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Defrost Term Temp
This field shows the current value of the
defrost termination sensor in the CUB, which
may be a digital value (ON/OFF) for a Klixon
type sensor or a temperature value, depending on
the selected defrost termination type.
7.2.2. Sensor Control
The input and output information for the
CUB sensor control applications is shown in the
box in the bottom left corner of the screen,
labeled AV01 and AV02 on the left side of the
screen. Each row consists of three fields show-
ing (1) the name given to the sensor control
application, (2) the current input value (shown in
the engineering units programmed for the sensor
control application), and (3) the current sensor
control output state.
7.2.3. Outputs and Operational
States
All the major control outputs for a CUB and
information about case circuit and board online
status are grouped together in the right side col-
umn of the screen.
Ckt State
Circuit State shows the current state of the
circuit. The states that may appear here are:
• Refrigeration - The CUB is in Refrigeration mode.
• Defrost - Refrigeration is OFF and defrost is active
in the circuit.
• Off - The refrigeration setpoint is satisfied and the
CUB is not refrigerating.
• Pump Down - Is a transition state where the CUB is
going from Refrigeration into Defrost or OFF,
which allows refrigerant to be pumped out of the
evaporator. Pump Down is an optional state. If en-
abled, the two types are Idle Pump Down and De-
frost Pump Down.
• Drip - The CUB is in an inactive state immediately
after Defrost that allows moisture to drip from the
evaporator coils. Refrigeration will start immediate-
ly after the Drip stage is complete.
• Cmp Delay - The CUB is in a user-programmed de-
lay period between the opening of the refrigeration
solenoid and the activation of the compressor. This
occurs when a CUB transitions from Off to Refrig-
Viewing the CUB Status Screen
eration.
Board #
Indicates the number of the CUB board
selected.
Board Status
This field shows the operational state of the
CUB board itself. If everything is operating nor-
mally, this field will read Online.
MR Temp Zone 1-4
This field will show the temperature of the
motor room zone this CUB is assigned to.
Refrigerant
For reference, this will show the type of
refrigerant present in the condensing unit.
Sat Suct Temp
The saturation suction temperature is calcu-
lated automatically for this condensing unit
based on the refrigerant type and the current suc-
tion pressure. The result of this calculation is
shown in this field.
Suct Temp
The current temperature of the suction tem-
perature sensor if defined as one of the 16 CUB
inputs.
Compressor State
This field shows whether the compressor is
ON or OFF.
Condenser Fans
These fields show the ON/OFF state of the
condenser fan(s).
Drop Leg Temp
The current drop leg temperature used for
TD control.
TD
The current value of the temperature differ-
ential (drop leg temperature + drop leg offset -
plenum temperature).
Defrost
This field shows the ON/OFF state of the
defrost output.
Refr Sol
This field shows the ON/OFF state of the
refrigeration solenoid.
The MultiFlex CUB E2/ Einstein Interface • 25
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