Rockwell Automation 1771-QDC, D17716.5.87(Passport) CLAMP AND EJECT MODE - Manual (Page 132)

Load Initial Profile Values for
Machine Tuning
Chapter 8
8-18
- BIT 09 controls the QDC modules ability to perform any profiled
ejector movement.
0 = QDC module executes profiled ejector action as required
(Ejectors enabled or ON)
1 = QDC module does not execute any profiled ejector action
(Ejectors disabled or OFF)
At this time, select 0 for bit 09.
- BIT 08 controls when the QDC module initiates Ejector Profiles.
0 = QDC module starts the Ejector Profile based upon clamp
position during the Clamp Open Profiles
1 = QDC module starts the Ejector Profile on command from the
PLC processor
At this time, select 1 for bit 08.
- BIT 00 selects which algorithm is utilized by the QDC module for
the Ejector Profile.
0 = Velocity vs. Position algorithm
1 = Pressure vs. Position algorithm
At this time, select 1 for bit 00.
Expert Response and Open/Closed Loop Selections (EPC04)
The following BITs of EPC04 determine if expert response is turned on
and also select whether or not the QDC module uses closed-loop control
during the ejector operation.
- BITs 09 and 08 are used to select expert response compensation for
the different ejector 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. Bit 09
configures the Pressure vs. Position Ejector Profile and bit 08
configures the Velocity vs. Position Ejector Profile.
0 = Expert response compensation ON
1 = Expert response compensation OFF
At this time, select 1 for bits 09 and 08.
- BITs 01 and 00 are used to select the loop operation for the different
ejector profiles. In open-loop mode a set valve 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. Bit 09 selects the loop operation for the Pressure vs.
Position Ejector Profile, and bit 08 selects the loop operation for the
Velocity vs. Position Ejector Profile.
0 = Closed-Loop mode
1 = Open-Loop mode
At this time, select 1 for bits 01 and 00.