Scaling - stroke

￿Select Scaling - stroke using the UP or DOWN keys and press ENTER to confirm your choice.

￿The pump offers five further choices: Off, Keypad, 4-20mA,0-10Vand Program. Use the UP or DOWN keys to make a selection and press ENTER to confirm your decision.

￿If Off is selected, scaling control is disabled and the pump displays the Analogue setup menu.

￿The other options allow a choice of inputs to control scaling.

￿If Keypad is selected, scaling will be controlled by keypad entry of the scal- ing factor while the pump is running in Auto analogue mode. See 18.2 Auto analogue mode.

￿If 4-20mAor 0-10Vis selected, the pump configures the the hardware and calibration data appropriately. A confirmation screen is displayed briefly and the user is returned to the Analogue setup screen.

￿If Program is selected, the pump offers two choices: mA and V. Use the UP or DOWN keys to make a selection and press ENTER to confirm your decision.

￿The pump displays a screen inviting the user to enter the required speed proportion for low signal input as a value from 0.0 to 1.0. Enter your value using the UP or DOWN keys and confirm by pressing ENTER.

￿A similar screen allows the user to enter the required speed proportion for high signal input as a value from 0.0 to 1.0. Enter the value in the same way.

￿If STOP is pressed at any point in the program setup (before pressing ENTER on the high signal speed proportion screen), the pump will display the previous screen.

￿When high and low values have been entered and confirmed, the pump configures the hardware and basic calibration data. A confirmation screen is displayed briefly, followed by a warning that the analogue signal has not been trimmed. The user is returned to the Analogue setup screen.

See 22.4 Scaling: analogue input 2 in Automatic control wiring.

Trim

Trim displays the Trim menu, described above. See 18.1 Trim.

It is recommended that a trim calibration is always performed to align the pump’s response to the actual process analogue signal.

Exit

Exit returns the user to the first section of the Setup menu, described above. See

18Setup.

Watson-Marlow 520DuN IP66/NEMA 4X User Manual

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Watson & Sons 520DUN user manual Trim, Scaling stroke
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520DUN specifications

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