Wilo DrainAlarm Manual page 11

4
6 7
Fig. 2: Connection terminals
6.5.2 Alarm output connection (not po-
tential-free, only DrainAlarm)
12 V
6
1 2
Fig. 3: Connection terminals
6.5.3 Alarm output connection (poten-
tial-free)
3 4 5
Fig. 4: Connection terminals
Installation and operating instructions • Wilo DrainAlarm/DrainAlarm FIRST • Ed.01/2024-08
Connect a float switch for level monitoring at the alarm input. It is not possible to connect a
level sensor or an electrode!
• Terminals: 6 and 7
• Contact type: Normally open contact
• Alarm signal: You can configure the operation of the alarm input via the jumper (see sec-
tion "Structure [" 6]"):
7
–
Jumper on B/C: Alarm with closed contact (factory setting)
A B C
–
Jumper on A/B: Alarm with open contact
Insert the connection cable laid on-site through the threaded cable glands and secure. Con-
nect the wires to the terminal strip according to the connection diagram.
A DC voltage is applied to the alarm output when an alarm is triggered. This can be used to
operate other alarm signals (horn, flashlight, etc.).
• Terminals: 1 (+) and 2 (-)
• Max. load: 12 V=, 350 mA
The battery provides the power supply for the alarm output. The maximum operating time
of the alarm output is approx. 60 minutes, depending on the connected load. The power
supply unit provides the power supply for the alarm output if the battery is drained. The
battery meanwhile is charging at the same time.
Insert the connection cable laid on-site through the threaded cable glands and secure. Con-
nect the wires to the terminal strip according to the connection diagram.
The alarm signal can be sent to external alarm signals or controls via a potential-free
changeover contact.
• Terminals: 3/4 − NO contact (NO)
• Terminals: 4/5 − NC contact (NC)
• Max. switching capacity: 250 V AC/DC, 4 A
5
CAUTION
Property damage due to external voltage!
An external voltage which is applied destroys the component.
• Do not apply external voltage (connect potential-free).
DANGER
Risk of fatal injury due to electrical current!
The external electrical power supply is also present at the terminals when
the switchgear is switched off!
• Disconnect the external power supply before any work.
en
11