Toshiba Tosvert VF-A5 User Manual

,- ,-,
1_11- • ,-,- (Protection Parameters)
1- I 1- f I f 1-11- I
=··= ,_ , ,_,,- =··-
::=::::::::::====~
Trip function selections
'
I I
l=I 1-11 1- I
_,_ ,_, ·-··= =··-
,-,I_ I I_ - 1- I
,_,,_ ,_ ,_, ,_ ,_
Related parameters
!St[
'
Stall protection
IStL
Stall protection level
IUF'SL
Undervoltage trip selection
IUF't
Undervoltage detection time
ILL F'
Low current detection selection
ILL F't
Low current detection time
ILL F'[
Low current detection level lt,-CL
Fault trip saving
IC:t SL
Overtorque trip selection
IC:tL
Overtorque trip level
E658UYI b
The stall protection, undervoltage trip, low current detection and overtorque trip functions can be selectively
enabled/disabled.
Parameter
Standard
Function When set to
I
setting
I
ScC
I
n
Stall protection ON.
Stall
protection OFF.
I
w
UF'SL
r'I
Undervoltage trip disabled.
Undervoltage
trip enabled.
w
LL F'
,-,
Low current trip disabled.
Low current trip enabled.
LI
Cle SL
r'I
Overtorque trip disabled. Overtorque trip enabled.
LI
* By setting the fault trip saving function It,- CL I. when a trip occurs, whether or not the trip will be
maintained or cleared when the inverter is powered
OFF can be selected.
A low current condition is detected when the inverter output current is less than the
low current detection
level IL :_ F' C I for a duration exceeding the low current
detection time I:_ :_ F' •'= I .
,-,,-' ,-
,_, ,_ ,_ =• Output short circuit detection selection
This parameter allows the selection of the method for detecting an output short circuit, dependent upon the
motor and usage conditions.
[I [ L S set to [I : Standard···Detection is executed upon start-up.
QC LS set to : : For high-speed motor use···Because a high-speed motor's inductance is small, the
detection method is altered to prevent nuisance trips.
[I [ L S set to 2 : For positioning···Detection is performed during initialization after power is turned ON.
This is used to improve positioning accuracy during JOG, because the
positioning
will deviate with the output short-circuit check pulses.
[I [ L S set to 3 : For high-speed motor positioning
*This function only changes the method for evaluating an overcurrent trip. Overcurrent protection will still
always be in effect.
- 85 -

Toshiba Tosvert VF-A5 Specifications

General

Brand	Toshiba
Model	Tosvert VF-A5
Category	Inverter
Language	English