Daikin RXYQ10MAY1 [108/352] Inverter protection control

Daikin RXYQ18MAY1 [108/352] Inverter protection control
SiE39-407 Protection Control
Function 97
4.4 Inverter Protection Control
Inverter current protection control and inverter fin temperature control are performed to prevent
tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase.
H In the case of multi-outdoor-unit system, each INV compressor performs these controls in
the following sequence.
[Inverter overcurrent protection control]
[Inverter fin temperature control]
Nomal operation
Inverter current standby
Inverter current > 14.5A continues for 260 sec.
&
Invertercurrent >13.5A
INV upper limit frequency: 1-step down
from current compressor frequency
Invertercurrent >13.5A
Under inverter current
protection control
Inverter current < 13.5A
INV upper limit frequency
= 210 Hz
Inverter current < 13.5A continues
for 20 sec. or more.
INV upper limit frequency: 1-step up from
current compressor frequency
When occurring 4 times within 60 min.,
the malfunction code L8” is output.
Fin temp. standby
&
Nomal operation
Tfin>84°C
Tfin>84°C
INV upper limit frequency: 1-step /
1 min down from current compressor
frequency
Under fin temperature
protection control
Tfin>98°C
Tfin<81°C
INV upper limit frequency = 210 Hz
Inverter current < 81°C continues
for 3 min. or more.
INV upper limit frequency: 1-step / 1 min
up from current compressor frequency
Interval
When occurring 4 times within 60 min.,
the malfunction code L4 is output.

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