Simrad AUTOPILOT SYSTEM AP50 - Manual (Page 90)

Simrad AP50 Autopilot
88
20221032B
External Alarm (Non Wheelmark System)
The external alarm circuit has an open collector output for an
external alarm relay or buzzer. The alarm voltage is the same as
the main supply voltage. The maximum load on the external
alarm output is 0.75 ampere.
Figure 4-13 External Alarm Connections (Non Wheelmark System)
External Alarm (Wheelmark System)
Note ! Wheelmark installation requires separate monitoring of power
failure.
Note that Simrad does not supply an external alarm unit,
required for a Wheelmark system. The diagram below shows
how an arrangement can be made. The buzzer shall provide
between 75 and 85 dB of power.
The relay voltages are determined by the autopilot Mains supply
and the alarm voltage supply.
Figure 4-14 External Alarm Connections (Wheelmark System)