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TECHNICAL DATA
16 Copyright © 2013 Mastervolt / January 2013 / GMDSS Mass Charger Alarm Interface Copyright / EN
6 TECHNICAL DATA
6.1 WIRING DETAILS GMDSS INTERFACE
Figure 8: overview of the terminals
Terminal Designation Description
1 – SUPPLY DC Power Supply input, 8-32 V DC
2 + SUPPLY
3 – VSENSE Voltage Measurement 0..62V DC
4 + VSENSE
5 LOAD SHUNT Current measurement 500A / 50mV
6 BAT SHUNT
7 GND FAILURE REMOTE Common GND for terminals 8 to 12
8 DC- FAILURE REMOTE +5V / max 50mA output, active in case of DC Status alarm
9 CH- FAILURE REMOTE +5V / max 50mA output, active in case of Charger alarm
10 AC FAILURE REMOTE +5V / max 50mA output, active in case of AC Mains
11 RST FAILURE REMOTE Input external mute button
12 +BZ FAILURE REMOTE +5V output for external mute button
13 NO - DC ALARM This contact is closed to C - DC ALARM (terminal 14) when the DC is in range (status:
OK)
14 C - DC ALARM C Common
15 NC - DC ALARM This contact is closed to C - DC ALARM (terminal 14) when the DC is out of range
(status: Alarm)
16 NO – CHARGE ALARM This contact is closed to C – Charger (terminal 17) when the battery charger is
working properly (status: OK)
17 C - CHARGE ALARM Common
18 NC - CHARGE ALARM This contact is closed to C – Charger (terminal 17) when the battery charger is not
working properly (status: Alarm)
19 NO - AC ALARM This contact is closed to C – AC mains (terminal 20) when the AC voltage is in range
(status: OK)
20 C - AC ALARM Common
21 NC - AC ALARM This contact is closed to C – AC mains (terminal 20) when the AC voltage is out of
range (status: Alarm)
22 X - NA Not connected
23 EXT – 5V. /50mA GND Aux. Power supply
24 EXT + 5V. /50mA +5V / max 50mA output Aux. Power supply (short circuit protected)
RJ12 Mass Charger QRS 232 QRS. 232 communication to Mass Charger, 6 pole, RJ12, cross wired
See section 3.4 for an overview of conditions for the alarm functions
1 12 13 24
16


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