Status- Current Pressures, Temperatures, Inputs And Outputs; Control Parameters- Pressure, Temperature And Timer Settings - Sullair LS20 Operator's Manual And Parts List

Section 5
SUPERVISOR CONTROLLER
value. If during a change the ESC key is pushed,
editing is terminated and the original value is reset.
The left and right arrow keys can be used to move
to other digits or letters in a value. For example to
change a value from 100 to 500, the left arrow key
can be used to position the cursor to the 1 digit in
the 100, and the up arrow key used to increment
the digit to 5.
Text fields can also be edited in the same manner.
Push the enter key to start the edit, use the left and
right arrow keys to move to the letter to be changed,
then use the up and down arrow to change the let-
ter. Push the enter key to complete the edit.
The following are detailed descriptions of the vari-
ous displays.
5.4 STATUS - CURRENT PRESSURES, TEMPERA -
TURES, INPUTS AND OUTPUTS
All inputs and outputs are displayed showing both
the designator and the description
Discharge) along with the selected temperature (C
or F) or pressure (psi, bar, kPa) units. Digital inputs
and outputs are shown either as a '0' (zero) or '1'
(one). Zero is off and one is on. This is a view only
display.
The order of display is :
Temperatures - T1 through T5 depending on
model.
Pressures - P1 through P4 depending on model.
Delta pressures - dp1 through dp3 depending on
model.
Load Hours - Hours machine has run loaded.
Run Hours - Hours machine has run loaded or
unloaded.
Load Cycles - Number of load/unload cycles.
Starts - Number of times machine has started.
E-Stop String - E-Stop push button.
Aux E-Stop - Auxiliary E-Stop, wired by customer.
Digital Inputs - D1 through D10, depending on
model.
Relay Outputs - K1 through K8, depending on
model.
5.5 CONTROL PARAMETERS - PRESSURE, TEM-
PERATURE AND TIMER SETTINGS
Parameters that control the operation of the
machine are viewed and set using this display.
These parameters may vary by machine model.
The Control Parameters are :
24
Unload pressure - The pressure where the
machine is unloaded. For example if this parameter
is set to 110 psi (7.6 bar) the machine will unload
when the line pressure is above 110 psi (7.6 bar).
Load delta - The pressure differential below the
unload pressure where the machine is loaded. For
example if the unload pressure is set to 110 psi (7.6
bar) and the load differential is set to 10 psid (0.7
bar), the machine will load when the line pressure
goes below 100 psi (6.9 bar).
Unload Time - If the machine is running in AUTO
mode, this parameter specifies the amount of time
that the machine will run unloaded before shutting
off. If the time is set less than 15 minutes (for exam-
ple 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. This secondary timer is disabled when a
(eg. T1-
machine is configured for VSD motor control.
Drain Interval - If the machine has an electric sole-
noid drain, this parameter and the following param-
eter (Drain Time) are used to turn on the drain. The
interval is the time between activations of the drain
and the Drain Time is the length of the time ener-
gized. This does not apply to the Sullair SCD zero
loss drain, which is not controlled or monitored by
the Supervisor.
Drain Time - Length of time that drain is energized.
Restart time -
Enabling this function also enables automatic
restart after power recovery. Be sure to depress
the Emergency Stop button to defeat this func-
tion when automatic start is to be prevented.
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 parameter is zero, the machine will not auto-
matically start after power up. If this parameter is a
number larger than zero, the machine restarts after
a delay defined by this time. For example, if the
Restart Time is set to 10 seconds, then the machine
will be enabled to start after 10 seconds.
Wye to delta transition timer - Also used to con-
trol the closed inlet start valve. Disable by setting to
zero (0), standard for full voltage start. Requires
approximately 4-6 seconds for wye-delta or solid
state starting.
Modulate - Default state is Yes for normal machine