Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 74)

Jog Your Machine
Chapter 5
5-7
Jog your ram (screw), clamp, and ejector, one at a time, in forward and
reverse directions. Experiment with values you entered in the jog
configuration block (JGC) until you obtain the desired jog operation.
If You Observe This Condition: Then Make This Adjustment:
Rough jerky acceleration or deceleration
(hammering hydraulics)
1) Decrease jog pressure
2) Decrease jog flow
Sluggish acceleration or deceleration 1) Boost jog pressure
You must download the JGC block to the QDC module each time you
change one or more of its values to implement the new value(s). Use the
procedures in chapter 4 to change values in the JGC block and download it
to the QDC module. We repeat the JGC block download data.
To download Set B21/
JGC 1
Although the QDC module may not directly control your machine’s
screw-rotate jog, your hydraulics may require valves connected to this
QDC module’s outputs to go to a certain position to assure proper
screw-rotate jog functions. The jog configuration block lets you set up
these indirect jog values.
If your hydraulics require it, take time now to set your valves connected to
the QDC module to assist with the screw-rotate jog. Otherwise, omit the
rest of this chapter.
Whenever the appropriate screw-rotate jog bit is set in dynamic command
block DYC01, the jog configuration block (JGC) values corresponding to
the respective jog are applied to QDC module outputs.
1. In Worksheet 5-B, enter values which must be applied to the QDC
module to successfully execute the screw-rotate jog.
Important: Jog-specific high pressure alarms are NOT activated during
the screw-rotate jog.
2. Download the jog configuration block (JGC) with download bit
B21/1 using the download procedure outlined in chapter 4.
Jog Your Ram (Screw),
Clamp, and Ejector
Configure ScrewĆrotate Jogs
for Indirect Control