1: Arc Monitor; 2: Human Machine Interface, Hmi - ABB Arc Guard System TVOC-2 Installation And Maintenance Manual

1: Arc Monitor

2: Human Machine
Interface, HMI
1, Arc Monitor
2 Human Machine Interface, HMI 9
3 Extension module plug in area
4 DIP switch
5 Detector inputs
6 Current Sensing Unit, CSU,
inputs
7 Current Sensing Unit, CSU,
output
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.
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.
Arc Monitor functions
8 HMI external connection
Power supply
10 Solid state tripping contacts
11 Signal relays
12 Detector (not included with
the Arc Monitor)
13 Extension (option)
17