30 E-Series Installation Manual
Third party alarms only
The following guidelines are considered good practice when connecting a third party
high output external alarm or inductive load to an E-Series Display. If you are in any
doubt as to how to make such connections, please consult an authorized installer.
Connecting a high-power output
The E-Series alarm signal is an open collector output limited to 100mA at 24 volts. If
you need a higher current or voltage, you should connect the E-Series via an external
relay.
Connecting an inductive load
When connecting the output to a relay or other inductive device, a spike suppression
diode e.g. 1N4001, should be fitted.
D9018-1
Alarm out
(open collector)
SeaTalk data
SeaTalk return
SeaTalk power
Screen
(RF ground/earth)
Red
Alarm return
Unsheathed/
drain wire
Brown
White
Yellow
Black
D7482-2
Alarm
(100mA max)
Alarm
out
Alarm
return
Battery -
Battery
+
Connections for external alarm
High current load
Battery
+
Battery
--
Alarm return
Alarm out
Relay
Suppression
diode
E-series display
D8136_1
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