Fisher® FIELDVUE DVC6200 Digital Valve Controller
Fisher® FIELDVUE DVC6200 Digital Valve Controller
Fisher® FIELDVUE DVC6200 Digital Valve Controller
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Glossary<br />
July 2012<br />
Instruction Manual<br />
D103605X012<br />
Cycle Counter Alert<br />
Checks the difference between the Cycle Counter<br />
and the Cycle Counter Alert Point. Cycle Counter<br />
Alert is active when the cycle counter value<br />
exceeds the Cycle Counter Alert Point. It clears<br />
after you reset the Cycle Counter to a value less<br />
than the alert point.<br />
Cycle Counter Alert Point<br />
An adjustable value which, when exceeded,<br />
activates the Cycle Counter Alert. Valid entries<br />
are 0 to 4 billion cycles.<br />
Cycle Counter Deadband<br />
Region around the travel reference point, in<br />
percent of ranged travel, established at the last<br />
increment of the Cycle Counter. The deadband<br />
must be exceeded before a change in travel can<br />
be counted as a cycle. Valid entries are 0% to<br />
100%. Typical value is between 2% and 5%.<br />
Deviation<br />
Usually, the difference between set point and<br />
process variable. More generally, any departure<br />
from a desired or expected value or pattern.<br />
Device ID<br />
Unique identifier embedded in the instrument at<br />
the factory.<br />
Device Revision<br />
Revision number of the interface software that<br />
permits communication between the Field<br />
Communicator and the instrument.<br />
Drive Signal<br />
The signal to the I/P converter from the printed<br />
wiring board. It is the percentage of the total<br />
microprocessor effort needed to drive the valve<br />
fully open.<br />
Drive Signal Alert<br />
Checks the drive signal and calibrated travel. If<br />
one of the following conditions exists for more<br />
than 20 seconds, the Drive Signal Alert is active. If<br />
none of the conditions exist, the alert is cleared.<br />
If Zero Power Condition = Closed<br />
The alert is active when:<br />
drive signal 3%<br />
drive signal >90% and calibrated travel