Protection Control
According to the current limit of direct current
Existing DC power limit
requirement.
Limited
10 seconds
•
•
Matching
OR
frequency
15 seconds
No DC power limit
requirement continuously
for 3 minutes.
122
Not limited
Compressor stopped
OR
Inverter upper limit frequency:
1-step down from current
compressor frequency
Current step maintained
Inverter upper limit frequency:
1-step up from current
compressor frequency
No DC power limit requirement.
•
•
Compressor upper limit : Maximum frequency
Existing DC power
limit requirement.
Without conditions
SiUS281811EA
Part 4 Functions and Control