
GST100 Intelligent Fire Alarm Control Panel
Installation and Operation Manual
Page 11
Fig. 4-2
Description: Remove the terminal resistor. Connect the cable in correct polarization. Add a
4.7k
Ω resister to the end of each loop.
NOTE: The sounders are polarized. Note polarization in connection. The maximum
current is 500mA. Do not overload with sounders and strobes.
4.4.2 Loop Connection
The connection of loop bus is shown as Fig. 4-3.
Fig. 4-3
4.4.3 Connection of Communication Loop
Sounder
Terminal
Resistor 4.7k
Diode
Diode
Sounder
R+
R-
LOOP OUT
LOOP IN
Addressable
devices
Addressable
devices
Loop
隔离器
Loop
隔离器
Summary of Contents for GST100
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