LSIS G100, Operation Manual

Page: 201 / 343

6.2.4 Speed Command Loss
When setting operation speed using an analog input at the terminal block,
communication options, or the keypad, speed command loss setting can be used to
select the inverter operation for situations when the speed command is lost due to the
disconnection of signal cables.
Group Code Name Setting
Setting
Range
Unit
Pr
12
Motion at speed command
loss
1 Free-Run - -
13
Time to determine speed
command loss
1.0 0.1
–120
sec
14
Operation frequency at speed
command loss
0.00
Start
frequency
–
Max.
frequency
Hz
15
Analog input loss decision
level
0 Half of x1 -
OU
31 Multi-function relay 1 item
13
Lost
Command
- -
33 Multi-function relay 2 item
Speed Command Loss Setting Details
Code and
Features
Description
Pr.12 Lost Cmd
Mode
In situations when speed commands are lost, the inverter can be
configured to operate in a specific mode.
Configuration 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 Pr.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.
4
Hold
Output
The inverter calculates the average output
value for 10 seconds before the loss of the
speed command and uses it as the speed
reference.
5 Lost The inverter operates at the frequency set at