Yaskawa Matrix Converter - Manual (Page 213)

6
-48
‹ Detecting Motor Torque
If an excessive load is placed on the machinery (overtorque) or the load is suddenly lightened (undertorque),
an alarm signal is output to multi-function output terminal M1-M2, P1-PC, P2-PC, P3-C3, or P4-C4.
To use the overtorque/undertorque detection function, set B, 17, 18, 19 (overtorque/undertorque detection NO/
NC) in one of the following parameters: H2-01 to H2-05 (Terminals M1-M2, P1-PC, P2-PC, P3-C3, and P4-
C4 Function Selection).
The overtorque/undertorque detection level is the current level (MxC rated output current 100%) in V/f con-
trol, and the motor torque (motor rated torque 100%) in vector control.
„ Related Parameters
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control Methods
Display V/f
Open
Loop
Vector
Flux
Vector
L6-01
Torque Detection
Selection 1 0: Overtorque/undertorque detection dis-
abled.
1: Overtorque detection only with speed
agreement; operation continues after over-
torque (warning).
2: Overtorque detected continuously during
operation; operation continues after over-
torque (warning).
3: Overtorque detection only with speed
agreement; output stopped upon detection
(protected operation).
4: Overtorque detected continuously during
operation; output stopped upon detection
(protected operation).
5: Undertorque detection only with speed
agreement; operation continues after over-
torque (warning).
6: Undertorque detected continuously dur-
ing operation; operation continues after
overtorque (warning).
7: Undertorque detection only with speed
agreement; output stopped upon detection
(protected operation).
8: Undertorque detected continuously dur-
ing operation; output stopped upon detec-
tion (protected operation).
0 to 8 0 No A A A
Torq Det 1 Sel
L6-02
Torque Detection
Level 1 Open Loop Vector Control: Motor rated
torque is set as 100%.
V/f Control: MxC rated current is set as
100%.
0 to 300 150% No A A A
Torq Det 1 Lvl
L6-03
Torque Detection
Time 1
Sets the overtorque/undertorque detection
time in 1-second units. 0.0 to
10.0
0.1 s No A A A
Torq Det 1 Time
L6-04
Torque Detection
Selection 2
Multi-function output for overtorque detec-
tion 1 is output to multi-function contact out-
put when overtorque detection 1 NO or
overtorque detection 1 NC is selected.
Multi-function output for overtorque detec-
tion 2 is output to multi-function contact out-
put when overtorque detection 2 NO or
overtorque detection 2 NC is selected.
0 to 8 0 No A A A
Torq Det 2 Sel
L6-05
Torque Detection
Level 2
0 to
300
150% No A A A
Torq Det 2 Lvl
L6-06
Torque Detection
Time 2
0.0 to
10.0
0.1 s No A A A
Torq Det 2 Time