Wilo Control EC-WP Series Installation And Operating Instructions Manual page 28

en
6.6.9 "Drain" control mode: 1x well,
1x pump, 2x float switches or elec-
trodes
ON
W1
OFF
DR
P1
Fig. 35: Application diagram
1
6
4
4.3 4.2
Fig. 36: Screen display
Function
Terminal overview symbol
Float switch operating principle
Top contact
Bottom contact
Menu and value to be set
28
ON
OFF
DR
When the fill level in the well rises and the switch on-level is reached, the pump switches on.
The well is drained. When the switch off level is reached, the pump switches off after the set
switch-off delay has elapsed.
To protect the pump from a dry run, install an additional float switch or electrode in the well:
• If the water level falls below the dry running level, the pump switches off. An error mes-
sage appears on the display and an alarm sounds.
• If the dry-running level is exceeded, the alarm and error message are automatically reset.
1 Current pump status
2
2 Standby pump activated
3 Control mode
3
4 Switching status of the float switch/electrode
6 Fieldbus active
4.1
Overview of terminals
DR OFF
25 26 27 28
1/(2)
closed closed
Open Open
Required menu settings
Switch-on level
Switch-off level
Dry-running level
ON -
29 30 31 32
off
on/(off)
1 2
1/(2)
closed −
Open −
Installation and operating instructions • Wilo-Control EC-WP • Ed.01/2024-08
4.1
4.2
4.3
- - -
33 34 35 36 45 46
4-20 mA
In
off
on/(off)
2 2
− − −
− − −
DR
OFF
ON
-
49 50
2
closed
Open