Honeywell Galaxy 2 Series - Inputs; Supply; Data Buses; RS485 Wiring Configurations

17
Galaxy 2 Series Installation Manual
Figure 12. Daisy-chain Configuration
Data Buses
Two separate data buses are available to connect the Galaxy 2–44+ panel to its peripherals.
Communication between the Galaxy 2–44+ control panel and the peripherals attached to it (see Figure 1),
takes place on the data bus. The control panel constantly monitors the peripherals attached to it. A break in
the communication from any of the peripherals generates a tamper alarm.
RS485 Wiring Configurations
The system must be wired in a daisy-chain configuration. That is the A line from the previous peripheral is
connected to the A terminal of the current peripheral and then on to the A line of the next peripheral.
The RS485 (AB) line must have a 680 Ω resistor fitted across the A and B terminals of the last peripheral on
the line.
Figure 11. Trigger Header
Inputs
Line Fault: This input tells the panel that the communicator has a telephone line fault (active low).
Reset: This input from the communicator resets the panel on a low to high signal (negative removed).
Supply
A 100 mA, 12V output is also provided. The output is fused by the on-board AUX FUSE (F2).
Trigger Header
Reset
Line Fault
GND
+12V
Trig 1
Trig 2
Trig 3
Trig 4
Trig 5
Trig 6
Trig 7
Trig 8
Galaxy 2-44
Control Panel
680 Ω
Factory fitted on PCB
A
B
A
B
680 Ω EOL
A
B
Keypad
OR
Peripheral
GALAXY 44 V1.0
09:51 01/08/04
1
2
3
A
4
5
6
B
7
8
9
ent
*
0
#
esc
GALAXY 44 V1.0
09:51 01/08/04
1
2
3
A
4
5
6
B
7
8
9
ent
*
0
#
esc