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' Autohelm Raymarine: St50 Plus Multi Multi function Display St50 '




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Distributed by
Any reference to Raytheon or
RTN in this manual should be
interpreted as names Raytheon and RTN
are owned by the
Raytheon Company
Autohelm and SeaTalk are registered Trade Marks of Nautech policy of continuous improvement and updating may change product
without prior notice
Copyright Nautech 1993
Package Contents
The following items are included in the ST50 Plus Multi package
1 ST50 Plus Multi control head
2 Fixing studs 2 oftI
3 Thumb nuts 2 offl
4 Control head cover
5 Power cable
6 NMEA cable
7 Securii sticker
8 Fiing template
9 Operation and installation handbook
10 Worldwide Service Centre handbook
11 Warranty document
Contents
introduction 1
Chapter 1 Control Head Installation 3
11 Sing 3
12 Mounting Procedure 4
13 Power Supply standalone operation 6
14 Power Supply SeaTalk operation 6
15 Connection of Separated Instruments 7
16 Ring Connection 8
17 Connection to SeaTalk Compatible Autopilots 8
18 Connection to other Marine Equipment 9
Chapter 2 Fault Finding and Maintenance 11
21 Fault Finding 11
22 Maintenance 1 2
Chapter 3 Operation 13
31 Depth Key 1 4
32 Log Key 1 5
33 HDG Key 1 6
34 Wind Key 1 8
35 Dead Reckoned Functions 19
36 Display Contrast 19
Chapter 4 CODE Lock Security 21
Chapter 5 Calibration 25
51 Initial Calibration 26
52 Intermediate Calibration 28
53 Extended Calibration 29
Chapter 6 General 31
Introduction
The ST50 Plus Multi is a powerful multifunction repeater that allows you to
display many parameters transmitted onto the SeaTalk bus by other
instruments As well as repeating live information the Multi is able to
provide computed functions derived from data supplied by other SeaTalk
instruments
The following computed functions are available with a full SeaTalk system
VMG True Wind Direction True Wrnd Speed Tack Course Distance Made
b Good and Course Made Good
The ST50 Plus Multi also incorporates a security 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 to wish you years of trouble free Chapter 1 Control Head Installation
1lOmm 433in 3875mm 15in
11 Sing
The ST50 Plus Multi is designed for above or below deck installation
where it is
l Easily read by the helmsman
l Protected against physical damage
l At least 230mm gin from a compass
l At least 500mm 20in from radio receiving equipment
l Accessible from behind for ease of installation and cable running
Cation
To prevent moisture forming on the display window the ST50 Plus
Multi breathes through a small vent in the cable boss Therefore
the control head must be sited where the rear case is protected
from contact with water
The rear case is ftied with a foam gasket to form a watertight seal
between the instrument and the selected installation face
Bracket Mounting
The ST50 Plus Multi can as an alternative be bracket mounted using the
Autohelm Mounting Kii Cat No D130
1 Cable boss 2 Fg studs 3 Thmb nuts 4 Gasket
12 Mounting Procedure Note Because the instrument breathes through
the vent in the rear case
1 Make sure that the selected location is clean smooth and flat this bracket is for interior use only
2 Apply the selfadhesive template supplied to the selected location Flush Mounting
and mark the centres for the futing studs 2 and the cable boss 1
A flush mounting kit is available for installations where a flush mount is
3 Drill two 4mm 532in clearance holes for the fixing studs 2 through required or more desirable Full installation instructions are
provided with
the bulkhead Remove the template the kit Cat No D187
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 cableboss
1 clearance hole
7 Assemble the control head to the bulkhead and secure from behind 0
using the thumb nuts 31
13 Power Supply standalone operation 15 Connection of Separated Instruments
Separated instruments can be connected using one of the range of
SeaTalk Extension Cables These cables are supplied with a SeaTalk
connector fitted to each end A junction box can be used to join the cable if
it is cut for easier routing or shortening
If preferred any 2 core screened cable conforming to the following
specification may be used instead of the SeaTalk cable
l 22 AWG 2 core screened cable with a minimum copper area
O of 05mm2
1 Connect the 2m 16ftl power supply directly to the distribution panel
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
rYellowl
4 Protect the circuit with a 5A circuit breaker
Note Longer runs to the power supply can be made using one of the
SeaTalk Extension Cables
14 Power Supply SeaTalk operation
ScreenJ L Red A bcreen
All instruments in a SeaTalk system receive power and information from
