Rockwell Automation 1771-QDC, D17716.5.86(Passport) PLASTIC MOLDING MODULE - Manual (Page 167)

Span Your Valves
Chapter 9
9-10
Span Your Clamp Close Pressure Valve(s)
Span your clamp close pressure valve(s) for smooth operation at highest
desired clamp pressure. Do this by finding optimum values for:
Minimum Pressure Control Limit FCC41, SCC41, TCC41
Maximum Pressure Control Limit FCC42, SCC42, TCC42
Selected Pressure Valve, Output For Minimum FCC43, SCC43, TCC43
Selected Pressure Valve, Output For Maximum FCC44, SCC44, TCC44
Important: If your hydraulics are identical for first, second, and third
clamp close, complete the procedure for first clamp close by finding values
for FCC41-44 and enter the same four values for second and third clamp
close. If your hydraulics are different, repeat the procedure as needed.
Important: If PanelView is operational for clamp profiles, use it to:
observe actuals
change and download setpoints
run profiles
Important: We suggest that you read this procedure before starting.
ATTENTION: As with any machine start-up, install a test
mold. Programming errors, configuration errors, or hydraulic
problems could lead to machine damage or injury to personnel.
ATTENTION: Be sure all machine guards and shields are in
place before proceeding.
1. Jog your clamp to the full close position (mold halves mated).
2. Align all other machine hydraulics to simulate clamp close. For
example, enable required pumps and align required valves.
3. Copy initial values from FCC09-12 (N43:5-8) into DYC09-12
(N40:121-124) of your PLC-5 data table with this exception:
Important: Enter a value corresponding to zero pressure into the word
DYC09-12 for the output that drives the selected clamp pressure valve.
ATTENTION: A value of 0 does not always correspond to zero
pressure or flow. For example, a bi-directional valve requires a
set-output value of 50% (5000) to obtain 0 PSI. Valve spools or
amplifier electronics may also allow pressure or flow at 0 volts.