Rockwell Automation 1771-QDC, D17716.5.87(Passport) CLAMP AND EJECT MODE - Manual (Page 147)

Span Your Clamp and Ejector Valves
Chapter 9
9-11
5. Observe the pressure reported back in SYS28 (Pro-Set 600 address
N41:180).
If this pressure is greater than zero, marginally adjust the selected
Clamp Close valve set-output value in an attempt to obtain zero
pressure feedback. Stop the adjustments when you observe the
smallest pressure attainable. This procedure may be required on a
bi-directional valve with a spool offset.
If this pressure is zero, marginally adjust the selected Clamp Close
valve set-output value until the observed pressure feedback just
becomes greater than zero, and then re-adjust the value until you
just observe zero again. This procedure may be required on a
uni-directional valve with no response at low signal levels.
6. Once you are satisfied you have obtained the lowest possible pressure
(bi-directional valve), or the highest possible signal at zero pressure
(uni-directional valve), copy the pressure observed in SYS28 (usually
0 PSI or Bar) into FCC41, SCC41, and TCC41 (Pro-Set 600
addresses N43:37, N43:97, and N43:157), the Clamp Close Minimum
Pressure Control Limits.
7. While maintaining this minimum pressure, observe the actual valve
set-output value in the System Status Block (SYS41-SYS44, Pro-Set
600 addresses N41:193-N41:196) that corresponds to your selected
Clamp Close pressure valve. Copy this value into FCC43, SCC43,
and TCC43 (Pro-Set 600 addresses N43:39, N43:99, and N43:159),
the Selected Clamp Close Pressure Valve Outputs for Minimum.
8. Begin increasing the selected Clamp Close valve set-output value in
5% increments while observing the clamp pressure in SYS28. Stop
adjusting the value when the observed clamp pressure no longer
increases with an increase in the set-output command value. The
pressure now observed in SYS28 is the maximum obtainable Clamp
Close pressure.
9. Enter this observed maximum Clamp Close pressure (from SYS28)
into FCC42, SCC42, and TCC42 (Pro-Set 600 addresses N43:38,
N43:98, and N43:158), the Maximum Clamp Close Pressure Control
Limits.
10. While maintaining this maximum Clamp Close pressure, observe the
actual valve set-output value in the System Status Block
(SYS41-SYS44, Pro-Set 600 addresses N41:193-N41:196) that
corresponds to your selected Clamp Close pressure valve. Copy this
value into FCC44, SCC44, and TCC44 (Pro-Set 600 addresses
N43:40, N43:100, and N43:160), the Selected Clamp Close Pressure
Valve Outputs for Maximum.
11. Disable set-output by transitioning DYC01-B08 (Pro-Set 600 address
B35/392) from a 1 to a 0.
12. Download your changes to the QDC module (refer to chapter 4 for
detailed instructions).