¿ Inverter current protection control
The
Inverter current protection control is carried out to prevent the damage of the inverter caused by the increase of inverter
secondary current value.
N O T E
1 In the
case of base unit combinations, the control of the figure is carried out for the whole outdoor units to be
connected.
2 In order to carry out this control, the Inverter current value of each outdoor unit is calculated and the maximum
value is used.
Iinv: Inverter secondary current detected value.
A. Normal operation.
B. Forced decrease in frequency (3.0 Hz/s).
C. Not allowing frequency increases (only frequency decreases are
allowed).
D. Abnormal stoppage (cause of the stop d1-17).
(1)
For 180 seconds.
¿ Inverter fin temperature increase protection control
The inverter fin temperature increase protection control is carried out to prevent the damage of the inverter caused by the
increase in inverter fin temperature.
N O T E
1 In the
case of base unit combinations, the control of the figure is carried out for the whole outdoors units to
be connected.
2 In order to carry out this control, the inverter fin temperature of each outdoor unit is calculated and the
maximum value is used.
Tfinv: inverter fin temperature sensor detected value.
A. Normal operation.
B. Forced decrease in frequency (0.25 Hz/s).
C. Not allowing frequency increases (only frequency decreases are
allowed).
D. Abnormal stoppage (cause of the stop d1-17).
5 Control system
107
SMGB0065 rev. 1 - 12/2010
5
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