Vingtor 3005020018, Техническое руководство

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16
A100K11162 v1
ETB Command Talk-Back & Public Address System
Installation & Operation Manual
Terminal block K1 - K5 (for ETB-5)
Terminal block K1 - K10 (for ETB-10/ETB-100)
● No. 1-2: substation line for ETB-10 (not in use for ETB-100)
● No. 3-4: 24V DC to extra signal device
● No. 5: common ground point for each substation screen
Terminal block K11
● For power supply
Terminal block K12
● For power amplifier (NOT for ETB-5/ETB-10)
Terminal block K13
● Parallel microphone and parallel loudspeaker
Terminal block K14
● Potential-free contact for activating/muting external system or extra
signal device
Terminal block C11 (ETB-100/ETB-100A only)
● 100V line in from power amplifier
Terminal block C12 (ETB-100/ETB-100A only)
● Muting of external alarm system
Terminal block K1 (ETB-100A only)
● Located on PCB labeled ETB-ALL-SUB
● For connection to Emergency PA station:
- No. 1-2 audio
- No. 3-4 switch
- No. 5 screen
2.5 Cable Requirements
All signal cables have to be approved ship cable of type twisted-pair with
outer braided copper shield.
L
See cable connection diagrams in Section 7 for further details.
The screens must be interconnected in junction boxes and grounded in a
common point in the central unit only.
Terminal block K1 – K10 no. 5 is the ground point for each substation
screen.
The power cable must be approved ship cable of minimum 3 x 0.75 mm
2
.
Maximum cable length = 500 meters
L
The central unit has to be connected to the vessel’s central ground. Proper
grounding is essential for reliable operation.
L
Ensure that signal cables are separated from power cables.