Instructions for Use
– SCHMIDT
®
LED Measured Value Display MD 10.015
Page 24
9 Service information
Eliminating malfunctions
The following Table 5 lists possible errors (error images). A description of
the way to detect errors is given. Furthermore, the possible causes and
measures to be taken to eliminate errors are listed.
Error image
Possible causes
Troubleshooting
Displays off &
analog output to zero
Supply voltage U
B
:
No U
B
present
U
B
(DC) wrong polarity
U
B
too low
Measured value display de-
fective
Supply voltage:
Check if connected cor-
rectly to power supply
Check voltage type
(DC, AC)
Check if there is supply
voltage at terminals
(cable break)
Measuring value too
large / small
Incorrect configuration of
sensor's measuring range
Check whether the analog
measuring value is cor-
rect (
)
Check configuration of
start (
/
) and end
values (
/
) of sen-
sor's measuring range
Analog measured value
(
) too large / small
Jumper for signal mode of
analog input
Set jumper according
signal mode
Input configuration
Check input configuration
(
/
) according input
signal
Analog signal too large /
small
Output configuration
Check configuration
Unexpected values at
alarm output
Configuration alarm output
Check configuration
Table 5
