User`s manual

76
Overtorque Detection Function Chapter 6-4
6-4 Overtorque Detection Function
When an excessive load is applied to the equipment, the Inverter detects the
overtorque condition through an increase in the output current.
Set Values
• Set n60 for overtorque detection level and n61 for overtorque detection
time to enable the overtorque detection function. The Inverter will detect
overtorque when the current the same as or higher than the detection
level is output for the preset detection time.
• Set n40 for multi-function output to either of the following so that external
overtorque detection output will be ON.
Set Value: 6 for overtorque detection (NO)
Set Value: 7 for overtorque detection (NC)
n59 Overtorque Detection Function Selection Changes during
operation
No
Setting
range
0 to 4 Unit of
setting
1 Default setting 0
Value Description
0 Inverter does not monitor overtorque.
1 Inverter monitors overtorque only when speed is matched. It continues operation (issues warning) even
after overtorque is detected.
2 Inverter monitors overtorque only when speed is matched. It discontinues operation (through protective
function) when overtorque is detected.
3 Inverter always monitors overtorque during operation. It continues operation (issues warning) even after
overtorque is detected.
4 Inverter always monitors overtorque during operation. It discontinues operation (through protective
function) when overtorque is detected.
n60 Overtorque Detection Level Changes during
operation
No
Setting
range
30 to 200 (%) Unit of
setting
1% Default setting 160
n61
Overtorque detection time
Overtorque Detection
Output
current
Overtorque
detection (NO)
See note.
n60 (Overtorque
detection level)
Time
Time
ON
Note Overtorque detection will be canceled if the output current decreases from the detection level
by approximately 5% of the Inverter rated current.