Delta ASD-B2-0121-B, User Manual

Page: 136 / 313

Chapter 6 Control Modes of Operation
Revision June 2010
6-27
There are two groups of notch filters provided by ASDA-A2 series. The first group of notch
filter is P2-43 and P2-44, and the second group of notch filter is P2-45 and P2-46. When there
is resonance, please set P2-47 to 1 or 2 (Auto mode), and then the servo drive will find
resonance frequency and suppress the resonance automatically. After suppressing the
resonance point, the system will memorize the notch filter frequency into P2-43 and P-45, and
memorize the notch filter attenuation rate into P2-44 and P2-46.
When P2-47 is set to 1, the resonance suppression will be enabled automatically. After the
mechanical system becomes stable (approximate 20 minutes), the setting value of P2-47 will
return to 0 (Disable auto resonance suppression function). When P2-47 is set to 2, the system
will find the resonance point continuously even after the mechanical system becomes stable.
When P2-47 is set to 1 or 2, if the resonance conditions can not be eliminated, we recommend
the users to check the settings of P2-44 and P2-46. If either of the setting value of P2-44 and
P2-46 is set to 32, please decrease the speed frequency response and estimate the resonance
point again. If the resonance conditions can not be eliminated when the setting values of P2-
44 and P2-46 are both less than 32, please set P2-47 to 0 first, and increase the setting value
of P2-44 and P2-46 manually. If the resonance exists still after increasing the setting value of
P2-44 and P2-46, please decrease the value of speed frequency response again and then use
the resonance suppression function again.
When increasing the setting value of P2-44 and P2-46 manually, ensure to pay close attention
on the setting value of P2-44 and P2-46. If the value of P2-44 and P2-46 is greater than 0, it
indicates that the corresponding resonance frequency of P2-43 and P2-45 is found through
auto resonance suppression function. If the value of P2-44 and P2-46 is equal to 0, it indicates
that the value of P2-43 and P2-45 will be the default value 1000 and this is not the frequency
found by auto resonance suppression function. At this time, if the users increase the value of
notch filter attenuation rate which does not exist, the performance of the current mechanical
system may deteriorate.
Settings of P2-47
Current Value Desired Value Function
0 1
Clear the setting value of P2-43 ~ P2-46 and enable
auto resonance suppression function.
0 2
Clear the setting value of P2-43 ~ P2-46 and enable
auto resonance suppression function.
1 0
Save the setting value of P2-43 ~ P2-46 and disable
auto resonance suppression function.
1 1
Clear the setting value of P2-43 ~ P2-46 and enable
auto resonance suppression function.
1 2
Do not clear the setting value of P2-43 ~ P2-46 and
enable auto resonance suppression function
continuously.
2 0
Save the setting value of P2-43 ~ P2-46 and disable
auto resonance suppression function.
2 1
Clear the setting value of P2-43 ~ P2-46 and enable
auto resonance suppression function.