Leuze electronic
MSI 420.TMC-03
15
5
Diagnostics messages
Potential errors are indicated in two ways. Errors associated with the connected signals are indicated by
flashing of the LED assigned to the input. The LED stops flashing as soon as the error has been corrected.
In addition, three outputs of the MSI 420.TMC-03 are used for error diagnostics.
Safety on (output IQ2) - The signal output is active whenever the safety outputs of the MSI 420.TMC-03
are carrying a HIGH signal.
Error (output IQ1) - The signal output is active whenever an error is present.
Error indication (output Q4) - The signal output provides information on the specific error.
Table 5.1:
Diagnostics messages
Safety on (IQ2) Error (IQ1)
Error indication (Q4) Status
Measures
Active
Inactive
Inactive
Normal opera
-
tion
None
Inactive
Active
Active 1x every 5
sec
EDM error
Check operation and wear of the
output contactors.
Inactive
Active
Active 2x every 5
sec
Error during
testing of
Start 1
Check that muting sensor 1 and
the PLC output are connected
and operating correctly.
Inactive
Active
Active 3x every 5
sec
Error during
testing of
Start 2
Check that muting sensor 2 and
the PLC output are connected
and operating correctly.
Inactive
Active
Active 4x every 5
sec
Muting error
An error occurred during the
muting process. Check the mut
-
ing sensors. In order to reset a
muting error, all muting sensors
must become LOW again and
the OSSD signal of the ESPE
must be HIGH.
