Wilo Control EC-L, Инструкция по установке и эксплуатации

Страница: 27 / 64

en
Installation and operating instructions • Wilo-Control EC-L • Ed.04/2022-09 27
7.2 Operating modes
NOTICE
Changing the operating mode
To change the operating mode, deactivate all pumps: in Menu 3.01, se-
lect the value „OFF“.
NOTICE
Operating mode after power failure
Following a power failure, the switchgear will automatically start up in
the last operating mode set.
The following operating modes are possible:
• drain
• fill
7.2.1 “Drain” operating mode The reservoir or pump chamber is drained. The pumps are activated when the level rises and
switched off when the level falls. This control is mainly used for
water drainage .
Level control for float switch or electrodes
4
3
1
2
5
Fig. 24: Illustration of the switching points
with a float switch or electrode in the “drain”
operating mode using the example of two
pumps
1 Pump 1 On
2 Pump 2 On
3 Pump 1 and 2 Off
4 Dry-running level
5 High water level
Up to a maximum of five 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
• Dry-running level
• High water level
The float switch should be equipped with a NO contact: Once the switching point has been
reached, the contact is closed.