YASKAWA F7 Programming Manual page 124

L1-02 Motor Overload Protection Time
Setting Range: 0.1 to 20.0 Minutes
Factory Default: 8.0 Minutes
The L1-02 parameter will set the allowed operation time before the OL1 fault will occur when the Drive is running at 60 Hz
and 133% of the motor's full load amp rating (E2-01). Adjusting the value of L1-02 can shift the set of OL1 curves up the Y-
axis of the diagram below but will not change the shape of the curves.
Fig. 82 Motor Overload Protection Time based on Output frequency and Load
L1-03 Motor Overheat Alarm Operation Selection
Setting
0 Ramp to Stop
1 Coast to Stop
2 Fast-Stop
3 Alarm Only (factory default)
L1-04 Motor Overheat Fault Operation Selection
Setting
0 Ramp to Stop
1 Coast to Stop (factory default)
2 Fast-Stop
L1-05 Motor Temperature Input Filter Time
Setting Range: 0.00 to 10.00 Seconds
Factory Default: 0.20 Seconds
The Drive can be programmed to accept a PTC (Positive Temperature Coefficient) Thermistor input for monitoring motor tem-
perature. By setting parameter H3-09= "E: Motor Temperature", and attaching the PTC thermistor per the figure below, the
Drive can react to the increasing motor winding temperature with both an alarm (L1-03) and a fault (L1-04).
10Hz
60Hz
10
8
6
4
2
E2-01 125%
Output Current
(Percent of motor FLA)
Description
Description
Programming 116
150% 175% 200%