3-87
• The
parameters n071 and n072 are used to lower the output frequency to levels to enable the Inverter
to continue operating the motor without stalling.
• Set
with n071 and n072 current levels in 1% units based on the rated output current as 100% to enable
the acceleration and operation stall prevention functions to work.
Acceleration Stall Prevention Operation Stall Prevention
Operation
Stall
Prevention
Time
Time
The output frequency is controlled to a
level to enable the Inverter to continue
operating the motor without stalling.
Output
frequency
Time
Time
The output frequency is controlled to a
level to enable the Inverter to continue
operating the motor without stalling.
Output
frequency
Operation
Stall
Prevention
n073 Frequency Detection Level
Setting range 0.0 to 400.0 Unit Hz Default setting 0.0
• The parameter n073 is used to detect the output frequency.
• The
Inverter will output a signal as a multi-function contact output while the output frequency is higher
than, lower than, or the same as the frequency set with n073.
• Set n040 and n041 (i.e., multi-function contact output selection):
To
3 to permit the Inverter to output a
signal while the output frequency is the same as the frequency
set with n073.
To
4 to permit the Inverter to output a signal while the output frequency is the same as or lower than
the frequency set with n073.
To
5
to permit the Inverter to output a signal while the output frequency is the same as or higher than
the frequency set with n073. Refer to
page 3-76
.
n074 Overtorque Detection Function Selection
Setting range 0 to 4 Unit --- Default setting 0
n075 Overtorque Detection Level
Setting range 30 to 200 Unit % (Rated output
current ratio)
Default setting 160
n076 Overtorque Detection Time
Setting range 0.1 to 10.0 Unit s Default setting 0.1
Preparing for Operation Chapter 3
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