Airwell KXV Series, Инструкция по эксплуатации

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Engineering manual
51

Compressor Discharge temperature protection
This protection comes to prevent the over heating of the compressor. The detection of the over heating is done according
the discharge temperature measured by the CDT sensor.

Heat Sink over heating protection
Heat sink protection comes to prevent compressor shutdown due to high heat sink temperature.
The heat sink is measured by the HST sensor.

Compressor current protection
Compressor current protection comes to prevent compressor shutdown due to high compressor current. The current is
measured using the CCR sensor.

High pressure protection
High pressure protection comes to prevent compressor shutdown due to high pressure in the system. The discharge
pressure is translated into saturation temperature (refer to Sect. for the saturation table). This saturation temperature is
called condensing temperature.

Low pressure protection
Low pressure protection comes to prevent compressor shutdown due to low evaporating pressure.

Total protection level
The total protection level is defined by the higher level of protection received from all types of protections modules.

Protection behavior
Protection level Target speed Acceleration rate Deceleration rate
Normal
Target speed load or
Target speed
protection
1rps/sec 1rps/sec
A1
Target speed load or
Target speed
protection
1rps/sec 1rps/sec
Stop-Rise
Target speed load or
Target speed
protection
N/A 1rps/sec
D1 20rps N/A 1rps/sec
D2 20rps N/A 1rps/sec
Stop Compressor N/A N/A N/A
Table 4-3