FURUNO PR-241 AC DC Power Supply Unit Installation Guide

: June 20, 2024
: FURUNO

Installation Guide

AC/DC POWER SUPPLY UNIT

Model PR-241

FURUNO ELECTRIC CO., LTD.

www.furuno.com

All brand and product names are trademarks, registered trademarks or service marks of their respective holders.

SAFETY INSTRUCTIONS

The operator and installer must read the applicable safety instructions before attempting to install or operate the equipment.

WARNING Indicates a condition that can cause death or serious injury if not avoided.

CAUTION Indicates a condition that can cause minor or moderate injury if not avoided.

Warning, Caution Prohibitive Action Mandatory Action

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.

Do not disassemble or modify the equipment.

Fire, electrical shock or serious injury can occur.

CAUTION

Ground the equipment to prevent electrical shock and mutual interference.

Observe the following compass safe distances to prevent deviation of a magnetic compass:

|

Standard compass

| Steering compass
PR-241|

0.85 m

| 0.55 m

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.

FURUNO - Warning labels

Name: Warning Label 1
Type: 86-003-1011-3
Code No.: 100-236-233-10

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 connected in parallel, the same as the previous specifications. However, the DC bypass compatible units cannot be connected in parallel with the DC bypass non-compatible units.

DC bypass non-compatible unit

FURUNO PR-241 AC DC Power Supply Unit - a2 DC bypass compatible unit

Has a white dot.

The differences from the conventional PR-241 (DC bypass non-compatible units) are as shown in the table below.

| 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.

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.eiae.org/) for the correct method of disposal.

EQUIPMENT LIST

Standard Supply

Name

| Type| Code No.| Qty.| Remarks
---|---|---|---|---
AC/DC Power Supply unit| PR-241| –| 1|

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)

SYSTEM CONFIGURATION

System configuration for single use

FURUNO PR-241 AC DC Power Supply Unit - b4

: Standard supply
: Optional or local supply

Backup Battery
(24 VDC)
AC/DC Power Supply Unit
PR-241
Connected Equipment
(Up to 10 A)

System configuration for dual use

FURUNO PR-241 AC DC Power Supply Unit - b6

: Standard supply
: Optional or local supply

Backup Battery
(24 VDC)
AC/DC Power Supply Unit
PR-241
Connected Equipment
(Up to 20 A)

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.

The mounting procedure is as follows:

Referring to the outline drawing at the back of this manual, make four pilot holes for self-tapping screws (4×16, local supply) in the mounting location.
Place the unit in a fixed position and align the screw holes.
Secure the unit by tightening the self-tapping screws.
Self-tapping screws (4×16, 4 pcs.)

2. WIRING FOR SINGLE USE

CAUTION

To prevent noise and interference, separate the AC IN, DC IN and DC OUT cables of this unit from connected equipment’s cables.

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

FV2-P4K (or equivalent)

Fabrication of TPYC-1.5

Inner sheath
Armor
Pass the heat shrinkable tube (local supply) onto the drain wire.
Drain wire
Attach the crimp-on lug (FV2-P4K) to the core.
Vinyl tape

Fabrication of DPYC-1.5

Inner sheath
Armor
Vinyl tape
Attach the crimp-on lug (FV2-P4K) to the core.

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.

FURUNO PR-241 AC DC Power Supply Unit - d3

Screws
Terminal Cover

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)

FURUNO PR-241 AC DC Power Supply Unit - d4

Binding screws
TPYC-1.5
(Cable from Ship’s main)
DPYC-1.5
(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

CAUTION

To prevent noise and interference, separate the AC IN, DC IN and DC OUT cables of this unit from connected equipment’s cables.

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)

FV2-P4K (or equivalent) FV1.25-M3(LF) RED K (or equivalent)

Fabrication of TPYC-1.5

Note: Attach the Ferrite cores as close as possible to the unit.

Inner sheath
Armor
Pass the heat shrinkable tube (local supply) onto the drain wire.
Drain wire
Attach the crimp-on lug (FV2-P4K) to the core.
Vinyl tape
Attach the ferrite core (GRFC-10, optional supply)
Attach with no wrapping.

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.

Inner sheath
Armor
Vinyl tape
Attach the crimp-on lug (FV2-P4K ) to the core.
Attach the ferrite core (GRFC-13, optional supply)
Wrap the cable cores around the ferrite core twice.

Fabrication of TTYCSLA-1

Note: Attach the Ferrite cores as close as possible to the unit.

Inner sheath
Armor
Vinyl tape
Attach the crimp-on lug (FV1.25-M3(LF) RED K) to the core.
Attach the ferrite core. (GRFC-10, optional supply)

Installations for dual use, make the necessary connections with the following procedure.

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.
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)

FURUNO PR-241 AC DC Power Supply Unit - d8

Main
Sub
DC IN
DC OUT
Communication
AC IN
Current Share

The maximum length of the cable that connects between the main and sub is as shown in the table below.

Purpose

| Cable| Maximum Length|

Pattern of Cable

---|---|---|---
AC IN| TPYC-1.5| 90 cm|
DC IN| DPYC-2.5| 90 cm|
DC OUT| 50 cm
Current Share| TTYCSLA-1| 70 cm|
Communication| 20 m

Note 1: To prevent current imbalance, the input and output cables indicated in the below figures must be the same length and the difference in the resistance value of the cables must be 3 mΩ or less.

In the case the connected equipment is single

PR-241
(Main)
PR-241
(Sub)
Same Length
Connected Equipment

In the case the connected equipment is multiple

PR-241
(Main)
PR-241
(Sub)
Same Length
Terminal (Local supply)
Connected Equipment

: Output from the main
: Output from the sub

Note 2: When backing up power from the battery, signal cable connection is not required.

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.

