MSA DF-8500 C - Page 38

DF-8500 C Point type combustible gas detector with measuring range of 0~100%LEL
Figure 5-2 DF-8500 C internal wiring (Low alarm relay configured as passive mode)
Table 1 Terminal Names and Corresponding Applications
39
485B 485A 24V- 24V+ 4~20mA 24V- 24V+
4-20mA 24V- 24V+
Terminal name
Application
24V +
Connect to DC 24V+
24V -
Connect to DC 24V-
4-20MA
(4~20) mA output of device
NO
Not energized, normally open
COM
Common terminal
NC
Not energized, normally closed
Passive Jumper
P2 P1
P3
the black wire of
AF5000 connect to COM
of the low alarm relay
常闭 公共端常开
高报继电器 低报继电器
NC COM NO
H-ALARM L-ALARM
故障继电器
常开 常闭
FAULT RELAY NO NC
公共端 公共端
COM COM
常闭 常开
P4
NC NO
5V+
Material in the dashed
TXD
P6
line rectangle is
RXD
the red wire of AF5000
GND
connect to power input “+”
optional
terminal of DF-8500
Remote
P5
Sensor
Sensor
24V+
Connector
24V-
4~20mA
Controller
JP2
JP3
1-2
1-2
有源
2-3
2-3
无源
Alarm Device