Simrad AP70 Installation Manual download pdf (Page 35)

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Wiring | AP70/AP80 Installation Manual

External I/O

Handshake

Connects to: SD80 board (in SD80, AC80S or AC85 Computer) or AD80 board (in AD80,

AC80S or AC85 Computer).

The SD80 and AD80 boards have two identical galvanic isolated handshake digital I/O ports

that can be sw conﬁ gured for various applications like interface to steering gear control,

hand steering override, watch alarm, direct i/o type central alarm panel, pulse log input and

pendulum ferry function.

Max

100 mA

AD80/SD80 BOARDEXTERNAL

INTERFACE

OUT A

OUT B

IN +

RET

HS..

AD80/SD80,

AC80S or AC85

Computer

5 mA

OUT A

OUT B

IN +

RET

The LED is green when handshake output is on.

 Note: The Handshake must be deﬁ ned as described in “Dockside - Drive system” on page

42.

Central alarm panel with direct I/O interface

Connects to: AP70/AP80 Control unit, and AD80 board or SD80 board.

The interfacing described below applies for central alarm panels that use direct lines for

alarm, mute and acknowledge. For alarm panel using serial interface, refer to “IEC61162-1/2

(NMEA 0183) devices” on page 23.

The autopilot system will have two cable connections to a Central Alarm panel;

• one from the autopilot control unit

• one from the autopilot computer

From the autopilot control unit we are using the same two wires (red and blue) as for external

alarm relay connection.

Under normal operation you will see 12/24 V between these two wires. In an alarm situation,

or when power is lost, you will see no voltage.

From the autopilot computer we are using the handshake connection on the SD80 or AD80

board for alarm mute and acknowledge.

HS1

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Simrad AP70 Installation Manual Page 35

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