Parker Hannifin 88-021610-01G - Manual (Page 123)

Parker Hannifin
Chapter 6 Command Reference 123
filter. The DNOTLG lag filter must be configured before the DNOTLD lead filter
is configured.
The DNOTLD value must be less than or equal to 4 times the DNOTLG (notch
lag frequency) value; otherwise, the new DNOTLD value will be ignored (but
not overwritten), the configuration warning bit (E17) will be set, and the last
valid DNOTLD value will be used internally. This warning is cleared with the
RESET command or by cycling power to the drive.
This filter operates in all DMODE settings, except Autorun (DMODE1).
In the graphs below, the transfer function is shown relating the internal
commanded torque/force vs. the user commanded torque/force. In this
example, the lag frequency was set first to 40 Hz (DNOTLG4Ø) and then the
lead filter was set to 160 Hz (DNOTLD).
Figure 47 Notch Lead Filter Break Frequency
DNOTLG Notch Lag Filter Break Frequency
Type Tuning Product Rev
Syntax DNOTLG Aries 2.0
Units i = Hz
Range Ø (disable), or 2Ш-1ШШШ
Default Ø (filter is disabled)
Response DNOTLG: *DNOTLG4ØØ
See Also DNOTAD , DNOTAF , DNOTAQ , DNOTBD , DNOTBF ,
DNOTBQ , DNOTLD
The DNOTLG command sets the break frequency of the lag filter. This filter
can be used alone, or in conjunction with lead filter (DNOTLD) to improve the
phase response of the notch filters. In this case, the lag value (DNOTLG) must
be greater than or equal to ¼ of the lead value (DNOTLD), but not greater
than the DNOTLD value.
If DNOTLG is lower than ¼ the value of DNOTLD, the new DNOTLG value is
ignored (but not overwritten), the configuration warning bit (E17) is set, and
the last valid DNOTLG value is used internally. This warning is cleared with
the
RESET command or by cycling power to the drive.
This filter operates in all DMODE settings, except Autorun (DMODE1).