Yaskawa Matrix Converter - Manual (Page 215)

6
-50
• Undertorque Detection
‹ Changing Overtorque and Undertorque Detection Levels Using an Ana-
log Input
If parameter H3-09 (Terminal A2 Function Selection) or H3-05 (Terminal A3 Function Selection) is set to 7
(overtorque/undertorque detection level), the overtorque/undertorque detection level can be changed.
If the overtorque/undertorque detection level is changed using the multi-function analog input, only over-
torque/undertorque detection level 1 will be enabled.
The following diagram shows the overtorque/undertorque detection level using an analog input.
Fig 6.38 Overtorque/Undertorque Detection Level Using an Analog Input
Multi-Function Analog Input (H3-05, H3-09)
Set
Value
Function Contents (100%)
Control Methods
V/f
Open
Loop
Vector
Flux
Vector
7 Overtorque/undertorque detection level
Motor rated torque for vector control
MxC rated output current for V/f control
Yes Yes Yes
*
on on
Motor current (output torque)
Undertorque detection 1 NO
or Undertorque detection 2 NO
L6-03
or
L6-06 L6-03
or
L6-06
The undertorque detection disabled margin is approximately 10% of the MxC rated output
current (or motor rated torque)
L6-02 or L6-05
Detection level
Multi-function analog input
terminal A2, A3 input level
(4 mA) (20 mA)
100%
0 10 V