Rockwell Automation 1771-QDC, D17716.5.87(Passport) CLAMP AND EJECT MODE - Manual (Page 119)

Load Initial Profile Values for
Machine Tuning
Chapter 8
8-5
Expert Response and Open/Closed Loop Selections (CPC04)
The following BITs of CPC04 determine if expert response is turned on
and also selects whether or not the QDC module uses closed-loop control
during the clamp close operation.
- BITs 15, 13, 12, 11, 10, 09, and 08 are used to select expert response
compensation for the different clamp close 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-A 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 close profiles
0 = Expert response compensation ON
1 = Expert response compensation OFF
At this time, select 1 for bits 15, 13, 12, 11, 10, 09, and 08.
- BITs 07, 05, 04, 03, 02, 01, and 00 are used to select the loop
operation for the different clamp close 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 the Worksheet 8-A 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 close profiles.
0 = Closed-Loop mode
1 = Open-Loop mode
At this time, select 1 for bits 07, 05, 04, 03, 02, 01, and 00.
Mold Safe Position Setpoint (CPC62)
The Mold Safe Position Setpoint (CPC62) defines to the QDC module the
clamp position when the mold halves mate. The QDC module uses this
clamp position as the End-of Low Pressure Close position setpoint. If this
position is reached while the QDC module is executing the Clamp Low
Pressure Close Profile, the QDC module immediately terminates the
Clamp Low Pressure Close Profile and sets its outputs to LPC33 - LPC36.
To determine mold safe, we recommend you jog your clamp closed until
the two mold halves mate and observe the value in SYS27 (Pro-Set 600
address N41:179). Use this value as an initial CPC62 mold safe 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 8ĆA