Rockwell Automation 1771-QDC, D17716.5.87(Passport) CLAMP AND EJECT MODE - Manual (Page 125)

Load Initial Profile Values for
Machine Tuning
Chapter 8
8-11
Expert Response and Open/Closed Loop Selections (OPC04)
The following BITs of OPC04 determine if expert response is turned on
and also select whether or not the QDC module uses closed-loop control
during the clamp open operation.
- BITs 15, 14, 13, 12, 11, 10, 09, and 08 are used to select expert
response compensation for the different clamp open profiles. Expert
Response Compensation (ERC) accounts for changes in your
machine, machine hydraulics, raw materials, and other process
variables. Using an exclusive algorithm, ERC adjusts the control
scheme to counterbalance changes to your process, both abrupt upsets
and long term deviations. Refer to Worksheet 8-B or Section 3 of the
Plastic Molding Module Reference Manual (pub. no. 1771-6.5.88)
for the relationship between which bits configure which clamp open
profiles.
0 = Expert response compensation ON
1 = Expert response compensation OFF
At this time, select 1 for bits 15, 14, 13, 12, 11, 10, 09, and 08.
- BITs 07, 06, 05, 04, 03, 02, 01, and 00 are used to select the loop
operation for the different clamp open profiles. In open-loop mode, a
set valve position is used to move the cylinder, and no sensor
feedback is used. When in closed-loop mode, sensor feedback is
used to control the valve regulating your pressure or velocity. Refer
to Worksheet 8-B or Section 3 of the Plastic Molding Module
Reference Manual (pub. no. 1771-6.5.88) for the relationship
between which bits configure which clamp open profiles.
0 = Closed-Loop mode
1 = Open-Loop mode
At this time, select 1 for bits 07, 06, 05, 04, 03, 02, 01, and 00.
Mold Open Position Setpoint (OPC62)
The Mold Open Position Setpoint (OPC62) defines to the QDC module the
clamp position when the clamp is fully open. The QDC module uses this
clamp position as the End-of Open Slow position setpoint. If this position
is reached while the QDC module is executing the Open Slow Profile, the
QDC module immediately terminates the Open Slow Profile and sets its
outputs in OPC33-OPC36.
To determine mold open, we recommend you jog your clamp to its
maximum open position and observe the value in SYS27 (Pro-Set 600
address N41:179). Use this value as an initial OPC62 mold open position.
Refer to Section 3 of the Plastic Molding Module Reference Manual (pub.
no. 1771-6.5.88) for more information.
Determine Word Values
for Worksheet 8ĆB