Delta RMC101 User Manual download pdf (Page 52)

Appendix B: Tuning RMC100 Startup Guide

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• Double-click the Config Word (in the parameter area of the main

screen) for the pressure axis.

• In the Input type field, select the type of feedback of your pressure

transducer.

iii. Set scale and offset

• On the Tools menu, click Scale/Offset Calibration.

• If the axis is pressure control:

Enter the desired Actual Pressure for two different pressure counts

(the counts are the feedback from the transducer). The scale and

offset will be automatically calculated.

• If the axis is force (differential pressure) control:

Enter the following information:

− Maximum gauge reading

− Actuator Type

− Cylinder Dimensions

− Desired Force Units

− Desired Force Direction

This information allows the Actual Pressure in the Status area of

the main screen to display the net force on the cylinder.

• Click Apply or Done when you are finished.

2. Assign the Pressure Axis to a Position Axis

The RMC performs pressure control using two or more inputs from transducers

and one drive output to the hydraulic valve. Any position axis with analog

drive output (not stepper output) can be used to provide the drive output and

position input. To enable pressure control on this position axis, you must

assign a pressure-enabled analog axis to the position axis. In this configuration,

the analog inputs—whether using two transducers monitoring differential force,

or a single transducer monitoring single-ended pressure—are then used together

with the position axis to control both position and pressure.

To assign a pressure axis to a position axis:

a) Double-click the Config Word for the position axis. This will open

the Config Word dialog box.

b) In the Pressure Axis field, click the desired Pressure Axis.

c) Click OK.

c) Issue a Set Parameters (P) command to cause these bits to take effect.

d) If you want the axis assignment to be remembered after the RMC

power is cycled, then issue an Update FLASH (U) command

This needs to be done only once.

3. Set Up the Event Step Table

Setting up and tuning position/pressure control requires issuing multiple

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Delta RMC101 User Manual Page 52