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Chapter 3
Preparing for Operation
• 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
Operation
Stall
Prevention
Time
Time
Output
frequency
Output
frequency
The output frequency is controlled to a
level to enable the Inverter to continue
operating the motor without stalling.
Time
n073
Setting range
The output frequency is controlled to a
level to enable the Inverter to continue
operating the motor without stalling.
Time
Frequency Detection Level
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
Setting range
n075
Setting range
n076
Setting range
Overtorque Detection Function Selection
0 to 4
Unit
---
Default setting
0
Overtorque Detection Level
30 to 200
Unit
% (Rated output Default setting
current ratio)
160
Overtorque Detection Time
0.1 to 10.0
Unit
s
Default setting
0.1
3-87