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Section 5
OPERATION
common fault relay will be turned off, if engaged,
and it will try to clear the alarm and maintenance
indicators. Regardless of what the compressor is
doing, pressing "
manual stop mode.
AUTOMATIC OPERATION MODE
In this mode the compressor will start if line pres-
sure (P2) is less than the LOAD parameter. It will
stop if the compressor runs unloaded for the num-
ber of minutes indicated by the UNLD TIM parame-
ter . To put the compressor in automatic mode press
"
". If P2 is already less than LOAD the com-
pressor 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 "
automatic. Pressing "
in automatic mode will cause the Supervisor to turn
off the common fault relay, if engaged, and clear
any maintenance indicators.
In automatic mode the compressor can be stopped
manually by pressing "
pressor using "
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
P2 < LOAD —> load solenoid turned on
5.5 SUPERVISOR II OUTPUT RELAYS
RELAY
RUN RELAY (K1)
*-DELTA (K2)
UNLOAD/LOAD (K3)
COMMON FAULT (K4)
DRAIN VALVE (K5)
FULL LOAD/MODULATE (K6)
NOTE: All output relays will handle 8 amperes at 120/240 VAC.
32
" puts the Supervisor in
" will switch operation to
" while already running
". Stopping the com-
" will put the Supervisor in
POWER FAILURE RESTART
If the restart timer (RST TIME parameter) is dis-
abled the compressor will not try to start after a
power up. If this time is set to a value the machine
will go into standby after power up. When the line
pressure drops below the load setpoint, the restart
timer will start timing. When the timer expires the
machine will start.
SEQUENCING MODES
The following is a brief description of sequencing
modes, for details see the Supervisor Sequencing
& Protocol Manual (P/N 02250139-197).
• DISABLED -
parameter change messages via the RS485
network but will not respond to start, stop,
load or unload messages.
• REMOTE - Responds to status and param-
eter change messages but will not respond
to start, stop, load or unload messages. The
remote inputs and outputs are enabled
(start/stop, load/unload, master/local).
• SLAVE - Will respond to all messages, but
will not start or load unless commanded to
do so by a message. This mode is used to
control the machine from a master comput-
er.
• HOURS -
once a second, starts, loads and unloads
machines based on sequencing hours.
• COM ID # - Sends status message about
once a second, starts, loads and unloads
machines based on machine Com ID#.
OPERATION
Contact closure energizes the compressor starter.
A timed contact used to provide wye-delta transition time.
Controls ON LOAD/OFF LOAD operator of the load control
solenoid valve.
May be used to provide remote indication of any pre-alarm,
maintenance or fault shutdown condition.
Controls a solenoid valve to provide automatic condensate
removal.
Used with sequencing feature.
Responds to status and
Sends status message about
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