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Operating Panel & Settings
The Scroll Enclosure Air Compressor is controlled by a PLC
programmed at the factory. The operating status is displayed on the
HMI– touch screen panel on the front of the compressor unit. The
touch screen allows the user to select operating parameters within
predetermined limits set at the factory. The touch screen also allows
the user to change the display to get more information about the
operation of the individual compressor modules and to take action
based on alarms and warnings. This enclosed scroll system utilizes a
PLC for alternation and will change the pump sequence (Lead, Lag1,
Lag2 etc) after every start or after 10-minutes, which ever happens
first. The HMI offers a MIN and MAX system setpoint and three
calculated pressure differential settings. (Standard, Min and Max).
The factory default settings for HIGH and LOW operating Pressures
are:
Standard Models
High Pressure Models
Differential setting default is STANDARD
The HIGH Operating Pressure may be lowered, limits are shown
below:
Standard Models
High Pressure Models
The LOW Operating Pressures may also be adjusted. The limits
are:
Standard Models
High Pressure Models
RELEASED 01/Jul/2024 12:28:06 GMT
7.5-15 kW (10-20 HP) Scroll Enclosed Air Compressors
Operating Pressure into equal operating intervals. The differential for
the operating intervals may be adjusted by selecting STANDARD, MIN
or MAX on the set up screen.
slight overlap between the individual pump intervals. Each interval
will be 135% of the possible minimum value.
available range into equal intervals with no overlap. The selection will
result in the most frequent starting of the electric motors for a given
Operating Pressure range.
life. Exceeding 17 .5 starts per hour will cause a warning display.
overlap as compared to the Standard setting. Each interval will be 235%
of the possible minimum interval. Select this mode to minimum, the
90-116 PSIG
frequency of motor starts. Motor start frequency can be reduced by
using larger air receiver tanks, selecting a wider range between HIGH
119-145 PSIG
and LOW Operating Pressure and by selecting the widest differential.
operating pressure and the smallest differential that avoids exceeding
the motor start frequency limit.
Performing Pressure Adjustments
66-116 PSIG
95-145 PSIG
50-100 PSIG
79-129 PSIG
shown. (For W7.5-D and W11-T models, only two and three sets of
buttons/indicators will be shown)
SETPOINT" button. The screen will change to display:
The control automatically divides the range between HIGH and LOW
In STANDARD, the differential will be automatically set to have a
In MIN, the differential will be automatically set to divide the
NOTE: more frequent motor starting can lead to reduced motor
In MAX, the differential will be automatically set to increase the
To minimize power consumption, select the lowest possible HlGH
When power is applied to the unit, the above display will be
To adjust pressure settings, touch the screen at the "SELECT
47672197001 • 04/17/24 • Rev. F
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