-
334
-
'13 • PAC-T-197
(7) Heating low outdoor temperature protective control
(a) Operating conditions:
When the outdoor air temperature (TH2) is 4ºC or lower continues for 30 seconds while the
compressor command speed is other than 0 rps.
(b) Detail of operation:
The lower limit compressor command speed is change as shown in the figure below.
(c) Reset conditions:
When either of the following condition is satisfied.
1) The outdoor air temperature (TH2) is higher than 6ºC.
2) The compressor command speed is 0 rps.
(8) Compressor overheat protection
(a) Purpose:
It is designed to prevent deterioration of oil, burnout of motor coil and other trouble resulting from the
compressor overheat.
(b) Detail of operation
1) Speeds are controlled with temperature detected by the sensor mounted on the discharge pipe.
Discharge pipe temperature (˚C)
Lower limit
(4)
After lapse of 3 min. or over
(3)
After lapse of 3 min. or over
(3)
After lapse of 3 min. or over
(3)
4 rps
4 rps
(1)
0 rps
(Example) Fuzzy
95
105
115
Notes (1) When the discharge pipe temperature is in the range of 105~115ºC, the speed is reduced by 4 rps.
(2) When the discharge pipe temperature is raised and continues operation for 20 seconds without changing, then the speed is reduced again by 4 rps.
(3) If the discharge pipe temperature is in the range of 95~105 even when the compressor command speed is maintained for 3 minutes when the tem-
perature is in the range of 95~105ºC, the speed is raised by 1 rps and kept at that speed for 3 minutes. This process is repeated until the command
speed is reached.
-8
-6
Lower limit 45 rps
Lower limit 35 rps
Normal operation
4
6
Outdoor air temperature (°C)
(4) Lower limit speed
2) If the temperature of 115ºC is detected by the sensor on the discharge pipe, then the compressor will stop immediately.
When the discharge pipe temperature drops and the time delay of 3 minutes is over, the unit starts again within 1
hour but there is no start at the third time.
(9) Current safe
(a) Purpose:
Current is controlled not to exceed the upper limit of the setting operation current.
(b) Detail of operation:
Input current to the converter is monitored with the current sensor fixed on the printed circuit
board of the outdoor unit and, if the operation current value reaches the limiting current value, the
compressor command speed is reduced.
If the mechanism is actuated when the compressor command speed is less than 30 rps, the compres-
sor is stopped immediately. Operation starts again after a delay time of 3 minutes.
(10) Current cut
(a) Purpose:
Inverter is protected from overcurrent.
(b) Detail of operation:
Output current from the inverter is monitored with a shunt resistor and, if the current exceeds the
setting value, the compressor is stopped immediately. Operation starts again after a delay time of
3 minutes.
Cooling
Heating
Lower Limit Speed
25 rps
32 rps
Item
Model
Summary of Contents for V Multi 100VNX
Page 98: ... 97 13 PAC T 197 Models FDT100VF1 125VF 140VF H H H H H C B A F G D G PJF000Z285 A ...
Page 101: ... 100 13 PAC T 197 Models FDEN60VF 71VF1 C2 C1 A B A B D C1 C2 C1 C2 E G F C PFA003Z817 ...
Page 116: ... 115 13 PAC T 197 b Wireless remote control RCN E1R 60 17 150 Unit mm ...
Page 291: ... 290 13 PAC T 197 261 12 PAC T 173 ー K ...
Page 590: ... 589 13 PAC T 197 3 8 SUPER LINK E BOARD SC ADNA E F ...
Page 591: ... 590 13 PAC T 197 ...
