gefran VDI100-3110-KBX-4

11 - Auxiliary Parameters
Code Parameter Name / Range
11-00 Direction Lock Selection
0: Allow forward and reverse rotation
1: Only allow forward rotation
2: Only allow reverse rotation
If motor operation direction is set to 1 or 2, the motor can only operate in that specic direction. Run commands
in the opposite direction are not accepted.
Forward or reverse commands can be issued via the control terminals or keypad.
Note: The Direction Lock Selection can be used in fan and pump application where reverse rotation is prohibited.
Code Parameter Name / Range
11-01 Carrier frequency
0: Carrier Output Frequency Tuning
1: 1KHz
2~16: 2~16kHz
Notes:
(1) Selections 1 to 16 in kHz.
(2) When 11-01=0, variable carrier frequency is used see parameter 11-30~11-32.
(3) For SLV and SV mode, the minimum value of 11-01 is 4 kHz.
(4) Setting range is determined by the inverter rating (13-00) and HD/ND mode (00-27).
(5) Refer to section 3 inverter derating based on carrier frequency.
(6) A low carrier frequency increases motor noise but reduces motor losses and temperature.
(7) A low carrier frequency decreases RFI, EMI interference and motor leakage current.
Refer to the carrier frequency Table 4.4.14.
Table4.4.14Carrierfrequencysettings
Carrier frequency (11-01=2 to 16)) 2KHz--6K--10K--16kHz
Motor noise High -------------------- Low
Output current waveform Fair --------------------- Better
Noise interference Low---------------------high
Leakage current Low---------------------high
If cable length between the inverter and the motor is too long, the high-frequency leakage current will cause an
increase in inverter output current, which might affect peripheral devices. Adjust the carrier frequency to avoid
this as shown in table 4.4.15.
Table4.4.15Cablelengthandcarrierfrequency
Wire length < 30 Meter (98ft) up to 50 Meter
(164 ft)
up to 100 Meter
(328ft)
> 100 Meter*
> 328ft
Carrier frequency
(11-01 value )
Max. value 16kHz
(11-01=16kHz)
Max. value 10KHz
(11-01=10KHz)
Maxi. value 5KHz
(11-01=5KHz)
Max. value 2KHz
(11-01=2KHz)
*. If Cable is longer than 200m, the output dv/dt lter or output reactor is required.
Notes:
(1) Reduce the carrier frequency if the torque does not match the speed.
(2) In V/f and V/f + PG control modes, the carrier frequency is determined by parameters 11-30 (Carrier fre-
quency max. limit), 11-31 (Carrier frequency lower limit) and 11-32 (Carrier frequency proportional gain).
Code Parameter Name / Range
11-02 Soft PWM Function Selection
224 VDI100 • Instruction manual