YASKAWA Z1000 Quick Start Manual page 55

C6-02
3
4
5
7
8
Note: Swing PWM uses a carrier frequency of 2.0 kHz as a base, then applies a special PWM pattern to reduce the audible noise.
Guidelines for Carrier Frequency Parameter Setup
Speed and torque are unstable at low speeds
Noise from the drive affects peripheral devices
Excessive leakage current from the drive
Wiring between the drive and motor is too long
Audible motor noise is too loud
<1> The carrier frequency may need to be lowered if the motor cable is too long. Refer to the following table.
Wiring Distance
Recommended setting value for C6-02
Note: The maximum cable length is 100 m when using OLV/PM (A1-02 = 5).
n
d1-01 to d1-04, d1-16, and d1-17: Frequency References 1 to 4, HAND Frequency Reference 1,
and Jog Frequency Reference
The drive lets the user switch between up to 5 preset frequency references during run (including the Jog reference) through
the digital input terminals. The drive uses the acceleration and deceleration times that have been selected when switching
between each frequency reference.
The Jog frequency overrides all other frequency references and must be selected by a separate digital input.
The multi-speed references 1 and 2 can be provided by analog inputs.
No.
d1-01 to d1-04
d1-16
d1-17
<1> The upper limit is determined by the maximum output frequency (E1-04) and upper limit for the frequency reference (d2-01).
<2> Setting units are determined by parameter o1-03. The default is "Hz" (o1-03 = 0).
Multi-Step Speed Selection
To use several speed references for a multi-step speed sequence, set the H1-oo parameters to 3 and 4. To assign the Jog
reference to a digital input, set H1-oo to 6.
Notes on using analog inputs as Multi-Speed 1 and 2:
• The first frequency reference (Multi-Speed 1) comes from the source specified in b1-01. When using an analog input terminal
to supply the frequency reference, assign the frequency reference source to the control terminals (b1-01 = 1).
• When an analog input is set to "Auxiliary frequency 1" (H3-02 or H2-06 = 2), the value set to this input will be used as the
Multi-Step Speed 2 instead of the value set to parameter d1-02. If no analog inputs are set for "Auxiliary frequency 1", then
d1-02 becomes the reference for Multi-Step Speed 2.
Select the different speed references as shown in
Frequency Reference 1 (set in b1-01)
Frequency Reference 2
(d1-02 or input terminal A1, A2)
YASKAWA ELECTRIC TOEP C710616 54A YASKAWA AC Drive - Z1000 Quick Start Guide
Carrier Frequency
8.0 kHz
10.0 kHz
12.5 kHz
Swing PWM 1
Swing PWM 2
Symptom
<1>
Up to 50 m
1 to F (up to 12.5 kHz)
Parameter Name
Frequency Reference 1 to 4
HAND Frequency Reference 1
Jog Frequency Reference
Table
Table i.26 Multi-Step Speed Reference and Terminal Switch Combinations
Reference
i.5 Start-Up Programming and Operation
C6-02
9
A
B to E
F
Lower the carrier frequency.
Increase the carrier frequency or use Swing PWM.
Up to 100 m
1 to 2 (up to 5 kHz),
7 (Swing PWM)
0.00 to 240.00 Hz
0.00 to 240.00 Hz
0.00 to 240.00 Hz
i.26. Figure i.53 illustrates the multi-step speed selection.
Multi-Step Speed
H1-oo = 3
OFF
ON
Carrier Frequency
Swing PWM 3
Swing PWM 4
No setting possible
User defined
Remedy
Greater than 100 m
1 (up to 2 kHz), 7 (Swing PWM)
Setting Range
<1> <2>
<1> <2>
<1> <2>
Multi-Step Speed 2 Jog Reference
H1-oo = 4 H1-oo = 6
OFF
OFF
Default
<2>
0.00 Hz
<2>
0.00 Hz
<2>
6.00 Hz
OFF
OFF
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