Flowserve 420 IOM - Manual (Page 34)

User Instructions - Logix® 420 Series Digital Positioners FCD LGENIM0106-06 12/13
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34
GRGY
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STROKE CALIBRATION IN PROGRESS
SETTING INNER LOOP OFFSET
COMMAND INPUT CALIBRATION IN PROGRESS
Description: A calibration sequence is in progress. The inner
loop offset is an important step of the stroke calibration.
Possible Solutions: The calibration can be canceled from the
corresponding calibration page of the DTM, from the
handheld, or by briefly pressing the BACK button.
GRRY
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JOG COMMAND MODE
Description: The positioner has been placed in a local
override mode where the valve can only be stroked using the
UP and DOWN buttons. The positioner will not respond to
analog or digital input commands from HART.
Possible Solutions: Control the valve using the UP and
DOWN buttons. This mode may be cancelled by briefly
pushing the QUICK-CAL/ACCEPT button.
GRRR
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JOG CALIBRATION SET 100% POSITION
Description: During a jog calibration, the unit is waiting for the
user to manually adjust the valve position to the desired
100% open position.
Possible Solutions: Use the Up and Down buttons on the
positioner to adjust the valve to the desired fully open
position. The QUICK-CAL/ACCEPT button to accept.
YGGG
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POSITION HIGH LIMIT ALERT
POSITION LOW LIMIT ALERT
Description: The position has reached or is exceeding a user
defined position limit. This is similar to a limit switch
indicator.
Possible Solutions: Set the limit to a higher (or lower) value if
more travel is needed, or adjust the command signal back in
the specified range.
YGGY
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PILOT RELAY CYCLES WARNING
PILOT RELAY TRAVEL WARNING
VALVE CYCLES WARNING
VALVE TRAVEL WARNING
Description: The cycle or travel limit of the valve, actuator,
bellows or pilot relay has been exceeded. Each cycle
represents two reversals of the direction of valve movement.
The cycle counting criterion and count limit (for the valve,
actuator and bellows) are set by the user to track the usage
of the valve assembly.
Possible
Solutions: Follow routine procedures for
maintenance when the limit is reached. For example valve
inspection may include checking the packing tightness, and
checking linkages for wear, misalignment, and tightness.
Bellows inspection may include checking bellows for cracking
or leaking. Actuator inspection may include checking the
actuator seals and lubrication. Relay inspection may include
checking for high air consumption and signs of wear on the
spool. After maintenance, reset the travel accumulator.
YGRR
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PARTIAL STROKE TEST FAILED WARNING
Description: Measured times or forces during the last partial
stroke test did not pass the criteria set by the user. This may
be an indication of corrosion build-up on the valve stem or in
the actuator, low or restricted supply pressure, or a sticking
positioner relay.
Possible Solutions: This warning will clear upon completion
of a successful partial stroke test.
YYGG
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TEMPERATURE HIGH WARNING
TEMPERATURE LOW WARNING
Description: The temperature of the internal electronics has
exceeded the manufacturer set limits of -40°C (-40°F) to
85°C (176°F). Low temperature may inhibit responsiveness
and accuracy. High temperature may affect performance or
limit the life of the positioner.
Possible Solutions: Regulate the temperature of the
positioner by shading or cooling supply gas. Heat the
positioner if needed. If the temperature reading is in error,
replace the main board.