YASKAWA CIMR-G5A 2015 - Page 296

User Constants
8.2.7 Protection Constants: L
8-42
C
Name
S
Change
Control Methods
Constant
Number
Display
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
V/f
V/f
with
PG
Open
Loop
Vector
Flux
Vector
Page
L8-19
OL2 characteristics
selection at low
speeds
0: OL2 characteristics at low
speeds disabled.
1: OL2 characteristics at low
speeds enabled.
:If using OL2 to trip at low
speeds (less than 6 Hz) even
though the load is light, set
L8
-
17
to
1
and
L8
-
19
to
0
0, 1 0*
×
A A A A
7-96
OL2 Chara@ L-Spd
L8
-
17
t
o
1
an
d
L8
-
19
t
o
0
.
However, do not set L8-17 or
L8-19 to 0 when using V/f and
open-loop vector control.
Do not set L8-19 to 0 when us-
ing a 400 V class (185 to 300
kW) Inverter.
* Reduce the carrier frequency selection (C6-01) to 2 kHz when operating continuously at low speeds with
heavy loads when using flux vector control.
8