Wilo Helix2.0-VE, Инструкция по установке и эксплуатации

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38 Installation and operating instructions • Drive for Wilo-Helix2.0-VE / Wilo-Medana CH3-LE • Ed.01/2022-06
The pump controls based on a user-defined control function. PID control parameters Kp, Ti
and Td must be specified manually.
Constant pressure p-c
P
atm
P-c
Q
H
p-c
The control keeps a constant pressure at the pump discharge at the selected pressure set-
point P
setpoint
whatever the delivery rate required by the installation.
A relative pressure sensor is used for control (sensor: accuracy: ≤ 1 %; using is the range of
30 % to 100 %).
10.2 Selection of a control In the “Settings” menu , select:
1. "Set control mode"
2. Select "Control mode"
Settings
Control settings
External interfaces
Dual pump management
Universal Display text
1.0
Settings
1.1 Control settings
1.2 Monitoring setting
1.3 External interfaces
1.4 Double pump management
1.5
Display settings
1.6 Additional settings
NOTICE
All parameters must be set for each control mode (except for the factory
setting). If a new control mode is set, all parameters must be set again.
They are not taken over from the previously set control mode.
Universal Display text
1.1
Control settings
1.1.1 Control mode
Δp-v Δp-v
Δp-c Δp-c
n-c n-c
PID control PID control
p-c p-c
The following basic control modes are available:
Control modes
> Variable differential pressure ∆p-v
> Constant differential pressure ∆p-c
> Constant speed n-c