T-362
4–16
Cd58 Water Pressure Switch / Condenser Fan Switch State or Override Logic State
Cd58 displays “CLOSE” if the WPS or CFS switch contacts are closed or if these options are not installed.
“OPEn” is displayed when the WPS or CFS switch contacts are open.
When the WPS/CFS Override Logic is “TRUE”, the right display will flash on all units. This is always the
case, whether the unit has a WPS or CFS installed or not.
NOTES
:
This CLOSE/OPEn state displayed in this Code Select function only applies to units that have the ability
to detect the state of a WPS/CFS. This function should not be relied upon to display the condition of the
switch on units that don’t have a WPS/CFS switch connected to ECG2 exclusively.
The ability of the WPS/CFS Override Logic to control the condenser fan is limited. It is not possible for this
logic to control the fan on units that have the WPS or CFS wired in series with the fan contactor. Units
wired in this configuration can indicate that the WPS/CFS Override Logic is active by flashing the right
display, however, the wiring will not allow for control of the condenser fan.
Configurable Functions
- Cd59 through Cd65 are user-selectable functions. The operator can change the value
of these functions to meet the operational needs of the container.
Cd59 Pump Down Logic
Cd59 allows setting of the pump down logic control. The display will flash between “STArT PdN” and
“PrESS EnTEr”.
Upon entering Cd59 the operator will be required to acknowledge that they want to initiate the pump down
control. The display will flash between “STArT PdN” and “PrESS EnTEr”. Once the decision to continue
is confirmed pump down logic will begin, and will take complete control of the unit until pump down either
succeeds or fails. This operation can not be halted once it begins without power cycling the unit.
After pump down logic has been initiated, the operator will be notified to close the Liquid Line Valve, the
display will flash between “CLOSE LLV” and “PrESS EnTEr”. Once complete the display will read “P dN”
to the left, and the current suction pressure to the right.
If the automatic pump down logic succeeds within 20 minutes, the unit will turn itself off, and the display
will notify the operator that pump down is complete by flashing between “P dN DOnE” and “SHUT OFF”.
The operator must then shut off the unit.
If the automatic pump down logic does not complete within 20 minutes, the unit will drop out of Cd59 and
return to its previous control condition.
Cd60 Evaporator Fan Pulsing Temperature Setting
Cd60 contains a selectable temperature range used to determine the engagement point of the Evaporator
Fan Pulsing logic. Default setting is -18.1°C. The user may change the temperature by pressing ENTER,
then scrolling to the desired temperature using either Arrow key. Press Enter to accept the change. The
temperature setting will be retained until either a pre-trip or Trip Start is initiated at which time the
temperature will set to the default setting.
“-----” will be displayed if CnF68 is configured OUT.
Cd62 High Speed Evaporator Fan Setting
Cd62 allows the evaporator fan speed to be forced to high while temperature control is being performed
in the perishable setpoint range. When set to “On”, evaporator fans operate in high speed regardless of
any other active option that can control evaporator fan speed.
Following a power cycle, the state of the function select code is retained at its state prior to the power
cycle. If “On”, this function select code will be set to “OFF” when any Trip Start occurs or any pre-trip test
is initiated.
“-----” will be displayed if setpoint is in frozen range or if CnF66 is configured OFF.
Table 4–4 Controller Function Codes
Code Description
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