Johnson Controls FRICK QUANTUM HD, Операция

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QUANTUM™ HD COMPRESSOR CONTROL PANEL
OPERATION
090.040-O (MAR 12)
Page 49
High Stage/Booster
The High Stage System Link setpoint is provided
to tie a system of Booster compressors to a sys-
tem of High Stage compressors. For example, if
the Booster compressors are setup on System
#1 and the High Stage Compressors are on Sys-
tem #2, the High Stage System Link setpoint
from System #1 would be set as System 2.
When the Booster System’s leader wants to
start the fi rst Booster compressor, it fi rst checks
that a Booster compressor is available to run
and then sends a signal to the High Stage
System’s leader telling it to start a High Stage
compres-sor. If all the High Stage compressors
are off, the High Stage System’s leader will
start its fi rst compressor, regardless of what the
High Stage Control Input is reading. When the
Booster System’s leader observes that a High
Stage compressor is running, it will allow a
Booster com pressor to start.
After the fi rst High Stage compressor begins to
run, compressors in both systems will cycle on
and off as their Control Inputs move up and
down. The only stipulation to the control strat-
egy is that one High Stage compressor must al-
ways remain on as long as at least one Booster
compressor is running. If all the Booster com-
pressors turn off, the High Stage compressor
can then turn off as well.
This concludes the Sequencing setup.