User Constant Tables
5-43
Hardware Protection 1: L8
User constants for hardware protection functions are shown in the following table.
Constant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Operation
Control
Methods
MEMOBUS
Register
Open-
loop
Vector
Flux
Vector
Display
L8-07
Output open-phase
protection selection
0: Disabled
1: Enabled
2: Enabled
Output open-phase is detected
at less than 5% of Inverter rated
current.
When applied motor capacity is
small for Inverter capacity, out-
put open-phase may be
detected inadvertently or open-
phase may not be detected. In
this case, set to 0.
0 to 2 2 No A A 576H
Ph Loss Out Sel
L8-08
Output open-phase
detection level
• In the case of L8-07=1
At the time of output current
>5% and output frequency
≥1.0Hz, the output current of
either U, V or W is less than
L8-08, and when it continues
500 ms or more, it is
detected as output open-
phase.
• In the case of L8-07=2
At the time of output fre-
quency ≥1.0 Hz, all the out-
put current of U, V and W is
less than L8-08, and when it
continues 500 ms or more, it
is detected as output open-
phase.
The count at 500 ms is a UP/
DOWN counter.
0.0 to
20.0
3.0% No A A 577H
Ph Loss Out Lvl
L8-19
Soft CLA selection
0: Disable (Gain is set to 0)
1: Enable
0 or 1 1 No A A 582H
Soft CLA Sel
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