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49
80-1403-01, Rev. 3
Demand and Temperature Measurement Messages
Message
Process applied to the non-primary
variable is outside the operating limits of
the field device.
The Demand Signal is outside of the
intended limits (see Demand Setup menu).
Demand out of accurate measurement
range.
Demand Signal is out of limit.
Demand sensing error.
The temperature is outside of -40°F to
185°F.
Temperature out of accurate
measurement range.
Temperature A/D Fail.
The Feedback Signal is enabled but the
loop is open.
Description
This is a standard HART‑defined message that appears whenever
the Demand signal, Torque, or Temperature are outside their design
or calibrated ranges. This message should be accompanied by a
Beck‑specific message with more detail.
This Beck‑specific message indicates the Demand signal is
invalid. Refer to LOSS OF DEMAND SIGNAL (L.O.S.) (page 25).
This is a Beck‑specific message. The Demand signal is out of the
reliable measurement range. The lower and upper limits are 0.1
V dc and 5.5 V dc, respectively. Note that current input DCM-3
boards utilize a 250 Ohm input resistor to convert the current
signal to voltage.
This Beck‑specific message indicates the Demand signal is too
high to measure accurately. The upper limits is 5.5 V dc. Note
that current input DCM-3 boards utilize a 250 Ohm input resistor
to convert the current signal to voltage.
This is a Beck‑specific message. The Demand sensing circuitry
does not appear to be functioning properly.
This is a Beck‑specific message indicating that the temperature
at the DCM-3 is outside of the acceptable range. Refer to
TEMPERATURE SENSING (page 22).
This is a Beck‑specific message. The DCM‑3 ambient temperature
reading is extreme to the point of uncertainty.
This is a Beck‑specific message. The DCM‑3 circuitry for
measuring the ambient temperature does not appear to be
functioning properly.
This is a Beck‑specific message indicating that the Feedback
sourcing circuit is unable to create the proper signal current.
Refer to CONFIGURING FEEDBACK (page 31).
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