MR MESSKO COMPACT User Manual

9 Fault elimination
995831400/02 EN
Status bit value/char-
acteristic/detail
Cause Remedy
4: Pointer out of mea-
suring range: Pointer
angle is 20 angular de-
grees smaller than the
minimum angle (MIN
mark on scale) or 20
angular degrees larger
than the maximum an-
gle (MAX mark)
▪ Device defective
▪ Extremely low oil
temperatures
▪ Extremely high oil
temperature
▪ Extremely high CT
current
▪ Extremely high gradi-
ent (with winding
temperature indica-
tor)
▪ Contact Maschinenfabrik
Reinhausen GmbH.
▪ Are the oil temperatures/CT
currents/gradients actually ex-
tremely low or high? Compare
the reported temperature with
the pointer position
8: 4…20mA output
deviation between tar-
get current and read-
back current too high
▪ Current loop is open
(continuous load re-
sistance) because
you do not want to
use the current loop
at all
▪ Interruption of the
4…20mA current
loop
▪ Load resistance too
high (possibly the
conductor length and
conductor cross-sec-
tion not taken into
consideration)
▪ Supply voltage too
low
▪ Moisture in the de-
vice
▪ Extremely high ambi-
ent temperatures
and/or CT currents
(with winding temper-
ature indicator)
▪ Device defective
▪ If you are not using the 4…
20mA analog output, we rec-
ommend deactivation via
Modbus. Alternatively, you
can connect a resistor
(590Ohm ±20%/0.5W) as
load resistance. If necessary,
you can use a wire bridge.
▪ Check cables: loop open?
Parallel paths? Current leaks?
▪ 4…20mA cable: shielded, if
possible with shielding on
both sides; use twisted pair;
do not run next to cables with
interference
▪ Check for moisture/creep in-
side the device
Table13: Status codes

MR MESSKO COMPACT Specifications

General

Brand	MR
Model	MESSKO COMPACT
Category	Thermometer
Language	English