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6.2 PROTECTIVE DELAYS
6.2.1 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
Off
Less than
Temperature
Blind Time
Temperature
Compressor
6.2.2 BAD VOLTAGE BLIND TIME
The software permits high and low mains voltages transitions for short periods of time preventing inadvertent
compressor stop-starts. Preset values of 0.5 and 2 seconds (configurable) respectively are implemented. However, if the
mains voltage goes higher or lower than set extreme limits, then the JEA will immediately disconnect the outputs. The
voltage must remain good for a few seconds (a pre-set value of 10 seconds) before the controller will connect all the
outputs.
IDH
HVD
LV D
ID L
On
Off
Intelligent time delay
Less than 0.5 secs
Less than 2 secs
Intelligent time delay
High limit
Low limit
Mains power
Compr essor
IDH= Immediate Disconnect High
IDL= Immediate Disconnect Low
SOLL AT EK
INTELLIGENT CONTROL S