Rockwell Automation 1771-QDC, D17716.5.93(Passport) PLASTIC MOLDING MODULE - Manual (Page 29)

A B
Tank
Tank
Clamp Ram (Screw)
Ejector
P T
A B
P
A B
P T T
Tank
Tank
Clamp
Flow Valve
Ejector
Flow Valve
Ram (Screw)
Flow Valve
System
Pressure Valve
Pump
P
System
Pressure
Sensor
12468ĆI
Overview of Inject, Clamp, and Eject Mode
Chapter 1
1-17
Example 4Ćvalve System with System Pressure Sensor
With this hydraulic system, a QDC module in the Inject, Clamp, and Eject
mode, has maximum control flexibility. It can control all profiles with:
pressure or velocity
open or closed loop
Figure 1.20
Example 4Ćvalve System for Inject/Clamp/Eject Control
QDC I/O: Designation
Input 1 Ram (screw) Position
Input 2 System Pressure
Input 3 Clamp Position
Input 4 Ejector Position
Output 1 Ram (screw) Flow
Output 2 System Pressure
Output 3 Clamp Flow
Output 4 Ejector Flow