Wilo Control EC-L1 Series Installation And Operating Instructions Manual page 24

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6.5.15 Individual fault signal (ESM) con-
nection
x
Fig. 22: Connection overview symbol
6.5.16 Connecting an external alarm sig-
nal
24 V
Fig. 23: Connection overview symbol
6.5.17 Installing the rechargeable battery
24
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!
A fault message is output for each pump (ESM) via a separate output:
• Contact type: potential-free NC contact
• Contact load:
–
Minimum: 12 V=, 10 mA
–
Maximum: 250 V~, 1 A
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. The number shown in
location "x" on the symbol indicates which pump it refers to:
• 1 = pump 1
• 2 = pump 2
• 3 = pump 3
CAUTION
Do not apply external voltage!
An external voltage which is applied destroys the component.
An external alarm signal (horn, flashing light, etc.) can be connected. The output is switched
in parallel to the collective fault signal (SSM).
• Alarm signal suitable for DC voltage.
• Connection load: 24 V=, max. 4 VA
• NOTICE! Observe the correct polarity when connecting!
• Activate output in menu 5.67.
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.
DANGER
Risk of fatal injury due to electrical current!
There is a risk of fatal injury when performing work on the open
switchgear! The components carry current!
• Have work carried out by a qualified electrician.
• Avoid contact with earthed metal parts (pipes, frames etc.).
NOTICE
Mains-independent alarm
The alarm sounds as soon as the rechargeable battery is inserted. The
alarm can only be switched off by removing the rechargeable battery
again or by connecting the power supply.
Installation and operating instructions • Wilo-Control EC-L • Ed.04/2022-09