Glentek Omega SMC9930, Installation & Operation Manual

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Omega Series Digital PWM Amplifier Manual
Sample DBN operating sequence
:
1) Write DBN Setup Data (Pulse Width, Interval, Config) to the drive processor. Set Interpolator/DBN_Mode to
Setup/Cal to transfer the setup data to the DBN processor.
2) Write Num_DBN_Frames , n, to drive processor.
3) Set Frame_Data_Index to 0.
4) Write frame Data beginning with frame[0].start, frame[0].stop…frame[n-1].start, frame[n-1].stop. The
frame_data_index will auto-increment after each write so it is not necessary to update the index unless non-
sequential access is desired.
5) Set Interpolator/DBN_Mode to DBN_Load_Frames. The frames will be downloaded at 1 frame/PWM_Cycle
(24kHz).
6) Monitor the DBN_Download_In_Progress bit if the Interp/DBN_Status register to determine if the download
is complete.
7) When ready to begin the DBN sequence, change Interpolator/DBN_Mode to DBN_Enable .
8) Repeat steps 2-4 to download the next sequence of frames to the drive processor.
9) Wait for the executing sequence to complete by monitoring the DBN_Done bit of the Interp/DBN_Status reg-
ister.
10) Repeat steps 5-9 as desired. Changing the mode to DBN_Load_Frames will clear the DBN_Done bit and al-
low the next sequence to execute once the mode is changed back to DBN_Enable .
11) If DBN_Enable mode is exited before the sequence has completed, the frames must be re-loaded to reset the
sequence to frame 0. If the frames are not reloaded, the sequence will begin with the frame that was execut-
ing when the DBN was disabled.
DBN Arming :
Start position < Stop position (Direction positive)
The trigger position is set to the start position.
The DBN will arm once the absolute position is < the start position.
The first DBN pulse will occur when armed and the absolute position >= start position.
Once a trigger occurs the trigger position is updated to last_trigger_pDBN_Interval.
If the motion is reversed before the stop position is reached and the absolute position becomes < the start posi-
tion, the trigger position is reloaded with the start position.
Once the stop position has been exceeded, the next frame start position is loaded.
Start position > Stop position (Direction negative)
The trigger position is set to the start position.
The DBN will arm once the absolute position is > the start position.
The first DBN pulse will occur when armed and absolute position <= start position.
Once a trigger occurs the trigger position is updated to last_trigger_position-DBN_Interval.
If the motion is reversed before the stop position is reached and the absolute becomes > the start position, the
trigger position is reloaded with the start position.
Once the stop position has been exceeded, the next frame start position is loaded.