Bosch rexroth SYDFED 2X Series Manual page 66

66/96 SYDFED-2X, SYDFED-3X, SYHDFED-1X | Commissioning
Bosch Rexroth AG, Edition 11.2021, RE 30017-B
8.1.8.1 P-gain (proportional gain)
Table 16: P-gain
Parameter Designation
P-0-2963 Pressure controller P-gain 1 positive
P-0-2964 Pressure controller P-gain 1 negative
P-0-2977 Swivel angle controller P-gain
These controller parameters represent a linear gain, i.e. the output signal and the
control deviation are in a proportional relationship. It must be noted here that the
positive controller parameter (P-0-2963) is used for building up pressure, whereas
the negative controller parameter (P-0-2964) is used for reducing the pressure.
The smaller this value is set, the slower is the controller's response. If you select
an excessively high value, the system can become unstable.
8.1.8.2 Second P-gain
Table 17: Second P-gain
Parameter Designation
P-0-2967 Pressure controller control deviation threshold positive
P-0-2965 Pressure controller P-gain 2 positive
P-0-2968 Pressure controller control deviation threshold negative
P-0-2966 Pressure controller P-gain 2 negative
With the extended pressure controller, an inflected characteristic curve for the
P-gain is activated. Through targeted gain, optimum controlling can be achieved.
As can be seen in the figure below, the second P-gain becomes effective only
above the threshold to be set.
1st P-gain
(negative)
Neg. threshold
2nd P-gain
(negative)
Fig. 28: Second P-gain
2nd P-gain
(positive)
Pos.
threshold
1st P-gain
(positive)