Wilo Helix VE 10 Series, Installation And Operating Instructions Manual

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Connections and control rules of each operating
mode:
Mains connection Power terminal block
Plug the 4-conductor cable into the power terminal block
( earth).
Input/output connection Input/output terminal block
• 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).
Example: float switch, low­water pressure regulator, etc.
L1 L2 L3
Remote
control
ON/OFF
Unused
External
setpoint
20
mA/10
V
sensor
IN2 IN1
GND
GND +24 V
Aux Ext. Off MP 20 mA/10 DDG
GND...
In2...
GND...
+24
V...
In1...
Signal connections and control rules
Connection
Signal
Operating modes Setting
Current Voltage
see the diagrams below
• In “Speed stage control” mode ... speed, manual
C1 / / /
... speed, external control
C1 C2 S3 S4
• In “Constant pressure: p­c” mode
• Control with a relative pressure sensor
• In “Δp­c” mode
• Control with a differential pressure sensor
... of the setpoint with
the rotary knob C1 C3 S1 S2
... by an external setpoint
C1
C2 S5 S6
C3 S1 S2
• In the mode “Variable pressure: Δp­v”
• Control with a differential pressure sensor
... of the setpoint with
the rotary knob
C1 C3 S1 S2
... by an external setpoint
C1
C2 S5 S6
C3 S1 S2
• In “PID control” mode
• Control with a temperature sensor or delivery
rate sensor...
... of the setpoint with
the rotary knob
C1 C3 S1 S2
... by an external setpoint
C1
C2 S5 S6
C3 S1 S2
English
WILO SE 03/2019