Position Input Filter (RMC200)

Type:	Axis Parameter Register
Address:	RMC75: n/a RMC150: n/a RMC200: %MDn.45, where n = 384 + the axis number
System Tag:	_Axis[n ].PosInputFilter, where n is the axis number
How to Find:	Axes Parameters Pane, All tab: Feedback→Input Filter
Data Type:	REAL
Units:	Hz
Range:	0: Off Minimum: 0.01 Maximum: See Limits below
Default Value:	0

Description

The RMC200 Position Input Filter parameter specifies the cut-off frequency of the filter in Hertz. This filter is applied to the Actual Position that is used in the control algorithm. Setting this value to zero (0) disables the Position Input Filter. This filter is only available if the Input Filter Type has been set to a filter type that uses the Position Input Filter.

The Position Input Filter is part of the Input Filter, which filters the feedback values used by the control algorithm. This differs from the Position Display Filter axis parameter, which is part of the Display Filter. Feedback values are first filtered by the Input Filter, if it is enabled, and then also by the Display Filter, before being displayed as the final feedback values.

For more details, see Filtering.

Limits

The filter is disabled (without notice to the user) when the frequency is set above the maximum frequencies listed below, or below the minimum value.

Filter Algorithm Type	Min Cut-off Frequency	Max Cut-off Frequency
Low Pass, Single Pole	0.01	50% x loop frequency
Low Pass, 2-pole Butterworth	0.01	25% x loop frequency
Low Pass, 4-pole Butterworth	0.01	25% x loop frequency
Low Pass ABG	0.01	10% x loop frequency
Low Pass ABGD	0.01	7.5% x loop frequency