Mode HD Rating ND Duty Rating
Characteristics
100 %
100 %
0 Motor Speed
Rated Load
Overload
150 %
Motor Speed
0
100 %
100 %
120 %
Rated Load
Overload
Application
Use HD Rating is designed applications
requiring a high overload tolerance with
constant load torque, like conveyors.
Use ND Rating for applications in which the
torque requirements drop along with the speed.
Examples include fans or pumps where a high
overload tolerance is not required.
Overload capability
(oL2)
100% continuous, 150% of drive rated current
for 60 s
100% continuous, 120% of drive rated current
for 60 s
C6-02
1 : 2.0 kHz
2 : 5.0 kHz
3 : 8.0 kHz
4 : 10.0 kHz
5 : 12.5 kHz
6 : 15.0 kHz
7: Swing PWM
F : User defined (C3-03 to C3-05)
1 : 2.0 kHz
2 : 5.0 kHz
3 : 8.0 kHz
4 : 10.0 kHz
5 : 12.5 kHz
6 : 15.0 kHz
7: Swing PWM
F : User defined (C3-03 to C3-05)
L3-02 Stall
Prevention during
Acceleration
150% 120%
L3-06 Stall
Prevention during
Run
150% 120%
Note: By selecting HD/ND, motor parameter E2 is changed to the value for the maximum applicable motor.
Note: Swing PWM uses 2.0 kHz carrier frequency as a base. The application of special PWM patterns keeps the
audible noise of the motor low.
n
Carrier Frequency Selection: C6-02
Fixed Carrier Frequencies
The carrier frequency can be set using parameter C6-02 as shown in table below.
4.5 Basic Operation
94
YASKAWA ELECTRIC TOEP C710606 25B YASKAWA AC Drive J1000 Installation & Start-Up Manual
2/6/2008-14:44
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