IM-P343-35 CTLS Issue 5
38
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TRANSLATION RUN OVER
SP500 Electropneumatic Smart Positioner
9.2.2 CALIB - mounting position calibration
•
Programming notes
To access CALIB press and hold
key for 3 seconds. The display will count down the 3 seconds. You are
now in calibrate mode. The LCD shows in % the magnet position in respect to the sensor board of the
positioner, without any offset or scale up or down.
When the LCD shows 0% the magnet is positioned near the bottom of the positioner’s case.
At 50% the magnet will be in front of the cross impressed on the back of the positioner.
At 100% the magnet will be roughly aligned with the top of the positioner’s case.
Desired setting is 50% with the valve at half stroke. The and keys can be used to manipulate the actuator
inflation. In this way it is possible to check the mounting position and if necessary change it and then check
again to get the positioner well centred.
Press
key advance to RESET/RTAIN/RETRN.
9.2.3 RETRN - RTAIN - RESET
•
Programming notes
Provides the facility to restore previous permanently stored values (RETRN), to retain values stored in the
temporary memory (RTAIN) or to reset all values to factory default settings (RESET). Press and keys
to select RETRN, RTAIN or RESET. To advance proceed as follows:
RETRN: To cancel any temporary changes to programmed values select RETRN and press key to return
to SP500 MENU.
RTAIN: To retain temporary changes to programmed values select RTAIN and press key to return to
SP500 MENU.
RESET: Provides the facility to reset all values to factory default settings and return to SET UP NOW. Press
and hold
key for 3 seconds. The display will count down the 3 seconds.
Commissioning notes
RETRN
If changes have been made to program values they will be held in the temporary memory.
To retain changes in the permanent memory it is necessary to advance to RUN in the
main menu and press and hold key for 3 seconds. The display will count down the 3
seconds. If you do not wish to retain temporary changes select RETRN and press
key to return to SP500 MENU.
RTAIN
If changes have been made to programmed values they will be held in the temporary
memory. If you wish to retain these changes select RTAIN and press key to return
to SP500 MENU.
To retain temporary changes in the permanent memory advance to RUN in the main
menu and press and hold key for 3 seconds. The display will count down the 3 seconds.
RESET
Resetting to default values (refer to Section 9 for default values) should be used if it
is intended to use the positioner on a different control valve. If the SP500 positioner
has been moved on its mounting or is to be fitted on a different control valve it will be
necessary to undertake a new autostroke (AUTOS).
RESET to factory default settings can also be used if it is required to recommission the valve.
To reset to factory default values select RESET and press and hold key for 3 seconds. The display
will count down the 3 seconds.
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