Wilo Yonos GIGA2.0-D, Installation And Operating Instructions Manual

Page: 155 / 424

Control settings en
Installation and operating instructions Wilo-Yonos GIGA2.0-I/-D 155
n
min
n
max
n = const
max
Q
s
H
max
H
H
s
H
min
H
s
1
2
H
Q
H
Q
H
max
H
s
H
min
H
s
1
2
Fig. 39: Control functions
Differential pressure ∆p v (factory setting for Yonos GIGA2.0)
The control changes the differential pressure setpoint to be maintained by the pump
linearly between reduced differential pressure H and H
target
.
The controlled differential pressure H decreases or increases with the flow rate.
Differential pressure Δp-c
The control keeps the differential pressure generated by the pump constant over the
permissible flow rate range at the set differential pressure setpoint H
target
up to the
maximum characteristic curve.
Starting from a required delivery head to be set according to the design point, the pump
variably adapts the pump capacity to the required volume flow. The volume flow varies
due to the open and closed valves on the consumer circuits. The pump output is adjus-
ted to the requirements of the consumer load and the energy requirement is reduced.
Constant speed (n-c / factory setting for Yonos GIGA2.0 ... R1)
The speed of the pump is kept at a set constant speed. The speed range is dependent
on the motor and pump type.
User-defined PID control
The pump controls based on a user-defined control function. The PID control paramet-
ers Kp, Ti and Td must be specified manually.
The PID controller used in the pump is a standard PID controller.
The controller compares the measured actual value with the specified setpoint and at-
tempts to match the actual value to the setpoint as closely as possible.
Provided the appropriate sensors are used, various controls can be implemented.
When selecting a sensor, attention must be paid to the configuration of the analogue
input.
The control behaviour can be optimised by changing the P, I and D parameters.
The direction of control action can be adjusted by switching the control inversion on or
off.
10.2 Selecting a control mode
The following submenus can be selected in the “Settings” menu (Universal 1.0):
Universal Display text
1.1 Control settings
1.3 External interfaces
1.4 Dual pump management
1.5 Display settings
1.6 Additional settings
Control settings
Control mode
Setpoint Δp-v
Emergency operation
Fig. 40: Control mode
To choose a control mode, select the following in succession:
Universal Display text
1.0 Settings
1.1 Control settings
1.1.1 Control mode