5
-44
Hardware Protection 2: L9
User constants for hardware protection 2 functions are shown in the following table.
* Values for a 6 kV Class Inverter are double.
Constant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control
Methods
MEMOBUS
Register
Open-
loop
Vector
Flux
Vector
Display
L9-01
Main power supply
input voltage
Set the Inverter main input voltage
in 1 volt. (Transformer primary
side)
This setting is used as a reference
value in protection functions.
2700 to
3630
*
3300V
*
No
A
A
5A0H
Main Input Volt
L9-02
Operation when power
supply overvoltage is
detected
Select the action to be taken when
power supply overvoltage (IOV) is
detected.
0: Detection disabled
1: Coast to a stop (fault)
2: Continue operation (alarm)
Applicable to software versions
S0104 or later.
0 to 2
1
No
A
A
5A1H
IOV Select
L9-03
Power supply over-
voltage detection time
Set the time for power supply
overvoltage (IOV) detection in
units of 0.01s.
Power supply overvoltage (IOV)
is detected when the power supply
exceeds 120% of the value set in
L9-01 for the period of time set in
L9-03.
Applicable to software versions
S0104 or later.
0.00 to
2.00
0.05 s
No
A
A
5A2H
IOV Time
L9-06
Output overvoltage
detection level
Set the output overvoltage detec-
tion level in 0.1% units.
[100%: Maximum motor voltage
(E1-05)]
110.0
to
120.0
120%
No
A
A
5A5H
OUTPUT OV Lvl
L9-07
Output overvoltage
detection time
Used to set the output overvoltage
detection time in 0.01-seconds
units.
Any output voltage above the L9-
06 set level that continues for the
time set in L9-07 is detected.
0 to
2.00
1.00s
No
A
A
5A6H
OV Time
L9-14
Control power supply
fault (terminal 20)
detection selection
Select the control power supply
(terminal 20 input) fault detection.
0: Detection disabled
1: Detection enabled
0 or 1
0
No
A
A
5ADH
Term20 Det Sel
L9-20
Selection of operation
when ground fault is
detected on output side
Select the operation when soft-
ware detects output ground fault.
0: Detection disabled
1: Coast to a stop (fault)
2: Continue operation (alarm)
0 to 2
1
No
A
A
5B3H
OGF Select
L9-21
Output ground fault
detection level
Set the software output ground
fault detection level in units of
0.1%.
(100%: Voltage class)
(3-kV class: 3300V, 6-kV class:
6600V)
0.0 to
100.0
5.0%
No
A
A
5B4H
Output OGF Lvl
L9-22
Output ground fault
detection time
Set the time for software output
ground fault detection in units of
0.001 second.
The output ground fault (OGF) is
detected when the total of output
voltage of three phases exceeds
the level set in L9-21 for the time
set in L9-22 or longer.
0.001
to
2.000
0.200 s
No
A
A
5B5H
OGF Time
