Flowserve Logix 3200MD Installation, Operation And Maintenance Manual page 20

Blink
Description
Code
RGGR INNER LOOP OFFSET TIME OUT ALARM during calibration the
Inner Loop Offset value did not settle. This could result in less
accurate positioning.
RGYG NON-SETTLE TIME OUT ALARM indicates that during calibration,
the position feedback sensor did not settle.
RGYY NO MOTION TIME OUT ALARM indicates that during calibration,
there was no motion of the actuator based on the current stroke
time configuration.
RGRR FACTORY RESET STATE indicates the unit has had a factory reset
and has not yet been calibrated. The unit will not respond to
commands and will remain in the failsafe position until a calibrati-
on is successfully completed.
RYYG SUPPLY PRESSURE LOW ALARM (user set) indicates that the
supply pressure is below the user set alarm limit. Low supply
pressure can cause poor valve response or positioner failure.
The minimum recommended supply pressure is 30 PSI (2.1 bar)
for proper operation. The unit will fail at less than approximately
17 PSI (1.2 bars). Low supply pressure indications can also be
caused by pneumatic leak.
RRGG PILOT RELAY RESPONSE ALARM (user set) 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 assembly with piezo (I-P relay) which is coupled to
the spool valve. Delayed response can be caused by a partially
clogged piezo or debris, oil, corrosion, or ice on the spool, or low
supply pressure.
RRGY FRICTION LOW ALARM (user set) indicates the friction has
passed below the user set limit. The alarm indicates a more
severe condition than the warning.
RRGR FRICTION HIGH ALARM (user set) indicates the valve/actuator
friction has passed the user set limit. The alarm indicates a more
severe condition than the warning. High friction can cause loop
oscillations, poor position control, jerky motion, or valve sticking.
It can be caused by build-up from the process on the stem, trim
or seat, by a failing bearing or guides in the valve and actua-
tor, galling of the trim or stem, excessively tightened packing,
linkages, or other valve/actuator mechanical issues.
RRYG PIEZO VOLTAGE ALARM indicates the portion of the circuit board
that drives the piezo is bad, or piezo valve itself is bad.
RRYR PILOT RELAY POSITION LIMIT ALARM indicates the pilot relay
(spool) appears to be fixed at a limit and is not responding. This
could be due to low supply pressure, a hall sensor that is out
of calibration, a broken piezo, stuck spool, or a wire connection
problem.
RRRY ELECTRONICS ERROR OR ALARM indicates the internal data
was not updated correctly. This may affect the function of the
positioner in various ways or not at all. This can be caused when
intermittent operation occurs when connecting power.
RRRR POSITION DEVIATION ALARM (user set) indicates the difference
between the command and the actual position has been greater
than the user-set limit for longer than a user-set time.
20
User instructions - Digital Positioner 3200MD LGENIM0059-01 10/08
®
Recommendations
Repeat the stroke calibration to get a more accurate ILO value. To
proceed using the less accurate ILO value, this error may be cleared by
briefly pushing the quick-cal button. Lowering the gain setting may help
if the actuator is unstable during the calibration. Gain settings can be
physically adjusted on the device. A lower letter represents lower gain.
Check for loose linkages or a loose positioner sensor. This error may be
cleared by briefly pushing the quick-cal button, which will force the po-
sitioner to use the parameters from the last good calibration. This error
may appear on some very small actuators during the initial calibration.
Recalibrating may clear the problem.
Check linkages and air supply to make sure the system is properly con-
nected. If the time out occurred because the actuator is very large then
simply retry the Quick cal and the positioner will automatically adjust for
a larger actuator by doubling the time allowed for movement. This error
may be cleared by briefly pushing the quick-cal button, which will force
the positioner to use the parameters from the last good calibration.
Calibrate. Proper Valvesight operation will require stroke, actuator, and
friction calibration to be completed. This indicator can be disabled.
Regulate the supply pressure at the positioner above 30 PSI (2.1
bar). Recalibrate pressure sensors. Ensure system air/gas supply is
adequate. Repair kinked supply tubing. Check the pressure sensor board
connections and replace pressure sensor board if necessary. Check for
pneumatic leaks in the actuator and actuator tubing. See DTM screen:
Health Status/Actuator Health.
Check response of the valve. If OK, adjust Pilot Relay Response limits.
Check the supply pressure. Check the spool for debris, oil, corrosion,
ice on the spool. Clean or replace the spool assembly. Replace the piezo
or driver module assembly. Maintain a clean, water-free air/gas supply.
See DTM screen: Health Status/Positioner Health. This indicator can be
disabled.
Check for a packing leak. Tighten or replace the valve packing. See DTM
screen: Health Status/Valve Health. This indicator can be disabled.
Determine if the friction is significantly interfering with the valve control.
If not, consider increasing the friction warning limit. Consider the
following to reduce friction: Stroke the valve to clear off build-up. Clear
any external mechanical obstruction, loosen the packing, clean the stem,
repair or replace the actuator. Highly localized friction or very jerky travel
can indicate internal galling. Repair or replace internal valve componen-
ts. See DTM screen: Health Status/Valve Health This indicator can be
disabled.
If the unit is functioning and controlling replace the piezo, if it does not
operate replace the main circuit board. This indicator can be disabled.
Check for adequate supply pressure. A hall sensor problem 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.
Error may self clear with time. If error persists, cycle power and com-
plete a Quick-Cal. If the error still persists, Check internal wiring and
connectors for electrical shorts or opens. If no problems are found and
alarm persists, replace the main circuit board.
Review active alarms and warnings to find root causes of this alarm. See
DTM screen: Alerts/Command Deviation. This indicator can be disabled.