Endress+Hauser RMA 421 Bedienungsanleitung Seite 77

n Flashes Display shows:
“
NNNNN
n Flashes Display shows:
“
UUUUU
n Flashes Display shows:
“——-”
n Flashes The 7 segment
display shows a
measured value
n Flashes The 7 segment
display shows a
measured value
n ff Display shows:
“
E290
Cable open circuit
” recognition -
n an input range of
4 - 20 mA the
sensor cable to the
unit has been
broken The series
circuit current is
below 3.60 mA.
Under range -
The measurement
signal at the
analogue input is
> 10% below the
valid measurement
range. Not valid for
input range 4-20 mA.
ver range -
” The measurement
signal at the
analogue input is
> 10% over the valid
measurement
range, > 21 mA
when using a
4-20 mA input range.
Fault signal
analysis -
When using a
4-20 mA input range
the input signal from
the sensor is outside
the specified range
( > 3.60 ...< 3.85 mA
or
> 20.4...< 21.0 mA)
The displayed
measured value is
under the 0% value
of the analogue
output.
The displayed
measured value is
over the 100% value
of the analogue
output.
Setting of the
” comma position is
not possible, as
minimum one digital
value cannot be
displayed.
Process transmitter
E 210 Please check the
sensor connection to
the analogue input.
E 212 Please check the input
signal at the analogue
input.
E 213 Please check the
sensor connected to
the input for correct
operation.
E 240 Check if a valid input
signal is connected, or
set a smaller value to
the 0% analogue
output value.
E 241 Check if a valid input
signal is connected, or
set a larger value to
the 100% analogue
output value.
E 290 Acknowledge using
the “E” push button.
(Fault message is
deleted). Check all
values with this
comma position and
reduce if required.
75