Specifications

INSTALLATION AND COMMISSIONING
EN / GMDSS Mass Charger Alarm Interface / January 2013 / Copyright © 2013 Mastervolt 11
4.3 CONNECTION
WARNING
Disconnect the electrical power:
• Switch off all consumers;
• Switch off all charging systems;
• Remove all battery fuses;
• Check with a suitable voltmeter
whether the entire DC installation is
voltage free.
1 Depending on the model of the GMDSS Interface:
• Make 168 x 53 mm cut out in the instrumentation
panel, or
• Integrate the GMDSS Interface in your
Mastervision panel, or
• Replace the existing the front cover plate of the
battery charger by the GMDSS Interface
2 Install the shunt of the GMDSS Interface as close as
possible to the battery bank.
3 Disconnect the wiring from the negative battery pole.
4 See figure 4. Place the shunt between the negative
wires and the negative battery pole using the heavy
duty battery cable.
Do not exchange the DC wiring of the load
side with the battery side.
5 Run the 6 pole modular communication cable
between the battery charger and the GMDSS
Interface.
6 Insert the RJ12 connector into modular socket at the
rear side of the GMDSS Panel.
7 Insert the RJ12 connector on the other side of the
communication cable into the RS232 port inside the
connection compartment of the Mass series battery
charger. Refer to the user’s manual of the Mass
battery charger, section “Connection of accessories”
for details.
8 Connect the other wiring of the GMDSS Interface as
indicated in figure 4 but do not place the fuses yet!
Do not exchange the twisted wires: the load
side must be connected to terminal 5, the
battery side must be connected to terminal 6.
Figure 3: Shunt connections.
9 Option: Connect the wiring of the auxiliary
components such as potential free relay contacts.
Refer to section 6.1.
Battery cables must be
connected here
Twisted wires must
be connected here