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Oil Fail Setpt
If you chose Pressure as the Oil Failure
Type, the Oil Failure Setpoint is the pressure that
indicates a low oil condition in the compressor.
When the oil pressure falls below this setpoint
for Oil Failure Delay, a compressor oil failure
alarm will be generated.
Oil Fail State
If you chose Digital as the Oil Failure Type,
the Oil Fail State is the state of the digital pres-
sure switch that indicates a low oil condition.
When the digital input transitions to this state for
Oil Failure Delay, a compressor oil failure
alarm will be generated.
Oil Fail Delay
The Oil Failure Delay is the amount of time
an analog oil pressure transducer must be below
the setpoint, or a digital pressure switch must be
in the fail state, before an alarm will be gener-
ated.
Analog Auto Rst
If you chose Pressure as the Oil Failure
Type, the Analog Auto Rst field sets the number
of times the CUB will attempt to reset the oil
failure by turning the compressor OFF for the
Reset Delay, and then ON. If the oil sensor still
registers a failure after all retries have occurred,
the CUB will consider the compressor failed and
will not attempt another reset.
Enter a number of retries from 0-2.
Dig. Auto Reset
If you chose Digital as the Oil Failure Type,
the Auto Resets field sets the number of times
the CUB will attempt to reset the oil failure by
turning the compressor OFF for the Reset Delay,
and then ON. If the oil switch still registers a
failure after all retries have occurred, the CUB
will consider the compressor failed and will not
attempt another reset.
Enter a number of retries from 0-2.
40 • MultiFlex CUB-II and CUB-TD I&O Guide
Reset Delay
The Reset Delay is the amount of time the
CUB will wait between retry attempts. Enter the
desired reset delay in hours:minutes:seconds
(H:MM:SS) format.
Oil Xducer Run
This field determines whether the CUB will
continue to attempt to control the compressor as
normal even after an oil failure has occurred. If
this field is set to Yes, the CUB will turn the
compressor output ON and OFF as normal dur-
ing an oil failure. If set to No, the CUB will
attempt the auto resets described above. If after
the auto resets the compressor has an oil failure,
a reset from the E2 or Einstein or CUB will be
required to clear the oil failure.
7.3.10.2. Discharge Pressure Alarm
The CUB can be programmed with up to two
levels of discharge pressure alarm notification.
A Discharge Pressure Alarm setpoint may be
programmed to generate an alarm when the pres-
sure rises too high. A Discharge Trip Setpoint
may also be programmed to shut down the com-
pressor when the discharge pressure reaches
unsafe levels.
Disch Pr Alarm
Enter the discharge pressure level that, when
exceeded, will cause a discharge pressure alarm
to occur.
Disch Pr Trip
Enter the discharge pressure level that, when
exceeded, will cause a system shutdown. The
Discharge Trip setpoint should be higher than
the Discharge Pressure Alarm setpoint.
Disc Reset Diff
A condensing unit that has been shut down
due to Discharge Trip can be automatically reset.
The Discharge Auto Reset is the pressure level
the discharge pressure must fall to in order for
the CUB to attempt a reset. When the pressure
reaches this setpoint, the CUB will restart the
system.
026-1705 Rev 7 06-APR-2010
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