Flowserve ValveSight Diagnostics - Manual (Page 56)

ValveSight Diagnostics for HART User Manual FCD VSENSF0001-02-AQ 03/15
56
# Indicator Implications
Possible
Solutions
Default
Settings
Enable/
Disable
Refer to
DTM
Screen
Blink
Code
46
Pressure
Port 2
Range
Small
Warning
Indicates that during a pressure sensor cali-
bration, the range of applied pressures to Port
2 was too small for optimum performance.
Adjust the supply pressure to a
higher value so the positioner
can properly span the sensors,
then recalibrate. Briefly push
the QUICK-CAL button to
acknowledge this condition
and the positioner will operate
using the current short stroke
calibration values, if valid.
N/A No
Calibration
> Actuator/
Stroke/Fric-
tion
YYGY
47
Pneumatic
Leak
Warning
Indicates that the positioner has detected a
leak in the actuation assembly. Leakage from
the actuator can cause decreased responsive-
ness and excessive air/gas consumption. Low
supply pressure can also trigger this warning.
Repair pneumatic leaks at the
tubing junctions and actuator
seals. Ensure proper supply
pressure.
Start:
0.3 scfm
End:
0.7 scfm
Yes
Health >
Actuator
Health
YRGR
48
Pilot Relay
Response
Warning
Indicates that the pilot relay is sticking or
slow to respond. This affects the responsive-
ness, increases the chance of limit cycling
and excessive air consumption. The pilot relay
is part of the inner loop and consists of the
driver module assembly with piezo (I-P relay)
which is coupled to the pilot valve. The value
of this indicator corresponds with inner loop
lag. Delayed response can be caused by a par-
tially clogged piezo or debris, oil, corrosion,
ice, or low supply pressure.
Check response of the valve. If
it’s OK, adjust the Pilot Relay
Response limits. Check the
spool for debris, oil, corrosion,
and ice on the spool. Clean or
replace the spool assembly.
Replace the piezo or drive
module assembly. Maintain a
clean, water-free air/gas supply.
300 ms Yes
Health >
Positioner
Health
YRGG
49
Pilot Relay
Response
Alarm
Indicates that the pilot relay is sticking or
extremely slow to respond. This affects the
responsiveness, increases the chance of limit
cycling and excessive air consumption. The
pilot relay consists of the driver module as-
sembly with piezo (I-P relay) which is coupled
to the pilot valve. Delayed response can be
caused by a partially clogged piezo or debris,
oil, corrosion, ice, or low supply pressure.
Check response of the valve. If
it’s OK, adjust the Pilot Relay
Response limits. Check the
supply pressure. Check the
spool for debris, oil, corrosion,
and ice on the spool. Clean or
replace the spool assembly.
Maintain a clean, water-free air/
gas supply.
700 ms Yes
Health >
Positioner
Health
RRGG
50
Pilot Relay
Cycles Limit
Alert
Indicates the pilot relay cycle limit set by the
user has been exceeded. The pilot relay cycles
indicate the activity level of the pilot relay as it
maintains a valve’s position. Excessive cycles
can contribute to a worn pilot relay which can
lead to high air consumption.
Inspect for high air consump-
tion and signs of wear.
Start:
45,000,000
End:
50,000,000
Deadband:
.5%
Yes
Health >
Positioner
Health
GRGG
51
Pilot Relay
Travel Limit
Alert
Indicates the total accumulated pilot relay
travel (% of full pilot relay span) set by the
user has been exceeded. The pilot relay travel
indicates the activity level of the pilot relay
as it maintains a valve’s position. Excessive
travel can contribute to a worn pilot relay
which can lead to a high air consumption.
Inspect for high air consump-
tion and signs of wear.
Start:
360,000,000
End:
400,000,000
Deadband:
.5%
Yes
Health >
Positioner
Health
GRGG
52
Hall Sensor
Upper
Position
Alarm
Indicates the pilot relay (spool or poppet)
appears to be unable to move in the upper
(pressurized) direction and is not responding.
This could be due to low supply pressure, a
hall sensor that is out of calibration, a broken
piezo, stuck relay, or a wire connection
problem.
Check for adequate supply
pressure. A hall sensor prob-
lem may be cleared by briefly
pushing the QUICK-CAL button,
which will force the positioner
to use the parameters from
the last valid calibration. Check
the internal wiring harnesses
for good connections. Check
the spool valve for sticking
problems. If the positioner still
does not operate, replace the
piezo, driver module assembly,
and/or spool assembly.
N/A Yes N/A RRYR