or DC specification. 12 V
operation not available with
FR-1525 MARK-3 or
42 rpm antenna.
*1: ARP-10 Cannot be used
1
with 42 rpm antenna.
RGB-BUFF
Board
24 VDC
Rectifier
RU-1746B-2
RU-3424*
SHIP’S MAINS
12/24-32 VDC
or
100/115 VAC,
1φ, 50/60 Hz
AC
2
*2: For FR-1525 MARK-3
viii
1-1
MOUNTING
1.1Scanner Unit
Mounting considerations
•The scanner unit is generally installed either on top of the wheelhouse or on the
radar mast, on a suitable platform. Locate the scanner unit where there is a
good all-round view.
•No funnel, mast or derrick should be within the vertical beamwidth of the scanner in the bow direction, especially zero degrees ±5°, to prevent blind sectors
and false echoes on the radar picture.
•It is rarely possible to place the scanner unit where a completely clear view in
all directions is available. Thus, you should determine the angular width and
relative bearing of any shadow sectors for their influence on the radar at the
first opportunity after fitting.
Figure 1-1 Mounting methods
•Locate the antenna of a direction finder clear of the scanner unit to prevent
interference to the direction finder. A separation of more than two meters is
recommended.
•To lessen the chance of picking up electrical interference, avoid where possible
routing the signal cable near other onboard electrical equipment. Also avoid
running the cable in parallel with power cables.
•A magnetic compass will be affected if placed too close to the
scanner unit. Observe the following compass safe distances to
prevent deviation of a magnetic
compass.
Equipment Unit
Antenna unit (6 kW)1.65 m1.25 m
Antenna unit (12 kW)1.65 m1.25 m
Antenna unit (25 kW)2.15 m1.60 m
Standard
Compass
Steering
Compass
•Do not paint the radiator aperture, to ensure proper emission of the radar waves.
•The signal cable run between the scanner and the display is available in lengths
of 15 m (standard), 20 m, and 30 m. Whatever length is used it must be unbroken; namely, no splicing allowed.
•Deposits and fumes from a funnel or other exhaust vent can adversely affect
the aerial performance and hot gases may distort the radiator portion. The scanner unit must not be mounted where the temperature is more than 70°C.
•Leave sufficient space around the unit for maintenance and servicing. See the
scanner unit outline drawing for recommended maintenance space.
Assembling the scanner unit
The scanner unit consists of the scanner radiator and the scanner unit chassis,
and they are packed separately. Fasten the scanner radiator to the scanner unit
chassis as follows:
1. For the XN20AF, XN24AF, attach two guide pins to the underside of the scanner radiator.
2. Remove the waveguide cap from the radiator bracket. The cap may be discarded.
3. Coat the waveguide flange with anticorrosive sealant as shown in Figure 1-2.
10 mm
Hole for
a guide pin
5 mm
O-ring
Hole for
a guide pin
Anticorrosive sealant
Figure 1-2 Coating the waveguide flange with anticorrosive sealant
4. Coat fixing holes for the scanner radiator with anticorrosive sealant.
5. Grease the O-ring and set it to the O-ring groove of the radiator flange.
6. Set the scanner radiator to the radiator bracket.
7. For the XN20AF, XN24AF, coat hex bolts (M8 x 40, slotted washerhead, 8 pcs.)
with anticorrosive sealant and use them to loosely fasten the scanner radiator
to the scanner unit chassis. For the XN12AF, coat hex bolts, flat washers and
spring washers with anticorrosive sealant and use them to loosely fasten the
scanner radiator to the scanner unit chassis.
1-2
8. Remove two guide pins (inserted at step 1), and then tighten fixing bolts.
CAUTION
Be sure to remove the guide pins.
Injury may result if the guide pins loosen
and fall.
Antenna radiator
CAUTION
Waveguide
Radiator bracket
Guide pin
(XN20AF,
XN24AF
only)
O-ring
Hex bolt (M8X40), 8 pcs.
(XN20AF, XN24AF only)
Hex bolt (M8X35), 8 pcs.
Flat washer
Spring washer
(XN12AF only)
Figure 1-3 Fastening the radiator to the radiator bracket
Fastening the scanner unit to the mounting platform
The scanner unit may be assembled before hoisting it to the mounting platform.
However, do not lift the scanner unit by the radiator. Always hold the unit by its
housing. When using a crane or hoist, lift the unit by the hoist rings which should
be fastened to the bolt fixing covers of the scanner housing.
CAUTION
DO NOT lift the scanner unit by the radiator;
attach rope to lifting fixtures on the chassis
and hoist by crane. Be sure stress is not
placed on the radiator when hoisting.
NO!
Lifting Fixture
(2 pcs.)
Tie rope here.
