Bosch rexroth HS5E Instruction Manual page 78

78/104 A4... with HS5E(V)(L) control system Series 1x and 30 | Commissioning
Bosch Rexroth AG, RE 92076-01-B/2021-04-22
8.1.7.6 Setting the pressure controller parameters
The pump controller in the cascade structure consists of a pressure controller with
a lower-level swivel angle controller. The settings of the swivel angle controller are
mainly dependent on the pump size and you do not normally need to set them on
a plant-specific basis. This means that it is generally enough to adapt the controller
parameters in the pressure controller.
Below, we will give you information about setting the individual parameters:
Fig. 28: Damped oscillation
Step Behavior/result
1 Overshoots
(damped oscillation)
2 Overshoots
(damped oscillation)
3 Actual pressure value
still overshooting
Pressure command value
damped oscillation
Time
Measure
Check the value of the dead volume (P-0-2813) and correct it
if necessary.
Increase feedback of integrator (P-0-2812) to reduce initial
overshoots
Reduce P-gain (P-0-2809); if necessary, increase D
component