mru SWG 100 biogas, User Manual

Page: 53 / 141

MRU GmbH SWG 100 User Manual
Page 53 of 141
Connection of the external control via one 4-20 mA input signal
The user can control the analyzer with only the first 4-20mA input (see sketch
below). The different commands will be given by the changing of the current
signal. The offset-signal is 4 mA. Every 1 mA step describes a condition of for the
external control. Overall the analyzer can take 16 different statuses. The first status
is by 5 mA (4 mA+1 mA) the second is by 6 mA (4 mA + 2 mA) and so on until the
20mA signal is reached.
The connection of the one 4-20 mA signal is a two-wire connection.
Status of
external signal
source I [mA]
Status
number
Description
4 0 Automatic sampling point switching
5 1 Analyzer is sampling the point SP1 (*1, *2)
6 2 Analyzer is sampling the point SP2 (*1, *2)
7 3 Analyzer is sampling the point SP3 (*1, *2)
8 4 Analyzer is sampling the point SP4 (*1, *2)
9 5 Analyzer is sampling the point SP5 (*1, *2)
10 6 Analyzer is sampling the point SP6 (*1, *2)
11 7 Analyzer is sampling the point SP7 (*1, *2)
12 8 Analyzer is sampling the point SP8 (*1, *2)
13 9 Analyzer is sampling the point SP9 (*1, *2)
14 10 Analyzer is sampling the point SP10 (*1, *2)
15 11 -
16 12 -
17 13 -
18 14 Remote reset of all system alarms
19 15 -
-
+
I1