YASKAWA Varispeed G7 Instruction Manual page 177

Torque Detection: L6
User constants for the torque detection function are shown in the following table.
Con-
stant
Number
Overtorque/
Under-
torque
detection
selection 1
L6-01
Torq Det 1
Sel
Overtorque/
Under-
torque
detection
L6-02
level 1
Torq Det 1
Lvl
Overtorque/
Under-
torque
detection
L6-03
time 1
Torq Det 1
Time
-64
5
Name
Description
Display
0: Overtorque/undertorque
detection disabled.
1: Overtorque detection only
with speed agreement;
operation continues after
overtorque (warning).
2: Overtorque detected
continuously during
operation; operation
continues after overtorque
(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
overtorque (warning).
6: Undertorque detected
continuously during
operation; operation
continues after overtorque
(warning).
7: Undertorque detection only
with speed agreement;
output stopped upon
detection (protected
operation).
8: Undertorque detected
continuously during
operation; output stopped
upon detection (protected
operation).
Open-loop vector control:
Motor rated torque is set as
100%.
V/f control: Inverter rated cur-
rent is set as 100%.
Sets the overtorque/under-
torque detection time in 1-sec-
ond units.
Control Methods
Change
Setting Factory during
Range Setting Opera-
V/f with
tion
0 to 8 0 No A
0 to
150% No A
300
0.0 to
0.1 s No A
10.0
MEMO-
Open Open
BUS
V/f Loop Flux Loop
Regis-
Vec- Vec- Vec-
ter
PG tor tor tor
1 2
A A A A 4A1H
A A A A 4A2H
A A A A 4A3H
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