Energy Saving: B8; Zero Servo: B9 - YASKAWA VARISPEED-616G5 Instruction Manual

User Constants
8.2.1 Application Constants: b
Constant C
Number
Energy-saving gain
b8 01 b8-01
Energy Save Gain
Energy-saving fre-
quency
b8 02 b8-02
Energy Save Freq
C Constant
Number
Zero-servo gain
b9 01 b9-01
Zero Servo Gain
8
Zero-servo comple-
tion width
b9-02 b9 02
Zero Servo Count

Energy Saving: b8

J
Name
Description
Display
Sets the Inverter output voltage
when the energy-saving command
is input.
:Enabled when the energy-sav- :Enabled when the "energy-sav-
ing mode" command is set for
multi-function input. Set as a
percentage of the V/f pattern
voltage.
Sets the energy-saving effective
range minimum frequency in Hz.
:The energy-saving function is
only enabled when the frequen- only enabled when the frequen-
cy is greater than the energy-
saving frequency and the
speeds are consistent.

Zero Servo: b9

J
Name
Description
Display
Used to adjust the strength of the
zero-servo lock.
:Enabled when the "zero-servo
command" is set for the multi-
function input. When the zero-
servo command has been input
and the frequency reference and the frequency reference
drops below excitation level
(b2-01), a position control loop
is created and the motor stops.
Increasing the zero-servo gain
in turn increases the strength of
the lock. Increasing it by too
much will cause oscillation.
Sets the output width of the P-lock
completion signal.
:Enabled when the "zero-servo
completion (end)" is set for a
multi-function input. The zero-
servo completion signal is ON
when the current position is
within the range (the zero-servo within the range (the zero-servo
position + zero-servo comple-
tion width.)
Set the allowable position dis-
placement from the zero-servo
position to 4 times the pulse
rate of the PG (pulse generator,
encoder) in use.
Change Change
Setting S Factory during
Opera-
Range Setting
tion
0 to 100 0 to 100 80 80
× ×
0.0 to
0.0 0.0
× ×
400 0 400.0
Change Change
Setting S Factory during
Opera-
Range Setting
tion
0 to 100 0 to 100 5 5
× ×
0 to
10 10
× ×
16383 16383
8 - 10
Control Methods
V/f
Page
Open
Flux
V/f with
Loop
Vector
Vector
PG
7 13 7 - 13
A A A A
× × × ×
7 - 38
7 - 13
A A A A
× × × ×
7 38 7 - 38
Control Methods
V/f
Page
Open
Flux
V/f with
Loop
Vector
Vector
PG
A A
7 19 7 - 19
× × × × × ×
A A 7 19 7 - 19
× × × × × ×