Arc Monitor functions
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1: Arc Monitor The Arc Monitor is the heart in the system and handles signalling and detec-
tion. The HMI handles conditions, errors, and more. The system can be con-
figured to trip selected breakers, depending on which sensor detects light.
The DIP-switches that take care of this function also handle settings like
auto-reset and Current Sensing Units. Energy is stored in the Arc Monitor for
operation up to 0.2 s if the supply voltage fails. This is sufficient to close the
tripping contacts even during a short time of power loss.
2: Human Machine
Interface, HMI
The Human Machine Interface is used for all communication with the user
and also to confirm any changes. It can be mounted both on the product and
on the cabinet door. This is preferred to be able to get information about trips
without opening the cabinet after a trip.The HMI has a non-erasable memory
which holds trip logs and error logs even after power loss including a time
stamp.
The Arc Monitor can handle a second HMI module.
1, Arc Monitor 8 HMI external connection
2 Human Machine Interface, HMI 9 Power supply
3 Extension module plug in area 10 Solid state tripping contacts
4 DIP switch 11 Signal relays
5 Detector inputs 12 Detector (not included with
the Arc Monitor)
6 Current Sensing Unit, CSU,
inputs
13 Extension (option)
7 Current Sensing Unit, CSU,
output
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