Daikin Super Multi Plus D-Series - Inverter Protection Control

SiEBE18-526 Protection Control
Function 71
4.4 Inverter Protection Control
Inverter current protection control and inverter fin temperature control are performed to prevent
tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase.
Inverter overcurrent protection control
Inverter fin temperature control
Not limited
Limited
Inverter current ≥ 24.9A
&
&
"
INV upper limit frequency:
1-step down from current
compressor frequency
INV upper limit frequency:
1-step up from current
compressor frequency
Inverter current
standby
Inverter current ≤ 23.8A
continues for 3 min.
Status quo
Without conditions
(V3178)
Inverter current>23.8A
• Inverter current≤23.8A
•
INV upper limit frequency
Inverter current>23.8A
• 10 sec.
• Matching of frequency
• When occurring 3 times within 60 min.,
the malfunction code "L8" is output.
• When occurring 3 times within 30 min.,
the malfunction code "L9" is output
Not limited
Limited
Tfin≥93°C
Tfin≥93°C
Tfin≥99°C
Fin temp. standby
&
INV upper limit frequency:
1-step down from current
compressor frequency
&
Tfin≤90°C
continues for 3 min.
INV upper limit frequency:
1-step up from current
compressor frequency
Status quo
Without conditions
(Q0377)
• Tfin≤90°C
• INV upper limit frequency
• 10 sec.
• Matching of frequency
• When occurring 3 times within 60 min.,
the malfunction code "L4" is output.