Fcu Alarm Current; Max - Endress+Hauser Ceraphant PTP31B Operating Instructions Manual

Description of device parameters

FCU Alarm current

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Description
Selection
Factory setting
OFF Switch off current output
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Description
Prerequisite
58
EF → FCU
The device displays warnings and faults. This is done on the local display via the diagnostic
message stored in the device. The purpose of all device diagnostics is solely to provide
information to the user; they do not have a safety function. The errors diagnosed by the
Ceraphant are shown on the display in accordance with NE107. In accordance with the
diagnostic message, the device behaves as per a warning or fault condition:
Warning (S971, S140, C485, C431, C432):
With this type of error, the device continues to measure. The output signal does not adopt
its fault state (value in the event of an error). The local display alternates (0.5 Hz) between
the main measured value and the state in the form of the letter plus a defined number.
The switch outputs remain in the state defined by the switch points. The status LED
flashes red in addition to the display output.
Fault (F437, S803, F270, S510, C469, F804):
With this type of error, the device does not continue to measure. The output signal adopts
its fault state (value in the event of an error). The fault state is shown on the local display
in the form of the letter plus a defined number. In the case of devices with 2 outputs, the
display alternates (0.5 Hz) between the error display and the channel assignment (OuX).
The switch outputs assume the defined state (open). For the analog output option, an
error is also signaled and transmitted via the 4 to 20mA signal. In NE43, NAMUR defines
a current ≤3.6 mA and ≥21 mA as a device failure. A corresponding diagnostic message is
displayed. Current levels available for selection:
The selected alarm current is used for all errors. Diagnostic messages are displayed only on
the primary value page (topmost display level) with digits and a letter and not in the
operating menu – only the display color and LED provide an indication here. It is not
possible to acknowledge all the diagnostic messages. The relevant message disappears if
the event is no longer pending.
The messages are displayed in order of priority:
• Highest priority = first message displayed
• Lowest priority = last message displayed
• MIN: Lower alarm current (≤3.6 mA
• MAX: Upper alarm current (≥21 mA)
• HLD (HOLD): Last measured current value is held. When the device starts, the current
output is set to "Lower alarm current" (≤3.6 mA.

MAX

If error S803 has occurred, the error always outputs a MIN error current ≤3.6 mA
irrespective of the configuration.
EF → I → OFF
Switches off the current output.
Is only displayed if the current output is switched on.
Ceraphant PTP31B, PTP33B
Endress+Hauser