Sollatek FDEx2 - Features; Temperature Blind Time; Bad Voltage Blind Time; Timesave Function

FDEx2 INSTRUCTION MANUAL FDEx2 INSTRUCTION MANUAL
A3+ CMYK
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A3+ CMYK
4. FEATURES
4.1 TEMPERATURE BLIND TIME
The software will ignore the sensor temperature reading for the first few seconds (a pre-set value of 10 seconds) after the
compressor is switched on. This is to prevent short-term thermal effects such as those caused by the fan starting to operate
causing disconnection.
Cut in
Average
Cut out
On
O
Less than
Temperature
Blind Time
Temperature
Compressor
4.2 BAD VOLTAGE BLIND TIME
The software permits high and low mains voltages transitions for short periods of time preventing inadvertent compressor stop-
starts. Present values of 0.5 and 2 seconds (configurable) respectively are implemented.
However, if the mains voltage becomes too extreme (HVD + 10%) and (LVD - 20%), the FDEx2 will immediately disconnect the
compressor.
IDH
HVD
LVD
IDL
On
O
Intelligent time delay
Less than 0.5 secs
Less than 2 secs
Intelligent time delay
High limit
Low limit
Mains power
Compressor
IDH= Immediate Disconnect High
IDL= Immediate Disconnect Low
4.3 TIMESAVE™ FUNCTION
The FDEx2 has a built-in sensing period after a bad voltage event. When the voltage returns to good after a bad voltage period
the FDEx2 will only reconnect power to the compressor and other connected outputs once it has sensed the voltage remains
within set limits for at least 10 seconds.
4.4 INTELLIGENT TIME DELAY
The FDEx2 controller has a built-in intelligent time delay of up to 5 minutes (customer configurable). After a compressor
disconnection period, either from cycling OFF, defrost, or HVD/LVD the FDEx2 will automatically adjust the time delay on the
disconnection period before allowing the compressor to turn ON. For example, if the Time delay is set to 3 minutes, a 2-minute
disconnection will result in only a 1-minute additional delay, making the total delay 3 minutes. Any disconnection of 3 minutes or
over and the FDEx2 will immediately turn the compressor ON.
The time delay is essential in allowing compressor gases to neutralise, ensuring that the mains have stabilised before
re-connection and avoiding a locked rotor condition.
Operation of time delays during normal operation:
Compressor
ON
OFF
ON
OFF
Intelligent Time
Delay (1 min)
Disconnection Period
(2 mins)
Compressor
Disconnection Period
(7 mins)
Operation of time delays during a brownout (bad voltage):
Compressor
Voltage GOOD Voltage BAD Voltage GOOD
ON
OFF
ON
OFF
TIMESAVE™
Intelligent Time
Delay (1 min)
Disconnection Period
(2 mins)
Compressor
Voltage GOOD Voltage BAD Voltage GOOD
TIMESAVE™
Disconnection Period
(7 mins)
*Above illustrations use intelligent time delay set to 3 minutes