Section 4
SUPERVISOR
13
4.8 SUPERVISOR I MICROCONTROLLER PRO-
GRAMMING
Several display and operational functions are user
programmable from the Supervisor keypad. Re-
peatedly pressing the “PROG” pad will scroll the
message display through the various program-
mable parameters. The cursor pad (Y)isusedto
change parameter values. A built---in timed delay
feature returns the message display to operation
mode after 5 seconds of inactivity.
PARAMETER (IN SEQUENTIAL ORDER) OPERATION
LANGUAGE Press the cursor pad for 2 seconds to change to next
language for the message display. Languages in or-
der are: French, German, Italian, Spanish and Eng-
lish.
AUTOMATIC/MANUAL The controller default state is AUTOMATIC operation.
If line pressure is adequate and/or the sump pressure
is greater than 5 to 10 psig (0.3 to 0.7 bar), pressing
the ON/OFF pad will put the control in STANDBY
mode until line pressure drops to the programmed
differential value and the sump pressure is low
enough to permit a START. AUTOMATIC mode pro-
vides a timed STOP with automatic restart operation.
Automatic restart after power failure is also included
in AUTOMATIC mode.
MANUAL mode ignores the line pressure permissive
of AUTOMATIC and starts the compressor with ON/
OFF as long as the minimum sump pressure and oth-
er fault conditions are satisfied. The compressor is
only stopped manually with no time stop and no auto-
matic restart after power failure.
PRESSURE UNITS Selects bar or psig; use cursor key to select. 1 bar =
14.5 psig.
TEMPERATURE UNITS _COR_F; use cursor key to select.
MAXIMUM PRESSURE P2A Use the cursor key to set the OFF LOAD pressure set-
ting. Depressing the cursor pad for more than 2 se-
conds will initiate a fast scrolling mode to quickly
reach the desired setpoint for all programmable set-
points. A wraparound feature (on all functions) re-
turns the value to its lowest limit if scrolling exceeds
the high limit. Typically set for 110 psig (7.6 bar).
PRESSURE DIFFERENTIAL P2A Selects the ON LOAD setting by subtracting the differ-
ential from P2A. Normally set for 10 psig (0.7 bar).
MAXIMUM PRESSURE P2B Same as P2A, but provides a second OFF LOAD set-
ting for base/load operation.
PRESSURE DIFFERENTIAL P2B Same as P2A, but provides a second ON LOAD set-
ting for base/load operation.
UNLOAD TIME Adjusts timed stop function if compressor is running
unloaded for 0 to 60 minutes.
WYE TO DELTA TIME Adjusts transition timer for Wye---Delta starters from 0
to 30 seconds. ON LOAD function is delayed by the
value of Wye to Delta time. A separate relay contact is
provided with this function. It is recommended that a
transition time of 8 seconds not be exceeded.
DRAIN TIME AND DRAIN INTERVAL A timed contact is furnished to control a condensate
(OPTIONAL) removal solenoid valve. Both drain dura-
tion time (1 to 10 seconds) and time internal between
drains (1 to 10 minutes) may be set from these
modes.
To Next Page
Loading...
