ID
Index Name
Unit
Description
2848
HYD_PosCon
Position Controller Parameters
2848
0
Kp
1/min Gain of position controller
2848
1
Tn
ms
Position control integration time constant
2848
2
SFF
%
Speed feedforward scaling
2848
3
PosDiffMax
um
Position tracking error monitoring
Table 7.84: “Hydraulic - position control” parameters
7.11.11 Digital filter Hydraulics
For special applications the hydraulics firmware has two biquad filters connected in
series with different input and output variables. For example, acceleration can be fed
back to the position controller.
MOOG
ID No.: CB40859-001 Date: 11/2020
MSD Servo Drive - Device Help
207
7 Control
Image 7.80: Digital Filter Hydraulics Screen
Via P 2876 HYD_AdvFilSel the filter can be activated and the input and output sizes
can be selected.
The actual pressure value P 2843.1 pressAct in bar or the cylinder speed P 2843.23
ActSpd in rpm (Cyl_nAct(2)) or in mm/s (Cyl_ActSpd(3)) are available as input
variables.
An additive speed setpoint (nFF(1)) or volume flow rate setpoint (volFF(2)) can be
selected at the filter output. The speed reference value is connected to the output of
the pressure control and the cylinder speed control. Selecting volFF(2) acts at the
output of the pressure control with volumetric flow rate output and the subordinate
