KROHNE OPTISYS SLM 2100, Handbook, Page: 34 / 88

4
ELECTRICAL CONNECTIONS
34
OPTISYS SLM 2100
www.krohne.com 01/2017 - 4002737304 - MA OPTISYS SLM 2100 R04 en
4.8 Description and properties of the output and the input
4.8.1 Current output
The electrical properties of the current outputs are described in the following table.
The function of outputs depends on which measuring function has been selected. It is changing
automatically if the measuring function has been changed as outlined in the following table.
Error signalling is possible via current output (error current & error class adjustable via
software). For further information refer to
Menu C, setup
on page 53.
Output range 4...20 mA
Mode of output Active
Electrical isolation All outputs are electrically isolated from the power
supply
Load resistance (L
R
)
≤
550
Ω
at I
max
≤
22 mA
Nominal internal voltage (U
int, nom
) 15 VDC
Measuring function
Level Profile Zone tracking
Current output A Height / depth of
concentration (fluff)
1
Height / depth of the
sensor position
1
Height / depth of the
sensor position
1
Current output B Height / depth of
concentration (sludge
blanket)
1
Measured concentration
2
Measured concentration
2
1 Range is calculated automatically according to the parameters filled in the extended setup; range of analog output is
shown in the I/O setup of the device.
2 Concentration range of the output must be defined in the I/O setup of the device.