4. HOW TO USE THE UNIT

Use the power switch to turn this unit on.

FURUNO PR-241 AC DC Power Supply Unit - f1

Power Switch
LED
Breaker

After turning on the power switch, the LED lights up as follows:

AC is selected as the input: Green
Battery is selected as the input: White
No Input: OFF

Procedure in dual use

Note 1: Do not use the ID SW and Terminate SW of this unit when using this unit in dual.

Note 2: To avoid breaking the breaker, set the total current to 20A or less before starting the unit up.

The procedure in dual use is as follows:

Note: If you do not follow this procedure, the breaker may break.

Turn on the main switch.
Turn on the sub switch.
Turn on the ship’s main switch.

Maintenance

If the LED does not turn on when the power switch is turned on, contact your local dealer.
If the breaker breaks, check the cause and take corrective action before resetting the breaker.
If the breaker is cut off again after doing above, contact your local dealer.

5. JIS CABLE GUIDE

Cables listed in the manual are usually shown as Japanese Industrial Standard (JIS). Use the following guide to locate an equivalent cable locally.

JIS cable names may have up to 6 alphabetical characters, followed by a dash and a numerical value (example: DPYC-2.5).
For core types D and T, the numerical designation indicates the cross- sectional Area (mm2) of the core wire(s) in the cable.
For core types M and TT, the numerical designation indicates the number of core wires in the cable.

1. Core Type
D: Double core power line
T: Triple core power line
M: Multi core
TT: Twisted pair communications (1Q=quad cable)

2. Insulation Type
P: Ethylene Propylene Rubber

3. Sheath Type
Y: PVC (Vinyl)

4. Armor Type
C: Steel

5. Sheath Type
Y: Anticorrosive vinyl sheath

6. Shielding Type
SLA: All cores in one shield, plastic tape w/aluminum tape
-SLA: Individually shielded cores, plastic tape w/aluminum tape

DPYCY TPYCY MPYC-4 TTYCSLA-4

a) Designation type
b) # of twisted pairs
c) # of cores

The following reference table lists gives the measurements of JIS cables commonly used with Furuno products:

Type

| Core| Cable Diameter
---|---|---
Area|

Diameter

DPYC-1.5| 1.5mm²| 1.56mm| 11.7mm
DPYC-2.5| 2.5mm²| 2.01mm| 12.8mm
DPYC-4| 4.0mm²| 2.55mm| 13.9mm
DPYC-6| 6.0mm²| 3.12mm| 15.2mm
DPYC-10| 10.0mm²| 4.05mm| 17.1mm
DPYCY-1.5| 1.5mm²| 1.56mm| 13.7mm
DPYCY-2.5| 2.5mm²| 2.01mm| 14.8mm
DPYCY-4| 4.0mm²| 2.55mm| 15.9mm
MPYC-2| 1.0mm²| 1.29mm| 10.0mm
MPYC-4| 1.0mm²| 1.29mm| 11.2mm
MPYC-7| 1.0mm²| 1.29mm| 13.2mm
MPYC-12| 1.0mm²| 1.29mm| 16.8mm
TPYC-1.5| 1.5mm²| 1.56mm| 12.5mm
TPYC-2.5| 2.5mm²| 2.01mm| 13.5mm
TPYC-4| 4.0mm²| 2.55mm| 14.7mm
TPYCY-1.5| 1.5mm²| 1.56mm| 14.5mm
TPYCY-2.5| 2.5mm²| 2.01mm| 15.5mm
TPYCY-4| 4.0mm²| 2.55mm| 16.9mm
TTYCSLA-1| 0.75mm²| 1.11mm| 9.4mm
TTYCSLA-1T| 0.75mm²| 1.11mm| 10.1mm
TTYCSLA-1Q| 0.75mm²| 1.11mm| 10.8mm
TTYCSLA-4| 0.75mm²| 1.11mm| 15.7mm
TTYCY-1| 0.75mm²| 1.11mm| 11.0mm
TTYCY-1T| 0.75mm²| 1.11mm| 11.7mm
TTYCY-1Q| 0.75mm²| 1.11mm| 12.6mm
TTYCY-4| 0.75mm²| 1.11mm| 17.7mm
TTYCY-4SLA| 0.75mm²| 1.11mm| 19.5mm
TTYCYSLA-1| 0.75mm²| 1.11mm| 11.2mm
TTYCYSLA-4| 0.75mm²| 1.11mm| 17.9mm
TTPYCSLA-1| 0.75mm²| 1.11mm| 9.2mm
TTPYCSLA-1T| 0.75mm²| 1.11mm| 9.8mm
TTPYCSLA-1Q| 0.75mm²| 1.11mm| 10.5mm
TTPYCSLA-4| 0.75mm²| 1.11mm| 15.3mm

PR-241

SPECIFICATIONS OF AC/DC POWER SUPPLY UNIT

PR-241

1 GENERAL

1.1 Rated input voltage 100-230 VAC, 1 phase, 50-60 Hz and 24 VDC from backup battery
1.2 Input current under no-load 0.8 A max. (60 Hz), 1.0 A max. (50 Hz)
1.3 Rated output voltage 24 VDC±5%: 10 A max. (up to two units connectable)
1.4 LED indication Input source status (AC: green, DC: white)
1.5 Protective circuit Over current for in/out and over voltage for output
1.6 Switching backup battery Auto switching from relay
1.7 AC failure detection Relay contact: 1 A, 250 VAC

2 ENVIRONMENTAL CONDITIONS

2.1 Ambient temperature -15°C to +55°C (storage: -20°C to +70°C)
2.2 Relative humidity 93% or less at +40°C
2.3 Degree of protection IP22 (tabletop mount), IP20 (bulkhead mount)
2.4 Vibration IEC 60945 Ed.4