16 CSP-204 ● CSP-208 ● CSP-104 ● CSP-108 SATEL
5.2.7 Communication bus
The communication bus connecting the control panel, repeater panel and CSP-ETH module
should be made with the use of UTP type cable (unscreened twisted pair). One pair of wires
should be used for data transmission (terminals A and B), and the other wires should be
connected to the COM terminal. The communication bus length can be up to 1000 meters. At
the beginning and at the end, the communication bus should be loaded with 100 Ω resistors.
Fig. 12. Communication bus connecting the control panel and the repeater panel – an
example.
5.2.8 Main power supply
The main power source is 230 V AC / 50 Hz electric system. The control panel power supply
unit should be connected to an unswitched 230 V AC power circuit.
Before connecting the power supply unit to a 230 V AC circuit, the circuit must
be de-energized.
1. Remove the screw fixing the cover of power supply
terminals.
2. Remove the cover of power supply terminals.
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