Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 215)

Span Your Valves
Chapter 9
9-49
If these are not your current values, we suggest that you correct them now
using the download procedure discussed in chapter 4.
Span Your Clamp Open Velocity Valve(s)
Span your clamp open velocity valve(s) for smooth operation at highest
velocity. Do this in the following procedure by finding optimum values
for:
Minimum Velocity Control Limit FOC45, SOC45, TOC45, OSC45
Maximum Velocity Control Limit FOC46, SOC46, TOC46, OSC45
Selected Velocity Valve, Output For Minimum
FOC47, SOC47, TOC47, OSC45
Selected Velocity Valve, Output For Maximum
FOC48, SOC48, TOC48, OSC45
Important: If your machine hydraulics are identical for all clamp open
and open slow profiles, complete the procedure for first clamp open by
finding values for FOC45-48, and copy them into the other clamp open
profile words SOC45-48, TOC45-48, and OSC45-48 when told.
Otherwise, 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 personal injury and/or machine damage.
ATTENTION: Be sure all machine guards and shields are in
place before proceeding to guard against personal injury.
1. Obtain a copy of the flow rate curves provided by your flow valve
manufacturer. Flow rate curves graphically illustrate the flow
through a valve at different voltage or input current levels and at
different pressure drops across the valve’s spool.
2. From these curves, determine the minimum and maximum clamp
open flow available from your flow valve at the pressure you would
normally run during clamp open operation. Record these flows,
along with the input voltage/current associated with them.