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Vestfrostsolutions.com
Remote alarm function
Fig. Internal controller with built-in alarm relay
*) Configured by settings menu
Your device is equipped with a remote alarm
connection to send alarm signals to a building
management system, a monitoring unit, visual
or acoustical warning device etc.
The alarm output is managed by the built in
COM
controller of the unit.
NO/NC*
Alarm criteria may be too low temperature,
too high temperature, power failure, open
door or similar.
The alarm output is an electrical relay which
acts like a ON/OFF switch.
A OptoMOS relay with maximum switch
rating of 60V 3A is maintained by the build-in
controller unit. The relay can be set to nor-
mally open or normally closed in the settings
menu.
The relay terminals are explained this way:
COM:
COMMON terminal
NO/NC:
CLOSED terminal. Normal position is set in
the settings menu
An alarm interface cable of maximum
30 meters can be attached without the use of
tools to the 3-pole alarm clamp connector.
Wire thickness must be within 0.5mm2 to
2.5mm2 and fitted with core crimp terminals.
NORMALLY OPEN/ NORMALLY
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