Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 114)

Load Initial Configuration Values
Chapter 7
7-28
Minimum Velocity Control Limit
(FCC45, SCC45, TCC45, INC45, FOC45, SOC45, TOC45, OSC45, EAC45, ERC45)
The value in this word corresponds to the minimum controllable velocity
during the respective profile. The QDC module uses this word with the
Selected Velocity Valve, Output for Minimum (word 47) below. The QDC
module expects this velocity when setting the selected velocity valve to the
percentage output you enter in word 47.
We recorded zero on corresponding worksheets.
Maximum Velocity Control Limit
(FCC46, SCC46, TCC46, INC46, FOC46, SOC46, TOC46, OSC46, EAC46, ERC46)
The value in this word corresponds to the maximum controllable velocity
during the respective profile. The QDC module uses this word with the
Selected Velocity Valve, Output for Maximum (word 48) below. The QDC
module expects this velocity when setting the selected velocity valve to the
percentage output you enter in word 48.
Record the maximum ram (screw), clamp, and/or ejector speed per your
OEM specifications on corresponding worksheets.
Selected Velocity Valve, Output for Minimum
(FCC47, SCC47, TCC47, INC47, FOC47, SOC47, TOC47, OSC47, EAC47, ERC47)
The QDC module uses this word with the Minimum Velocity Control
Limit (word 45) above. Enter the %-signal output that the QDC module
uses to drive the selected velocity valve for minimum profile velocity. The
QDC expects a velocity equal to word 45 when setting the selected
velocity valve to this percentage output.
The QDC module uses this setpoint to drive the selected velocity valve to
attain zero ram (screw), clamp, or ejector velocity. It should drive the
selected velocity valve to a spool position that prohibits hydraulic flow.
Determine Output for Minimum values as follows:
0 (0%) for uni-directional direct acting valves
5000 (50%) for bi-directional valves
9999 (100%) for uni-directional reverse acting valves
If your selected
velocity valve is:
Then the value in word 47
should be:
And during the profile or stroke,
the QDC module does NOT drive
the valve with a % output:
Direct Acting less than the value in word 48 less than word 47
Reverse Acting greater than the value in word 48 greater than word 47
Set Velocity Control Limits