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Chapter 12. Protective functions
12.3 Stall prevention
Group
LED
Display
Parameter Name
Set
value
Min/Max
setting
Factory
default
Unit
F59
[Stall prevention select]
-
0/7 3
Function
group 1
F60
[Stall prevention level]
-
30/150 150 %
I54
[Multi-function output
terminal select]
7 12
I/O group
I55
[Multi-function relay
select]
7
0/17
17
During acceleration: Motor acceleration is stopped when current exceeding the value set in F60
flows.
During constant run: Motor decelerates when current exceeding the value set in F60 flows.
During deceleration: Motor deceleration is stopped when inverter DC link voltage rises above a
certain voltage level.
F60: The value is set as the percent of motor rated current (H33).
I54, I55: Inverter outputs signals through multi-function output terminal (MO) or relay output (30AC)
when stall prevention function is activated. Stall prevention operation can be monitored by external
sequence.
F59: Stall prevention can be set as the table below.
During
Deceleration
During
constant
speed
During
Acceleration
Setting
Bit 2 Bit 1 Bit 0
0 - - -
1 - -
9
2 -
9
-
3 -
9 9
4
9
- -
5
9
-
9
6
9 9
-
F59 [Stall
prevention
select]
7
9 9 9
For example, set F59 to 3 to make stall prevention active during Acceleration
and constant run.
When stall prevention is executed during acceleration or deceleration,
Accel/Decel time may take longer than the user-setting time.
When stall prevention is activated during constant run, t1, t2 executed in
accordance with the value set in ACC - [Accel time] and dEC - [Decel time].
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