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Hardware Protection: L8
User parameters for hardware protection functions are shown in the following table.
Parameter
Number
Internal
Dynamic
Braking
Resistor
L8-01
Protection
Selection
DB Resistor
Prot
Overheat
Alarm Level
L8-02
OH Pre-
Alarm Lvl
Overheat
Pre-Alarm
Operation
L8-03
Selection
OH Pre-
Alarm Sel
Input Phase
Loss
Protection
L8-05
Selection
Ph Loss In
Sel
Output Phase
Loss
Protection
L8-07
Ph Loss Out
Sel
Output
Ground Fault
Detection
L8-09
Selection
Ground Fault
Sel
-72
5
Name
Description
Display
Selects the DB protection
only when using 3% duty
cycle heatsink mount
Yaskawa braking resistor.
This parameter does not
enable or disable the DB
function of the Drive.
0: Not Provided
1: Provided
When the cooling fin
temperature exceeds the value
set in this parameter, an
Overheat Alarm (OH) will
occur.
Selects the Drive operation
upon an OH pre-alarm
detection.
0: Ramp to Stop
1: Coast to Stop
2: Fast-Stop
3: Alarm Only
Selects the detection of input
current phase loss, power
supply voltage imbalance, or
main circuit electrostatic
capacitor deterioration.
0: Disabled
1: Enabled
Selects the detection method
for output phase loss.
When applied motor capacity
is too small for Drive
capacity, output phase loss
may be detected
inadvertently. In this case, set
to 0.
0: Disabled
1: Single Phase Loss
Detection
2: 2/3-phase Loss Detection
Enables and disables the
Drive's output ground fault
detection.
0: Disabled
1: Enabled
Control Methods
Change
Setting
Factory
V/f
during
Range
Setting
V/f
with
Operation
PG
0 to 1
0
No
A
A
50
95 C*
to
No
A
A
130
0 to 3
3
No
A
A
0 to 1
0
No
A
A
0 to 2
0
No
A
A
0 to 1
1
No
A
A
Open
Open
MODBUS
Loop
Flux
Loop
Register
Vector
Vector
Vector
1
2
A
A
A
4ADH
A
A
A
4AEH
A
A
A
4AFH
A
A
A
4B1H
A
A
A
4B3H
A
A
A
4B5H
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