Data Sheet

DVC6200 Digital Valve Controller
D103415X012
Product Bulletin
62.1:DVC6200
September 2013
2
Figure 1. Condition Indicators
ERROR
(RED CONDITION INDICATOR)
WARNING
(YELLOW CONDITION INDICATOR)
E1208
E1209
EVENT LOG PROVIDES POSSIBLE CAUSES AND
RECOMMENDED CORRECTIVE ACTIONS
E1210
Valve Diagnostics
The DVC6200 digital valve controller provides a broad
and deep portfolio of valve diagnostic capabilities.
Whether the 475 Field Communicator is used to check
for valve alerts and operational status, or ValveLink
software is used for comprehensive diagnostic test and
analysis, the tools are easy to use. When installed as part
of a HART communicating system, the DVC6200 delivers
prompt notification of current or potential equipment
issues.
Performance Diagnostics enable condition and
performance monitoring of the entire valve assembly
(not just the digital valve controller) while the valve is
actively controlling the process. When conducting
Performance Diagnostics tests, the valve does NOT move
beyond the normal setpoint changes driven by the
process controller. The DVC6200 uses statistical
algorithms to determine condition and performance
related issues based on live readings from the many
on‐board sensors. Results are then displayed graphically,
with severity indicated by a red/yellow/green indicator
(figure 1). A detailed description of the identified issue as
well as suggestions for recommended actions are
provided.
Examples of identifiable issues are:
n Low air supply or pressure droop
n Incorrect regulator setting
n Dirty air supply
n External air leak (actuator diaphragm or tubing)
n Calibration shift
n Valve stuck
n Piston actuator O‐ring failure
n Excessive valve assembly friction
n Excessive valve assembly deadband
n Elastomer failure in the DVC6200
n Broken actuator spring
Performance Diagnostics also provide access to
full‐stroke dynamic testing of the valve assembly
including; valve signature, dynamic error band, step
response, and stroke check. These tests change the
instrument setpoint at a controlled rate and are
performed while the valve assembly is isolated from the
process.
For additional information on FIELDVUE diagnostics and
ValveLink software refer to Fisher bulletin 62.1:ValveLink
(D102227X012).