Rockwell Automation 1771-QDC, D17716.5.85(Passport) MNL. PLASTIC MOLDING MODULE - Manual (Page 39)

Configure the QDC Module's I/O
Chapter 3
3-8
To finish configuring the QDC module, you actuate the ram (screw) with
the QDC module’s set-output operation that applies percentage values to
your QDC module’s outputs to move the ram (screw) in a controllable
fashion. To do this, you apply %-output signals to all module outputs so
you can move the actuator over its intended range. Sensor spanning values
can then be refined per the actual values monitored by the QDC module.
ATTENTION: Do not rely on pressure valves connected to the
QDC module for pressure relief. Use them only for pressure
control below the setting of the system pressure-relief valve.
ATTENTION: A value of zero in set-output words N40:121 -
N40:124 does not necessarily correspond to zero pressure or
flow. If you configured jumper E11, E12, E15, and/or E16 for
bi-directional valve operation, an output of 0% gives –10vdc,
50% gives 0vdc (see chart). Amplifier electronics or spool-null
offsets may also allow pressure or flow at zero signal input.
Consult your valve and amplifier specifications.
-10
-8
-6
-4
-2
0
2
4
6
8
10
0 10 20 30 40 50 60 70 80 90 100
% Output Requested
Output V
oltage
ATTENTION: As soon as you enable set-output operation, the
QDC module’s outputs drive the connected valves according to
the values you entered into DYC09 - DYC12 (Pro-Set 600
words N40:121 - N40:124). Be sure these values RESULT IN
NO MOVEMENT until you adjust them one-at-a-time with
your programming terminal in the procedures that follow.
Use SetĆOutput Operation
to Move the Ram (Screw)