YASKAWA Varispeed G7 Series Instruction Manual page 289

L6-01 and L6-04 Set Values and LCD Indications
The relationship between alarms displayed by the Digital Operator when overtorque or undertorque is
detected, and the set values in L6-01 and L6-04, is shown in the following table.
Set
Value
0
1
2
3
4
5
6
7
8
Setting Example
The following diagram shows the time chart for overtorque and undertorque detection.
Overtorque Detection
•
Overtorque detection 1 NO
or overtorque detection 2 NO
-56
6
Overtorque/undertorque detection disabled.
Overtorque detection only with speed matching; operation continues after
overtorque (warning).
Overtorque detected continuously during operation; operation continues
after overtorque (warning).
Overtorque detection only with speed matching; output stopped upon detec-
tion (protected operation).
Overtorque detected continuously during operation; output stopped upon
detection (protected operation).
Undertorque detection only with speed matching; operation continues after
overtorque (warning).
Undertorque detected continuously during operation; operation continues
after overtorque (warning).
Undertorque detection only with speed matching; output stopped upon
detection (protected operation).
Undertorque detected continuously during operation; output stopped upon
detection (protected operation).
Motor current (output torque)
L6-02 or L6-05
L6-03 or
L6-06
* Overtorque detection disabled band is approximately 10% of the Inverter rated output
current (or motor rated torque).
Function
*
L6-03 or
L6-06
ON
LCD Indications
Overtorque/ Overtorque/
Undertorque Undertorque
Detection 1 Detection 2
– –
OL3 flashes OL4 flashes
OL3 flashes OL4 flashes
OL3 lit OL4 lit
OL3 lit OL4 lit
UL3 flashes UL4 flashes
UL3 flashes UL4 flashes
UL3 lit UL4 lit
UL3 lit UL4 lit
*
ON