Section 5
OPERATION
34
BLOWDOWN SOLENOID VALVE
BLOWDOWN VALVE
EMERGENCY STOP SWITCH
Opens when a demand for an unload/shutdown condition
exists. When valve is opened, it will supply air to the blow-
down valve.
Vents sump pressure to the atmosphere during unload/shut-
down conditions.
Pushing in this switch, found adjacent to the Supervisor, cuts
all AC outputs from the latter and de-energizes the starter. A
fault message (E STOP) is displayed by the Supervisor until
the button is pulled out and the “ ” pad is depressed.
5.2 PURPOSE OF CONTROLS (CONTINUED)
CONTROL OR INDICATION PURPOSE
5.3 PARAMETER SETUP
Pressing the program key “ ” enters parameter
display and edit mode. To move to the next param-
eter press the program key. To increment a param-
eter press the up arrow key “ ” or logo key
“ ”. The logo key will increment by 10. To
decrement the value press the down arrow key
“”.
The parameters are displayed in the following
order:
• Unload pressure - The pressure where the
machine is unloaded. For example if this
parameter is set to 360 psi (24.8 bar) the
machine will unload when the line pressure
is above 360 psi (24.8 bar).
• Load differential - The pressure differential
below the unload pressure where the
machine is loaded. For example if the
unload pressure is set to 360 psi (24.8 bar)
and the load differential is set to 10 psid (0.7
bar), the machine will load when the line
pressure goes below 350 psi (34.1 bar).
• P1 Max - Maximum sump pressure. An
alarm and shut down will occur when the
sump pressure rises above this pressure.
• Wye to delta transition timer - For full
voltage starters this parameter is set to 0.
• Restart time - Time to wait after power-up
before starting machine. This parameter is
used to keep several machines from starting
at the same time after power up, or to delay
start until other equipment is started. If dis-
abled the machine will not automatically
start after power up.
• Unload Stop Timer - If the machine is run-
ning in AUTO mode, this parameter speci-
fies the amount of time that the machine will
run unloaded before shutting off. If the time
is set less than 15 minutes (for example 5),
there may be times when the machine will
run unloaded for more than 5 minutes. This
is because there is another timer that keeps
the machine from being started more than
four times an hour.
• Language select - English, German,
Spanish, Italian and French may be selected
for display language.
LANGUAGE
ENGLISH
UNLD TIM
15 MIN
RST TIME
10 SEC
WYE DELT
10 SEC
P1 MAX
370 PSI
LOAD
10 PSI
UNLOAD
360 PSI
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