Bluelab Dosetronic Solenoid Kit - Manual (Page 19)

15
Version S1.3 : 260511
Bluelab Dosetr
onic Solenoid Kit
Bluelab Corporation Limited
2.12 Wiring Alarm and External Lockout
(optional)
External alarm
To connect an external alarm to your system,
put a wire on each side of the closing contacts
marked EXT ALARM.
Note: The external alarm needs to have an
independent power source.
External lockout
To enable the external lockout function on your
Dosetronic, a switch needs to be connected to
the external lockout wiring terminal on the alarm
circuit board (see diagram on page 14). There
are two types of switches that can be wired in:
those that are normally open and those that are
normally closed.
For example: If you connect a flow switch (that
opens when water stops flowing) to the normally
closed port, the external lockout function will
sense that the water has stopped and stop your
system from dosing.
Note: If you are not using any NC switches in
your system, ensure factory link is installed.
Common
Normally Closed
Normally Open
Connect multiple normally
closed switches in series
Connect multiple normally
open switches in parallel
2
- +
EXT ALARM
Refer to specifications for
maximum power rating
Parallel
Series
COM
NC
NO
COM
NC
NO
Note: You can have both NC and NO combinations connected
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