Yaskawa CIMR-AU 200V Drives - Manual (Page 248)

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 the following table for the differences between HD and ND.
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 2 kHz
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> Refer to Power Ratings on page 249 for 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
248 YASKAWA ELECTRIC TOEP C710616 41E YASKAWA AC Drive - A1000 Quick Start Guide