Emerson Vilter MicroVission, Operation And Service Manual

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7 – 3
Section 7 • Timers
MicroVission Controller • Operation and Service Manual • Emerson • 35391MV 1.0
Accumulative Anti-Recycle Timer
This timer forces a specified time between the consecu-
tive compressor starts. When the compressor starts,
this timer resets the time and starts accumulating the
running time. Once the compressor shuts down, it will
not be allowed to restart for the remainder of time left
on the Accumulative Anti-Recycle Timer. Unlike the True
Anti-Recycle Timer, if the compressor has run for the en-
tire time of the Accumulative Anti- Recycle Timer and
then if compressor shuts down, the compressor will be
allowed to restart immediately.
NOTE
The operator will be able to modify Accumulative Anti-
Recycle Timer setpoint only if “Accumulative” option is
set for Anti-Recycle setting in the Configuration screen.
Hot Starts per Hour
This counter will count the number of compressor starts
in an hour. This counter will reset only when the time
between two compressor starts is at least an hour. If in
an hour’s time, counter reaches to its set value, then the
compressor will not be allowed to start until an hour is
complete from the time when the counter was last re-
set. This counter allows consecutive compressor starts,
but once the counter reaches to the set value, it requires
a one-hour window between compressor starts for the
counter to reset.
NOTE
The operator will be able to modify Hot Starts per Hour
setpoint only if “Hot Starts” option is set for Anti-Recycle
setting in the Configuration screen.
Oil Recovery Solenoid Shutoff Delay
This is the time for which Oil Recovery Solenoid Digital
Output will remain ON when the state of Low Oil Level
Digital Input is changed from Active Low to Active
High. When this timer expires, the state of Oil Recovery
Solenoid Digital Output will change to OFF.
Low Oil Level Alarm Delay
This is time for which “Low Oil Level Alarm” will not be
generated once “Low Oil Level” Digital Input is found
Active Low. If state of “Low Oil Level” Digital Input re-
mains Active Low continuously for this time, then alarm
condition will be generated and “Low Oil Level Alarm”
message will be displayed on the Main screen.
Low Oil Level Trip Delay
This is time for which “Low Oil Level Trip” will not be gen-
erated once “Low Oil Level” Digital Input is found Active
Low. If state of “Low Oil Level” Digital Input remains
Active Low continuously for this time, then trip condi-
tion will be generated and “Low Oil Level Trip” message
will be displayed on the Main screen.
NOTE
The operator will be able to detect and see “Low Oil Level
Trip” message on Main screen only if “Oil Level Trip”
checkbox is Enabled in the Configuration screen