Furuno PR-241 User manual

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Installation Guide
AC/DC POWER SUPPLY UNIT
Model PR-241
SAFETY INSTRUCTIONS ................................................................................................ i
OVERVIEW...................................................................................................................... 1
EQUIPMENT LIST ........................................................................................................... 1
SYSTEM CONFIGURATION ........................................................................................... 2
1. MOUNTING.................................................................................................................. 2
2. WIRING FOR SINGLE USE ........................................................................................ 3
3. WIRING FOR DUAL USE............................................................................................ 5
4. HOW TO USE THE UNIT ............................................................................................ 9
5. JIS CABLE GUIDE .................................................................................................... 10
SPECIFICATIONS ..................................................................................................... SP-1
OUTLINE DRAWINGS ................................................................................................ D-1
INTERCONNECTION DIAGRAMS.............................................................................. S-1

i
SAFETY INSTRUCTIONS
The operator and installer must read the applicable safety instructions before attempting to install
or operate the equipment.
Observe the following compass safe
distances to prevent deviation of a
magnetic compass:
PR-241
Standard
compass
Steering
compass
0.85 m 0.55 m
CAUTION
CAUTION
WARNING
Mandatory ActionProhibitive ActionWarning, Caution
Indicates a condition that can cause death or serious injury if
not avoided.
Indicates a condition that can cause minor or moderate injury if
not avoided.
WARNING
Turn off the power at the
switchboard before beginning
the installation.
Fire, electrical shock or serious
injurycan result if the power is
left on or is applied while the
equipment is being installed.
Be sure that the power supply is
compatible with the voltage
rating of the equipment.
Connection of an incorrect power
supply can cause fire or damage
the equipment.
Use only the specified power
cable.
Fire or damage to the equipment
can result if a different cable is
used.
Ground the equipment to prevent
electrical shock and mutual
interference.
Do not disassemble or modify the
equipment.
Fire, electrical shock or serious injury
can occur.
WARNING
㆙࿌
To avoid electrical shock, do not
remove cover. No user-serviceable
parts inside.
ឤ㟁䛾ᜍ䜜䛒䜚䚹
䝃䞊䝡䝇䝬䞁௨እ䛾᪉䛿䜹䝞䞊䜢㛤䛡
䛺䛔䛷ୗ䛥䛔䚹ෆ㒊䛻䛿㧗㟁ᅽ㒊ศ䛜
ᩘከ䛟䛒䜚䚸୓୍䛥䜟䜛䛸༴㝤䛷䛩䚹
Warning Labels(s)
Warning label(s) is(are) attached to the unit.
Do not remove the label(s). If a label is missing
or damaged, contact a FURUNO agent or
dealer about replacement.
Name: Warning Label 1
Type: 86-003-1011-3
Code No.:100-236-233-10

1
OVERVIEW
The PR-241 is a unit integrates the functions of our AC/DC power supply units and rectifiers
listed below.
• AC/DC power supply unit PR-240, PR-300
• Rectifier unit RU-1746B-2, RU-3423, and RU-3424.
Important notices
The specifications of PR-241 have been changed to be compatible with DC bypass. The DC
compatible unit has a white dot as shown in the figure below. Up to two units can be con-
nected in parallel, the same as the previous specifications. However, the DC bypass com-
patible units cannot be connected in parallel with the DC bypass non-compatible units.
The differences from the conventional PR-241 (DC bypass non-compatible units) are as
shown in the table below.
The following concern acts as our importer in Europe, as defined in DECISION No 768/
2008/EC.
- Name: FURUNO EUROPE B.V.
- Address: Ridderhaven 19B, 2984 BT Ridderkerk, The Netherland
The following concern acts as our importer in UK, as defined in SI 2016/1025 as amended
SI 2019/470.
-Name: FURUNO (UK) LTD.
-Address: West Building Penner Road Havant Hampshire PO9 1QY, U.K .
Discard this product according to local regulations for the disposal of industrial waste. For
disposal in the USA, see the homepage of the Electronics Industries Alliance (http://www.ei-
ae.org/) for the correct method of disposal.
EQUIPMENT LIST
DC bypass
non-compatible units
DC bypass
compatible units
When the input from the AC
power source is disconnected.
No power is supplied from DC
power source.
Power is automatically supplied
from DC power source.
When DC power is turned ON
while the power switch is
turned OFF.
24 VDC is not output. 24 VDC is output.
Standby power when no device
is connected.
Not generated. 4.8 W is generated.
Standard Supply
Name Type Code No. Qty. Remarks
AC/DC Power
Supply unit
PR-241 - 1
DC bypass compatible unit
DC bypass non-compatible unit
Has a
white dot.

