Wilo Control EC-WP Series Installation And Operating Instructions Manual page 34

en
6.6.15 "Constant pressure control p-c"
control mode: 1x pump, with pres-
sure switch
p
2
Fig. 47: Functional diagram
1
6
Fig. 48: Screen display
Function
Terminal overview symbol
Float switch operating principle
Top contact
Bottom contact
Pressure switch operating principle
Contact closed
Contact open
Menu and value to be set
34
1 Activation point
2 Deactivation point
NOTICE! If a pressure switch is used, only one pump can be controlled. The pressure switch
used detects the actual pressure value and defines the activation and deactivation threshold:
• If the pressure in the system falls below the activation threshold, the pump switches on.
• If the deactivation threshold is exceeded, the pump switches off after the set switch-off
1
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-
Q
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
3 Control mode
4 Switching state of pressure switch
3
6 Fieldbus active
4
Overview of terminals
DR -
25 26 27 28
1/(2)
closed −
open −
− −
− −
Required menu settings
ON/OFF -
29 30 31 32
off
on/(off)
1 2
1/(2)
− −
− −
Pump off −
Pump on −
Installation and operating instructions • Wilo-Control EC-WP • Ed.01/2024-08
- - -
33 34 35 36 45 46
4-20 mA
In
off
on/(off)
2 2
− − −
− − −
− − −
− − −
-
49 50
2
-
-
−
−