Dräger Flame 5000 Instrucciones De Uso página 11

3.2.5 4-20 mA connections
The following table provides a function summary of each terminal if the detector
is ordered in 4-20 mA mode.
Terminal Terminal No.
+24 V 1
0 V 2
A 3
B 4
VID+ 5
VID- 6
485A 7
+24 V 8
0 V 9
C 10
D 11
ALRM 12
ALRM 13
485B 14
Instructions for use |
Dräger Flame 5000
Relay mode wiring diagram
Description
+24 V supply A
0 V supply A
Tie to +24 Volts at panel
4-20 mA source
Video +Ve
Video -Ve
RS485 termination +Ve
+24 V supply B optional
0 V supply B optional
Not used
If the detector is connected in the above manner and a fire alarm is signalled,
Do not connect
then the 4-20 mA outputs generate 18 mA. If a fault develops, the 4-20 mA
signal indicates 0 or 2 mA dependant on the fault (see table for default current
Do not connect
levels). If terminals 3 and 4 are disconnected from the control system and
polarity across power supply terminals 1 and 2 is reversed, these wires then
Not used
provide a RS485 connection to the detector. This connection may then be used
RS485 termination -Ve
to upload or download information to the detector.
Default 4-20 mA settings
Event
Power/detector fault
Optical fault
Healthy condition
Alarm
Over range
1 7
8 14
6
5
4
2
1
Output
0 mA
2 mA
5 mA
18 mA
21 mA
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Installation
Video +ve
Video -ve
4-20 mA source
0 VDC
+24 VDC
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