YASKAWA VARISPEED-616G5 Instruction Manual page 296

User Constants
8.2.7 Protection Constants: L
Constant C
Number
OL2 characteristics
selection at low
speeds
L8-19
OL2 Chara@ L-Spd
8
Name
Description
Display
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 L8-17 to 1 and L8-19 to 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.
Change Change
Setting S Factory during
Opera-
Range Setting
tion
0, 1 0*
×
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Control Methods
V/f
Page
Open
Flux
V/f with
Loop
Vector
Vector
PG
A A A A
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