Rockwell Automation 1771-QDC, D17716.5.87(Passport) CLAMP AND EJECT MODE - Manual (Page 152)

Span Your Clamp and Ejector Valves
Chapter 9
9-16
Test Your Clamp Close Velocity Valve(s) for Linearity
1. Select velocity vs. position control for the entire Clamp Close
operation by resetting (= 0) the following three bits:
CPC03-B00 (Pro-Set 600 address B37/288)
CPC03-B02 (Pro-Set 600 address B37/290)
CPC03-B04 (Pro-Set 600 address B37/292)
2. Select velocity setpoints for Clamp Close that are typical of the
velocities you would run during normal machine operation. Enter
these setpoints into CPC09, CPC12, and CPC15 (Pro-Set 600
addresses N43:245, N43:248, and N43:251).
3. Download changes to the QDC module (refer to chapter 4 for detailed
instructions).
4. Jog your clamp to the full open position.
5. Enable First Clamp Close (DYC02-B00, Pro-Set 600 address
B35/400). The clamp should move from its start position through the
First Clamp Close profile, and then execute Low Pressure Close. If
no motion is observed, check the following:
- Verify that none of your clamp or ejector overtravel alarms are set.
The QDC module inhibits clamp close if SYS07-B00 through
SYS07-B05 are set
- Verify that the ejector is inside the ejector position for clamp close
enable (EPC63)
- Verify that no programming error codes exist in SYS61 and
SYS62
6. Upon completion of Clamp Close, observe the velocity reported back
for 1st clamp close segment 2 (CPS12, Pro-Set 600 address
N43:664). This velocity should be relatively close to the setpoint you
entered in CPC12 (Pro-Set 600 address N43:248). If the observed
velocity is not within 25% of the setpoint:
- Verify you chose the correct values from your flow rate curves
supplied by your flow valve manufacturer
- Verify your calculations