Process control options – Rockwell Automation 1771-QDC PLASTIC MOLD.MODULE User Manual

Page 284

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5–2

Module Specifications

Publication 1771-6.5.88 – July 1997

The following table lists process control options.

Phase:

Type of Profile:

Mode:

Injection phase: 10-step profile with
selectable transition

velocity vs. position
or
velocity vs. position pressure limited
or
injection pressure vs. position
or
injection pressure vs. time

open/closed with ERC

open/closed with ERC

open/closed with ERC

open/closed with ERC

Selectable Transition dependent on:

S

Time

S

Ram (screw) pressure

S

Cavity pressure

S

or Ram (screw) position

N/A

N/A

Pack phase: 5-step profile

ram (screw) pressure vs. time
or
cavity pressure vs. time

open/closed with ERC

open/closed with ERC

Hold phase: 5-step profile

ram (screw) pressure vs. time
or
cavity pressure vs. time

open/closed with ERC

open/closed with ERC

Plastication phase: 10-step profile

backpressure vs. position
or
backpressure vs. time
or
screw RPM vs. position
or
screw RPM vs. time

open/closed with ERC

open/closed with ERC

open/closed with ERC

open/closed with ERC

Clamp close phase: three 3-step profiles
(for a total of 9 steps)

velocity vs. position
or
pressure vs. position

open/closed with ERC

open/closed with ERC

Clamp low pressure close with re-try: 2-step profile

pressure vs. position

open/closed with ERC

Clamp open phase: three 3-step profiles
(for a total of 9 steps)

velocity vs. position
or
pressure vs. position

open/closed with ERC

open/closed with ERC

Clamp open slow phase: 2-step profile

velocity vs. position
or
pressure vs. position

open/closed with ERC

open/closed with ERC

Ejector adv. phase: 3-step profile (with tip strokes)

velocity vs. position
or
pressure vs. position

open/closed with ERC

open/closed with ERC

Ejector ret. phase: 3-step profile

velocity vs. position
or
pressure vs. position

open/closed with ERC

open/closed with ERC

Alarms

Process
Programming

N/A

Control Options

P, I, PI, PD, PID, and FF
Expert Response Compensation
Open/Closed Loop

N/A

Process Control Options

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