Sullair LS-25S Operator's Manual And Parts List page 21

Section 2
DESCRIPTION
SUPERVISOR I SPECIAL FUNCTION INPUTS
PARAMETER
REMOTE STOP/START (J1/1---2)
PARAMETERS SELECT (J1/15---16)
RS 232 SERIAL PORT (J4)
SUPERVISOR I AUXILIARY DIGITAL INPUTS
PARAMETERS
MOTOR/OVERLOAD (J1/7---8)
COOLING SYSTEM MONITOR (J1/9---10)
DRY---SIDE DISCHARGE TEMPERATURE
(J1/11---12) (T3)
INTERSTAGE TEMPERATURE (J1/13---14) (T4)
16
OPERATION
Closing this contact initiates the STOP mode. Open-
ing this contact permits a compressor start if permis-
sives are satisfied. Please note that AUTOMATIC/MA-
NUAL mode characteristics are maintained even
though remote STOP/START is used. The RUN LED
will flash if stopped with remote contact.
With this contact open, compressor operates within
pressure range P2A. With this contact closed, com-
pressor operates within pressure range P2B. Suitable
for 2 compressor base/load sequencing.
Full 2---way communication and control that provides
analog display transmission, signal status and com-
pressor status indication, as well as remote STOP/
START via computer. A great tool for preventive main-
tenance programs and customer DCS management
packages. Baud rates are factory settable from 150 to
4800. Consult factory for communication protocol.
OPERATION
Monitors normally closed compressor motor over-
load contact. Will initiate compressor shutdown, flash
the motor LED on the graphic map and display the
message "MOTOR OVERLOAD" if the contact opens.
Monitors cooler fan overload (AC), water pressure
switch (WC), and/or canopy fan motor overload. Nor-
mally closed signal when opened will initiate com-
pressor shutdown and display the message "FAN OL/
LOW WATER"
Separate electronic switch monitors discharge
temperature on the dry side of the separator and will
initiate a shutdown if greater than 235_F (113_C).
Message display is "HIGH TEMP T3".
Only used on tandem compressors. Parameters are
same as T3. Message display is "HIGH TEMP T4".