KROHNE DK 37-H250 M8 ATEX II2G Ex i EN - Manual (Page 12)

4
ELECTRICAL CONNECTIONS
12
DK37/M8 - H250/M8
www.krohne.com 09/2013 - 4000760402 MA DK37 M8 AD II2G R02 en
Electrical connections
4.1 General notes
The limit switch or electronic signal output with protection level "ia" or "ib" is electrically
connected in the terminal compartment of the display housing. Permissible maximum values
(electrical data) must be observed. Observe the specified polarities.
Connecting cable
The connecting cables must be selected according to prevailing installation standards (e.g.
EN 60079-14).. The outer diameter of the connecting cable must be within the sealing range of
the cable entry. The connecting cables must be fixed and laid so they are sufficiently protected
against damage.
All cores that are not used must be securely connected to the earth potential of the hazardous
area or carefully insulated against each other and against earth (test voltage ≥ 500 V
eff
).
Connection diagrams
Indicator M8M - M8MG
1 Terminal Kmin
2 Terminal Kmax
Indicator M8E - M8EG
1 Terminal signal output 4...20 mA
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