Wilo Control EC-L, Инструкция по установке и эксплуатации

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28 Installation and operating instructions • Wilo-Control EC-L • Ed.04/2022-09
Level measurement with level sensor or dynamic pressure bell
5
2
1
3
4
6
7*
8*
Fig. 25: Illustration of the switching points
with a level sensor in the “drain” operating
mode using the example of two pumps
1 Pump 1 On
2 Pump 1 Off
3 Pump 2 On
4 Pump 2 Off
5 Dry-running level
6 High water level
7 High water level*
8 Dry-running level*
* Also implemented via a separate float switch for increased operational reliability.
A level sensor or dynamic pressure bell can be connected. This can be used to control three
pumps:
• Pump 1 On/Off
• Pump 2 On/Off
• Pump 3 On/Off
• Dry-running level
• High water level
7.2.2 “Fill” operating mode The reservoir is filled up, for instance, to pump water into a rainwater storage tank. The
pumps are activated when the level falls and switched off when the level rises. This control
is mainly used for
water supply .
Level control for float switch or electrodes
Extern OFF
4
5
3
1
2
Fig. 26: Illustration of the switching points
with a float switch or electrodes in the “fill”
operating mode using the example of one
pump
1 Pump On
2 Pump OFF
3 High water level
4 Min. water level
5 Dry-running level in the well
Up to a maximum of six float switches or electrodes can be connected. This can be used to
control two pumps:
• Pump 1 On
• Pump 2 On
• Pump 1 and 2 Off
• Min. water level in the tank to be filled
• High water level
• Dry-running level in the well (separate float switch at the “Extern OFF” input)
The float switch should be equipped with a NO contact: Once the switching point has been
reached, the contact is closed.