Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 200)

Span Your Valves
Chapter 9
9-34
4. Enable set-output by changing DYC01-B08 (B34/392) from 0 to 1.
This forces the QDC module to apply the values in DYC09-12
directly to its outputs 1-4, respectively.
5. Adjust the value of DYC09-12 (N40:121-124) that corresponds to the
selected pressure valve, and observe actual pressure reported in
SYS26 (N40:178).
For a bi-directional valve with a spool offset:
If this pressure is greater than zero, adjust the set-output value to
the pressure valve to obtain zero pressure. Stop adjusting when
you observe the smallest pressure attainable.
For a uni-directional valve with no response at low signal level:
If this pressure is zero, adjust the set-output value to the pressure
valve until the observed pressure just exceeds zero. Then re-adjust
this value until you just observe zero again.
For a uni-directional valve with a pressure actual greater than
zero but with zero output to the valve: This is lowest pressure.
6. Once satisfied that you obtained the lowest possible pressure or the
highest possible signal at zero pressure, copy the actual pressure
observed in SYS26 into the minimum pressure control limit: PKC41
(N44:157) for pack, HDC41 (N44: 217) for hold.
7. While maintaining this minimum pressure, observe the actual
set-output value SYS41-44 (N40:193-196) that corresponds to your
pressure valve. Copy this value into the selected pressure valve,
output for minimum: PKC43 (N44:159) for pack, HDC43 (N44:219)
for hold.
8. Modify the value in DYC09-12 (N40:121-124) that corresponds to
the pressure valve in 5% steps while observing rising pressure in
SYS26 (N40:178). Stop adjusting it when the observed pressure no
longer increases with a change in the set-output value. Now the
pressure in SYS26 is the maximum obtainable pressure.
9. Copy the pressure in SYS26 (N44:178) into the maximum pressure
control limit: PKC42 (N44:158) for pack, HDC42 (N44:218) for hold
10. While maintaining this maximum pressure, observe the actual
set-output value in SYS41-44 (N40:193-196) that corresponds to your
selected pressure valve. Copy this value into the selected pressure
valve, output for maximum: PKC44 (N44:160) for pack, HDC44
(N44:220) for hold.
11. Disable set-output operation. Toggle DYC01-B08 (B34/392) to 0.