L8-03: Overheat Pre-Alarm Selection

The drive ramps the motor to stop in the deceleration time. The output terminal set for Fault [H2-01 to H2-03 = E] activates.

The output turns off and the motor coasts to stop. The output terminal set for Fault [H2-01 to H2-03 = E] activates.

The drive stops the motor in the deceleration time set in C1-09 [Fast Stop Time]. The output terminal set for Fault [H2-01 to H2-03 = E] activates.

The keypad shows oH and the drive continues operation. The output terminal set for Alarm [H2-01 to H2-03 = 10] activates.

The drive decelerates to the level set in L8-19 [Freq Reduction @ oH Pre-Alarm] and continues operation. oH flashes on the keypad.

If the overheat pre-alarm is still ON after 10 s, the drive decelerates again. When the alarm is output, the drive decelerates each 10 seconds. If the drive decelerates 10 times and the alarm continues to be output, the output terminal set for oH Pre-Alarm Reduction Limit [H2-01 to H2-03 = 4D] activates. When the alarm is not output during deceleration, the drive accelerates until it is at the frequency reference that was applicable before the alarm was turned off. Figure 1 shows the output of the alarm and the drive operation at a decreased output frequency.