6-110
• This
function detects changes in the main circuit’
s DC voltage which indicate a power supply phase
loss, large imbalance in the power supply voltage, or deterioration of the main circuit condenser.
Setting Function
0 Disabled.
1
Enabled. (Detects input power supply phase loss, 3-phase imbalance, or deterioration of the
main circuit condenser.)
Parameter Display name Setting Units Default
Valid access levels
number
range setting
V/f
Control
V/f with
PG
Open Loop
Vector
Flux
Vector
L8-07 Ph Loss Out Sel 0 or 1 --- 0 Advanced
Note This parameter cannot be changed during operation.
• This function detects an Inverter output phase loss.
Setting Function
0 Disabled.
1 Enabled. (Detects an output phase loss at under 5% of the Inverter’s rated output current.)
• False
phase loss detections may occur
when the motor
’
s capacity is small compared to the capacity of
the Inverter. In this case, disable the detection function by setting L8-07 to 0.
Parameter Display name Setting Units Default
Valid access levels
number
range setting
V/f
Control
V/f with
PG
Open Loop
Vector
Flux
Vector
L8-10 Ground Fault Sel 0 or 1 --- 1 Advanced
Settings
Setting Function
0 Disabled. (No ground fault is protected.)
1 Enabled. (The ground fault is protected.)
• The ground fault protective function can be enabled or disabled with the parameter.
• The
default setting does not normally need to be changed. Set the parameter to
0 if the output power
cable
is as long as or longer than 100 m or the
stray capacitance of the output cable is excessively high
and the ground fault protective function operates by mistake.
Parameter Display name Setting Units Default
Valid access levels
number
range setting
V/f
Control
V/f with
PG
Open Loop
Vector
Flux
Vector
L8-17 L-Spd IGBD Prlcl 0 to 3 --- 1 Advanced Not ap-
plicable.
Parameter Display name Setting Units Default
Valid access levels
number
range setting
V/f
Control
V/f with
PG
Open Loop
Vector
Flux
Vector
L8-19 OL2 Chara@L-
Spd
0 or 1 --- 0 Advanced
• The inverter overload (OL2) characteristics can be set according to the application.
• Set
parameter L8-17 to 0 and parameter L8-10 to 1 if the motor has metal friction noise (or to increase
the carrier frequency).
Advanced Operation Chapter
6
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