Furuno LH-3000 manual Power connection, Intercom speaker option, Fabrication of speaker cable

1. INSTALLATION

Power connection 77

3

The LH-3000 is intended for

use with a 13.6 VDC power	Sheath		Armor
	Drain wire fabrication
supply. Connect the power
	L*		* Length long enough to	Armor
cable (local supply) to the
	15	5	reach ground terminal.	Sheath
terminals labeled “13.6V”.
Use cable type DPYC-1.5 or				φ = 11.7 mm
equivalent. Fabricate the			Cut the sheath.	Conductor
				S = 1.5 mm 2
cable as shown below. For	Solder drain wire			φ = 1.56 mm
			15 10	DPYC-1.5 Sectional view
longer runs the wire size of	7
leads should be increased

accordingly to minimize line

losses. The wire connected to the positive (+) terminal must be connected to the positive terminal on the DC power source, and the wire connected to the negative terminal (-) must be connected to the negative terminal on the DC power source. If the power leads are reversed the fuse (inside the Loud Hailer) will blow.

Intercom speaker (option)

Up to four intercom speakers may be connected to the intercom speaker terminals labeled CAL1-CAL4. Connect each speaker to the terminal block according to desired intercom speaker selection. The cable end is prefabricated. However, to meet EMC requirements the length of the cable must be less than 1 m. If the distance between the Loud Hailer and intercom speaker is greater than 2 m (max. 20 m), use a junction box (local supply). For the connection to the junction box use cable type CO-SPEVV-SB-C 0.2X2P (option) and fabricate it as below. In this case, the length of the cable between the junction box and an intercom speaker must no be more than 1 m regardless of whether the equipment must meet EMC requirements or not.

Loud Hailer

2 m max.

Intercom Speaker

Distance between loud hailer and intercom speaker is less than 2 m.

Loud Hailer

2-20 m max.

Junction Box

1 m max.

Intercom Speaker

Distance between loud hailer and intercom speaker is 2-20 m.

Outer sheath

45		Remove the outer sheath and
Inner sheath
		armor by 45 mm.
	11	7
		Remove the inner sheath by 11 mm,
		and the sheath of the cores by 7 mm.

Twist and trim the shield.

Vinyl tape

Cut the unused cores.

Solder a vinyl wire to the shield. Tape the sheath.

Vinyl wire

Fabrication of speaker cable

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