SMAR FY301, Инструкция по эксплуатации и техническому обслуживанию

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FY301 - Operation, Maintenance and Instructions Manual
4.4
Setup - Auto Positioning
After configuring the valve type by means of parameter TYPE, the AUTO SETUP parameter shall be
actuated. During the adjustment procedure the positioner will be in a state of auto positioning and the
message "SETUP” will be flashing on the display. During this process the control parameters are
determined and the 0% and 100% trim is performed. This operation lasts approximately 4 minutes.
While configuring the valve type as described above, the user shall browse up to parameter SETUP
(tool in orifice Z) and place the tool in orifice S in order to initiate the previous auto positioning of the
valve.
Air to Close / Air to Open (AIR_T)
This option configures the air pressure effect on the positioner.
If the positioner operates in “direct action”:
• It should be configured for AIR_OPEN, if the air is to open the valve
• It should be configured for AIR_CLOSED, if the air is to close the valve
In case the positioner is operating in “reverse action”:
• It should be configured for AIR_OPEN, if the air is to close the valve
• It should be configured for AIR_CLOSED, if the air is to open the valve
Procedure for Valve Calibration
STEP 1
Select valve type by means of the menu TYPE, browsing at least once through the options (Lind, Linr,
Rotd, and Rotr).
STEP 2
Setup
In order to start self-calibration, browse up to the parameter SETUP and insert the tool in S.
NOTE
In most cases, steps 1 and 2 are sufficient to provide a good calibration.
STEP 3
Set the KP so as to lower the value overshoot (the overshoot will require adjustment after the TIME as
adjusted). The lower the KP is, the lower the overshoot will be, but valve positioning will be slower. Set
TR in a value where the position does not oscillate and control is capable of quickly reaching the final
position.
STEP 4
Time Adjustment (TIME)
Perform TIME adjustment for quick valves in order to increase the time and decrease the overshoot.
STEP 5
Zero Adjustment by means of LOPOS (Lower Position)
At this moment, current shall be in the position which corresponds to 0% as, for example, 4 mA. A more
practical way of performing this adjustment is to place the tool in orifice S, thus allowing the parameter
to be continually actuated (increased or decreased). Upon noticing the valve action around the desired
point, remove the tool from orifice S and slowly change its value on an increment by increment basis,
that is, by repeatedly placing and removing the tool in orifice S until reaching the desired point. At a
certain point, it is more convenient to perform the adjustment on an increment by increment basis so as
to avoid the risk of exceeding beyond the desired value.
STEP 6
Span Adjustment by means of UPPOS (Upper Position)
At this moment, current shall be in the position which corresponds to 100% as, for example, 20 mA.
The procedure is similar to the one described for zero adjustment.
STEP 7
Air to Close / Air to Open (AIR_T)
This option configures the air pressure effect on the positioner.
If the positioner operates in “direct action”:
• It should be configured for AIR_OPEN, if the air is to open the valve.
• It should be configured for AIR_CLOSED, if the air is to close the valve.
In case the positioner is operating in “reverse action”:
• It should be configured for AIR_OPEN, if the air is to close the valve.
• It should be configured for AIR_CLOSED, if the air is to open the valve.