION OF P2 PRESSURE TRANSDUCERS - SUPERVISOR
Because each machine has it's own pressure transducer it is possible that after a long peri-
od of time these can read differently. If this happens the Supervisors should be re-calibrat-
ed. This re-calibration is best done when the system is at a stable pressure. Measure the
pressure using an independent gauge then change the calibration parameter for P2 so that
the Supervisor reads the same as the gauge. Changing of the calibration parameters is
Section 2
SEQUENCING WITH MULTIPLE SUPERVISOR CONTROLS
DO NOT enable this mode when the above situation is NOT true, because unexpected starts
and stops may occur when manually starting or stopping a machine in the sequence for main-
tenance.
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