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Commissioning | A4... with HS5E(V)(L) control system Series 1x and 30
8.1.7.3 Dead volume
Table 21: Dead volume
Parameters
P-0-2813
You use this parameter to specify the dead volume of the system. The dead volume
is calculated as the oil volume that is in the system between the pump and the
consumer. The behavior of the pressure controller depends on the dead volume. This
means that you must always enter the current dead volume on this parameter.
8.1.7.4 Setting value of integrator
Table 22: Setting value of integrator
Parameters
P-0-2806.0.4
P-0-2806.0.6
P-0-2812
There are various parameters for setting the integrator. In this connection, the
integration time corresponds approximately to the regulating speed of the pump
system. In the pressure controller, there is a path for the integrator with feedback
of the change in pressure. This makes it possible to limit the integration value at
transitions.
If the actual pressure value is in the range of the accuracy window by the pressure
command value, the integrator value is not adjusted any more.
8.1.7.5 D component
Table 23: D component
Parameters
P-0-2816
P-0-2817
P-0-2978
The D component scales the change of the actual value signal and ensures a damped
transient response of the pressure or swivel angle controller. Differentiation
results in very high sensitivity, which also responds to undesirable signals such as
interference and can make the system unstable. In the case of a constant actual
value, the D-component does not respond, since the change rate is zero. The higher
the D-component, the slower is the system's response.
With the cascade structure, the D component is only used to increase damping in the
controller on an as required basis.
Designation
Pressure controller dead volume
Designation
Pressure controller integration time
Pressure controller accuracy window of integrator
Pressure controller derivation of actual pressure value feedback
of integrator
Designation
Pressure controller of cascade factor of D component positive
Pressure controller of cascade factor of D component negative
Swivel angle controller time constant D component
RE 92076-01-B/2021-04-22, Bosch Rexroth AG
77/104
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