Protection Control
SiME332106E
62
Part 4 Functions and Control
Inverter overcurrent protection control by secondary current [CTi2]
Cooling
Condition
Secondary current [CTi2] (A)
A
> 17.5 (90 sec) or > 18.0
B
> 18.5 (90 sec) or > 19.0
C
> 22.1
D
≤ 14.5
E
≤ 18.5
Heating
Condition
Secondary current [CTi2] (A)
A
> 18.0 (90 sec) or > 18.5
B
> 19.0 (90 sec) or > 19.5
C
> 22.1
D
≤ 15.0
E
≤ 19.0
6
8
10
12
14
16
18
20
22
24
43
44
45
46
47
48
49
50
51
52
53
CTi1 (A)
Graph B
Ta (°C)
Normal control
Reduce compressor step
Set current step as max limit
A
D
B
Inverter current standby
C
OR
&
Compressor max step
Next compressor rps is lower than current rps
E
