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5 | Electrical connection
5.3 Circuit diagram for direct start 400 V Y
0
QA1
D
GB
F
E
Fig. 9
BT1
BT4
FC1
FC2
BP1 / BP2 High pressure safety monitor / Safety chain (high/low pressure monitoring )
QA1
QA2
EC1
SF1
16 | AQ452531257528en-000201
1
L1
L2
L3
N
PE
Cold conductor (PTC sensor) motor winding
Release switch (thermostat)
Protection switch motor power circuit
Control power circuit fuse
Main switch
Compressor contactor
Compressor motor
Control voltage switch
2
FC1
I>
I>
I>
1
3
5
QA2
2
4
6
X SS
1
2
3
M
3~
-EC1
Θ
BT1
Klemmenkasten
Compressor
terminal box
Verdichter
© Danfoss | Climate Solutions | 2023.06
3
PTC
PTC
Auswertung
external
extern
evaluation
U1:1
2
PE
4
5
4
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