Fisher FIELDVUEDVC6200f Instruction Manual page 151

Instruction Manual
D103412X012
Table 7‐2. Instrument Troubleshooting
Symptom
14 Instrument will not calibrate, has
sluggish performance or oscillates.
15 Instrument will not calibrate.
16 ValveLink diagnostic tests provide
erroneous results.
17 Cannot perform advanced
diagnostics.
18 A Field Diagnostic alert is active, but
not reported (broadcast) automatically.
19 Field Communicator does not turn
on.
Possible Cause
14a Travel sensor failed.
14b Travel feedback is out of accepted range
14c Cables not plugged into PWB correctly.
14d Configuration errors.
14e Restricted pneumatic passages in I/P converter
14f O‐ring(s) between I/P converter ass'y missing or hard
and flattened losing seal.
14g I/P converter ass'y damaged/corroded/clogged.
14h I/P converter ass'y out of spec.
14i Defective module base seal.
14j Defective relay.
14k Defective 67CFR regulator, supply pressure gauge
jumps around.
15a Configuration errors.
15b Magnet assembly is not correctly installed.
15c Cables not plugged into PWB correctly.
16a Defective pressure sensor(s).
16b Pressure sensor O‐ring(s) missing.
17a Instrument does not have proper diagnostic level.
18a PlantWeb and Field Diagnostic alerts in firmware 1.5
and higher are mode‐based. Transducer block mode may
be in MAN or OOS.
19a Battery pack not charged.
DVC6200f Digital Valve Controller
Maintenance and Troubleshooting
Action
14a Replace the housing (key 1)
14b Check the mounting. Ensure the correcting
mounting kit has been selected and the magnetic array
is properly installed.
14c Inspect connections and correct.
14d Verify configuration. Use Device Setup on page 18.
14e Check screen in I/P converter supply port of the
module base. Replace if necessary. If passages in I/P
converter restricted, replace I/P converter (see
Replacing the I/P Converter on page 142).
14f Replace O‐ring(s) (refer to the I/P Converter section
on page 141).
14g Check for bent flapper, open coil (continuity),
contamination, staining, or dirty air supply. Coil
resistance should be between 1680 ‐ 1860 ohms.
Replace I/P ass'y if damaged, corroded, clogged, or
open coil (see Replacing the I/P Converter on page 142).
14h I/P converter ass'y nozzle may have been adjusted.
Verify drive signal (55 to 80% for double‐acting; 60 to
85% for single‐acting) with the valve off the stops.
Replace I/P converter ass'y if drive signal is continuously
high or low (see Replacing the I/P Converter on page
142).
14i Check module base seal for condition and position.
If necessary, replace seal. Refer to Module Base
Maintenance on page 138.
14j Depress relay beam at adjustment location in
shroud, look for increase in output pressure. Remove
relay, inspect relay seal. Replace relay seal or relay if I/P
converter ass'y good and air passages not blocked
(refer to Replacing the Pneumatic Relay on page 144).
Check relay adjustment (refer to page 121).
14k Replace 67CFR regulator.
15a Verify configuration.
15b Check the mounting. Ensure the correcting
mounting kit has been selected and the magnetic array
is properly installed.
15c Inspect connections and correct.
16a Replace PWB (see Replacing the PWB Assembly on
page 143).
16b Replace O‐ring(s).
17a Upgrade diagnostic level.
18a Check transducer block mode. Change to AUTO if
appropriate.
19a Charge battery pack.
Note: Battery pack can be charged while attached to the
Field communicator or separately. The Field
Communicator is fully operable while the battery pack is
charging. Do not attempt to charge the battery pack in
a hazardous area.
February 2017
151