Raymarine ST50 plus Instruction Manual

Distributed by
Any reference to Raytheon or
RTN in this manual should be
interpreted as Raymarine.
The names Raytheon and RTN
are owned by the
Raytheon Company.

Nautech Limited, Anchorage Park, Portsmouth
PO3 5TD. England
Telephone [phone] I. Fax [phone]
DEPTH
Operation and
Installation
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ST50 Plus Depth Operation and Installation Handbook
Autohelm and SeaTalk are registered Trade Marks of Nautech Limited
Autohelms policy of continuous improvement and updating ma); change product specifications without
prior notice
Copyright Nautech 1993

ST50 plus Depth Operation and Installation Handbook
Package Contents
The following items are included in the ST50 Plus Depth package:
1. ST50 Pius Depth control head
2. Fixing studs (2 offI
3. Thumb nuts (2 oftI
4. Fitting template
5. Power cable
6. Depth transducer (through hull) with 14m(45ftI of cable
7. Control head cover
8. Operation and Installation handbook
9. Worldwide Setice Cenb-e handbook
10. Warranty document
11. Security code sticker
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ST50 plus Depth Operation and Installation Handbook
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ST50 Plus Depth Operation and Installation Handbook
Contents
Introduction
.........................................................................
Chapter 1: Control Head Installation
.........................................
1.1 Sing ............................................................................
1.2 Mounting Procedure
........................................................
1.3 Power Supply (stanchalone operation)
..................................
t
1.4 Power Supply (SeaTalk operation)
..................... ;‘.
............... f
1.5 Connection of Separated Instruments
.................................
;
1.6 Ring Connection
............................................................. I
1.7 Connection to SeaTalk Compatible Autopilots
........................ I
Chapter 2: Transducer Installation
C
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2.1 Connection to the Control Head
C
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m
2.2 Transducer Selection
C
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2.3Transducer Installation c
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Chapter 3: Fault Finding and Maintenance
............................. 13
3.1 FaultFinding ............................................................... .13
3.2 Maintenance
............................................................... 14
Chapter 4: Operation
..........................................................
15
4.1 DepthKey ..................................................................
.16
4.2AarmKey .................................................................... 18
4.3 Dffset Key
...................................................................
20
4.4 Reset Key
................................................................... 21
4.5 Display Contrast
...........................................................
22
Chapter 5: CODE Lock Security
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23
Chapter 6: Calibration
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27
6.1 initial Calibration ............................................................
28
6.2 Intermediate Calibration
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30
6.3 Extended Calibration
...................................................... 32
Chapter 7: General Specification
..........................................
35

ST50 Plus Depth Operation and Installation Handbook
ST50 plus Depth Operation and Installation Handbook
Intmduction
The ST50 Plus Depth is a SeaTalk compatible, multifunction instrument that
employs a powerful echo sounder to give excellent performance over a wide
range of sea conditions.
Deep, shallow, anchor watch alarms can be set to provide visual and audible
warnings when the water depth reaches selected thresholds.
The ST50 Plus Depth can be configured to operate as a master unit or a
dedicated repeater. Al settings are stored in permanent memory and
retained even when the power source is disconnected.
The ST50 Plus Depth also incorporates a securii feature to protect
instruments mounted in vulnerable areas such as the cockpit, helm or mast.
Thank you for purchasing an Autohelm product May we take this opportunity
towishyouyearsoftroublefreeoperation.