Remove lifting
fixtures after installation.
1-3
1-4
1. Construct a suitable mounting platform referring to the outline drawing at the
back of the manual.
2. Drill four mounting holes of 15 mm diameter and one cable entry hole of about
50 mm diameter in the mounting platform.
3. Lay the rubber mat (supplied) on the mounting platform.
4. Place the scanner unit on the rubber mat orienting the unit so the bow mark on
its base is facing the ship’s bow.
Figure 1-4 Scanner unit, front view
5. Fasten the scanner unit to the mounting platform with M12x60 hex bolts, nuts,
flat washers and seal washers.
6. Using hex bolt (M6x25), nut (M6) and flat washer (M6) establish the ground
system on the mounting platform as shown in Figure 1-5. The location should
be within 370 mm of the ground terminal on the scanner unit. Connect the
ground wire (RW-4747, 370 mm, supplied) between the grounding point and
ground terminal on the scanner unit. Coat the entire ground system with silicone sealant (supplied).
Figure 1-5 How to mount the scanner unit
1-5
1.2Display Unit
Mounting considerations
The display unit can be mounted on a tabletop or a bulkhead. When selecting a
mounting location, keep in mind the following points:
•Select a location where the display unit can be viewed and operated conveniently and where the screen can be viewed while facing towards the bow.
•Locate the unit out of direct sunlight and way from heat sources because of
heat that can build up inside the cabinet.
•Locate the equipment away from places subject to water splash and rain.
•Be sure the mounting location is strong enough to support the weight of the unit
under the continued vibration which is normally experienced on the ship. If
necessary reinforce the mounting location.
•Determine the mounting location considering the length of the signal cable between the scanner unit and the display unit. (The signal cable comes in lengths
of 15, 20 and 30 meters).
•Leave sufficient space on the sides and rear of the unit to facilitate maintenance. Also, leave a foot or so of “service loop” in cables behind the unit so it
can be pulled forward for servicing or easy removal of connectors.
•A magnetic compass will be affected if placed too close to the display unit.
Observe the following compass safe distances to prevent deviation of a magnetic compass: Standard compass, 1.0 m, Steering compass, 0.75 m.
Mounting procedure
Tabletop mounting
1. Loosen the two M8 x 40 bolts at the
front of the display unit. Remove the
mounting base.
2. Mark screw locations in the tabletop, using the mounting base as a
template. For mounting by bolts,
nuts and washers, drill four holes
of 12 mm diameter in the tabletop.
3. Fasten the mounting base to the
tabletop by tapping screws or M10,
bolts, nuts and washers.
4. Lay the display unit on the mounting base. Fasten the display unit to
the fixing plate with the two M8 x
40 bolts removed at step 1.
Figure 1-6 Tabletop mounting of display unit
bulkhead mounting
1. Remove the fixing plate, mounting base, bottom plate and cover.
2. Fasten the mounting base and bottom plate at the top of the display unit.
3. Fasten the cover at the bottom of the display unit.
4. Fasten the fixing plate to the bulkhead with M10 bolts, nuts and washers (local
supply).
5. Fix the display unit to the fixing plate with two hex bolts M8 x 40.
Binding screw
M
4X8 (8 pcs.)
Screw
M3X6 (4 pcs.)
Mounting base
B
ottom
plate
H
ex bolt
(6 pcs.)
Bolt (M10)
(Local supply)
Hex bolt (M8X40)
(2 pcs.)
Fixing plate
BULKHEAD
Figure 1-7 Bulkhead mounting of display unit
Handles (option)
1. Remove cosmetic caps at front of display unit.
2. Fasten the handles with rosette washers, spring washers and panhead screws.
Handle
(Type OP03-70, Code No. 008-423-420
Figure 1-8 Attachment of handles
1-6
2-1
WIRING
2.1Scanner Unit
1. Open the scanner unit cover.
2. Disconnect plugs P611, P801 and P821.
3. Unfasten the transceiver module (two bolts). Remove the transceiver module.
Figure 2-1 Scanner unit, front view
4. Unfasten the four fixing bolts on the cable gland at the base of the scanner unit.
Remove clamping ring, rubber gasket and washers.
2-2
Figure 2-2 Scanner unit, front view, cover removed
5. Pass the signal cable through the cable entry hole in the scanner unit mounting
platform. Trim the cable so about 80 cm of it protrudes past the cable gland.
6. Slide the clamping ring, washer, rubber gasket and washer onto the cable in
that order.
7. Fabricate the signal cable as shown on page 2-4.
8. Referring to Figure 2-3, pass the outer and inner shields between the signal
cable and the clamping ring. Fasten the cable gland.
Figure 2-3 Passing cable shields between cable and clamping ring
9. Connect the signal cable to the terminal board RTB801 in the scanner unit by
referring to the interconnection diagram. Leave “slack” in the coaxial wire to
prevent breakage.
