VAMP Ltd Arc protection system
User manual
VAMP 220 / 220R
VM220.EN004 Vamp 24h support phone : +358 (0)40 573 6316
55
7. Operational measures
7.1. Arc faults
7.1.1. Arc fault tripping alarm
When an arc fault trip occurs, an alarm signal is obtained via
the trip alarm output contact (see section 5.3.5). At the same
time, the leds of the tripping relays are lit on the control panel
of the master unit, thus, showing which trip outputs that were
activated.
In the RUN mode of the master unit, the display shows the
information of the last sensor that was activated. If one or more
BI/O lines were activated, the display will show the identifiers
of the activated BI/O lines.
To reset a trip alarm, push any button on the control panel.
The trip alarm will remain active until it is reset.
7.1.2. Reading arc fault information
Each time an arc sensor is activated, the address of the sensor
is stored in the memory of the master unit. Up to three
addresses are stored, that is, the addresses of the three sensor
that last were activated. When an arc or overcurrent signal is
received from a BI/O line, the identifier of the BI/O line is
stored instead.
To read the recorded arc fault information:
1. Enter RUN mode (if not already active) using the up and
down arrow buttons.
2. Browse through the stored codes using the left and right
push-buttons. See Figure 7.1.2-1.
A sensor address is given as slave address and connector
number of the sensor. The BIO lines are given by their
identifiers, that is, La, Lc and Ib (see section 5.7. ) along with
the word BIO.
The recorded values can be erased from the memory as follows:
1. Activate the RUN mode by pushing the S button.
2. Push the E button.
If the operator does not erase the display codes from the
memory, they will be erased automatically within two hours.
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