2
SYSTEM CONFIGURATION
1. MOUNTING
This unit can be mounted on a desktop or bulkhead. Refer to outline drawing in the back of
this manual when you mount the unit.
When mounting the unit, pay attention to the following points.
• This unit has the following ingress-proof ratings: IP22 for desktop mounting, IP20
for wall mounting.
• When using in dual, do not input from multiple AC power supplies or batteries. Due
to the difference in the load characteristics of the battery and the PR-241, it may not
function as a power supply.
• When using in dual, do not stack the units. Always leave sufficient space between
the units to allow for air-flow and prevent heat build-up. See the outline drawing at
the back of this manual for minimum distances required.
• Turn off the power at the switchboard before beginning the installation.
• Referring to the outline drawings at the back of this manual, leave sufficient room
for service and maintenance.
Optional Supply
Name Type Code No. Qty. Remarks
Ferrite Core OP86-11 001-594-450 1 EMI Cores (GRFC-10, 7
pcs. and GRFC-13, 3 pcs)
AC/DC Power Supply
Unit
PR-241
Backup
Battery
㻔24 VDC㻕
DPYC-2.5 DPYC-2.5
100-230 VAC
TPYC-1.5
DPYC-2.5
DPYC-2.5
TPYC-1.5TTYCSLA-1
:
Standard supply
: Optional or local supply
Backup
Battery
㻔24 VDC㻕
AC/DC Power Supply
Unit
PR-241
Connected
Equipment
(Up to 20 A)
AC/DC Power Supply
Unit
PR-241
:
Standard supply
: Optional or local supply
System configuration for single use
DPYC-1.5
100-230 VAC
Connected
Equipment
(Up to 10 A)
TPYC-1.5
DPYC-1.5
System configuration for dual use

3
The mounting procedure is as follows:
1. Referring to the outline drawing at the back of this manual, make four pilot holes
for self-tapping screws (4x16, local supply) in the mounting location.
2. Place the unit in a fixed position and align the screw holes.
3. Secure the unit by tightening the self-tapping screws.
2. WIRING FOR SINGLE USE
Fabrication
Use the following crimp-on lugs (local supply) and cables or equivalent (local supply) for
connection with the power supply unit.
• Power cable: TPYC-1.5, DPYC-1.5
• Crimp-on lugs (see below figure): FV2-P4K
Self-tapping
screws (4x16, 4 pcs.)
CAUTION
To prevent noise and interference,
separate the AC IN, DC IN and DC OUT
cables of this unit from connected
equipment's cables.
FV2-P4K (or equivalent)
7.0 mm

4
Fabrication of TPYC-1.5
Fabrication of DPYC-1.5
The procedure of the wiring is as follows;
1. Unfasten the screws on the terminal cover, then remove the cover. The screws
and cover are required, do not discard them.
9
1515
109109
9
109109
Inner sheath
Armor
Pass the heat shrinkable tube (local supply)
onto the drain wire.
Attach the crimp-on lug
(FV2-P4K) to the core.
Vinyl tape
Drain wireDrain wire
1515
9
109109
Inner sheath
Armor
Vinyl tape
Attach the crimp-on lug
(FV2-P4K) to the core.
Terminal CoverScrews

