73
Logix
®
520MD+ and 510+ Digital Positioners FCD LGENIM0105-15-AQ – 05/16
flowserve.com
RGRR
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FACTORY RESET STATE
Description: The positioner is in factory reset state. Calibration is
required to enable control.
Possible Solutions: Perform a Stroke Calibration (QUICK-CAL).
RYGG
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VALVE CAN'T OPEN ALARM
VALVE CAN'T SHUT ALARM
Description: Pressure has been applied (or removed) to open or
shut the valve, but the valve is not moving. This may be caused by
excessive friction.
Possible Solutions: Verify adequate supply pressure is applied. Verify
the feedback linkage is connected. View the friction trends if available.
Consider the following: Clear any external or internal mechanical
obstruction, loosen the packing, clean the stem, repair or replace the
actuator, repair the valve if galling is suspected.
RYGY
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COMMAND AMPLITUDE ALARM
COMMAND FREQUENCY ALARM
Description: The amplitude or frequency of the command signal is
above the alarm limit. This could mean the control loop has larger or
faster swings than desirable.
Possible Solutions: Verify the limits are set at an appropriate level. Re-
view the control loop parameters and equipment. Adjust as necessary.
RYGR
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POSITION AMPLITUDE ALARM
POSITION FREQUENCY ALARM
Description: The amplitude or frequency of the position signal is
above the alarm limit. The positioner is controlling the position of the
valve with large or rapid corrections.
Possible Solutions: Verify the limits are set at an appropriate level. Ad-
just the selectable Gain switch to a lower setting or use the Hi Friction
setting. Perform a QUICK-CAL which sets the gains based on valve
response. Check for high friction. If the problem persists replace the
relay.
RYYG
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SUPPLY PRESSURE LOW ALARM
Description: The supply pressure is below the user set warning limit.
Low supply pressure can cause poor valve response or positioner
failure. The minimum recommended supply pressure for proper
operation is 1.3 bar (19 PSI).
Possible Solutions: Regulate the supply pressure at the positioner
above 1.3 bar (19 PSI). Ensure system air/gas supply is adequate.
Repair kinked or restricted supply tubing. Check for pneumatic leaks
in the actuator and actuator tubing. Recalibrate pressure sensors.
Check the pressure sensor board connections and replace pressure
sensor board if necessary.
RYYY
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AUX CARD 2 ERROR
Description: Auxiliary Card 2 has an electrical problem.
AUX CARD 2 FAILURE WARNING
Description: Auxiliary Card 2 is not communicating.
AUX CARD 2 NO LOOP POWER
Description: Auxiliary Card 2 has no loop current.
Possible Solutions: MFC: Check auxiliary loop wiring and ensure ad-
equate compliance voltage and current. Check auxiliary card connec-
tion to the main board. Replace card if condition persists.
RYYR
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AUX CARD 1 ERROR
Description: Auxiliary Card 1 has an electrical problem.
AUX CARD 1 FAILURE WARNING
Description: Auxiliary Card 1 is not communicating.
AUX CARD 1 NO LOOP POWER
Description: Auxiliary Card 1 has no loop current.
Possible Solutions: MFC: Check auxiliary loop wiring and ensure ad-
equate compliance voltage and current. Check auxiliary card connec-
tion to the main board. Replace card if condition persists.
RYRG
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POSITION SENSOR FAILURE ALARM
Description: The feedback arm may be disconnected from the valve
assembly or the sensor has failed.
Possible Solutions: Check the feedback arm linkage. Recalibrate. If the
problem persists return the unit for repair.
