Connecting The Alarm Input/Output - Samsung SRN-472S User Manual

CONNECTING THE ALARM INPUT/OUTPUT

The Alarm In/Out port at the back is composed of the following.
VDD
1.2KΩ
I/O
GND
GND
• ALARM IN 1 ~ 4 : Alarm Input Port
• ALARM OUT 1 ~ 3 : Alarm Output Port
1 2 3 4 N.O
ALARM IN
( 5mA sink )
Sensors
Alarm
Mechanical
switch
or
C N.C N.O C N.O
ALARM OUT
( 30VDC 2A,
125VAC 0.5A MAX )
AL AR
AL AR
IN M
OU M
T
G
Open collector
output device
C G
English _19