Device Alerts
The DVC6200p digital valve controller provides a
comprehensive library of device alerts and fully
supports NAMUR NE 107. Using Emerson’s Human
Centered Design concept of the Device Dashboard
graphical user interface, device alerts are easily
accessed via a PROFIBUS configuration tool such as
Siemens PDM. When installed as part of a PROFIBUS
communicating system, the DVC6200p delivers
prompt notification of current issues directly on
the Overview Page and Alerts Summary Page (see
figure 2 and 3).
Alerts assist in identification and notifications, along
with recommended actions to resolve situations such
as the following:
• Valve travel deviation due to excessive valve friction
or galling
• High cycle due to dither or improper tuning
Figure 3. Alerts Summary
ACTIVE ALERT INDICATED BY CHECKBOX
• Total travel movement has accumulated beyond a
specified point resulting in packing wear
• Travel sensor failure
• Valve travel is above or below a specified point
• Various instrument mechanical and electrical issues
Value
• Hardware and Installation Savings— Significant
savings can be achieved in reduced wiring,
installation, and hardware requirements compared
to traditional integrated control systems. By
utilizing function blocks such as Discrete Input and
Analog Input blocks, the need for limit switches and
position transmitters can be eliminated, providing
additional savings in hardware and installation costs.
• Improved Maintenance Decisions— Digital
communication provides easy access to the
condition of the valve. Sound process and asset
management decisions can be made by analysis of
valve information through device alerts that provide
details of the operational state of the final control
element (see figure 1).
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