Rockwell Automation 1771-QDC, D17716.5.87(Passport) CLAMP AND EJECT MODE - Manual (Page 42)

Configure the QDC Module's
Inputs and Outputs
Chapter 3
3-9
To finish configuring the QDC module, you actuate the clamp and ejector
with the QDC module’s set-output operation. Set-output applies
percentage output values to your valves to move your clamp or ejector
cylinder in a controllable fashion. You apply a percentage output signal to
each module output so you can move each 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 N41:121 -
N41:124 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
–10vdc, 50% gives 0vdc (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 for
more details.
% 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
Use the SetĆoutput
Operation to Move the
Clamp and Ejector