2.9 L: Protection Functions
398 YASKAWA TOEPYAIGA5002A GA500 DRIVE PROGRAMMING
0 : Ramp to Stop
The drive ramps the motor to stop in the deceleration time. The output terminal set for Fault [H2-01 to H2-03 = E]
activates.
1 : Coast to Stop
The output turns off and the motor coasts to stop. The output terminal set for Fault [H2-01 to H2-03 = E] activates.
2 : Fast Stop (Use C1-09)
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.
3 : Alarm Only
The keypad shows oH and the drive continues operation. The output terminal set for Alarm [H2-01 to H2-03 = 10]
activates.
4 : Operate at Reduced Speed (L8-19)
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 2.122 shows the output of the alarm and the drive operation at a decreased output frequency.
Figure 2.122 Drive Operation at a Decreased Output Frequency when the Overheat Alarm is Output
■ L8-05: Input Phase Loss Protection Sel
No.
(Hex.)
Name Description
Default
(Range)
L8-05
(04B1)
Input Phase Loss Protection
Sel
Sets the function to enable and disable input phase loss detection.
Determined by o2-04
(Determined by o2-04)
0 : Disabled
1 : Enabled
The drive measures ripples in DC bus voltage to detect input phase loss.
The drive detects phase loss when power supply phase loss occurs or the main circuit capacitor becomes unusable,
which causes PF [Input Phase Loss] to show on the keypad.
Disable the detection of the input power supply phase loss function in these conditions:
• During deceleration
To Next Page
Loading...
