User guide

Configuring an Application www.controltechniques.com 51
7.3.3.4 Master Position Filter
7.3.3.4.1 Master Position Filter Enable Checkbox
The Master Position Filter Enable check box is used to turn
on or turn off the Master Position Filter. When Enable
check box is selected, the filter is active and the user must
select the number of samples, from the Samples list box,
used by the filter. If clear, the filter is not used
7.3.3.5 Master Position Filter Samples
Defines the number of samples used by the filter to smooth
the master signal. Increasing the number of samples
increases smoothness, but also increases lag. See Filter
table below to select proper setting.
7.3.3.5.1 Enable Feedforward
The Enable Feedforward Check Box is used to turn on or
turn off feedforward. When the checkbox is selected,
feedforward is active. If the checkbox is clear, feedforward
is not used.
7.3.3.6 Master Velocity Units
7.3.3.6.1 Decimal Places
The number of decimal places defined in this parameter
determines the max resolution of all synchronized time
base velocity parameters found throughout the
PowerTools Pro software. Set between 0 and 6 decimal
places. Higher number of decimal places allows higher
velocity resolution, but can limit the max speed allowed by
the application.
7.3.3.7 Master Acceleration Units
7.3.3.7.1 Decimal Placed
The number of decimal places defined in this parameter
determines the max resolution of all synchronized time
base acceleration and deceleration parameters found
throughout the software. Set between 0 and 6 decimal
places.
Feedforward OFF Feedforward ON
# of
Samples
Disabled
One update of phase shift
(not velocity dependent)
No Filtering
No delay,
No Filtering
4
Small Lag (function of speed),
Low Filtering
Poor at low speed,
Low Filtering
8
Medium Lag (function of speed),
Medium Filtering
Good at low speed,
Medium Filtering
16
Large Lag (function of speed),
High Filtering
Best at low speeds,
High Filtering
Smoother
Increasing Lag
with FF Off
Reduced Lag