Wilo Control EC-L, Installation And Operating Instructions Manual

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22 Installation and operating instructions • Wilo-Control EC-L • Ed.04/2022-09
Fig. 17: Connection overview symbol
Remote deactivation of all pumps can be performed using a separate signal transmitter:
• Float switch
• Electrode
–
Only Control EC-L1 ... and EC-L2 ...
–
Hardware version 2 or higher
–
Connection is protected against reverse polarity!
The input acts as a normally closed contact (NC):
• Float switch closed/electrode immersed: Pumps enabled
• Float switch open/electrode not immersed: all pumps deactivated – the display shows the
“Extern OFF” symbol.
If the alarm is activated in menu 5.39, in the “fill” operating mode, an audible alarm
sounds in addition to the symbol appearing.
The terminals are fitted with a converter bridge at the factory.
NOTICE! Remote deactivation is prioritised. All pumps are deactivated independently of
the level measurement. Manual mode and forced switch-on of the pumps is not possible!
Insert the connection cables laid by the customer through the threaded cable glands and se-
cure. Remove the converter bridge and connect the wires to the terminal strip according to
the connection diagram.
Use the terminal number shown in the connection overview on
the cover.
6.5.11 Connection of a level actual value
display
CAUTION
Do not apply external voltage!
An external voltage which is applied destroys the component.
0-10 V
Fig. 18: Connection overview symbol
The actual level value is exported via a separate output. A voltage of 0 ... 10 V= is provided
for this at the output:
• 0 V = level sensor value “0”
• 10 V = level sensor upper limit
Example:
–
Level sensor measurement range: 0 ... 2.5 m
–
Display range: 0 ... 2.5 m
–
Setting: 1 V = 0.25 m
Insert the connection cables laid by the customer through the threaded cable glands and se-
cure. Connect the wires to the terminal strip according to the connection diagram.
Use the
terminal number shown in the connection overview on the cover.
Activate the function in menu 5.07 to output the actual level value.
6.5.12 Collective run signal (SBM) con-
nection
DANGER
Risk of fatal injury due to an external electrical power supply!
The external electrical power supply is also present at the terminals when
the main switch is switched off! There is a risk of fatal injury!
• Disconnect external power supply before any work!
• Electrical work must be carried out by a qualified electrician!
• Observe local regulations!