Furuno FS-2570, FS-1570 Power Supply Unit option, AC and DC power switches, Power supply units

1 OPERATIONAL OVERVIEW

1.10 Power Supply Unit (option)

The control unit works directly on 24 VDC or through a Power Supply Unit on AC mains supply (115 or 230 VAC). The power supply unit is type PR-300, supplying 24 VDC power (20 A) to the FS-1570 or type PR-850A, supplying 24 VDC (40 A) to the FS-2570. Both 115/230 VAC and 24 VDC power can be connected simultaneously. In this case, the system normally operates on the AC mains supply and when AC power is lost, the PSU automatically switches to the DC power source.

This power supply arrangement satisfies the GMDSS requirements. The FS-1570/FS-2570 can be operated directly from 24 VDC without a power supply.

OVEN power supply: The crystal oven is always powered even when the Power Switch is OFF, provided the mains switchboard is turned on.

AC and DC power switches

Both AC and DC power switches on the PSU can be always kept on. (These switches are provided to turn off the power supply for maintenance.) The control unit may be turned on or off with the PSU kept on.

Red Light Green Light Breaker Power Lamp

			PR-300
100V	10A	125V 20A
220V	5A
	ON	ON
	OFF	OFF
	AC IN	DC IN	DC OUT	Terminal
	L N G	+ -	+ - 24V + -

Cover

Lamp (red): Lights when AC power source is in use.

Lamp (green): Lights when DC power source is in use

PR-300

POWER

ON

ON

OFF

AC INPUT 50/60Hz DC OUTPUT

PR-850A

Power supply units

Note: Both lamps light when changing to DC power supply (PR-300). These lamps also light when the internal temperature goes too high.

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