Raymarine ST50 plus Specifications download pdf (Page 23)

ST50 PLUS RADAR Operation and Installation Handbook

Section 2. Installation

4. Drill a

9/64’

hole in the center of each of the three slotsin the base

of the sensor. These slots will allow you to turn the sensor slightly

to align it with the center line of the vessel during compensation.

5. Using the three#lOstainless steelscrews provided, or three#lO

brass screws, secure the sensor in place.

6. Install a terminal strip or junction box (not supplied) in any

convenient place to allow system interconnection.

7. It is advisable to connect the sensor through a fused supply or

circuit breaker at either an existing switch panel or separate fuse

block. Since the current drain is very low, the sensor could be left

on with very little battery drain. However, it is best secure power

to the sensor when the vessel is not in use. These sensors are not

intended for use on “Positive” ground vessels.

2.4.2.3 Interconnection (XX Heading Sensor)

The XX heading sensor is intended for use on vessels with 12 VDC

power systems and can operate between 9.5 (min) and 16VDC (max).

The power system can be “Negative” grounded or have both positive

and negative lines “floating” above ground. The sensor is NOT

intended for use on “positive” ground vessels.

A 10 foot shielded cable is supplied with the sensor unit. The cable

contains 7 conductors. Two conductors (GRN,

ORG)

are used to

supply heading data to the radar display and two conductors (RED,

BLK)

are used to supply 12 VDC ships power to the unit. The unused

conductors (WHT, BRN and BLU) should be insulated and tied back. It

is suggested that the wiring terminate on a suitable terminal strip.

Refer to Fig. 2-15, below.

When connecting power to the sensor, OBSERVE PROPER POLARITY!

The RED wire should be connected to the Positive (+I source terminal;

the BLACK wire should be connected to the NEGATIVE

(-1

source

terminal. If the power leads are reversed the sensor will not operate.

If it appears that the sensor is inoperative, check the input voltage

polarity with a DVM or VOM and if necessary, reverse the wires to

correct !hp error.

Notes: The sensor is designed to output the NMEA 0183 “HDM”

sentence for the radar. The sensor can supply data for up to two (2)

external inputs which conform to the NMEA interface requirements.

Ensure that the wiring is as shown in Fig. 2-15, below.

To avoid ground loops DO NOT CONNECT the sensor cable shield to

giound.

TERMINAL

BLOCK

NMEA

DATA

COMMOC

BLU

-L

SHLPJ

XX Fluxgate

Ilcxfirlg

Sensor

Fig. 2-15 XX Heading Sensor Wiring

2.4.2.4 Interconnection (INI-100)

The INt-100 intended for use on vessels with 12 VDC power systems

and can operate between 8.5 (min) and 28 VDC (max). The power

systemcan be “Negative” grounded or have both positive and negative

lines “floating” above ground. The

INI-

is NOT intended for use on

“positive” ground vessels.

A 10 foot shielded cable is supplied with the

INI-

unit. The cable

contains 4 conductors. Two conductros (WHT,

GRN)

are used to

supply heading data to the radar display and two conductors (RED,

BLK)

are used to supply 12 VDC ships power to the unit.

is suggested

that the wiring terminate on a suitable terminal strip. Refer to Fig.

16, below.

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Raymarine ST50 plus Specifications Page 23

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