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

Page 146

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Span Your Clamp and Ejector Valves

Chapter 9

9-10

Identify, all end-of segment position setpoints (CPC11, CPC14, CPC17,

CPC20, CPC23, CPC26, CPC29, CPC32, CPC35, CPC38). These
should remain unchanged from the initial settings

Select start LPC on Zone Overrun (CPC03-B11 = 0)

Identify Start LPC Position Setpoint (CPC61)

If current settings do not match our recommended values from previous
chapters, we suggest you correct these values now using the download
procedure discussed in chapter 4.

Span Your Clamp Close Pressure Valve(s)

Span your Clamp Close Pressure vs. Position Profiles for smooth operation
at the highest desired clamp pressure. Do this by finding the optimum
values for FCC41-44, SCC41-44, and TCC41-44 using the values given
above and the procedure below.

Optimal pressure reference values are determined using set-output.

1.

Jog your clamp to the full close position (mold halves mated)

2.

Align all other machine hydraulics to simulate Clamp Close. For
example, if certain pumps are enabled during Clamp Close high
speed operations and disabled during Low Pressure Close, enable
them at this time. If a certain valve alignment exists during Clamp
Close, line the valves up accordingly at this time.

3.

Enter a value that should produce minimum pressure into the
set-output word (DYC09, DYC10, DYC11, or DYC12)
corresponding to the selected valve for Clamp Close pressure control.
Enter all other unselected valve set-output values to what you would
normally use during Clamp Close (reference FCC09-12, SCC09-12,
and TCC09-12).

ATTENTION: A value of 0 entered in your data table does not
necessarily correspond to zero pressure or flow. For example, a
bi-directional valve would require a set-output value of 50%
(5000) to obtain 0 PSI. Amplifier electronics or valve spools
may also be designed such that 0 volts signal input does not
correspond to no flow or pressure. Please consult your valve
and amplifier specifications for more details.

4.

Enable set-output by transitioning DYC01-B08 (Pro-Set 600 address
B35/392) from a 0 to a 1.

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