3WAY SYSTEM
Control Functions
1
- 12
1
3. Compressor Control
3-7-4. Primary Current Protection of HIC Board
The fan motor current is included in primary current. PCB is protected from the power consumption increase of
fan motor when the heat exchanger is blocked by frost, etc.
Limit current 1
Max. current 1 H
Stop
If this current is detected at regular intervals, alarm appears.
Frequency of inverter compressor goes down.
Frequency of inverter compressor can increase.
Frequency of inverter compressor cannot increase.
Max. current 1 L
Reference
Inverter layout
Diode Bridge
Power Source
IPM(FN)
Magnet SW
Noise Filter
L3
L1
L2
Noise Filter
IPM(CM)
Fan Motor
Compressor
W
U
V
W
U
V
Primary CT
Secondary CT
* When restarting after stopping by protection control, the compressor capacity will increase slowly.
H
L
8 hp
10 hp
12 hp
14 hp
16 hp
Primary current
Limit current 1 (A)
Max. current 1 L (A)
22.5
21.0
21.0
19.8
15.1
17.0
17.0
18.5
11.1
15.8
hp = horsepower
Max. current 1 H (A)
18.0
18.0
19.5
12.1
16.8
SM830226-00̲3WAY ECO-i SYSTEM.in12 12
SM830226-00̲3WAY ECO-i SYSTEM.in12 12
2013/02/13 11:52:25
2013/02/13 11:52:25
