Electrical Connection; Connections; Terminal Layout - Endress+Hauser RIA 261 Manual De Instrucciones

Digital field display
"
#
•
The housing gaskets must be clean, undamaged and must
be placed in the seal recess in the unit. If this is not the case
it should be cleaned, dried or if necessary replaced.
•
The housing lid screws and cable glands must be tightened.
5

Electrical connection

Attention: If connecting the unit in an explosion hazardous area,
please take note of the notes and connection diagrams in the
Ex-specific documentation in this manual.

5.1 Connections

5.1.1 Terminal layout

The terminals for the 4 to 20 mA circuit are found under the
housing lid on the upper right side of the unit. The terminal
block is a plug-in version and can be removed from the
connection strip when wiring up the unit.
Measured signal (+) 4 to 20 mA
Terminal for further instrumentation (link
with terminal 4)
Measured signal (-) 4 to 20 mA
Terminal for further instrumentation (link
with terminal 2)
5.1.2 Electrical connection
Both the terminal layout and the connection values of the field
mounted display conform to the Ex requirements.
The unit is only meant for use in a 4 to 20 mA current loop
circuit. Potential equilibrium must be guaranteed on the current
loop (inside and outside the hazardous area). In order to
achieve this use the earthing (ground) lug on the lower left area
of the housing.
5 Electrical connection
Signal input
Terminal
Signal input
Terminal
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