Moog ACV with CANopen bus interface
7 Servo valve functions
Pressure setpoint conditioning / demand value generator
B99224-DV018-D-211, Rev. A, October 2018
167
7.4.5.4.4 Object 0x63B6: Deceleration time negative
This parameter defines the output signal's maximum rate of change on the negative side. The deceleration
time corresponds to the time that the signal needs for a change from 100 to 0 %. The deceleration time can be
specified with a resolution of 1 s, 100 ms, 10 ms or 1 ms.
Chapter "2.4.3 Units and prefix parameter", page 12
7.4.6 Pressure demand signal sign
In the pQ control mode, the <ControlMode> (0x6043) is set to 5 (p/Q control), the following structure calcu-
lates the polarity of the pressure demand value. Negative pressure setpoint means that the pressure setpoint
is effective on port B.
Figure 78: Pressure demand signal sign
7.4.6.1 Object 0x586D: Pressure demand sign mode
With this parameter the pressure demand value sign can be parameterized to be dependent on the sign of the
spool position setpoint value.
Value description
ValvePressureControl_DemandValueGenerator_Ramp
Index
Sub-index
Parameter name
Data type
Access
Per-
sistence
Value
range
Default
0x63B6
1
DecelerationTimeNegative
UINT16
rw
Y
UINT16
0
0x63B6
2
Unit
UINT8
ro
-
UINT8
3
0x63B6
3
DecelerationTimeNegative_Prefix
INT8
rw
Y
–4…0
–3
abs(x)
<SplDemandValue>
(0x6310)
<PressureDemandSignMode>
(0x586D)
1
0
Input
Output
ValvePressureControl
Index
Sub-index
Parameter name
Data type
Access
Per-
sistence
Value range
Default
0x586D
0
PressureDemandSignMode
UINT8
rw
Y
0…1
0
<PressureDemandSignMode>
Description
0
Sign of the pressure demand value will not be influenced.
1
Sign of the pressure demand value is the same as the sign of the spool po-
sition demand value.
Table 80: Possible values of parameter <PressureDemandSignMode> (0x586D)
