Connecting A Multiplexer Or Dvmre And Domes - GE KTD-405 User Manual

14 KTD-405/KTD-405A/KTD-405-2D Controller Keypad
User Manual

Connecting a multiplexer or DVMRe and domes

Adhere to all installation guidelines while making connections, including your local codes and those provided
in Installation guidelines
Figure 9. Connecting a keypad (KTD-405 shown) to a multiplexer or DVMRe (shown) and domes
PIN 1 to RS-485 shield (ground one end only)
A
PIN 3 to RS-485 A
B
PIN 6 to RS-485 B. (PINs 2, 4, 5, 7, and 8 are not connected.)
C
12 VDC (observe polarity, if provided transformer not used)
D
RS-485 OUT (data out to devices such as multiplexers or DVMRe's; ground at mux/DVMRe)
E
KEYPAD IN (RS-422 and RS-485 data in from keypad; RS-422 data and power out to keypad)
F
G RS-422 IN (data in from devices such as alarm units, ASCII converters, or keypads (see guidelines))
RS-422 OUT (data out to devices such as domes, switchers, or keypads (other than KTD-405s))
H
on page 8.
EARTH GROUND
A
RS485
B
A
RS422 IN
B
A
RS422 OUT
B
SPEAKER SHIELD
+
SPEAKER
EARTH GROUND
A
RS485
B
A
RS422 IN
B
A
RS422 OUT
B
SPEAKER SHIELD
+
SPEAKER
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