the SeaTalk bus Each instrument has two SeaTalk connectors 3 pin on
150mm 6in tails To supply power and information to the instrument
simply plug the tails from adjacent instruments into the ST50 Multi tails 0
To SeaTalk tails SeaTalk tails
ST50 Plus Multi Operatian and fmtalfatian Handbank Ring Connection
18 Connection to other Marine Equipment
Installations with a large number of instruments on a SeaTalk bus may The ST50 Plus Multi has an NMEA 0183 data
output connector 1
require a second ringmain connection to the power supply breaker to Providing it is available on the SeaTalk
bus the following information will
prevent excessive voltage drops Whether a second ring main is required be transmitted every 1 to 2 seconds
can be determined from the following
Sentence Content Instrument required on
Cable run upto 1Om 33ft
SeaTalk Bus
Single connection 13 instruments maximum VWR Apparent Wind Speed
Wind
knots and Direction
Second connection 26 instruments maximum
DBT Depth of water below Depth or Tridata
Cable run upto 2Cbn 66ft
transducer feet
Single connection 7 instruments maximum HDM Magnetic Compass
Steering Compass or SeaTalk
Second connection 13 instruments maximum Heading
Autopilot
The second ringmain should be connected to the spare lead on the last HSC Locked Magnetic Compass
SeaTalk Autopilot operating in
Heading Auto mode
instrument in the chain and directed back to the circuit breaker
VHW Water Speed knots Speed or Tridata
17 Connection to SeaTalk Compatible Autopilots Magnetic and
True Compass or SeaTalk Autopilot
Compass Heading
lf the installation includes a SeaTalk compatible Autopilot the ST50 Plus Longitude and Latitude
GPS or Navdata
instruments may be connected to the SeaTalk bus at any point No
VTG Course Over Ground GPS or Navdata
independent connection to the 12V power supply is necessary as the
Speed Over Ground
instruments receive power from the Autopilot course computer
BWC Bearing and Distance to GPS Navdata or Navcenter
Wavpoint
MTW Water Temperature degC Speed or Tridata
To autopilot A lm 3ft NMEA Interface cable 2 is supplied
with the Multi The red wire
SeaTalk BUS
Connection
0 should be connected to the signal input and the blue wire to the signal
ground OVI of the other marine equipment Up to two NMEA 0183
receivers may be connected to each Multi
To any further
ST50 Instruments
or Autopilot RED Signal 2
Control Units
DLI34l
I I
BLUE 2 Fault Finding and 2 Fault Finding and FautFmding
All Autohelm products are prior to packing and shipping subjected to
comprehensive test and quality assurance programmes However if a fault
arises with the ST50 Plus Mulli the following table will help to identify the
probable cause and provide the most likely cure
Fault Cause Action
Instrument display No supply Check supply
blank
Check cabling and
security of SeaTalk
connectors
Check Return unit for repair
Instrument displays The Code Lock feature Enter correct code
CODELOCK set has been set number
ENTER CODE
No exchange of SeaTalk cabling Check security of
information between problem SeaTalk connectors
SeaTalk instruments
Disconnect instruments
one by one to isolate
faulty unit
Failure of a group of SeaTalk Check security of
instruments in SeaTalk SeaTalk connectors
chain problem and units
is Phc Mi r
tha ad
Indslls4ku
Usndhk
22 Maintenance Chapter 3 Operation
Instrument The ST50 Plus Multi can be connected to
other ST50 instruments to
provide a fully integrated system that can be linked to any of the SeaTalk
Certaii atmospheric conditions may cause condensation to form on the compatible autopilots The Multi also provides NMEA
0183 data for
conirol head window This will not harm the instrument and can be cleared by navigation receivers chart olotters or other
navigational eouioment
I
increasing the illumination setting to Level 3
Note The operational flow charts on the following pages show the
Chemical and abrasive materials must not be used to clean the ST50 Plus information available with a full SeaTalk system
Muiti instrument if it is dirty clean with a soft damp cloth
Units of measure follow those of the main instrument
Cabling
Examine all cables for chafing or damage to the outer shiefd and where
necessary replace and resecure
Acme
For advice or further information regarding the installation of this product
please contact the Autohelm product Support Deparlment or your own
National chaepter3 operation 15
31 Depth Key 32 Log Key
LIGHTS
LEVEL 3
LIGHTS
LEVEL 2
LIGHTS
LEVEL 1
0 e
LIGHTS OFF
Note Depth alarms can be silenced by pressing any key Also the
Fathoms display is only availble when feet is transmitted on the SeaTalk
16 thmtav
11 fXad
HDG Key HDG Key Notes
True Heading
True headings are displayed only if variation is present on the SeaTalk bus
or set in calibration on the Multi instrument
