Inovance MD380 Series, User Manual

Page: 208 / 304

Description of Function Codes
MD380 User Manual
- 208 -
Function Code Parameter Name Setting Range Default
F9-63 Protection upon load lost
0: Disabled
1: Enabled
0
F9-64 Load lost detection level
0.0%–100.0% (rated
motor current)
10.0%
F9-65 Load lost detection time 0.0–60.0s 1.0s
If protection upon load lost is enabled, when the output current of the AC drive is lower
than the detection level (F9-64) and the lasting time exceeds the detection time (F9-65),
the output frequency of the AC drive automatically declines to 7% of the rated frequency.
During the protection, the AC drive automatically accelerates to the set frequency if the load
resumes to normal.
Function Code Parameter Name Setting Range Default
F9-67
2YHUVSHHGGHWHFWLRQYDOXH
0.0%–50.0% (maximum frequency) 20.0%
F9-68
2YHUVSHHGGHWHFWLRQWLPH
0.0–60.0s 1.0s
This function is valid only when the AC drive runs in the CLVC mode.
If the actual motor rotational speed detected by the AC drive exceeds the maximum
frequency and the excessive value is greater than the value of F9-67 and the lasting time
exceeds the value of F9-68, the AC drive reports Err43 and acts according to the selected
fault protection action.
If the over-speed detection time is 0.0s, the over-speed detection function is disabled.
Function Code Parameter Name Setting Range Default
F9-69
Detection level of too large speed
feedback error 0.0%–50.0% (maximum
frequency)
20.0%
F9-70
Detection time of too large speed
feedback error
0.0–60.0s 5.0s
This function is valid only when the AC drive runs in the CLVC mode.
If the AC drive detects the deviation between the actual motor rotational speed detected by
the AC drive and the set frequency is greater than the value of F9-69 and the lasting time
exceeds the value of F9-70, the AC drive reports Err42 and according to the selected fault
protection action.
If F9-70 (Detection time of too large speed deviation) is 0.0s, this function is disabled.
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