Chapter 12 Descriptions of Parameter SettingsC2000 Plus
12.1-07-12
07-21
Automatic Energy-Saving Selection
Default: 0
Settings 0: Disabled
1: Power factor energy-saving improvement (for VF, SVC and VFPG control
modes)
2: Automatic energy-saving (AES) optimization (for VF, SVC and VFPG
control modes)
Different control modes for Pr.07-21:
Motor Induction Motor (IM)
Permanent Magnet
Synchronous Motor (PM)
Synchronous
Reluctance
Motor (SynRM)
Control Mode VF VFPG SVC FOCPG FOC
PM
SVC
FOCPG
PM
PM
FOC
HFI
1: Power factor
energy-saving
improvement
✓ ✓ ✓
2: Automatic
energy-saving
optimization
✓ ✓ ✓
Power factor energy-saving improvement (Pr.07-21=1):
When the automatic energy-saving function is enabled, the drive runs with full-voltage during
acceleration and deceleration, and runs with the optimal voltage that is automatically
calculated by the load power during constant operation. It is not recommended to use this
function for applications that require frequent load changes or when the load is close to full-
load during operation.
The prerequisites for valid power factor energy-saving improvement (Pr.07-21=1) are:
A. Power factor angle is larger than Pr.07-43 (Targeted Power Factor Angle for AES)
B. Output frequency is larger than Pr.07-41 (Minimum Frequency for AES)
C. The drive is in a steady-state output frequency status
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