5.8 L: Protection Functions
334 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
H3-xx = B: PID Feedback
L5-04: Interval Method Restart Time
Y1-08: Low Feedback Level
Y1-09: Low Feedback Lvl Fault Dly Time
Y1-14: Feedback Hysteresis Level
LFB Fault: Low Feedback Sensed
Figure 5.80 Auto Restart for Low Feedback Detection when b5-09 = 1
â– L5-41: Hi Feedback Flt Retry Selection
No.
(Hex.)
Name Description
Default
(Range)
L5-41
(3671)
Hi Feedback Flt Retry
Selection
Sets the drive to do an Auto Restart when the drive detects an HFB [High Feedback Sensed] fault. 0
(0, 1)
0 : No Retry
1 : Retry
• When L5-41 = 1 and b5-09 = 0 [PID Output Level Selection = Normal Output (Direct Acting)], the auto-restart
timer will not start timing until after the feedback level decreases to less than Y1-11 [High Feedback Level] (- Y1-14
[High Feedback Hysteresis Level]).
• The drive will set the output frequency to zero during the auto-restart interval time.
• If you remove the Run (or HAND) Command during the auto-restart interval time, the drive will immediately detect
and reset the fault.
• When L5-49 = 1 [Fault Retry Speed Search Select = Enabled], the drive will do a speed search when it resets and
restarts after a fault.
• When you enable Thrust or Pre-Charge Modes, the drive will operate them correctly.
When L5-41 = 1, the drive operation will change when b5-09 [PID Output Level Selection] changes:
H3-xx = B: PID Feedback
L5-04: Interval Method Restart Time
Y1-11: High Feedback Level
Y1-12: High Feedback Lvl Fault Dly Time
Y1-14: Feedback Hysteresis Level
HFB Fault: High Feedback Sensed
Figure 5.81 Auto Restart for High Feedback Detection when b5-09 = 0 [Normal Output (Direct Acting)]
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