Delta VFD040C43A-21 User Manual

Chapter 12 Descriptions of Parameter SettingsC2000 Plus
12.1-07-13
D. Time for steady-state output frequency is larger than Pr.07-42 (Delay Time for AES)
E. Output current is smaller than or equal to 90% of the drive’s rated current
 The prerequisites for invalid power factor energy-saving improvement (Pr.07-21=1) are:
1. A changing output frequency
2. Output current is larger than 90% of the drive’s rated current
 Automatic energy-saving optimization (Pr.07-21=2):
 Controls the output voltage to minimize the motor’s losses for optimal energy-saving. The
motor’s losses are calculated by motor parameter auto-tuning and energy-saving coefficient.
 Automatic energy-saving optimization control is according to the block diagram below:
 The prerequisites for valid automatic energy-saving optimization (Pr.07-21=2) are:
A. Output frequency is larger than Pr.07-41 (Minimum Frequency for AES)
B. The drive is in a steady-state output frequency status
C. Time for steady-state output frequency is larger than Pr.07-42 (Delay Time for AES)

Delta VFD040C43A-21 Specifications

General

Brand	Delta
Model	VFD040C43A-21
Category	DC Drives
Language	English