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2.2 Power supply and SEL-Bus system
SMF retrofit is used together with a Seldén Power supply and SEL-Bus system, and a Seldén electric winch
for synchronized outhaul.
The mast motor is connected to motor control unit (MCU) for furling masts. Via the SEL-Bus network, the fur-
ling mast MCU can communicate with the winch MCU and OUT/IN control buttons. Seldén's electric winch,
all power supply and SEL-Bus system parts are sold separately. Parts and packages are described in Seldén
Power Supply and SEL-Bus system: Order guide 597-283-E.
System illustration
The illustration shows an example of a Synchronized Main Furling network installation. The complete Power
Supply and SEL-Bus system of each customer will vary and can include additional units and functions.
1. Battery (not included)
2. Main switch/fuse
3. Power supply unit (PSU)
Converts 12/24V to 42V
4. Push buttons for Synchronized
Main Furling
5. Electric winch
6. Motor Control Unit (MCU),
Electric winch
7 Push buttons for Electric winch
8 Mast motor
9 Motor Control Unit (MCU) Furling mast
10. SEL-Bus backbone cables and connections
6
9
6
3
8
5
7
2
1
10
Ill. Dan Ljungsvik/Seldén 2019
4
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