4.3 Startup Control for Cooling Only/Main Cooling Operation
Table 3-4.1: Component control during startup in cooling only/main cooling mode
Initial step for 30S, then+8Hz×Nstep /
10S. (Until it reaches Pc_max-Pe_min ≥
0.2MPa)
8-10HP 42Hz, 12-
22HP 51Hz, 24-34HP
88HZ, 36-60HP
138Hz,
then adjust according
to the high pressure
and low pressure etc.
Start: 0 step, then adjust by the high
pressure and low pressure
Maintains previous
position
Determined based on the initial mode of the heat exchanger
Electronic
expansion valve
Compressor operation, 2880pls
Compressor not operation, initial 135pls, then adjusted according to the
module temperature NTC.
Compressor operation, 17pls→ +8pls per 20S based on high
pressure or discharge temperature.
Compressor not operation, 0pls.
Compressor operation, ON
Compressor not operation, OFF
ON if Pc≥3.3MPa or Pe
＜
0.18MPa, else OFF.
Control based on IDUs’ mode
Electronic
expansion valve
Control based on IDUs’ mode
Electronic
expansion valve
Electronic
expansion valve
300pls (500P EEV)
1200pls (2000P
EEV)
500P EEV IDU: Maintain 300pls for 5min
2000P EEV IDU : Maintain 1200pls for 5min
End if startup time arrives 5 min or the minimum superheat of discharge
temperature ≥10°C or Tc_max > 50°C .
Notes:
1. The period for restarting after stopping is 7min when is necessary to equalize the pressure in the whole system.
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