TECO F510 series - Page 268

4-179
10% hystersis
width
Inverter output current
( or motor output torque)
Detection level (08-15)
Overtorque
detection
signal
t
t
08-1608-16
Figure 4.4.63 Over-torque detection operation
Low-torque detection
Parameter 08-18 selects low-torque detection function. An low-torque condition is detected when the
output current / torque falls below the level set in parameter 08-19 (low-torque detection level) for the time
specified in parameter 08-20 (Low-torque detection time).
08-17=0: Low-torque detection is disabled.
08-17=1: Low-torque detection is enabled when the output frequency reaches the set frequency.
08-17=2: Low-torque detection is enabled during running.
Parameter 08-18 selects the way the inverter acts when an over-torque condition is detected.
08-18=0: When a low-torque condition is detected the inverter displays and low-torque detection fault and
the motor decelerates to a stop.
08-18=1: When a low-torque condition is detected the inverter displays a low-torque detection alarm and
continues to run.
08-18=2: When a low-torque condition is detected the inverter displays and low-torque detection fault and
the motor coasts to a stop.
Figure 4.4.64 Low torque detection operation
Over and low torque detection condition can be output to the multi-function digital outputs (R1A-R1C,
R2A-R2C, R3A-R3C) by setting parameters 03-11, 03-12 and 03-39 to 12 or 25. Refer to Fig. 4.4.65 for
more information.