Section 2
DESCRIPTION
16
SUPERVISOR I SPECIAL FUNCTION INPUTS
PARAMETER OPERATION
REMOTE STOP/START (J1/1---2) 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.
PARAMETERS SELECT (J1/15---16) 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.
RS 232 SERIAL PORT (J4) F u ll 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.
SUPERVISOR I AUXILIARY DIGITAL INPUTS
PARAMETERS OPERATION
MOTOR/OVERLOAD (J1/7---8) 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.
COOLING SYSTEM MONITOR (J1/9---10) 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”
DRY---SIDE DISCHARGE TEMPERATURE Separate electronic switch monitors discharge
(J1/11---12) (T3) 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”.
INTERSTAGE TEMPERATURE (J1/13---14) (T4) Only used on tandem compressors. Parameters are
same as T3. Message display is “HIGH TEMP T4”.
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