Marathon Computer AACC 2000 - Manual (Page 61)

Marathon Monitors Inc.
AACC 2000 Carbon Nov. 1, 1997
61
configuration list. ‘
func’ should be set to ‘Vpos’, ‘VAL.L’ must be set to ‘0’ and
‘
VAL.H’ to ‘100’.
Exit from configuration and you are now ready to calibrate the position feedback
potentiometer. Proceed as follows.
1. In Operator level, press the AUTO/MAN button to put the controller in Manual mode.
2. Drive the valve to its fully open position using .
3. Press until you get to ‘
ip-List’.
4. Press to get to ‘
PCAL-OFF’.
5. Press or to turn ‘
PCAL’ to ‘on’.
6. Press and the upper readout indicates ‘
Pot’.
7. Press or to get to ‘
Pot-3A.Hi’. (Assuming that the Potentiometer Input
Module is in module position 3.)
8. Press to go to ‘
GO-no’.
9. Press or to see ‘
GO-YES’, which starts the calibration procedure.
10. Calibration is complete when the display returns to ‘
GO-no’.
11. Press and together to return directly to the Operator level.
12. The controller should still be in Manual mode.
13. Drive the valve to its fully closed position using .
14. Press until you get to ‘
ip-List’.
15. Press to get to ‘
PCAL-OFF’.
16. Press or to turn ‘
PCAL’ to ‘on’.
17. Press and the upper readout indicates ‘
Pot’.
18. Press or to get to ‘
Pot-3A.Lo’
19. Press to go to ‘
GO-no’.
20. Press or to see ‘
GO-YES’, which starts the calibration procedure.
21. Calibration is complete when the display returns to ‘
GO-no’.
22. Press and together to return directly to the Operator level.
23. Press the AUTO/MAN button to place the controller in AUTO and the calibration of
the position feedback potentiometer is now complete.