Megmeet MV600 Series User Manual

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3. The adjustment of the PI parameter in case of the high/low speed running of the speed regulator (ASR)
If both high-speed and low-speed running with load are required by the system, you can set the ASR
switching frequency (P05.03 and P05.07). Generally, while the system is running with the low frequency,
you can increase the proportional gain P and reduce the integral time I accordingly to improve the
dynamic response performances. The parameters of the speed regulator usually can be adjusted
according to the following steps:
1) Select the proper switching frequency (P05.03 and P05.07).
2) Adjust the proportional gain P05.04 and the integral time P05.05 for the high-speed running and
ensure no oscillation and sound dynamic response performance for the system.
3) Adjust the proportional gain P05.00 and the integral time P05.01 for the low speed running and ensure
no oscillation and sound dynamic response performance for the low-frequency running.
4. Speed regulator (ASR) filtering
Let the output of the speed regulator (ASR) pass the delay filter once to get the torque current reference.
P05.02 and P05.06 are the time constant of ASR1 and ASR2 output filters respectively.
The differential gain of the speed loop P05.12 is used to increase the damping of the system, which can
reduce the overshoot and backswing of the system. There is no need to set this parameter in most of
running occasions.
For the relationship between the step response and PI parameters of the speed regulator (ASR), please
refer to Fig. 6-21.
Set the physical channel for the positive and negative torque limits.
0: The torque limit value is set by the digit
P05.15 and P05.16 are the positive torque limit value and negative torque limit value respectively.
1: The torque limit value is the AI reference value
The maximum value of AI input voltage/current (10V/20mA) can correspond to 300
％ of rated torque
command.
When using this function, the user needs to define the function of the AI terminal as the positive torque
limit value. Taking AI1 as an example, set the function code P05.13 to be 1 first, then set the unit place of
P10.01 to be 6.
2: The torque limit value is the terminal PULSE reference value
The maximum value of the terminal PULSE input frequency (100k) can correspond to 300
％ of the rated
torque command. Please refer to the description in Group P10 for the correspondence between the pulse
input and output.
The pulse input terminal of the torque limit value is only valid for X7 and X8. To define the function of
terminal X8 as the torque limit pulse, the user needs to set the function P09.07 (or P09.06) = 51 or 52.
3: Process closed loop output
Braking torque limit channel
0~3
(
0
)
P05.14
Electric torque limit channel
0~3
(
0
)
P05.13
ASR differential gain
0.00~10.00
(
0.00
)
P05.12
Differential gain enabling
0~1
(
0
)
P05.11

Megmeet MV600 Series Specifications

General

Brand	Megmeet
Model	MV600 Series
Category	DC Drives
Language	English