Sollatek FDEx2 - Defrost Function

FDEx2 INSTRUCTION MANUAL FDEx2 INSTRUCTION MANUAL
A3+ CMYK
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A3+ CMYK
10.6 DEFROST FUNCTION
DESCRIPTION UNIT RANGE
Enable Defrost Function Yes or No
Compressor Operation On During Defrost Yes or No
Defrost Temperature Probe None, Probe#1 or Probe#2
Enable Immediate Defrost at Power Up Yes or No
Immediate Defrost Enable Temperature °C / °F N/A, 0 to 25°C / 32 to 77°F
Inhibit Defrost Until First Pull-down Event Yes or No
Inhibit Defrost Temperature (using Probe#1) °C / °F N/A, 0 to 25°C / 32 to 77°F
Duration Defrost is Inhibited (hours) Hours N/A, 1 to 255
Defrost Enable Temperature Yes or No
Absolute Temperature (using Probe#1) °C / °F N/A, -40 to +70°C / -40 to +158°F
Degrees Above Cut-In (using Probe#1) °C / °F N/A, 0 to 20°C / 0 to 36°F
Type of Defrost Start Time Real, Accumulated or Continuous
Defrost Start Time (hours) Hours N/A, 1 to 255
Defrost Duration (mins) Minutes N/A, 1 to 255
Minimum Defrost Duration (mins) Minutes N/A, 1 to 255
Minimum Duration Between Defrost Cycles (hours) Hours N/A, 1 to 255
Defrost Start Temperature °C / °F N/A, -40 to +70°C / -40 to 158°F
Defrost End Temperature °C / °F N/A, -40 to +70°C / -40 to 158°F
Enable Temperature Defrost During First Pull-down Yes or No
Pre-Defrost Relays Off Delay Seconds N/A, 1 to 255
Drip Down Relays Off Delay Seconds N/A, 1 to 255
Post Drip Down Recover Time Delay Seconds N/A, 1 to 255
Post Drip Down Recover Temperature Override °C / °F N/A, -40 to +70°C / -40 to 158°F
Enable Defrost Emergency Mode (when defrost probe is faulty) Yes or No
Emergency Mode Defrost Start Time (hours) Hours N/A, 1 to 255
Emergency Mode Defrost End Time (mins) Minutes N/A, 1 to 255
Enable Defrost During Probe#1 Active Faulty Mode Yes or No
Enable Defrost During Probe#2 Active Faulty Mode Yes or No
Enable Defrost Function
Select whether defrost is active.
No = Defrost is disabled. All defrost parameters become de-active and the FDEx2 will not go into defrost.
Yes = Defrost is enabled. FDEx2 will act according to the set parameters.
Compressor Operation On During Defrost
Select if the compressor is ON during defrost mode.
No = Compressor will turn OFF (if ON) and remain OFF during defrost.
Yes = Compressor will turn ON (if OFF) and remain ON during defrost (for Hot Gas defrost).
Defrost Temperature Probe
Select the temperature probe used to determine the defrost by temperature function.
None = Defrost will start and end with time only.
Probe 1 = Regulating probe connected to P1.
Probe 2 = Probe connected to P2. Only available if 2 is selected from “Number of Temperature Probes”.
Enable Immediate Defrost at Power Up
Select whether defrost is entered immediately when the FDEx2 is powered ON.
No = FDEx2 will operate normally on power-up according to set parameters and will only enter defrost when other defrost
conditions are satised.
Yes = Defrost starts on power-up depending on the Immediate Defrost Enable Temperature.
Immediate Defrost Enable Temperature
The maximum temperature sensed by the defrost probe at power-up for defrost to be entered. If set to N/A, the FDEx2
will enter defrost mode at power-up regardless of the defrost temperature.
Note: Immediate defrost will not terminate with defrost end temperature, it will ONLY be terminated when defrost duration has
been satised. If the defrost duration is set to N/A, immediate defrost will terminate after 10 minutes.
Note: Immediate defrost is intended for production tests only and not for eld operation. Ensure this is disabled for eld units.
Inhibit Defrost until First Pull-down Event
Select whether defrost is enabled during the rst pull-down event. The First pull-down event nishes when the compressor
cycles OFF for the rst time due to the temperature dropping below the cut-out value.
No = Defrost is enabled. Defrost can take place during the rst pull-down event if dened defrost conditions are met.
Yes = Defrost is disabled. Defrost will not take place until the rst pull-down event has nished.
Inhibit Defrost Temperature (using Probe #1)
The regulation temperature sensed after a power-up event, below which defrost will not be inhibited anymore.
Duration Defrost is Inhibited
The duration of the rst pull-down event and therefore the period of defrost will be inhibited. After this time the FDEx2
will resume normal operation and defrost will be enabled as per the set parameters.
Defrost Enable Temperature
Select whether defrost is disabled depending on the regulation probe temperature.
No = Defrost is enabled regardless of the regulation probe and will be initiated by the set parameters.
Yes = Defrost will be disabled if the regulation temperature is above the set temperature even if other defrost parameters are
satised. If the regulation temperature is below the set value, defrost will be initiated as normal.
Absolute Temperature (using Regulation Probe)
The maximum regulation temperature before the defrost function is disabled.
Degrees Above Cut-in (using Regulation Probe)
The temperature differential between the cut-in temperature and the regulation temperature that the defrost function
will be disabled.
Defrost Start Timer Type
Select the type of timer to start a defrost cycle.
rEL: Real-Time = The defrost start time will continuously count regardless of whether the compressor is ON or OFF and the
defrost will start when the timer value exceeds the value of Defrost Start Time (if enabled).
aCC: Accumulated Time = The defrost start timer will count only when the compressor is ON and stops counting (not resetting)
when the compressor is OFF, resulting in counting the accumulated durations during which the compressor has been ON. The
defrost will start when the timer value exceeds the value of Defrost Start Time (if enabled).
Cnt: Continuous Timer = The defrost start timer will count only when the compressor is ON and resets to zero whenever the
compressor is OFF. The defrost will start when the timer value exceeds the value of Defrost Start Time (if enabled).
Defrost Start Time
The duration between the nish of a defrost cycle and the start of the next one, if not started due to temperature.
Defrost Duration
The duration of a defrost cycle, if not ended due to temperature.
Minimum Defrost Duration
The minimum allowable time for a defrost cycle. The Defrost cycle will not end until this time has elapsed regardless of whether
Defrost End Time or Defrost End Temperature has been met.
Minimum Duration Between Defrost Cycles
The minimum allowable time between the nish of one defrost cycle and the start of the next defrost cycle. The next defrost
cycle will not start until this time has elapsed regardless of whether Defrost Start Time or Defrost Start Temperature has been
met.