Selecting the hydraulic control mode (Para 2860 HYD_TabConMode):
PressCon(0) = pressure control
VolConPlim(1) = volumetric flow rate control (pressure limited)
SpeedCon(2) = speed control
PosCon(3) = position control
NPumpCon(4) = pump speed control
VolCon(5) = volumetric flow rate control (without pressure control)
ID
Index Name
Unit Description
2860
HYD_ConMode
(Hydraulic Control Mode)
2860
0...15 HYD_ConMode
(Hydraulic Control Mode)
Table 7.67: “Hydraulic - Control mode” parameters
Hydraulic setpoint
Setpoint for pressure, volumetric flow rate, cylinder speed, cylinder position. The unit
(HYD_UNIT) depends on the control mode and corresponds to bar for pressure
control, l/min for volumetric flow rate control and rpm for pump speed control. For
cylinder position and speed control, the unit corresponds to the UserUnit selected in
the scaling (chapter 8.2). This also applies for derivative 1 and 2 or speed and
acceleration.
ID
Index Name
Unit
Description
2857
HYD_Ref
Hydraulic: Setpoint for volumetric flow
rate/pressure/speed/position
2857
0..15
HYD_Ref
HYD_Unit
Hydraulic: Setpoint for volumetric flow
rate/pressure/speed/position
Table 7.68: “Hydraulic - Reference value” parameters
1st reference value derivative
Rise time/speed of the setpoint
MOOG
ID No.: CB40859-001 Date: 11/2020
MSD Servo Drive - Device Help
194
7 Control
ID
Index Name
Unit
Description
2858
HYD_dRef
Hydraulic: 1st setpoint derivative
2858
0. .15 HYD_dRef
HYD_UNIT/s Hydraulic: 1st setpoint derivative
Table 7.69: “Hydraulic - 1st setpoint derivative” parameters
2nd setpoint derivative
Setpoint acceleration (this parameter is not active for pressure and volumetric flow
rate)
ID
Index Name
Unit
Description
2859
HYD_d2Ref
Hydraulic: 2nd setpoint derivative
2859
0 . .15 HYD_d2Ref
HYD_UNIT/s/s Hydraulic: 2nd setpoint derivative
Table 7.70: “Hydraulic - 2nd setpoint derivative” parameters
Hydraulic control parameters table
For the control of the valve position, switching of the position controller settings and
of the pump data set as well as for enabling the active decompression, the
respective bits can be enabled in this parameter for every motion block. The active
decompression prevents that a motion block is started as long as pressure is still
applied. If the bit is active, the pressure is reduced via a defined ramp (P 2850.11
decmpRate) below a specified pressure level (P 2850.10 decmpLvl) before the
respective motion block is started.
Bit
Designation
Meaning
0
ZylArea(A1/A2)
Switchover of the cylinder Area
1
Reserved
2
POS
Extend the hydraulic valve cylinder
3
neg
Retract the hydraulic valve cylinder
4
Opt1
Valve option 1
Table 7.71: Control parameters table