Micropilot FMR60/62/67
Endress+Hauser 11
Use in protective systems
Device behavior during
operation
Device behavior in SIL-locked state
After SIL locking, additional diagnostics are active and critical parameters in the safety path are
set to safe values (→ 15). Therefore, the behavior of the device in the "SIL-locked state"
may deviate from the "non-SIL-locked state". If a test phase takes place before the system is
finally put into production, it is recommended that this test phase be run in the locked state in
order to obtain the most conclusive results possible.
Device behavior during power-up
Once switched on, the device runs through a diagnostic phase of approx. 30 seconds. The current
output is set to error current during this time. For approx. 5 seconds of this diagnostic phase, this
current is ≤3.6 mA. After that, depending on the setting of the "Start-up mode" parameter, the
current is:
• at the MIN value: ≤3.6 mA
• at the MAX value : ≥21.0 mA
During the diagnostic phase, no communication is possible via the service interface (CDI) or via
HART.
Device behavior in safety function demand mode
The device outputs a current value corresponding to the limit value to be monitored. This value must
be monitored and processed further in an attached logic unit.
Device behavior in event of alarms and warnings
The output current on alarm can be set to a value ≤3.6 mA or ≥21.0 mA.
In some cases (e.g. failure of power supply, a cable open circuit and faults in the current output itself,
where the error current ≥21.0 mA cannot be set), output currents ≤3.6 mA irrespective of the
configured fault current can occur.
In some other cases (e.g. short circuit of cabling), output currents of ≥21.0 mA occur irrespective of
the configured error current.
For alarm monitoring, the logic unit must therefore be able to recognize failure currents of the upper
level for signal on alarm (≥21.0 mA) and of the lower level for signal on alarm (≤3.6 mA).
Alarm and warning messages
Additional information is provided by the alarm and warning messages in the form of error codes
and associated clear text messages.
The following table shows the correlation between the error code and the current output:
Error code
1)
Current output (message type) Note
Fxxx ≥21.0 mA or ≤3.6 mA xxx = three-digit number
Mxxx corresponding to measuring mode xxx = three-digit number
Cxxx corresponding to measuring mode xxx = three-digit number
Sxxx corresponding to measuring mode xxx = three-digit number
1) The error codes are listed in the Operating Instructions.
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