Protection parameter group 06
PARAMETER DESCRIPTION 194
5.7.17 Capacitor lifetime detection
Capacitors on main circuit may age and its capacity may reduce. This function is to detect capacitor service life in
main circuit and serve as a replacement standard.
Parameter
Name
Default Setting Range
Content
06-24
P.708
Capacitor lifetime
detection
0
0,1
(3，7，8，9)
0: Off
1: When power is OFF, start to detect the lifetime of
capacitor on main circuit. After detection is finished and
power on this parameter value will change to 3.
06-25
P.709
Capacitor lifetime
detection level
100.0%
0～100.0%
Percentage of detection capacitance value and factory
detection value
06-26
P.710
Capacitor lifetime
detection result
Read
only
0
Normal.
1
Electrolytic capacitor abnormal.(less than 80% capacity
compared to test in factory)
Capacitor lifetime detection
Detect the aging degree of the capacitance of the main circuit.
06-24
Content
Remarks
0
No capacitor lifetime detection.
Initial value.
1
Start to detect.
When the power is OFF, start to detect the lifetime of
capacitor on main circuit.
3
Capacitor lifetime detection is finished.
Read only
7
Control mode is not correct cannot detected（Not
in V/F mode）
8
detection process is forced to end（B，F，H）
9
An error occurs during the detection process（A，
C，G，E）
Detection percentage of capacitance life 06-25(P.709) is
theoretical calculation result and can only be used as a
reference.
Capacitance tested in factory is 100.0%, if detection result 06-25(P.709) is less than 80%, then 06-26(P.710)=”1”.
Digital output terminals can also output alarm signal
(set 03-10~03-13(P.40,P.85，P.129~P.130),03-42~03-57(P.568~P.583) to 20).
Detection steps are as follows:
1.
Check motor is connected.
2.
When inverter is stop set 06-24(P.708) to 1 and cut off the power.
3.
Inverter applies DC voltage to motor to measure capacitor capacity while inverter is OFF.
4.
After power indicator is OFF, turn ON the power again.
5.
Check that "3" is written in 06-24(P.708), read 06-25(P.709) to check aging degree of the main circuit
capacitor.
Setting
