Wilo Control EC-Booster Instrucciones De Instalación Y Funcionamiento página 61

6.5.9 Pressure sensor connection
4-20 mA
In
p
Fig. 14: Connection overview symbol
6.5.10 Connection to the dry-running
(low water level) protection
!
Fig. 15: Connection overview symbol
6.5.11 "Extern OFF" connection: Remote
deactivation
Fig. 16: Connection overview symbol
Installation and operating instructions Wilo-Control EC/ECe-Booster
Installation
NOTICE
Do not apply external voltage!
An external voltage which is applied destroys the component.
Pressure detection is performed using an analogue pressure sensor (4 – 20 mA).
Insert the connection cable laid by the customer through the threaded cable glands and
secure. Connect the wires to the terminal strip according to the connection diagram.
Use the terminal number shown in the connection overview in the cover.
NOTICE! Use shielded connection cables! Apply the shielding on one side!
NOTICE! Observe the correct polarity of the pressure sensor! Do not attach an active
pressure sensor.
NOTICE
Do not apply external voltage!
An external voltage which is applied destroys the component.
The low water level (dry-running protection) can also be monitored using a float- or
pressure switch:
▪ Contact open: dry running
▪ Contact closed: no dry running
The terminals are fitted with a converter bridge at the factory.
Insert the connection cable laid by the customer through the threaded cable glands and
secure. Remove the converter bridge and connect the wires to the terminal strip ac-
cording to the connection diagram. Use the terminal number shown in the connection
overview in the cover.
NOTICE
Do not apply external voltage!
An external voltage which is applied destroys the component.
Remote deactivation of all pumps can be performed using a separate switch:
▪ Contact closed: pumps enabled
▪ Contact open: all pumps deactivated – the display shows the "Extern OFF" symbol.
The terminals are fitted with a converter bridge at the factory.
NOTICE! Remote deactivation is prioritised. All pumps are deactivated regardless of
their actual pressure value. The pumps cannot be operated in manual mode!
Insert the connection cable laid by the customer through the threaded cable glands and
secure. Remove the converter bridge and connect the wires to the terminal strip ac-
cording to the connection diagram. Use the terminal number shown in the connection
overview in the cover.
en
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