Yaskawa G5HHP Drive User Manual
Page 300
User Constants
8.2.7 Protection Constants: L
8 - 34
Constant
Number
Page
Control Methods
Change
during
Opera-
tion
Factory
Setting
Setting
Range
Description
Name
Constant
Number
Page
Flux
Vector
Open
Loop
Vector
V/f
with
PG
V/f
Change
during
Opera-
tion
Factory
Setting
Setting
Range
Description
Display
L2-04
Voltage recovery time
Sets the time required to return to
normal voltage at the completion of
a speed search, in units of one sec-
ond.
;
Set the time required for a 400 V
0.0 to
0 3
x
A
A
A
A
7 87
L2-04
PwrL V/F Ramp t
;
Set the time required for a 400-V
class Inverter to recover from 0
V to 400 VAC.
(For the 575-V class Inverter, the
time from 0 V to 575 VAC.)
0.0 to
5.0
0.3
x
A
A
A
A
7 - 87
L2-05
Undervoltage detec-
tion level
Sets the main circuit under voltage
(UV) detection level (main circuit
DC voltage) in V units.
;
Usually setting is not necessary.
300 to
420
380
*2
x
A
A
A
A
7 - 87
L2 05
PUV Det Level
;
Usually setting is not necessary.
Insert an AC reactor to lower the
main circuit undervoltage detec-
tion level.
420
*2
*2
x
A
A
A
A
7 - 87
L2-06
KEB deceleration rate
Restores the operating conditions
for momentary power loss by ap-
plying a frequency deceleration to
0.0 to
0 0
x
A
A
A
A
7 87
L2-06
KEB Frequency
plying a frequency deceleration to
create inertia energy when a power
loss occurs, and thus avoid the
power loss.
0.0 to
100.0
0.0
x
A
A
A
A
7 - 87
* 1. The factory setting depends upon the Inverter capacity. The values for a 400-V class Inverter of 200 kW will be displayed. See
page 8 - 42.
* 2. These are values for a 400-V class Inverter. Multiply the value by approx. 1.5 for a 575-V class Inverter.
8