Siemens 7ML5670 - Menu Position 4: Diagnostics

Operation
SITRANS LC300
28 Operating Instructions, 05/2021, A5E47904073-AA
a)
System errors that would trigger a fault are a checksum error, an absence of measurement
signal, or a primary variable beyond 1.66 pF (low) or 3300 pF (high).
6.10
6.11 Menu position 4
Display
• LCD shows diagnostic information. A correctly operating device shows 0.00 on
the LCD. See chart below for explanation of system fault values.
Up button
• LCD shows revision information. Please note this information when calling Sie-
mens Milltronics representatives for assistance.
Both buttons
• Holding both buttons for more than 1 second will try to reset the error status.
The LCD reads 0.00 when the status has been successfully reset. Monitor the
LC300 more closely after a diagnostic error has occurred.
Fault values
128
The device is in calibration mode. The measurement values and the loop-current set-
ting may no longer be trusted.
64
A checksum error has occurred in the program and/or data memory. The measurement
values and the loop-current setting may no longer be trusted.
32
LC300 system watchdog has been activated. This fault can be combined with fault 64,
resulting in fault 96. The measurement values and the loop-current setting may no
longer be trusted.
8
An arithmetic error has occurred, perhaps caused by an incorrect value setting. This
event type error will rarely affect the operation of the LC300.
4
An error occurred while trying to store settings in the local nonvolatile memory. The
LC300 may not operate correctly.
2 The primary variable has exceeded the device limits (1.66 pF and 3300 pF). Check that
the probe is correctly connected to the measurement module.
1 The measurement circuit no longer emits signal. Check the wiring to/from the meas-
urement module or barrier circuit.
Not
e
It is possible for more than one fault to occur at the same time. The display will read the
combined result of both fault values. For example: If fault value 1 and fault value 2 occur
together, the display will read fault value 3. If the display reads fa
ult value 10, it means fault
value 8 and fault value 2 have occurred together.