5
2. Unfasten the binding screws on the terminal and attach the fabricated following
cables to the appropriate terminal.
• TPYC-1.5 (Power cable from ship’s main)
• DPYC-1.5 (Power cable from backup battery)
3. Attach the terminal cover to the unit and fasten the screws removed at step 2.
Note: The terminal cover also acts as protection against water damage and must be
installed.
3. WIRING FOR DUAL USE
Fabrication
Use the following crimp-on lugs (local supply) and cables or equivalent (local supply) for
connection with the power supply unit.
• Power cable: TPYC-1.5, DPYC-2.5
• Signal cable: TTYCSLA-1
• Crimp-on lugs (see below figure): FV2-P4K (for power cable), FV1.25-M3(LF) RED
K (for signal cable)
TPYC-1.5
(Cable from Ship’ s main)DPYC-1.5
㻔Cable from Backup battery㻕
Binding screws
CAUTION
To prevent noise and interference,
separate the AC IN, DC IN and DC OUT
cables of this unit from connected
equipment's cables.
FV2-P4K (or equivalent)
7.0 mm
FV1.25-M3(LF) RED K
(or equivalent)
3.7 mm

6
Fabrication of TPYC-1.5
Note: Attach the Ferrite cores as close as possible to the unit.
Fabrication of DPYC-2.5
Note 1: Attach the Ferrite cores as close as possible to the unit
Note 2: For the DC OUT, attach the ferrite cores without wrapping the cable cores.
9
1515
209209
9
209209
Inner sheath
Armor
Drain wireDrain wire
Pass the heat shrinkable tube (local supply)
onto the drain wire. Attach the crimp-on lug
(FV2-P4K) to the core.
Vinyl tape
Attach the ferrite㻌core
(GRFC-10, optional supply) Attach with no
wrapping.
1515
9
209209
Attach the ferrite㻌core
(GRFC-13, optional supply)
122
Inner sheath
Armor
Vinyl tape
Wrap the cable
cores around the
ferrite core twice.
Attach the crimp-on lug
(FV2-P4K ) to the core.

7
Fabrication of TTYCSLA-1
Note: Attach the Ferrite cores as close as possible to the unit.
Installations for dual use, make the necessary connections with the following
procedure.
1. Refer to the step 1 on page 4, unfasten the screws on the terminal cover, then
remove the cover. The screws and cover are required, do not discard them.
2. Refer to the step 2 on page 5, unfasten the binding screws on the terminal and
attach the fabricated following cables to the appropriate terminal.
• TPYC-1.5 (Power cable from ship’s main)
• DPYC-2.5 (Power cable from backup battery)
• TTYCSLA-1 (Signal cable between main and sub)
1515
9
209209
Inner sheath
Armor
Attach the crimp-on lug
(FV1.25-M3(LF) RED K)
to the core.
Vinyl tape
Attach the ferrite㻌core .
(GRFC-10, optional supply)

8
Note 1: To prevent current imbalance, the input and output cables indicated in the be-
low figures must be the same length and the difference in the resistance value of the
cables must be 3 mΩor less.
Note 2: When backing up power from the battery, signal cable connection is not re-
quired.
3. Attach the terminal cover to the unit and fasten the screws removed at step 2.
Note: The terminal cover also acts as protection against water damage and must be
installed.
The maximum length of the cable that connects between
the main and sub is as shown in the table below.
Main Sub
AC
IN DC
IN
DC
IN
DC
OUT
DC
OUT
Current
Share
AC
IN
Communication
Purpose Cable Maximum Length Pattern of Cable
AC IN TPYC-1.5 90 cm
DC IN 90 cm
DC OUT 50 cm
Current Share 70 cm
Communication 20 m
DPYC-2.5
TTYCSLA-1
PR-241
(Main)
Connected
Equipment
PR-241
(Sub)
PR-241
(Main)
PR-241
(Sub)
In the case the connected
equipment is single In the case the connected
equipment is multiple
Terminal (Local supply)
䠖Output from the main
䠖Output from the sub
Same
Length
Same
Length
Same
Length
Same
Length
Connected
Equipment
Connected
Equipment