Megmeet MV200 Series - Page 186

186
The auto current limiting level (P97.10) defines the current threshold for the auto current limiting action.
Its setting range is the percentage relative to the drive rated current. Its leave- factory value varies
depending on the model, the G-type is 150% and the P-type is 110%.
The frequency reduction rate upon current limiting (P97.11) defines the adjustment rate of the output
frequency upon the auto current limiting.
If the frequency reduction rate upon current limiting (P97.11) is too small, it is difficult to get out of the auto
current limiting state, and it may ultimately cause overload fault. If its reduction rate is too large, the
frequency adjustment will be drastic, and the drive may be always in the power generation state, which
will cause over-voltage protection.
The auto current limiting function is always enabled in the acceleration/deceleration state, and whether it
will be enabled in constant speed operation depends on the auto current limiting action selection
(P97.09).
P97.09=0 indicates that the auto current limiting is disabled in the case of constant speed operation.
P97.09 = 1 indicates that the auto current limiting is enabled in the case of constant speed operation.
When the auto current limiting acts, the output frequency may change. For the situations requiring stable
output frequency at constant speed operation, the auto current limiting function shall not be used.
When the auto current limiting is enabled, because of the low setting of the current limiting level, it may
affect the overload capacity of the drive.
0: Disable the grounding short circuit detection upon power-up
1: Enable the grounding short circuit detection upon power-up
The grounding short circuit detection upon power-up means that the drive automatically detects whether
there is any grounding short circuit on the output side upon power-up. If any, the drive will display
“Er.GdF” fault, which can not be reset. Please power off, troubleshoot the detected grounding short circuit
on the output side and power up again. This function is available for drives of power of 7.5kW or below.
With the fault auto reset function, the faults in the operation can be automatically reset according to the
preset times and interval. When 0 is selected for the auto reset times, it indicates that auto reset is
disabled, and immediate fault protection shall be triggered.
 Note
1. The inverter module protection (Er.drv) and external equipment fault (Er.EFT) do not have auto reset
function.
2. During the reset interval, the output is locked at zero frequency. When the auto reset is completed, it will
automatically run in the speed tracking mode.
3. Be sure to use the auto fault reset function carefully, otherwise, human injury or property loss may be
caused.
The 1st fault t
yp
e 0~50
(
0
)
P97.15
Auto reset interval time 2.0~20.0s
(
5.0s
)
P97.14
Auto reset times 0~100
(
0
)
P97.13
Groundin
g
short circuit detection u
p
on
p
owe
r
-u
p
0~1
(
1
)
P97.12