Simrad GN70, Operator And Installation Manual

Page: 80 / 100

80 |
Wiring | GN70/MX610/MX612 Operator and Installation Manual
Connecting the MX61xJB computer to the N2K bus
The MX61xJB smart junction box can connect anywhere on the N2K bus back bone by using
drop cables connected to the SIMNET connector and a female connector on the Micro-C
T-joiner.
Drop cables of varying lengths can be purchased from local SIMRAD dealers.
MX61xJB connection to NMEA 2000 Bus
Alarm interface
External alarm
An external alarm can be connected to the GN70/MX61x display unit. The alarm signal has
an open contact for an alarm buzzer or an external alarm relay as illustrated below. The alarm
voltage is the same as the main supply voltage. The maximum load on the external alarm
output is 0.75 Amp.
Alarms are configured globally in the system, i.e. they can be configured on one unit and
seen, heard and acknowledged from all other SIMRAD control units.
ALARM
RELAY
12 - 24 V DC
+ _
1
4
3
2
External alarm connection
Pin Color Description
1 Black Battery (-)
2 Blue External Alarm
3 Yellow External MOB
4 Red Battery (+), 12 - 24 V DC
MX61xJB PCB
SIMNET
NE
T-S
NE
T-
C
NE
T-H
NE
T-L
RED BLK WHT BL
U
MX61xJB
Computer
N2K Bus
1
1 8
2 3
4