External Alarm (Wheelmark System); Drive Unit Installation - Simrad AP50 Installation Manual

Simrad AP50 Autopilot
Note !

2.10 Drive Unit Installation

20

External Alarm (Wheelmark System)

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 2-14 External Alarm Connections (Wheelmark System)
The relation between drive units, drive unit voltage, input
voltage, drive output, and interfacing to steering gear are shown
in Table 2-2 and Table 2-3. The AP50 system detects whether a
reversible motor or a solenoid is connected and outputs the
correct drive signal automatically.
Refer to the connecting diagrams for the different drive units on
pages 22 through 24.
Installation instructions for the drive units are found in the
manuals for the individual units.
The maximum drive current capabilities of the J50 and J50-40
Junction Units are different. Use the table below as a reference
and observe the notes.
20222469 / B