Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 167)

Chapter
9
9-1
Span Your Valves
This chapter describes how to span your valves using set-output operation,
and verify valve linearity by running simple open-loop profiles.
The procedures in this chapter require the values and setpoints that you
recorded on worksheets in chapters 7 and 8.
ATTENTION: Do not attempt this chapter unless you completed
all previous chapters. The results could be unpredictable machine
motion, with possible personal injury and/or equipment damage.
We describe how to span these selected valves:
low pressure close valve
clamp close pressure valve
clamp close velocity valve
injection pressure valve
injection velocity valve
pack/hold pressure valve
plastication pressure valve
clamp open pressure valve
clamp open velocity valve
ejector pressure valve
ejector velocity valve
We also describe how to:
test valve linearity
set profile pressure alarms
You may omit parts of this chapter if either of the following applies:
If you have the manufacturer’s valve spanning data, you may omit the
valve spanning procedure in corresponding sections of this chapter.
You may omit whole sections of this chapter that do not apply to your
machine application (see next table).
Chapter Objectives
Choose Only Applicable
ValveĆSpanning Procedures