Delta VFD1A6ME21ANNAA User Manual

Chapter 12 Description of Parameter SettingsME300
12.1-00-7
Load Selection
Default: 1
Settings 0: Normal load
1: Heavy load
 Normal duty: over-load rated output current 150% in 3 seconds (120%, 1 minute).
Refer to Pr.00-17 for the setting for the carrier wave. Refer to Pr.00-01 or the specification table
for the rated current.
 Heavy duty: over-load rated output current 200% in 3 seconds (150%, 1 minute).
Refer to Pr.00-17 for the setting for the carrier wave. Refer to Pr.00-01 or the specification table
for the rated current.
 Pr.00-01 varies with the setting value for Pr.00-16. The default value and maximum for Pr.06-03
and Pr.06-04 also vary with the setting value of Pr.00-16.
 In Normal Duty, the default setting of Pr.06-03 and Pr.06-04 is 120%, and the maximum is 150%.
However, if DC voltage is higher than 700 V
DC
(460V series) or 350 V
DC
(230V series), then the
maximum is 145%.
 In Heavy Duty, the default setting of Pr.06-03 and Pr.06-04 is 180%, and the maximum is 200%.
However, if DC voltage is higher than 700 V
DC
(460V series) or 350 V
DC
(230V series), then the
maximum is 165%.
Carrier Frequency
Default: 4
Settings Normal load: 2–15 KHz
Heavy load: 2–15 KHz
 This parameter determines the PWM carrier frequency for the AC motor drive.
Series 230V 460V
Models
1–15 HP
[0.75–11 kW]
20–30 HP
[15–37 kW]
1–20 HP
[0.75–15 kW]
25–40 HP
[18.5–55 kW]
Settings Range 02–15 kHz 02–10 kHz 02–15 kHz 02–10 kHz
Normal Duty
Default
4 kHz
Heavy Duty
Default
4 kHz
 From the table, you see that the PWM carrier frequency has significant influences on the
electromagnetic noise, the AC motor drive heat dissipation, and the motor acoustic noise.
Therefore, if the surrounding noise is greater than the motor noise, lower the carrier frequency to
reduce the temperature rise. Although the motor has quiet operation in the higher carrier
frequency, consider the entire wiring and interference.
 When the carrier frequency is higher than the default, decrease the carrier frequency to protect
the drive. Refer to Pr.06-55 for related setting and details.

Delta VFD1A6ME21ANNAA Specifications

General

Brand	Delta
Model	VFD1A6ME21ANNAA
Category	DC Drives
Language	English