8-9-2
Automatic Carrier Frequency Reduction
Use this function to reduce the carrier frequency automatically as the output current and the cooling fin
temperature increase.
Parameter No. Function name Data
Default da-
ta
Unit
301FHex-42Hex
Carrier Frequency Automatic
Reduction Function Selection
0: Disable
1: Enable
1 -
Related function Carrier Frequency (3004Hex-1BHex)
• When this function is enabled, overheating or overload trips sometimes can be avoided.
8-9-3
Starting Frequency and Stop Frequency
Set the frequency for starting inverter output when the RUN signal is turned ON, and the frequency for
stopping the inverter output when the RUN signal is turned OFF.
Starting frequency
• During V/f control (Drive Control Selection (3004Hex-2BHex/3009Hex-0FHex) = 0, 3)
When the inverter operation is started, the output frequency starts from the starting frequency. Set
the starting frequency to enable securing suf
ficient starting torque. It is also possible to set the Start-
ing Frequency Holding Time (3004Hex-19Hex/3009Hex-3FHex).
• During vector control (Drive Control Selection (3004Hex-2BHex/3009Hex-0FHex) = 1, 4, 5, 6, 15,
16)
When the inverter is started, the speed starts from zero, and acceleration is performed up to the
starting frequency in accordance with the set acceleration time and acceleration pattern. After the
starting frequency holding time has elapsed, acceleration is again performed to the frequency in-
structed in accordance with the acceleration time.
Parameter No. Function name Data
Default da-
ta
Unit
3004Hex-18Hex 1st Starting Frequency 0.0 to 60.0 0.5 Hz
3004Hex-19Hex
1st Starting Frequency 1 Hold-
ing Time
0.00 to 10.00
0.00
s
3009Hex-0DHex 2nd Starting Frequency 0.0 to 60.0 0.5 Hz
3009Hex-3FHex
2nd Starting Frequency Holding
Time
0.00 to 10.00 0.00
s
Stop Frequency
• During V/f control (Drive Control Selection (3004Hex-2BHex/3009Hex-0FHex) = 0, 3)
The inverter output is cut off at the time the output frequency reaches the stop frequency
.
It is also possible to set the stop frequency (holding time).
• During vector control (Drive Control Selection (3004Hex-2BHex/3009Hex-0FHex) = 1, 4, 5, 6, 15,
16)
The speed detection value/speed estimated value or the speed command reaches the stop frequen-
cy, and the stop frequency holding time elapses, and then inverter output is cut off.
8 Other Functions
8-100
M1 Series EtherCAT Type User’s Manual (I670)
To Next Page
Loading...
Need help?
General