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146
Operation setting at fault occurrence
4.13.4 Overspeed protection (Pr. 374)
The drive unit outputs can be shut off in case of overspeed.
Parameter
Number
Name
Initial Value
Setting Range
Description
374
Overspeed detection level
3450r/min
0 to 12000r/min /
0 to 8000r/min
If the motor speed exceeds the speed
set in
Pr. 374
, overspeed (E.OS) occurs,
and the drive unit outputs are stopped.
The above parameters can be set when
Pr. 160 Extended function display selection
= "0."
The value left of the slash is for the 2.2K drive unit or lower. The one right of the slash is for the 3.7K drive unit.
If a value exceeding the upper speed limit of the motor is set, the actual operation will be limited at the maximum rotation speed. The setting range is for
the S-PM motor. The maximum setting value differs depending on the number of poles of the applied motor.
ALM
Motor speed
Time
E.OS
Coasts to stop
ON
Pr. 374
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