User Manual

Table Of Contents
KTD-405/KTD-405A/KTD-405-2D Controller Keypad
User Manual
14
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 on page 8.
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)
PIN 3 to RS-485 A
PIN 6 to RS-485 B. (PINs 2, 4, 5, 7, and 8 are not connected.)
12 VDC (observe polarity, if provided transformer not used)
RS-485 OUT (data out to devices such as multiplexers or DVMRe’s; ground at mux/DVMRe)
KEYPAD IN (RS-422 and RS-485 data in from keypad; RS-422 data and power out to keypad)
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))
12345678
78910653214
POWER
12 VDC
BIAS
SWITCH
78910653214
RS485
A
B
A
B
+
AUDIO KEYPAD RS485 RS485
A
B
RS422 IN
RS422 OUT
SPEAKER SHIELD
SPEAKER
REMOVABLE
TERMINAL STRIP
EARTH GROUND
78910653214
POWER
12 VDC
BIAS
SWITCH
78910653214
RS485
A
B
A
B
+
AUDIO KEYPAD RS485 RS485
A
B
RS422 IN
RS422 OUT
SPEAKER SHIELD
SPEAKER
REMOVABLE
TERMINAL STRIP
EARTH GROUND
A
B
C
D
E
F
G
H