Simrad AP70 Installation Manual page 50

50 |
Handshake Function
setting
FU-remote External FU/DP control
by command transfer
Alarm Interface to central
panel alarm panel with direct
I/O
P-log & Pulse log input, auto
Auto mode output
Pendulum
& WA
Pendulum feature
The pendulum feature is intended for pendulum ferries where it is required to turn the
heading 180° when the vessel is going «backwards».
The feature can be included in AP70/80 systems equipped with SD80 or AD80 boards. It can
only be used for NMEA 0183 heading sensors, RC42 and CDI80.
The function is activated by using an external switch. When the contact is closed the system
will add 180° to the heading received on the NMEA 0183 interface on SI80 and AC70. The
heading is changed before heading data enters the CAN bus network, and all instruments on
the bus will pick up the modified heading.
Configuration
The AP70/AP80 must be configured for the pendulum function as shown below.
Select Pendulum & WA for handshake 1 or 2, depending on physical connection of external
switch.
System configuration | AP70/AP80 Installation Manual
Description
When input contact is closed, a command transfer
dialogue is started (refer Command transfer
description in the AP70/AP80 Operator Manual).
When accepted, the output contact will close and
use the installed current or voltage input to the
RUD UI plug of SD80/AD80 board for follow up
rudder control. Output will open if control is taken
from another unit again.
Refer "Central alarm panel with direct I/O interface"
on page 36.
If a pulse log of 200 p/NM to the input, it will show
up as a speed source on the CAN network.
The output will be a closed contact whenever the
autopilot is in AUTO, NoDrift
The signal can be used for reducing oil flow to
rudder, watch alarm activate etc.
If input signal is closed, steering and monitor
compass will be offset by 180°.
Output contact will close for 0.5 sec when active
control unit is operated. Can be used for watch
alarm systems that require information about
operation of equipment.
NAV/TRACK
or mode.