Technibel PHRIE Series - Compressor Frequency Control; Min & Max Frequency Control

81
4.2 COMPRESSOR FREQUENCY CONTROL
Performed by A3 board
The frequency of the compressor's inverter is limited by either of the following controls
depending on whether the cooling or heating mode is in operation.
• Cooling Mode : · Water Inlet temperature control
· Maximum and minimum frequency control
· Current release control
· Cooling high-load prevention control
· Cooling freeze prevention control
· Discharge temperature control
• Heating Mode : · Water Inlet temperature control
· Maximum and minimum frequency control
· Current release control
· Heating high-load prevention control
· Discharge temperature control
4.3 MIN. & MAX. FREQUENCY CONTROL
Performed by A3 board
The compressor's inverter frequency is controlled in accordance with the model and operation mode.
The maximum and minimum frequencies for each model are shown in the table below.
Note: There are cases in which frequency is limited with other control functions depending on operational conditions,
so operations are not always carried out in accordance with the maximum frequencies listed below.
Cooling Mode Heating Mode
Minimum Hz * Maximum Hz Minimum Hz * Maximum Hz
PHRIE 095
15~24 Hz 87 Hz 15~24 Hz 108 Hz
PHRIE 125
24 Hz 111 Hz 24 Hz 114 Hz
PHRIE 155
15~24 Hz 54 Hz 18~24 Hz 72 Hz
PHRIE 157
15~24 Hz 54 Hz 18~24 Hz 72 Hz
PHRIE 175
15~24 Hz 69.6 Hz 18~24 Hz 85 Hz
PHRIE 177
15~24 Hz 68.4 Hz 18~24 Hz 78 Hz
PHRIE 195
15~24 Hz 75 Hz 18~24 Hz 88 Hz
PHRIE 197
15~24 Hz 80.4 Hz 18~24 Hz 85 Hz
PHRIE 257
25~33 Hz 91.2 Hz 25~33 Hz 96 Hz
PHRIE 307
25~33 Hz 80 Hz 25~33 Hz 85 Hz
*There are cases in which the minimum frequency can vary to protect the compressor in accordance with outdoor air
temperature and thermal loads.