Protection Control
According to the current limit of direct current
Existing DC power limit
requirement.
Limited
OR
15 seconds
No DC power limit
requirement continuously
for 3 minutes.
57
Not limited
Inverter upper limit frequency:
1-step down from current
compressor frequency
•
10 seconds
Matching
•
frequency
Current step maintained
Inverter upper limit frequency:
1-step up from current
compressor frequency
Compressor stopped
OR
•
No DC power limit requirement.
Compressor upper limit : Maximum frequency
•
Existing DC power
limit requirement.
Without conditions
SiUS331708EA
Functions and Control