Operating The Compressor - Sullair LS-20S Operator's Manual And Parts List

Section 6
SUPERVISOR II
S Communications Baud Rate --- This
should always be selected to 9600 baud
for all sequencing modes. It may be lower
for slave or monitoring modes.
BAUDRATE
S Sequence method -- This parameter sets
the method used for sequencing. The
choices are
SLAVE, HOURS, COM ID#. See the Se-
quencing &
02250057--696) for details about these
modes.
SEQUENCE
S Drain interval -- The time between actua-
tion of the drain valve.
DRN INTV
S Drain time -- The amount of time that the
drain valve is actuated.
DRN TIM
S Last Communication Number -- Used
only for sequencing, see Sequencing &
Protocol Manual for details.
LAST COM
S Lowest Allowable Pressure -- Used only
for sequencing, see Sequencing & Protocol
Manual for details.
LOWEST
S Recovery Time -- Used only for sequenc-
ing, see Sequencing & Protocol Manual for
details.
RECOVER
SRotate Time -- Used only for sequencing,
see Sequencing & Protocol Manual for de-
tails.
ROTATE
30
9600
DISABLED, REMOTE,
Protocol Manual (P/N
HOURS
10 MIN
1 SEC
3
90 PSI
10 SEC
50
S Machine Capacity -- Used only for se-
quencing, see Sequencing & Protocol
Manual for details.
CAPACITY
100
S Sequence Hours -- Used only for se-
quencing, see Sequencing & Protocol
Manual for details.
SEQ HRS
1000

6.6 OPERATING THE COMPRESSOR

Before operating the compressor the operating pa-
rameters must be setup. See the previous section
on operating parameter setup.
MANUAL OPERATION MODE
In this mode the compressor will run indefinitely, as
long as temperatures and pressure remain within
the valid operating ranges, and the motor overload
or emergency stop contacts are not tripped. Press-
ing the "I"will turn on the compressor and put it in
manual mode. If the compressor is already running,
but in automatic mode, pressing "I" will switch op-
eration to manual. Pressing "I" while already running
in manual mode will cause the Supervisor to turn off
the common fault relay, if engaged, and clear any
maintenance indicators.
To stop the compressor, press "O". If the compres-
sor is already off when "O" is pressed, the common
fault relay will be turned off, if engaged, and it will try
to clear the alarm and maintenance indicators. Re-
gardless of what the compressor is doing, pressing
"O" puts the Supervisor in manual stop mode.
AUTOMATIC OPERATION MODE
In this mode the compressor will start if line pressure
(P2) is less than the LOAD parameter. It will stop if
the compressor runs unloaded for the number of
minutes indicated by the UNLD TIM parameter . To
put the compressor in automatic mode press "
P2 is already less than LOAD the compressor will
start immediately, otherwise the system status will
indicate STANDBY and the LED marked AUTO will
flash.
If the compressor is already running, but in continu-
ous mode, pressing "
tomatic. Pressing " " while already running in auto-
matic mode will cause the Supervisor to turn off the
common fault relay, if engaged, and clear any main-
tenance indicators.
In automatic mode the compressor can be stopped
manually by pressing O. Stopping the compressor
using O will put the Supervisor in manual stop mode.
Regardless of whether in "automatic" or "manual"
mode, control of the load solenoid will be based on
the parameters UNLD and LOAD. This operation is
as follows:
P2 > UNLD - -- -> load solenoid turned off
" will switch operation to au-
". If