10.Bind cores of cables with cable ties.
11.Mount the transceiver module. Connect plugs P611, P801 and P821. Twist the
shields of the signal cable together and fasten them to the ground terminal on
the transceiver module.
12.If the scanner is mounted 2˚ or more left of ship’s bow, adjust the position of
S901 so it becomes “on” (contact between #1 and #2 on pcb MP-3795). To
access S901, open the bow side cover; S901 is above the drive gear.
2-3
Figure 2-4 Scanner unit, front view
13.Confirm that all screws are tightened and all wiring is properly mode. Coat
waterproofing gasket, bolts and tapping holes of scanner unit with silicone
grease. Check that the waterproofing gasket is seated as shown in Figure 2-5.
Close the scanner unit cover.
Figure 2-5 Correct seating of waterproofing gasket
2-4
Fabricating signal cable S03-81
1. Remove the vinyl sheath by 450 mm.
2. Slide the clamping ring, washer, rubber
gasket and washer onto the signal cable
in that order.
3. Unravel the outer shield to expose the
cores in the outer layer. Then, unravel the
inner shield to expose the cores in the inner layer. Label all inner cores to aid in
identification.
4. Attach EMI cores to all inner cores and all
outer cores, and tie them with cable ties,
etc..
Note: There are two types of the EMI core,
thick and thin.
5. Trim each core (except coaxial wire) considering its location on the terminal board.
6. Trim the inner and outer shields leaving
500 mm each. Twist shields together and
attach crimp-on lug FV5.5-4 (blue, ø4).
7. Remove insulation of each core by about
6 mm. Fix crimp-on lug FV1.25-M3 (red,
ø3) to each core.
8. Fabricate the coaxial cable. Make the
length 10 mm longer than the shield to prevent wire strain. Attach crimp-on lug
FVD1.25-3 (red, ø3) to coaxial cable.
Figure 2-7 How to ground
signal cable S03-81
Figure 2-6 How to fabricate signal
cable S03-81
2-5
2.2Display Unit
At least two cables are terminated at the display unit: the signal cable S03-81 and
the power cable. The signal cable comes with a connector preattached to it for
connection to the display unit.
Fabricating the DC power cable (CVV-S 8X2C, option)
1. Remove the vinyl sheath by 40 mm.
2. Unravel the jute tape in the braided shield.
3. Remove sheath of cores by 10 mm.
4. Attach crimp-on lugs to shield and cores.
5. Tape the cable as shown in the figure below.
Figure 2-8 Fabricating power cable CVV-S 8X2C
2-6
Wiring
1. Remove the display unit cover.
Figure 2-9 Display unit, rear view, cover removed
2. Dismount the clamping plate from the cable clamp by loosening two screws.
3. Lay the signal cable and power cable inside the cable clamp. Fasten the clamping
plate to the cable clamp by using two M4x15 screws. If optional equipment are
connected, secure the clamping plate by using two M6x35 bolts.
4. Connect the power cable and signal cable by referring to the interconnection
diagram. Fasten shields to chassis.
5. Run a ground wire (IV-8 sq, or equivalent) from the ground terminal to nearest
ground point.
Figure 2-10 Display unit, rear view
2-7
6. It is recommended to seal the cable gland with aluminum tape or similar material to keep foreign objects out of the display unit.
2. Solder VH connector assemblies to cable MPYC-5 (local supply) form the gyrocompass.
Figure 2-12 How to attach connector assy. to gyrocompass cable
Connector
#1S1S1
#2S2S2
#3S3S3
J4
#4-#5-#1-R2
J5
#2COMR1
#3--
Step
Type
Synchro
Type
3. Connect VH connectors to GYRO PROCESSOR Board (64P1106A) as follows: J4 (5 pin), J5 (3 pin).
Ground
CAUTION
Connect a ground wire (IV-8sq or equivalent) between the earth terminal on the
display unit and ship’s superstructure.
2.3Rectifier
A rectifier (RU-3424, RU-1746B-2) is necessary when the set designed to run on
DC power is connected to AC mains. Install the rectifier in any clean, well-ventilated location. For mounting dimensions and interconnections, see the drawings
on pages D-4, D-5 and S-1.
CAUTION
Ground the equipment to
prevent mutual interference.
Note:
Use rectifier RU-3424 with the FR-1525 MARK-3 (42 rpm).
100V110V115V0V 110V115V
24 VDC output
AC ship’s mains
Connections for 100 VAC ship’s mains
100V110V115V0V 100V 115V
2-8
24 VDC output
AC ship’s mains
Connections for 220 VAC ship’s mains
Figure 2-13 Rectifier connections
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