Rs485 Expansion Module (Gd-520 Only) - Honeywell Galaxy Dimension Series Installer Manual

Galaxy Dimension Installer Manual
The 7 transistorised outputs on the Galaxy Dimension can be configured to open collectors by setting the dip
switch SW3 to the OFF position.
NOTE: Output 2 on RIO 0 (relay output) is not affected.This is a form C relay that can switch up to 1 amp
at 24 volts DC.
The following table shows which outputs are controlled by which switches.

RS485 Expansion Module (GD-520 only)

The RS485 Expansion Module is attached to the GD-520 to give 2 extra RS485 (AB) lines.
This module can also be added to a GD-264 to convert it into a GD-520. Jumpers LK1 and LK2 can be
removed to disable the on-board end-of-line resistors.
SKT2
GND
+12V
GND
+12V
TX
RX
CTS
RTS
+12V
1 2 3 4 5
0V 0V RIO 0 0V
(SW3)
1
2
3
4
5
6
7
Table 2-1. SW3 Transistorised Outputs Control
Twin
RS485
lines
+12V +12V
6 7 8 1 2 3 4
0V 0V 0V RIO 1
Figure 2-3. RS485 Expansion Module
RS485 Expansion Module
RIO Output
0 1
0 3
0 4
1 1
1 2
1 3
1 4
RS485
EXPANSION
MODULE
Jumpers
ON
LK1 1 2 3
LK2
A3 B3 A4 B4
1
+12V
5 6 7 8
0V 0V
2-3
4 5 6 7 8
N/O C N/C
1 2 3 4
3 4
2
RIO 1
RIO 0
-BAT
+BAT
14.5
AUX G
N
TAMP
D