Printed in the Federal Republic of Germany
TR-Electronic GmbH 2016, All Rights Reserved
10/31/2018
TR - ECE - BA - DGB - 0131 - 02
Page 95 of 103
7 Troubleshooting and diagnosis options
7.1 Optical displays, LEDs
The measuring system is equipped with two LEDs in the bus cover: one red LED (BF) for indicating
errors and one green LED (STAT) for indicating status information.
When the measuring system is started up, both LEDs flicker briefly. Thereafter, the indications depend
on the operational status of the measuring system.
red LED
green LED Cause
Remedy
off
off
Absence of voltage supply
Check voltage supply, wiring
Bus cover not mounted and screwed on
correctly
Check bus cover for correct seating
Bus cover defective
Replace bus cover
Hardware error, measuring system
defective
Replace measuring system
on
10 Hz
Parameterization- or configuration error:
−
Value for the external Inputs
Preset1/Preset2 out of measuring
range (optional).
−
Limit switch values out of measuring
range (optional)
−
Installed device master file does not
match to the measuring system
−
internal memory error
−
position error (gear reduction)
Measuring system does not start at the
bus.
−
Check parameter setting and
configuration,
see chapter 6 from page 75
−
The limit values of the preset or limit
switches must be within the programmed
measuring system range in steps - 1
−
Check whether the device master file
associated with the measuring system has
been installed or configured.
−
Switch supply voltage OFF/ON
−
Replace measuring system
off
10 Hz
Blink mode is supported only in case of
older measuring system generations.
Unrecoverable measuring system defect.
At activated "Commissioning diagnostics"
function an additional diagnostic alarm is
triggered via the PROFIBUS:
−
internal memory error
−
position error (gear reduction)
Measuring system is running at the bus.
Switch supply voltage OFF/ON. If the error
persists after this measure, the measuring
system must be replaced.
1 Hz
on
Measuring system has no allocation to a
master, no data exchange
−
Check adjusted station address
−
Check projection and operating status of
the PROFIBUS master
−
Is there a connection to the master?
−
Check whether the device master file
associated with the measuring system has
been installed or configured.
off
1 Hz
Parameterization- or configuration error in
a PNO compatible nominal configuration:
Parameter "number of revolutions" is not
a power of two
-> the data have been corrected
automatically, the measuring system is
running at the bus.
−
Check projection and operating status of
the PROFIBUS master
−
Check the parameter data of the PNO
compatible nominal configuration, see
chapter 6 from page 75
off
on
Measuring system operational,
no error, bus in cycle
−
