Description of Function Codes
MD380 User Manual
- 148 -
Function Code Parameter Name Setting Range Default
F0-16
Carrier frequency adjusted with
temperature
0: No
1: Yes
1
It is used to set whether the carrier frequency is adjusted based on the temperature. The
AC drive automatically reduces the carrier frequency when detecting that the heatsink
temperature is high. The AC drive resumes the carrier frequency to the set value when the
heatsink temperature becomes normal. This function reduces the overheat alarms.
Function Code Parameter Name Setting Range Default
F0-17 Acceleration time 1
±V)
±V)
±V)
Model
dependent
F0-18 Deceleration time 1
±V)
±V)
±V)
Model
dependent
Acceleration time indicates the time required by the AC drive to accelerate from 0 Hz to
"Acceleration/Deceleration base frequency" (F0-25), that is, t1 in Figure 6-2.
Deceleration time indicates the time required by the AC drive to decelerate from
"Acceleration/Deceleration base frequency" (F0-25) to 0 Hz, that is, t2 in Figure 6-2.
Figure 6-2 Acceleration/Deceleration time
Time (t)
2XWSXWIUHTXHQF\
(Hz)
Frequency reference
Acceleration/Deceleration
base frequency
t1
t2
Set deceleration time
Actual acceleration time
Actual deceleration time
Set acceleration time
The MD380 provides totally four groups of acceleration/deceleration time for selection. You
can perform switchover by using a DI terminal.
Group 1: F0-17, F0-18
Group 2: F8-03, F8-04
Group 3: F8-05, F8-06
Group 4: F8-07, F8-08
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