Dokument
UMA0132
Rev
3
Sid
3 (16)
Standard configuration:
Out(1) is carbon monoxide output, Out(2) is carbon dioxide
output and Out(3) is relay output. Out(4) is error status OR Out(3) is open.
Out(1) = measuring signal for carbon monoxide concentration
Out(2) = measuring signal for carbon dioxide concentration
Out(3) = ON/OFF of demand of air quality. The relay is open in alarm situations and
at power loss. NOTE! There is a two minutes delay after start-up.
Out(4) = error status OR Out(3) open, carbon monoxide concentration > 35 ppm OR
carbon dioxide concentration > 1500 ppm. There is a two minutes delay after start-
up.
Figure 4 The control signal of air quality
# in
figure 4
Terminal
Standard
configuration
Standard settings
Standard function
1
2
Power (+)
Power ground (-)
24 VAC/DC+
(+-20%), 3W
24 VAC/DC-
2W without output load
The same ground reference has to
be used for the
aSENSE mIII
unit
and for the control system!
3
Out(1)
0-10VDC
0-100 ppm CO
Measuring signal carbon monoxide
4
Out(2)
0-10VDC
0-2000 ppm CO
2
Measuring signal carbon dioxide
5
Unmarked Signal Ground (-)
Connected to G0 via PTC fuse
6
7
Relay
Closed
Open
< 30 ppm CO
< 1400 ppm CO
2
> 35 ppm CO
> 1500 ppm CO
2
Air control Delay two minutes after
start.
The green LED is lit
The relay is open in alarm situations
and at power loss. The red LED is lit
and the green is not lit.
8
Out(4)
Open
collector
Open
Closed
No error detected
AND normal gas
concentrations
Error detected OR
high gas
concentrations
Error status Delay two minutes after
start.
The red LED is lit if an error OR high
gas concentrations are detected. If
an error is detected also the yellow
LED is lit
Table I.
Default configuration of
aSENSE mIII
.
~
+
