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

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42 Installation and operating instructions • Drive for Wilo-Helix2.0-VE / Wilo-Medana CH3-LE • Ed.01/2022-06
• No-flow stop: ON/OFF
If no-flow stop is switched ON, an additional setting item for configuration of “No-flow
stop: limit” appears.
When confirming the " No-flow stop " menu item, you can choose between switch OFF
and switch ON. When selecting switch ON, another menu item “No-flow stop limit” ap-
pears. The flow limit can be set here.
NOTICE
If the volume flow decreases due to closing valves and if this falls below
limit, the pump is stopped.
The pump checks every 5 minutes (300 s) whether the volume flow re-
quirement increases again. As soon as this occurs, the pump continues in
its set control mode in control mode.
The time interval to check whether the volume flow has increased com-
pared to the set minimum volume flow "No-Flow Stop limit" is 10 s.
10.2.3 Constant speed n-c specific para-
meters
The following parameters appear when the control mode “n-c” is selected:
Universal Display text
1.1.1 Control mode
1.1.2 n-c Setpoint n-c
1.1.9 Setpoint source
1.1.9 / 1 Internal setpoint
1.1.9 / 2 Analog input (AI2)
1.1.9 / 3 CIF module
1.1.10 Substitute setpoint
1.1.15 Pump ON/OFF
• Setting the setpoint n-c
When the menu item is selected, the desired speed can be set as the setpoint.
NOTICE
The setpoint can only be set if the setpoint source is set to "Internal set-
point" (see Setting the setpoint source).
• Setting the setpoint source
Sources can be selected between “Internal setpoint‘, “Analogue input AI 2” or a CIF
module.
NOTICE
A CIF module can only be selected as a setpoint source if a CIF module is
installed. If no CIF module is installed, the menu item cannot be selected
(‚greyed out‘).
If the setpoint is selected via the "Analogue input AI 2", the analogue in-
put can be set via the Settings menu.
If an external setpoint source is selected (analogue input or CIF module), the menu item
"substitute setpoint" appears. A fixed setpoint can be specified here, which is used for the
control in the event of a failure of the setpoint source (e.g. cable break at the analogue in-
put, no communication with the CIF module).
10.2.4 PID control specific parameters The following parameters appear when the control type “PID control” is selected:
Universal Display text
1.1.1 Control mode
1.1.2 PID Setpoint PID