4-153
11-Auxiliary Function Group
11- 00
Direction Lock Selection
Range
【0】:
Allow forward and reverse rotation
【1】: Only allow forward rotation
【2】: Only allow reverse rotation
. If the motor operation direction is set to 1 or 2, then the motor can only operate
according to the specified direction rather than acceptting the operation command for
opposite rotation.
. Forward or reversal command can be controlled by the control terminal, LED digital
control panel.
. This parameter can be used to the pump and fan of the reversal motor.
11- 01
Carrier frequency
Range
【0】:
carrier output frequency tuning
【1】: Retain
【2~16】KHz
1 when 11-01= 2 to 16, carrier frequency of PWM output is in KHz.
2 when 11-01=0, it allows setting detail through 11-30~11-32
3 For SLV and SV mode, the minimum value of 11-01 is set to 4
4 Setting range is determined by the inverter capacity 13-00 and HD/NDmode (00-27).
For low-carrier, the motor noise increases, but the noise generated by RFI and EMI
decreases, and the leakage current reduces. Please refer to the carrier frequency
impacts shown in Table 4.3.14.
Table 4.3.14 Carrier frequency impacts
Carrier frequency (11-01=2 to 16))
2KHz--6K--10K--16KHz
Motor noise
big ------------------ small
waveform of the output current
bad----good-------- bad
Inerface noise
small------------------- big
Lakage current
low--------------------- high
‧Setting range and factory setting are depended on the capacity of the inverter.
Please refer to section 3 for the basic specification of factory setting and the
maximum optional parameter limit of this parameter.
‧The inverter with lower capacity can use relative high carrier frequency. Please
refer to section 3 for lowering the rated curve.
‧Lowering set value can reduce motor losses and motor temperature; on the
contrary, it will increase motor losses and motor temperature.
‧If the wire between the inverter and the motor is too long, the high-frequency
leakage current will cause the increase of inverter output current, which might affect
the peripheral device. To avoid this situation, adjust the carrier frequency shown in
table 4.3.15.
.
Table 4.3.15 Wire length and carrier frequency
Wire length < 30 Meter
30 Meter – 50
Meter
50 Meter -100
Meter
> 100 Meter
Carrier frequency
(11-01 Setting value )
Maximum value
16KHz
(11-01=14KHz)
Maximum value
10KHz
(11-01=10KHz)
Maximum value
5KHz
(11-01=5KHz)
Maximum
value 2KHz
(11-01=2KHz)
‧If the torque does not match the speed, please reduce the carrier frequency.
‧When the V / F and V / F + PG control modes are used, the carrier frequency will be
determined by parameters set by 11-30 (the maximum limit of the carrier
frequency), 11-31 (the lowest limit of the carrier frequency) and 11-32 (proportional
gain of the carrier frequency ) and so on.
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