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

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48 Installation and operating instructions • Drive for Wilo-Helix2.0-VE / Wilo-Medana CH3-LE • Ed.01/2022-06
Max. pressure detection
Max. pressure
detection: ON/OFF
In menu Setting
Universal Displaytext
1.2.2 Max. pressure detection
1.2.2.1 Max. pressure detection: ON/OFF
1.2.2.2 Max. pressure detection: limit
1.2.2.3 Max. pressure detection: delay
1. Monitoring Settings
2. Max. Pressure detection
The function can be switched ON and OFF
If the function is switched ON, the following additional settings appear in the Menu:
Max. pressure detection
Max. pressure
detection: ON/OFF
Max. pressure
detection: limit
Max. pressure
detection: delay
Max. pressure detection: limit
-> The pressure limit used as detection threshold.
Max. pressure detection: delay
->The time the motor will stop before the motor restart again. The delay time is configured
in seconds.
NOTICE
The input value of the actual duty point for "Max. pressure limit" shall be
delivered by an external relative pressure sensor connected on pumps dis-
charge side. The relative pressure sensor has to be connected to the ter-
minals AI 1. The AI 1 analog input must be configured accordingly.
11.3 Lack of water detection There are two ways of lack of water detection: Via the analog input (usually by suction
pressure sensor) and/or via a digital input (usually level switch). The selection and configur-
ation of the method is done in
Lack of water
detection
Lack of water detection
by sensor: ON/OFF
Lack of water detection
by switch: ON/OFF
Menu Setting
Universal Displaytext
1.2.3 Lack of water detection
1.2.3.1 Lack of water detection by sensor: ON/OFF
1.2.3.2 Lack of water detection by sensor: limit
1.2.3.3 Lack of water detection by switch: ON/OFF
1.2.3.4 Lack of water detection: activation delay
1.2.3.5 Lack of water detection: deactivation delay
1. Monitoring Settings
2. Lack of water detection
11.3.1 Lack of water detection by suction
pressure sensor When the pump is directly connected to the supplier system, there is the risk of too low
pressure at the suction side. The function “lack of water detection by pressure sensor” pro-
tects the pump and the supplier system from this low pressure. If the pressure at suction
side falls below an user configurable threshold for a user configurable time interval, the
motor will stop. A hysteresis and a user configurable time interval ensures that the detec-
tion is not toggling. If the motor is stopped via the function an error will be indicated on the
HMI.
NOTICE
The menu item “Lack of water detection” is only available for the control
modes p-c, PID and n-const.