Delta RMC101 User Manual download pdf (Page 67)

RMC100 Startup Appendix C: An Example

deltamotion.com

• Now that the system is tuned, it is important to enable any Auto Stops that

were set to Status Only. Double-click the Axis 0 Auto Stop field. The

following window appears:

• On most systems, it is preferable to have any axis errors cause a Soft or

Hard Stop for safety. Additionally, Soft Stops are often desirable because

they slowly stop the axis. A Hard Stop immediately puts the drive output

to 0 volts, which in some cases can cause a sudden (and potentially

dangerous) jerk in the system. Carefully consider your system

requirements before determining how to set the Auto Stop bits. In this

case, it was decided to set all the Auto Stops are set to Soft Stop. This is

done by clicking the Soft Stop button for each Status Bit. Clicking OK

exits the window and issuing a P command initializes the axis with these

parameters.

• TheIn Position, At Pressure, and Following Error parameters should also

be set properly.

− The In Position parameter specifies the size of the window in which

the axis is considered to be in position. Once the axis is in this

window, the In Position bit is turned on. This is useful for

determining whether the axis has reached the commanded position. In

this example, the axis is considered to be in position when it is within

0.050 inches, so the In Position parameter is set to 50.

− The At Pressure parameter is similar to the In Position parameter, but

is for the differential pressure axis. In this example, it is set to 50,

which is 50 lbs.

− The Following Error parameter determines how large the difference

between the Target Position and Actual Position can get before the

Following Error bit is set in the Status word. Normally, this parameter

is set to greater than the worst-case following error to avoid

unnecessarily causing an error. In this example, the Following Error

parameter is set to 250 (0.25 in.).

1 2 ... 62 63 64 65 66 67 68

No comments

Delta RMC101 User Manual Page 67