772B388G50 Emerson Central control module

772B388G50 Emerson Central control module

Brand：Emerson                                   Model number：772B388G50  

Country of origin: United States          Product weight：  1.42kg

HS code：8517623990

Product Dimensions：

If the system is not properly tuned, the valve could start to go open when the servo output reaches the retreat value. 

If this occurs and ABS|Target-Feedback| > posErrorRetreat, a bit is set in register D to announce the condition. 

The RSR sends the output back to the rail and will not allow the channel to retreat again until seating is exited. 

The user should ensure that the bits in register D generate alarms to notify the operator should this occur.

For VP firmware revisions 0H and later, the shutdown input is redefined to “Priority Demand Input”. 

When the input is activated, the target position is set to a tunable constant. 

For compatibility with previous firmware revisions, the default value of priorityDemand is -5%.

This allows the user to rapidly move the valve to some intermediate position during upset conditions. 

The user has the flexibility to create his own scheme to handle an upset.

While the “priority demand input”, or “Shutdown” input is active, 

the VP is in the local mode and the controller must unconditionally track demand feedback.

Page 25-29, Section 25-10.5. “Open Coil Diagnostic Error”, 

replace “is incorrect” at the end of the second sentence with:has been adjusted to yield that result.

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