Contents

•Timing Charts
Fig 5.43 and Fig 5.44 show the timing charts for overtorque and undertorque detection.
Motor current (output torque)
L6-02 or L6-05
Overtorque detection 1 NO
or overtorque detection 2 NO
L6-03 or
L6-06
L6-03 or
L6-06
*Overtorque detection switch off bandwidth is approximately 10% of the Inverter rated output current
(or motor rated torque).
Motor current (output torque)
Fig 5.43 Overtorque Detection
L6-02 or L6-05
Undertorque detection 1 NO
or undertorque detection 2 NO
L6-03 or
L6-06
L6-03 or
L6-06
*Undertorque detection switch off bandwidth is approximately 10% of the Inverter rated output
current (or motor rated torque).
Fig 5.44 Undertorque Detection
•Car Stuck Detection (OL3, Using Overtorque detection)
The Overtorque detection function can be used to detect a stuck car. The torque detection function 1 can be
used for this. Therefore a digital output has to be programmed for “Overtorque detection 1” (H2- = B or
17). Using this with the factory setting car stuck is detected (output is switched) torque/current is higher than
150% for 10 sec. The level can be adjusted in L6-02, the time in L6-03. The output is switched of and an OL3
fault will be indicated (see Fig 5.45)
speed
Inverter enable (D/I)
Up/Down (D/I)
Selected Speed (D/I)
Fault
DC Injection/
zero servo
Torque is higher
than L6-02
Fig 5.45 Car Stuck fault detection
detect. time
L6-03
5-36