YASKAWA CIMR-JB Series, Installation & Start-Up Manual

Page: 210 / 287

A.1 Heavy Duty and Normal Duty Ratings
The capacity of the drive is based on two types of load characteristics: Heavy Duty (HD) and
Normal Duty (ND).
Refer to Selecting the Appropriate Load Rating on page 210 for the differences between
HD and ND. Specifications for capacity ratings are listed on the following pages.
Table A.1 Selecting the Appropriate Load Rating
Setting
Parameter
C6-01
Rated Output Current Overload Tolerance
Default Carrier
Frequency
0: Heavy Duty
HD Rating
varies by model
<1>
150% rated output current for 60 s
8/10 kHz
varies by model
1: Normal Duty
(default)
ND Rating
varies by model
<1>
120% rated output current for 60 s
varies by model
2 kHz, Swing PWM
<1> The following pages list information on rating changes based on drive model.
TERMS TERMS
• HD and ND : HD refers to applications requiring constant torque output,
while ND refers to applications with variable torque needs. The drive allows
the user to select HD or ND torque depending on the application. Fans,
pumps, and blowers should use ND (C6-01 = 1), and other applications
generally use HD (C6-01 = 0).
• Swing PWM : Swing PWM equivalent to a 2 kHz audible noise. This
function turns the motor noise into a less obtrusive white noise.
Note: Differences between HD ratings and ND ratings for the drive include rated input and output current,
overload capacity, carrier frequency, and current limit. The default setting is for ND (C6-01 = 1).
A.1 Heavy Duty and Normal Duty Ratings
210 YASKAWA ELECTRIC TOEP C710606 25D YASKAWA AC Drive J1000 Installation & Start-Up Manual