LSIS LSLV0055H100-4COFN - Page 344

Learning Protection Features
330
Group
Code
Name
LCD Display
Parameter Setting
Setting range
Unit
frequency at speed
command loss
frequency–
Max.
frequency
15
Analog input loss
decision level
AI Lost Level
0
Half of x1
-
OUT
31
–35
Multi-function
Relay 1–5
Relay 1–5
13
Lost
Command
-
-
36
Multi-function
output 1
Q1 Define
Speed Command Loss Setting Details
Code
Description
PRT-11 Lost KPD
Mode
Set the operation command source to keypad. If there is a
communication error with the keypad or connection problem between
the keypad and the inverter, select the inverter‘s operation.
Setting
Function
0
None
The speed command immediately becomes the
operation frequency without any protection function.
1
Warning
Select 24: Lost keypad from OUT-31–36, one of the
multi function terminal blocks, outputs a relevant
warning signal when abnormal operating conditions
arise.
2
Free-Run
The inverter blocks output. The motor performs in
free-run condition.
3
Dec
The motor decelerates and then stops at the time
set at PRT-07 (Trip Dec Time).
PRT-12 Lost Cmd
Mode
In situations when speed commands are lost, the inverter can be
configured to operate in a specific mode:
Setting
Function
0
None
The speed command immediately becomes the
operation frequency without any protection function.
1
Free-Run
The inverter blocks output. The motor performs in
free-run condition.
2
Dec
The motor decelerates and then stops at the time
set at PRT-07 (Trip Dec Time).
3
Hold Input
The inverter calculates the average input value for
10 seconds before the loss of the speed command
and uses it as the speed reference.