Endress+Hauser RMA 421 - Page 77

On Flashes Display shows:

NNNNN 
Cable open circuit
recognition -
On 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.
E 210 Please check the
sensor connection to
the analogue input.
On Flashes Display shows:

UUUUU 
Over 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.
E 212 Please check the input
signal at the analogue
input.
On Flashes Display shows:
-
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)
E 213 Please check the
sensor connected to
the input for correct
operation.
On Flashes The 7 segment
display shows a
measured value
The displayed
measured value is
under the 0% value
of the analogue
output.
E 240 Check if a valid input
signal is connected, or
set a smaller value to
the 0% analogue
output value.
On Flashes The 7 segment
display shows a
measured value
The displayed
measured value is
over the 100% value
of the analogue
output.
E 241 Check if a valid input
signal is connected, or
set a larger value to
the 100% analogue
output value.
On Off Display shows:

E290 
Setting of the
comma position is
not possible, as
minimum one digital
value cannot be
displayed.
E 290 Acknowledge using
the E push button.
(Fault message is
deleted). Check all
values with this
comma position and
reduce if required.
Process transmitter
75