Wilo Control EC-L, Installation And Operating Instructions Manual

Page: 25 / 64

en
Installation and operating instructions • Wilo-Control EC-L • Ed.04/2022-09 25
By inserting a rechargeable battery, a mains-independent alarm signal can be issued in the
case of a power failure. An audible, constant tone is emitted as an alarm. Observe the fol-
lowing points:
• Rechargeable battery type: E-Block, 9 V, Ni-MH
• In order to ensure trouble-free operation, charge the rechargeable battery prior to inser-
tion or charge it for 24 h in the switchgear.
• The capacity of the rechargeable battery will fall if the ambient temperature drops. The
alarm running time is reduced.
✓ Power supply connected.
✓ Main switch in the “0/OFF” position!
NOTICE! Switchgear without main switch: Disconnect power supply with mains
isolator!
1. Insert the rechargeable battery into the designated holder, see “Overview of compon-
ents”.
WARNING! Do not insert any batteries! There is a risk of explosion!
CAUTION! Observe the correct polarity!
2. Plug in the connection cable.
⇒ Alarm sounds!
3. Turn the main switch to the “1/ON” position.
NOTICE! Switchgear without main switch: Establish power supply by means of
mains isolator!
⇒ Alarm off!
▶ Rechargeable battery installed.
6.5.18 Connection ModBus RTU
CAUTION
Do not apply external voltage!
An external voltage which is applied destroys the component.
See Overview of components [
}
14] for position numbers
9 ModBus: RS485 interface
11 ModBus: Jumper for termination/polarisation
The ModBus protocol is available for connection to a building management system. 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.
Observe the following points:
• Interface: RS485
• Field bus protocol settings: Menu 2.01 to 2.05.
• Terminate switchgear: Plug in jumper J2.
• If the ModBus requires a polarisation, plug in jumpers “J3” and “J4”.
7 Operation
DANGER
Risk of fatal injury due to electrical current!
Only operate the switchgear when closed. There is a risk of fatal injury
from open switchgear! Electrical work on the internal components must
be carried out by a qualified electrician.
7.1 How it works
In automatic mode, the pumps are switched on and off depending on the water level. Once
the first activation point has been reached, pump 1 switches on. Once the second activa-
tion point has been reached, pump 2 switches on after the activation delay has elapsed.
During operation, a visual indicator appears on the LCD display and the green LED lights up.
Once the deactivation point has been reached, both pumps are switched off after the deac-
tivation delay has elapsed. To optimise pump running times, pump cycling is carried out
every time the pump is switched off.