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ST!50 Plus Depth Operation and htaliation Handbook Chapter 1: Confrol Head Installation
Chapter i: Coniroi i-&j ins&&h
r llOmm(4.33in) r,
38 .75mm
(1.5in)
1.1 Sing
The ST50 Plus Depth is designed for above or below deck installafion
where it is:
 Easily readable by the helmsman
 Protected against physical damage
 At least 230mm (gin) from a compass
 At least 5&m (20in) from radio receiving equipment
 Accessible from behind for ease of installation and cable running
Caution:
To prevent moisture forming on the display window, the ST50 Plus
Depth ‘breathes’ through a small vent in the cable boss. Ihere-
fore, the control head must be sited where the rear case is
protected from contact with water.
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,’ ST!% plus Depth Operation and Installation Handbook
1 Cable boss 2 Fiiing studs 3lhumb nuts 4Gashet
1.2 Mounting Procedure
1. Make sure that the selected location is clean, smooth and flat.
2.
Apply the self-adhesive template (supplied) to the selected location and
mark the centres for the fHing studs (2) and the cable boss (1).
3. Drii two 4mm (5/32in) clearance holes for the fixing studs (2) through
the bulkhead. Remove the template.
4. Cut the clearance hole for the cable boss (1) using a 50mm (2in)
diameter cutter.
5. Screw the two fixing studs (2) into the control head.
6. Pass the SeaTalk cable and transducer tails through the cable-boss (1)
clearance hole.
7. Assemble the contiol head to tie bulkhead and secure from behind
using the thumb nuts (3).
Note:
The rear case is fitted with a foam gasket to form a water-tight seal between
the instrument and the selected installation face. Under no circumstances
must silicone greases be applied to this gasket as an additional method of
sealing-the silicone will expand and distort the
rear case.
ChaMer 1: Control Head Installation
Bracket Mounting
The ST50 Plus Depth can, as an alternative, be bracket mounted using the
Autohelm Mounting Kit.
Flush Mounting
A flush mounting kii is available for installations where a flush mount is
required or more desirable. Full installation instructions are provided with
the kit.
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ST50 Plus Depth Operation and ImtaUation Handbook Chapter I: Control Head Installation
1.3 Power Supply (stand-alone operation)
.I
1. Connect the 2m (6ft.l power supply cable directly to the distribution
W.
2. Cut the cable to length and connect the red wire to the +12V terminal
and screen to the OV terminal.
3. Cut back and insulate the yellow wire.
4. Protectthe circuiiwith a SAcircuiibreaker.
Longer runs to the power supply can be made using the 9m (3OftI SeaTalk
Extension Cable D131).
1.4 Power Supply (SeaTalk operation)
All instmrnents in a SeaTalk system receive power and information from the
SeaTalk bus. Each instrument has two SeaTalk connectors (3 pin) on
15Omm (6in) tails. To supply power and information to the instrument simply
plug adjacent tails into the ST50 Plus Depth tails.
” :s.
To transducer
,:: ::.
1,. :
.l’.,
SeaTalk tails SeaTalk tails D,,,.
1.5 Connection of Separated lnsttuments
Separated instruments can be connected using one of the range of SeaTalk
Extension Cables. These cables are supplied with a SeaTalk connecMitted
to each end. Ajunction boxcan be used tojointhecableifitis cutforeasier
routing or shortening.
If preferred, any 2 core, screened cable conforming the following specifiMion
may be used instead of the SeaTalk cable.
 22 AWG, 2 core screened cable with a minimum copper area of 0.5mmz.
Junction
box
rYeUowl
Screen J LRed J

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ST50 Plus Depth Operation and Installation Handbook
1.6 Ring Connection
Chapter 2: Transducer Installation
Installations with large numbers of instruments on a SeaTalk bus may require
a second ringmain connection to the power supply breaker to prevent
excessive voltage drops. Refer to the foflowing list to determine whether a
second ring main is necessary.
Cable run upto 10m (3%)
Single connection: 13 instruments maximum
Second connection: 26 instruments maximum
Cable run upto 20m (66ft)
Single connection: 7 instruments maximum
Second connection: 13 instruments maximum
The second ringmain should be connected to the spare lead on the last
instrument in the chain and directed back to the circuit breaker.
2.1 Connection to the Control Head
The depth transducer is supplied, as standard, with a through hull fling and
14m (45ftI of cable. The cable is equipped with a SeaTalk connector that
plugs into a control head connector.
1.7 Connection to SeaTalk Compatible Autopilots
If the installation includes a SeaTalk compatible Autopilot the ST50 instru
ments may be connected to the SeaTalk bus at any point. No independent
connection to the 12V power supply is necessary as the instruments receive
power from the Autopilot course computer.
To autopilot
SeaTalk BUS
Connection
To any further
ST50 Instruments
or Autopilot
Control Units “,,u-
Chapter 2: Transducer installation
2.2 Transducer Selection
The type of depth transducer used is governed by the hull material. The
following list shows the appropriate transducer for hull type.
Transducer Type Hull Material
ZO91 Through Hull Plastic: GRP (Glass Reinforced Plastic), Steel and
Aluminium
Z118 Through Hull Bronze:
2120 Retractable througb
hull:
Wocd
GRP (Glass Reinforced Plastic), Steel and
Aluminium
2.3 Transducer Installation
All depth transducers are supplied with detailed installation and maintenance
instructions.
These instructions, together with the following notes, should be read
thoroughly before attempting to install the transducer.