Rockwell Automation 1771-QDC, D17716.5.86(Passport) PLASTIC MOLDING MODULE - Manual (Page 45)

Configure the QDC Module's I/O
Chapter 3
3-7
To finish configuring the QDC module, you actuate the ram (screw) and
clamp with the QDC module’s set-output operation that applies percentage
values to your QDC module’s outputs to move the ram (screw) or clamp 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 have configured jumper E11, E12, E15, and/or E16
for bi-directional valve operation, an output of 0% gives
–10 vdc, 50% gives 0 vdc (see chart). Amplifier electronics or
spool-null offsets may also allow pressure or flow at zero volts
signal input. Consult your valve and amplifier specifications.
% Output Requested
Output V
oltage
-10
-8
-5
-3
0
3
5
8
10
0 10 20 30 40 50 60 70 80 90 100
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 DYC09-12 (N40:121-124). 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) and
Clamp