Megmeet MV300 Series - Page 187

187
The current loop proportional gain and current loop integral time are automatically calculated in
identifying the motor parameter. The PI values are saved to P12.05 and P12.06 respectively after
identifying the parameter.
P12.05 and P12.06 are the PI regulator parameters of the current loop. Increasing KP or decreasing I of
the current loop can accelerate the dynamic response of the system; decreasing KP or increasing I can
improve the stability of the system.
 Note
For most applications, it is not necessary to adjust the PI parameter of the current loop. It is recommended to
change this parameter carefully.
Anti-trip function is used for defining whether the drive automatically performs low voltage compensation
in case of voltage decreasing or instantaneous under-voltage. The anti-trip operation shall be kept for the
drive via the load feedback energy by properly decreasing the output frequency.
When P12.07 is set as 0, disabled.
When P12.07 is set as 1, enabled and perform the compensation for the low voltage.
When performing the voltage compensation, if the setting of the frequency reduction rate P12.08 is too
large and the load instantaneous feedback energy is also too large, the over-voltage protection may be
incurred. If the P12.08 setting is too small and the load feedback energy is too small, the compensation
for the low voltage function may not be enabled. When adjusting, please reasonably select it according to
the load inertia and heavy or light load.
The pre-magnetizing is used for creating the magnetic field before the startup of the asynchronous motor.
0: Operate automatically
Internal temperature detection program will be automatically started during the drive operation to
determine the operation of the fan according to the module temperature. If the fan is running before the
drive stop, the fan will run for another 3 minutes after the drive shuts down, and then the internal
temperature detection program will be started.
1: The fan keeps running when the power is on.
Coolin
g
fan con
t
rol 0~1
(
2
)
P12.14
Low intensit
y
ma
g
netic control mode 0~2
(
1
)
P12.13
Low intensit
y
ma
g
netic ad
j
ustment coefficient 2 0~10000
(
1000
)
P12.12
Low intensit
y
ma
g
netic ad
j
ustment coefficient 1 0~10000
(
1000
)
P12.11
Minimum flux reference value 10~150 %
(
10%
)
P12.10
Pre-ma
g
netizin
g
time 0.0~10.0s
(
0.0
)
P12.09
Frequency reduction rate upon voltage compensation
0.00~99.99 Hz/s
(
10.00
)
P12.08
Tri
p
-free function enablin
g
0~1
(
0
)
P12.07
Current loo
p
inte
g
ral time ACR-I 0.5~100.0ms
(
8.0
)
P12.06
Current loo
p
p
ro
p
ortional
g
ain ACR-P 1~5000
(
1000
)
P12.05