Distance Made Good and Course Made Good
The Distance Made Good and Course Made Good displays can be reset
by pressing and holding HDG for 4 seconds
TRUE
HEADING
MAGNETIC
HEADING
DISTANCE MADE
GOOD DMG
COURSE MADE
GOOD True
18 Chaptar 3 Wind Key 35 Dead Reckoned Functions
Distance Made Good DMG and Course Made Good CMG are dead
reckoned functions with no correction for tidal set or drii
I North
APPARENT WIND SPEED
I I
36 Display Contrast
The contrast can be adjusted to achieve optimum legibility at any angle
APPARENT WIND TRUE WlND DlRECTlON Clruel
TRUE WIND DIRECTION 1 Momentarily press DEPTH and
LOG together
2 Press HDG or MD to increase or decrease the contrast setting the
range being between 1 and 15
3 Press DEPTH and LOG together momentarily to store the
contrast setting
Note A high setting will suit installations where the control head will be
viewed from above
Chapter 4 CODE Lack Secwity
Chapter 4 CODE Lock Security
The ST50 Plus range incorporates an antitheft feature called CODE
Lock Designed to protect individual instruments or complete systems in
vulnerable areas CODE Lock is a four digit number that you programme
into the permanent memory of a selected master instrument
Note A master instrument is a digital unit on which the code number can
be entered and then if part of an integrated system transmitted to other
ST50 Plus e This facility means that should a CODE Locked instrument be removed
from the vessel without your permission it cannot be operated without the
four digit security number
CODE Lock can be used in one of three modes
ModelOff
As it leaves the factory CODE Lock is set to off In this mode the instru
ment will operate normally when it is switched on however the unit will not
be protected by the antitheft feature
Mode 2 CODE Lock OnceOnly Entry page 23
This mode is designed for systems with a digital ST50 Pius instrument in a
safe belowdecks location This instrument can then be used as a
master to enter the four digit code number and when the power is
switched on automatically transmit the code to all the instruments in the
system The advantage of this mode is that with the master safely below
deck code entry via the keypad is a onceonly operation on Master Unit
t Power
Once CODE Lock is set the system operates normally as soon as the
power is switched on In other words the CODE Lock security is invisible
ST50 plus Multi Operadon and fnstalation Handbaak
Mode 3 CODE Lock input at PowerOn page 24 Once Only Entry
In the PowerOn mode the ST50 Plus is configured so that you have to Action Display Shows
enter the four digit number on a master digital instrument every time the
1 Press and DEPTH and LOG together for CAL after 2 seconds and
system is switched on Until this number is entered the instruments 4 seconds ZO98VXX after 4
will not operate
2 Press DEPTH once CODELOCK Cal Off
This mode is particularly useful when you are unable to position a master
3 4 seconds after CODELOCK Cal Off ENTER CODE
instrument below decks and therefore all the vessels valuable instrumen I 8
tation is left in a vulnerable area 4 Press LOG
5 Press HDG or WIND to select 1
first number
6 Press LOG to accent number 1 11
7 Press HDG or WIND to select second 12
number
8 Press LOG to accept number 1 2
9 Press HDG or WIND to select third 123
number
10 Press LOG to accept third number 1 2 3
11 Press HDG or WIND to select fourth 1234
IY Power
number
Press LOG to accept code 1 2 3 4
Should a CODE Locked instrument be removed from the system it will not 13 Press LOG PWR ON
operate until the correct four digit security number is entered or received CODELOCK Cal
14 Leave PWR ON flashing for 10 seconds
lf your selected master instrument fails for any reason the security code 15 To exit CODELOCK press DEPTH and Normal
operation
number can be entered via another ST50 Plus instrument in the system LOG together for 2 seconds
However until another instrument is set as a master or the existing master
is replaced the securii code will have to be entered every time the
system is switched on lf you do not exit CODELOCK Cal set within 10 seconds the display
will
change to CANCEL CODE You now have the option of cancelling the
Note A warning sticker is provided with each instrument lf you have set 0
code by pressing LOG to return to the display or exit as de
CODE Lock position this warning sticker in a prominent location to deter
scribed in action 15 above
potential thieves
Your Code Up the Security Code For future reference enter your chosen code number into
the box below
When the ST50 Plus Multi is switchedon for the first time the security
feature is set to off To turn the CODE Lock feature on proceed
as follows I I
For obvious reasons please store this handbook in a safe place
Operation
Once only CODE Lock entry is invisible once it has been set
