Wilo Helix VE 52 Einbau- Und Betriebsanleitung Seite 50

English
Mains connection
Plug the 4-conductor cable into the power terminal block
(phases + earth).
Input/output connection
• The cables of the sensors, the external setpoint and the
remote control (Ext. Off) must be shielded.
• Remote control enables the starting or deactivation of the
pump (potential­free), this function has priority over the
other functions.
• This remote control can be removed by shunting the
terminals of the remote control (Ext. Off).
Connections and control rules of each operating
mode:
Signal connections and control rules
Operating modes
• In "Speed stage control" mode
• In "Constant pressure: p­c" mode
• Control with a relative pressure sensor
• In "Δp­c" mode
• Control with a differential pressure sensor
• In the mode "Variable pressure: Δp­v"
• Control with a differential pressure sensor
• In "PID control" mode
• Control with a temperature sensor or delivery
rate sensor...
50
Power terminal block
L1 L2
Input/output terminal block
Ext. Off
Aux
Remote
control
ON/OFF
Example: float switch, low­water pressure regulator, etc.
Connection
Setting
see the diagrams below
... speed, manual
... speed, external control
... of the setpoint with
the rotary knob
... by an external setpoint
... of the setpoint with
the rotary knob
... by an external setpoint
... of the setpoint with
the rotary knob
... by an external setpoint
L3
MP
20 mA/10 DDG
IN2 GND IN1 GND +24 V
Unused
Signal
Current
C1 / /
C1 C2 S3
C1 C3 S1
C2 S5
C1
C3 S1
C1 C3 S1
C2 S5
C1
C3 S1
C1 C3 S1
C2 S5
C1
C3 S1
WILO SE 03/2019
Voltage
/
S4
S2
S6
S2
S2
S6
S2
S2
S6
S2