Rockwell Automation 1771-QDC, D17716.5.87(Passport) CLAMP AND EJECT MODE - Manual (Page 174)

Chapter
10
10-1
Tune Your Machine
In the previous chapter, rough open loop profiles were run as part of the
valve spanning process. This chapter presents guidelines to assist you in
refining your configuration and profile block values to optimize machine
performance for actual production runs.
In this chapter, we address closed-loop tuning considerations as well as
profile block and configuration block parameters whose set-up and
configuration require specific considerations not mentioned previously in
this manual or in Section 3 of the Plastic Molding Module Reference
Manual (pub. no. 1771-6.5.88). More information on the parameters
discussed in this chapter may be found in chapters 7 through 9 of this
manual and in Sections 1 and 3 of the Plastic Molding Module Reference
Manual.
Important: Make sure you consider the impact of all configuration block
and profile block parameters (not just those addressed in this chapter)
before running parts on your plastic molding machine.
Most molders share common clamp and ejector movement objectives
which are outlined below. Guidelines and recommendations for various
configuration and profile block parameters are presented in this chapter
with these objectives in mind.
Clamp Control Objectives
Most molders share the following objectives when tuning their clamp
operation and setting up parts for various molds. These objectives apply to
both toggle and hydraulic machines.
Repeatable mold full open position. The advent of automated part
removal from mold cavities has made repeatable mold full open
positioning a process necessity.
Precise pressure control during Low Pressure Close. This precise
control is necessary to detect obstructions to full mold closure and to
prevent mold damage. Recent advances in control technology now
allow this function to be performed utilizing closed-loop algorithms so
as not to rely completely on hydraulic components and circuit design.
Chapter Objectives
Chapter Assumptions