When a part is replaced, it is necessary to clear or replace the data at Main Circuit Capacitor Service
Life Coefficient (Measurement Value) (H42) and Main Circuit Capacitor Service Life Coef
ficient (Initial
Value) (H47).
Reference capacity measurement procedure
1. Change Protection/Maintenance Function Mode Selection (H98) to user measurement value
standard (bit 3 = 1).
2. Stop the inverter.
3. Set the inverter to a state when the power supply is cut off during normal operation.
4. Set Main Circuit Capacitor Service Life Coefficient (Measurement Value) (H42) and Main Circuit
Capacitor Service Life Coefficient (Initial Value) (H47) to 0000, respectively.
5. Cut off the power supply to the inverter (the operation described below is executed automatically
when the power is cut off).
Measure the discharge time of the main circuit capacitor and save it to Main Circuit Capacitor
Service Life Coefficient (Initial Value) (H47).
The measurement conditions for main circuit capacitor are detected automatically, and the condi-
tions are saved.
The LED during measurement displays “____.”
6. Turn ON the inverter power supply again.
Make sure Main Circuit Capacitor Service Life Coefficient (Measurement Value) (H42) and Main
Circuit Capacitor Service Life Coefficient (Initial Value) (H47) are correct.
Move to menu number 5 “Maintenance Information” in the program mode, and make sure the per-
centage (%) of capacitance of the main circuit capacitor is 100%.
If measurement fails, 0001 is set respectively at Main Circuit Capacitor Service Life Coefficient
(Measurement Value) (H42) and Main Circuit Capacitor Service Life Coefficient (Initial Value)
(H47). Remove the cause of the failure and perform measurement again.
If the conditions described above are satisfied when the power supply is cut off the next time, the
discharge time of the main circuit capacitor is measured automatically. Periodically move to menu
number 5 “Maintenance Information” in the program mode, and check the percentage (%) of ca-
pacitance of the main circuit capacitor.
• A large measurement error may occur in the measurement method described above. If life estima-
tion is performed in this mode, return the judgment standard for the service life of the main circuit
capacitor in Protection/Maintenance Function Mode Selection (H98) to the factory default standard,
perform the measurement again under the factory default conditions, and check the service life.
7-8-11
Braking Transistor Broken (DBAL)
Use this signal to determine the life expectancy of the internal capacitor based on the inverter’s inter-
nal temperature, conduction time, and the capacity of the capacitor
.
When bit 6 = 1 at Protection/Maintenance Function Mode Selection (H98), an error in the built-in brak-
ing transistor is detected, the inverter is topped, and the braking transistor error (alarm code: dba) is
displayed.
When bit 6 = 0 at Protection/Maintenance Function Mode Selection (H98), the braking transistor is not
used and an alarm does not occur.
7 Other Functions
7-98
M1 Series Standard Type User's Manual (I669)
To Next Page
Loading...
Need help?
General
