342
YASKAWA
SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
■
L8-03: Overheat Pre-Alarm Selection
No.
(Hex.)
Name
Description
Default
(Range)
L8-03
(04AF)
Overheat Pre-Alarm
Selection
Sets drive operation if it detects an
oH
alarm.
4
(0 - 4)
0 : Ramp to Stop
The drive ramps the motor to stop in the deceleration time. Fault relay output terminal MA-MC activates and MB-MC
deactivates.
1 : Coast to Stop
The output turns off and the motor coasts to stop. Fault relay output terminal MA-MC turns activates and MB-MC
deactivates.
2 : Fast Stop (Use C1-09)
The drive stops the motor in the deceleration time set in
C1-09 [Fast Stop Time]
. Fault relay output terminal MA-MC
activates and MB-MC deactivates.
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.
oH flashes on the keypad. 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.
shows the output of the alarm and the drive
operation at a decreased output frequency.
H2-xx = 4D: oH Pre-Alarm Reduction Limit
L8-19: Freq Reduction @ oH Pre-Alarm
oH Alarm: Heatsink Overheat
Figure 5.88 Drive Operation at a Decreased Output Frequency when the Overheat Alarm is Output
*1
If the
oH
alarm continues after 10 reduction cycles, the terminal set for
H2-xx = 4D [oH Pre-Alarm Reduction Limit]
will activate.
Note:
•
The drive will use the largest value of
Y1-06 [Minimum Speed]
,
Y4-12 [Thrust Frequency]
, or
d2-02 [Frequency Reference Lower Limit]
as
the lower limit for output frequency.
•
Parameter
L8-97 [Carrier Freq Reduce during OH]
enables and disables the carrier frequency reduction during
oH
pre-alarm.
Содержание HV600
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Страница 30: ...1 2 Catalog Code and Nameplate Check 30 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
Страница 68: ...2 9 Knock Out Hole Dimensions 68 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
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Страница 454: ...5 14 Z Bypass Parameters 454 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
Страница 590: ...8 6 Storage Guidelines 590 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
Страница 694: ...9 19 Defaults by Bypass and Drive Model 694 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
Страница 768: ...10 6 MEMOBUS Modbus Communications 768 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...
Страница 780: ...11 3 European Standards 780 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference...