B8: Energy Saving - YASKAWA E1000 Technical Manual

5.2 b: Application
4: CFM (Cubic ft/min)
5: CMH (Cubic M/h)
6: LPH (Liters/h)
7: LPS (Liters/s)
8: Bar (Bar)
9: Pa (Pascal)
10: C (Deg Celsius)
11: Mtr (Meters)
12: Ft (Feet)
13: LPN (Liters/min)
14: CMM (Cubic M/min)
■
b5-47: Reverse Operation Selection 2 by PI Output
Determines whether a negative PI output reverses the direction of drive operation. When the PI function is used to trim
the frequency reference (b5-01 = 3 or 4), this parameter has no effect and the PI output will not be limited (same as b5-11
= 1).
No.
b5-47
Setting 0: Reverse Disabled
Negative PI output will be limited to 0 and the drive output will be stopped.
Setting 1: Reverse Enabled
Negative PI output will cause the drive to run in the opposite direction.

◆ b8: Energy Saving

The Energy Saving feature improves overall system operating efficiency by operating the motor at its most efficient
level.
Note: 1. Energy Saving is not designed for applications that experience instantaneous heavy loads or applications that rarely operate with light
load conditions.
2. Energy Saving is mainly designed for applications with variable torque but is not appropriate for applications where the load may
suddenly increase.
3. As the performance of the Energy Saving function strongly depends on the accuracy of the motor data, always perform Auto-Tuning
and make sure the motor data has been entered correctly before using this function.
■
b8-01: Energy Saving Control Selection
Enables or disables the Energy Saving function.
No.
b8-01
Setting 0: Disabled
Setting 1: Enabled
■
b8-04: Energy Saving Coefficient Value (V/f)
Parameter b8-04 is used to fine-tune Energy Saving control. The default setting depends on the capacity of the drive.
Adjust this setting while viewing the output power monitor (U1-08) and running the drive with a light load.
A low setting results in less output voltage and less energy consumption, but too small a value will cause the motor to
stall.
No.
b8-04
Note: This default value changes if the motor rated capacity set to E2-11 is changed. The Energy Saving coefficient is set automatically
when Auto-Tuning for Energy Saving is performed
158
Name
Reverse Operation Selection 2 by PI Output
Parameter Name
Energy Saving Control Selection
Name
Energy Saving Coefficient Value
(Refer to Auto-Tuning on page
YASKAWA ELECTRIC SIEP C710616 35D YASKAWA AC Drive E1000 Technical Manual
Setting Range
0 or 1
Setting Range
0 or 1
Setting Range
0.00 to 655.00
113).
Default
0
Default
Determined by A1-02
Default
Determined by
E2-11, and o2-04