Electrical Connection - Wilo DrainAlarm/-GSM Notice De Montage Et De Mise En Service

INSTALLATION
4. Fix the alarm switchgear to the wall.
5. Attach the cover to the housing again.
5.3.3. Monitoring a level
For level measurement, a corresponding signal
transmitter must be installed and connected.
• DrainAlarm: Float switch
• DrainAlarm GSM: Float switch or level sensor
The signal transmitter is to be provided onsite.
The signal transmitters must be installed in the
operating space in accordance with system's
installation plan.
Note the following points when using the float
switch:
• The float switch must be able to move freely in
the operating space (chamber, tank)!
• The switching point of the float switch must be
tested before connection to the alarm switchgear.

5.4. Electrical connection

POTENTIALLY fatal danger due to electrical
voltage!
The housing cover must be removed to
connect the individual signal transmitter. In-
correct electrical connections can cause fatal
electric shocks! The alarm switchgear must be
de-energised during connection.
• Pull the plug
• Disconnect the rechargeable battery
• Do not connect the system to the mains until
the end of the installation process.
• Electrical connections may only be carried out
by a qualified electrician approved by the local
energy supply company, in accordance with
locally applicable regulations.
DANGER - explosive atmosphere!
If the connected signal transmitters are used
in potentially explosive areas, they must be
connected via an intrinsically safe electric
circuit. If alarm signals are connected directly,
there is a risk of fatal injury due to explosions.
Connections must always be made by a quali-
fied electrician.
• The mains connection current and voltage must
be as stated on the rating plate.
• There must be a residual-current device (RCD) in
the supply line.
• Lay the power supply cable in accordance with
the valid standards/regulations, feed it through
the threaded cable connections and secure ac-
cordingly.
5.4.1. Connecting the alarm inputs: digital signal
transmitters
DrainAlarm
1x alarm input on the terminal strip (fig. 1,
item 4):
• Terminal: 6 and 7
• The connection must be potential-free.
• Contact type: Normally open contact
Installation and operating instructions Wilo DrainAlarm/-GSM
DrainAlarm GSM
• 1x alarm input on the terminal strip on the main
PCB (fig. 2, item 4):
• Terminal: 6 and 7
• The connection must be potential-free.
• Contact type: Normally open contact
• 5x alarm inputs on the terminal strip of the GSM
module (fig. 2, item 18):
• In1: Occupied! (Converter bridge to alarm out-
put on the main PCB)
• In2: Terminal 14 and 15
• In3: Terminal 16 and 17
• In4: Terminal 18 and 19
• In5: Terminal 20 and 21
• In6: Terminal 22 and 23
• The connection must be potential-free.
• Contact type: Normally open contact
5.4.2. Setting the functions of the digital alarm inputs
DrainAlarm
Jumper 1 (fig. 1, item 7) can be used to define
when an alarm is to be triggered: when the con-
tact is open or closed
• Jumper on contact B/C (standard setting): An
alarm is triggered when the contact is closed
• Jumper on contact A/B: An alarm is triggered
when the contact is open
DrainAlarm GSM
Jumper 1 (fig. 2, item 7) can be used to define
when an alarm is to be triggered on the alarm
input on the main PCB (terminal 6 and 7, fig. 2,
item 4): when the contact is open or closed
• Jumper on contact B/C (standard setting): An
alarm is triggered when the contact is closed
• Jumper on contact A/B: An alarm is triggered
when the contact is open
The function of the alarm inputs on the GSM
module is configured using the software.
5.4.3. Connecting the alarm inputs: analogue signal
transmitters (DrainAlarm GSM only)
Connection to the terminal strip of the GSM mod-
ule (fig. 2, item 18):
• Analogue 0-10 V:
• Terminal 24: -
• Terminal 25: +
• Analogue 4-20 mA:
• Terminal 26: -
• Terminal 27: +
The function of the analogue alarm inputs is
configured using the software.
5.4.4. Connecting external alarm signal (horn, flash
light)
If an alarm is signalled, there is a DC voltage at the
alarm output (DrainAlarm fig. 1, item 4/
DrainAlarm GSM fig. 2, item 4) for operating ex-
ternal alarm signals:
• Connected load: 12 VDC, max. 1 A
• Terminal 1: Plus (+)
• Terminal 2: Minus (-)
• Contact type: Normally open contact
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