4-76
Carrier Frequency auto reduction due to temperature rise
Range
0
:Disable
1
:Enable
When inverter (heatsink) temperature rises above 80°C the Carrier Frequency is reduced by 4K.
When the temperature falls below less than 70°C, Carrier Frequency (PAR 11-01) is reset to
default.
Temperature can be displayed by setting parameter 12-00=04000.
70℃
80℃
t1
t2
T0
Temperature
Carrier
Frequency
10K
4K
t1
t2
T
0
0.0 ~ 4.0
s
Use S Curve parameters where a smooth acceleration or deceleration action is required,
this will prevent possible damage to driven machines by sudden acceleration/deceleration.
S1
S2
S3
S4
RUN command
Actual
output
frequency
RUN
T
Note:
Regardless of the stall prevention period, actual acceleration and deceleration time =preset