88
4. Parameter description
Parameter
•
When the carrier frequency is increasing, the rated current of the inverter will decrease in order to
prevent the inverter being too hot and prolong the using life of IGBT, so it is necessary to take the
protective measure. When the carrier frequency is 8 kHZ or smaller than it, the rated current of the
inverter is 100%. The rated current of the inverter will decrease with the carrier frequency is
increasing, and it will accelerate the heat accumulating in order to protect the inverter. The relation
curve of the carrier frequency and the rated current is as figure below:
100%
90%
80%
70%
60%
50%
40%
2kHz
4kHz
6kHz
8kHz
10kHz 12kHz 14kHz 16kHz
The carrier ferquency
The rated current
Note: 1. The optimum carrier frequency shall be over 8 times greater than the target frequency.
2. When selected sensorless vector control (P.300=3), the carrier frequency can set to 2kHz, 6kHz, 10kHz,
14kHz. If the setting value is less 6kHz, the carrier frequency is 2kHz; If the setting value is less than
10kHz, the carrier frequency is 6kHz; If the setting value is less than 14kHz, the carrier frequency is
10kHz; If the setting value is more than 14kHz, the carrier frequency is 14kHz.
4.32 Stop or Reset Function Selection (P.75)
P.75 “Stop or reset function selection”
Parameter
Factory setting
Setting range
Remarks
75
1
0, 1
---
<Setting>
• When P.75=0, it is only suitable for PU mode and H2 mode (combined mode 2). Pressing
STOP
RESET
during running is used to stop the motor. Only at trouble state, we can press
STOP
RESET
for 1.0s to reset
the inverter, and then the inverter will show the power on state.
• When P.75=1, it is only suitable for the mode chosen. Pressing
STOP
RESET
during running is used to stop
the motor. Only at trouble state, we can press
STOP
RESET
for 1.0s to reset the inverter, and then the
inverter will show the power on state.
