Auto Cycle - Emerson Vilter MicroVission Operation And Service Manual

Section 5 • Compressor Control

Auto Cycle

The auto-cycle setpoints define the control points in
which the compressor will automatically cycle on and off
when placed into "Auto" run mode. These setpoints can
be "enabled" or "disabled" using the check box. The au-
to-cycle function will operate only in local "Auto" mode
and Direct I/O "Remote Auto" mode. If the auto cycle
feature is enabled while running in any other remote
mode, the function will simply be ignored.
Auto Cycle Suction Pressure
• Enable: Enables the Auto cycle control. Uncheck
the box to disable the Auto cycle setpoints.
• Start Pressure: When the suction pressure is equal
to or greater than this setpoint, the compressor will
start.
• Start Delay: Before the compressor start, there is a
delay for the set time to ensure that suction pres-
sure remains equal to or greater than the "Start
Pressure".
• Stop Pressure: When the suction pressure is less
than or equal to this setpoint, the compressor will
stop.
Figure 5-4. Compressor Control Screen - Auto Cycle (Suction Pressure)
MicroVission Controller • Operation and Service Manual • Emerson • 35391MV 1.0
• Stop Delay: Before the compressor stop, there is
a delay for the set time to ensure that the suction
pressure remains less than or equal to the "Stop
Pressure".
Auto Cycle Process Temperature
• Enable: Enables the Auto cycle control. Uncheck
the box to disable the Auto cycle setpoints.
• Start Temperature: When the process temperature
is equal to or greater than this setpoint, the com-
pressor will start.
• Start Delay: Before the compressor start, there is a
delay for the set time to ensure that process tem-
perature remains equal to or greater than the "Start
Temperature".
• Stop Pressure: When the process temperature is
less than or equal to this setpoint, the compressor
will stop.
• Stop Delay: Before the compressor stop, there is
a delay for the set time to ensure that the process
temperature remains less than or equal to the "Stop
Temperature".
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