On PowerUp Chapter 5 Calibration
Action Display Shows The ST50 Plus Multi can be adjusted to suit your particular
Press DEPTH and LOG together for 4 CAL after 2 seconds and using the initial intermediate and extended calibration menus
described in
seconds ZO98VX after 4 sec this section
2 Press DEPTH once CODELOCK Cal Off
3 4 seconds after CODELOCK Cal Off ENTER CODE
4 Press LOG I I
5 Press HDG or WIND to select first 1
number
6 Press LOG to accept number 1
7 Press HDG or WIND to select second 12
number
8 Press LOG to accept number 1 2
9 Press HDG or WIND to select third 123s
number
10 Press LOG to accept third number 1 2 3
11 Press HDG or WtND to select fourth 1234
number
12 Press LOG to accept code 1234
13 Press LOG PWR ON
14 Press LOG within 10 seconds CODELOCK Cal set
15 To exit CODELOCK press DEPTH and Normal operation
LOG together for 2 seconds
ff you do not exit CODELOCK Cal set within 10 seconds the display will
change to CANCEL CODE You now have the option of cancelling the
code by pressing LOG to return to the display or exit as de
scribed in action 15 above
Your Code Number
For future reference enter your chosen code number into the box obvious reasons please store this handbook in a safe the unit is powered on you are
prompted to enter the code number
To enter the number carry out actions 4 to 12 above and press LOG
26 Chapter 5 Calibration 27
51 Initial Calibration Initial Calibration Notes
Variation
Heading information is transmitted onto the SeaTalk bus by the instrument
reading the fluxgate compass This can be the Autopilot or ST50 Steering
compass which in either case should be set to display magnetic
headings
Magnetic Only
t lf you want to display just magnetic headings on the multi set the Autopilot
or ST50 Steering Compass to read magnetic and set variation on the Multi
to zero this is the factory default
True and Magnetic
To display both true and magnetic headings set the Autopilot or ST50
VARATlON Steering Compass to read magnetic If available in the Autopilot calibration
menu Variation should be set on the Autopilot Otherwise set variation on
the Multi using WIND to increase and HDG decrease the displayed value
Note When set to display true headings significant changes in local
MULTI variation will after the true display as the fluxgate compass measures the
magnetic heading If you want the Steering Compass or Autopilot to
display true heading please contact your local distributor or the Autohelm
t Product Support Department for advice
I DEPTH
Storing Variation
To store variation press and hold DEPTH and LOG for 2 seconds
Multi Depth Log HDG and Wind
These functions are for use with the Multi Remote Control Full details are
B 0 given in the handbook supplied with remote control
Exii Initial Calibration
Press and hold DEPTH and LOG for 2 seconds to exit initial calibration
28 chaptar5 calfe 29
52 Intermediate Calibration 53 Extended
BUS TRUE
OR MAGNATIC
Intermediate Calibration Notes
Refer to Chapter 4 for full details on the securkity feature
REMOTE
To exit intermediate calibration press and hold DEPTH and LOG together TRANSMISSION
for 2 seconds
Exit Intermediate Calibration
Press and hold DEPTH and LOG for 2 seconds to exit intermediate
ST50 plus Multi Oferation and lrstalfatjon Handbook Chapter 6 General Calibration Notes
Chapter 6 General With the exception of the damping menus which are adjusted using HDG
andor WIND the following options are modified using the WIND key
Dimensions Power supply
10 to 16V
Calibration OnOff
Power consumption 30ma normal lOOma illumination on
Calibration allows you to protect your selected settings When calibration
is enabled the initial and intermediate calibration cannot be modiiied Temperature range 0 to 70 degC
CAL 0 Calibration locked ie no access Illumination 3 levels plus off
CAL 1 Calibration unlocked ie normal access
Once locked calibration can be unlocked by entering extended calibration
and selecting 1 calibration unlocked the factory default is 1
Damping Speed VMG and True Wind
Damping adjusts the averaging applied to the displayed dated The default
setting is 4 however the range is between 1 and 15
Boat Show
Boat Show mode is a dealer demonstration program only Under no
circumstances must this program be engaged when this unit is installed
onboard your vessel The display must therefore be left set to
BSHOW 0
Remote Transmission
The MULTI option is for future use only and should be set to 1
Bus True or Magnetic
This option is set to true or magnetic depending on whether the informa
tion on the SeaTalk bus is true or magnetic the factory default is
magnetic
Exit Extended Calibration
Press and hold DEPTH and LOG for 2 seconds to exit extended

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