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8 Applied Settings
High-function General-purpose Inverter RX2 Series User’s Manual
8-3 Pro
tect
ive Fu
nct
ions
8
8-3
-9 Ove
rspeed Err
or Dete
ction
The over-speed error detection function judges that the speed is excessive if the feedback speed
exceeds the over-speed level.
This function operates when other than “0.0” is specified for [bb-80] Over-speed error detection level.
The overspeed is detected by the feedback frequencies displayed on [dA-08] speed detection monitor.
When the speed has exceeded [bb-80] Over-speed error detection level and [bb-81] Over-speed error
detection time has elapsed, it is judged as an over-speed error.
When an over-speed error occurs, the inverter trips with [E107] Over-speed error.
Precautions for Correct Use
To use this function, speed feedback by the encoder is required.
Parameter
8-3-9
Overspeed Error Detection
Item
Parameter
Data
Description
Default
data
Over speed detection
level
[bb-80]
0.0 to 150.0(%)
Set the overspeed level at 100% to which
the maximum frequency is set.
135.0
Over speed detection
time
[bb-81]
0.0 to 5.0(s)
Sets the time to judge the speed to be an
error after it has excessively increased. The
inverter trips with [E107] Over-speed error.
0.5
Speed detection value
monitor
[dA-08]
-590.00 to
590.00(Hz)
Displays the data obtained through encoder
feedback.
-
bb -80
0
bb -81
bb -81
Speed
The inverter trips due to an over-speed error.
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