12.3 C: TUNING
584 SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
■ C5-50 Notch Filter Frequency
No.
(Hex.)
Name Description
Default
(Range)
C5-50
(0B14)
Expert
Notch Filter Frequency
Sets the machine resonance frequency.
0 Hz
(0, or 2 to 100 Hz)
Machine resonance can cause high-frequency noise and vibration during operation. A notch filter can help prevent
the noise and vibration. Notch filters set the resonant frequency of the machine to remove specific vibrational
frequency components caused by machine resonance.
Note:
• Correctly set the value for the notch filter frequency. If the frequency value is too low in regards to the speed loop response frequency,
it could have an effect on the speed control functionality. Set the frequency to be a minimum of 4 times the speed loop response
frequency.
• Set this parameter to 0 Hz to disable the notch filter.
■ C5-51 Notch Filter Bandwidth
No.
(Hex.)
Name Description
Default
(Range)
C5-51
(0B15)
Expert
Notch Filter Bandwidth
Sets the notch width of the notch filter.
1.0
(0.5 - 5.0)
◆ C6: DUTY AND CARRIER
C6 parameters are used to set the selection of drive duty rating, selection of carrier frequency, and upper and
lower limits of carrier frequencies.
■ C6-01 ND/HD Duty Selection
No.
(Hex.)
Name Description
Default
(Range)
C6-01
(0223)
ND/HD Duty Selection
Sets the drive duty rating.
0
(0, 1)
0 : HD Rating
The overload tolerance is 150% of the rated output current for 60 seconds.
1 : ND Rating
The overload tolerance is 110% of the rated output current for 60 seconds.
There are two types of load ratings for this product depending on the load characteristics of the application: Heavy
Duty Rating (HD) and Normal Duty Rating (ND).
The drive rated output current, overload tolerance, and acceleration stall prevention level change when the duty
rating changes. Set the drive to agree with the duty rating of the selected drive capacity. In HD, the tolerance is
150% overload for 60 seconds. In ND, the tolerance is 110% overload for 60 seconds. The rated output current for
ND drives is higher than the rated output current for HD drives. Refer to“Model Specifications (400 V Class)” for
more information about rated output current.
Note:
This product has two more load characteristic types: HD2 and ND2. When the value of E1-01 [Input AC Supply Voltage] is 460 Vor
more, the load characteristic level automatically changes from HD1 to HD2 or from ND1 to ND2.
Table 12.20 Differences between Heavy Duty Rating and Normal Duty Rating
Item Heavy Duty Rating 1 (HD1) Heavy Duty Rating 2 (HD2) Normal Duty Rating 1 (ND1) Normal Duty Rating 2 (ND2)
E1-01 Setting 380 V ≤ E1-01 < 460 V 460 V ≤ E1-01 < 480 V 380 V ≤ E1-01 < 460 V 460 V ≤ E1-01 < 480 V
C6-01 Setting 0 1
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