YASKAWA iQpump Micro CIMR-PW Series User Manual page 209

Output frequency
f
ref
f × (L8-19)
ref
f × (L8-19)
ref
f × (L8-19)
ref
f × (L8-19)
ref
oH Alarm number
Digital output (4D)
L8-19: Frequency Reduction Rate During Overheat Pre-Alarm
n
Specifies how much the output frequency is reduced when L8-03 is set to 4 and an oH alarm is present. Set as a factor of the
maximum output frequency.
No.
L8-19 Frequency Reduction Rate During oH Pre-Alarm
L8-05: Input Phase Loss Protection Selection
n
Enables or disables the input phase loss detection.
No.
L8-05
Setting 0: Disabled
Setting 1: Enabled
Enables the input phase loss detection. As detection is performed by measuring the DC bus ripple, a phase loss fault (PF) can
also be triggered by power supply voltage imbalance or main circuit capacitor deterioration. Detection is disabled when:
• The drive is decelerating.
• No Run command is active.
• Output current is less than or equal to 30% of the drive rated current.
L8-07: Output Phase Loss Protection Selection
n
Enables or disables the output phase loss detection, which is triggered when the output current falls below 5% of the drive
rated current.
Note: Output phase loss detection can mistakenly be triggered if the motor rated current is very small compared to the drive rating. Disable this
parameter in such cases.
No.
L8-07
Setting 0: Disabled
Setting 1: Fault when One Phase is Lost
An output phase loss fault (LF) is triggered when one output phase is lost. The output shuts off and the motor coasts to stop.
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
10 s
10 s
oH
Alarm
oH
Alarm
2
3
4
Figure 5.78 Output Frequency Reduction During Overheat Alarm
Name
Name
Input Phase Loss Detection Selection
Name
Output Phase Loss Protection Selection
10 s 10 s 10 s 10 s
Reset oH
Alarm Reset oH
Alarm
oH
Alarm
5.8 L: Protection Functions
10 s
oH
etc.
Alarm
Time
Setting Range
0.1 to 0.9
Setting Range
0 or 1
Setting Range
0 to 2
Default
0.8
Default
1
5
Default
1
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