Emerson Fisher™ FIELDVUE™ DVC7K-H Digital Valve Controller Value

Value

• Hardware Savings — When installed in an integrated

control system, significant hardware and installation cost

savings can be achieved. Valve accessories such as limit

switches and position transmitters can be eliminated due

to the integrated position transmitter and switch option.

Solenoid valves can also be eliminated with the On/Off

application mode capabilities

• Increased Uptime — The self‐diagnostic capability

of the DVC7K provides valve performance and health

evaluation without shutting down the process or pulling

the valve assembly from the line.

• Improved Maintenance Decisions — Digital

communication provides easy access to the condition

of the valve. Sound decisions can be made by analysis

of valve information through any HART communicating

asset management software

Valve Diagnostics

With the DVC7K digital valve controller's enhanced memory,

it is able to provide a comprehensive library of valve

diagnostic alerts, as shown in Figure 3. These diagnostics

and recommended actions are easily accessed with an

Emerson handheld communicator or from the LUI. When

installed as part of a HART communicating system, the

DVC7K delivers prompt notification of current or potential

equipment issues directly to the asset management system

and supports NAMUR NE107 alert categorization.

Alerts assist in identification and notification of the

following situations:

• Stroke open and/or stroke close degradation

• Valve travel deviation identifies stuck valves that don't

make full travel

• Cycle count / Travel Accumulator

• Various instrument mechanical and electrical issues

Leverage an Emerson handheld communicator to view the

instrument Event Log which stores alerts in memory on

board the DVC7K, view graphical data, and quickly identify

the stroke open and stroke close times.