PROGRAMMING AND CONTROL OF A CLAMP
AND WORK SYSTEM USING AUTOMATION STUDIO AND
ALLEN-BRADELY PLC SIMULATOR

PURPOSE:  The purpose of this laboratory exercise is to develop a simulated fluid power circuit and control method for a hydraulic press.  Double solenoids will be used for each actuator.  The required system operation is described below.

OBJECTIVE:  After completing this laboratory exercise, you should be able to do the following:

        1.  Develop a hydraulic circuit for the required system in Automation Studio;
        2.  Develop the required variables, tags and links for controlling the system;
        3.   Simulate the circuit in Automation Studio and document the step-by-step operation;
        4.   Write an Allen-Bradley Simulated PLC program to control the system as required
        5.   Simulate the circuit in Automation Studio and document the step-by-step operation;
        6.   Write a detailed operational procedure for the system.

REQUIRED CIRCUIT  OPERATION:

        Two hydraulic cylinders are used in a work station.  A horizontal cylinder is required to clamp and hold the part
        during the work cycle.  A second (vertical) cylinder is used to press a bushing into the housing of a pump.  An adhesive
        is applied to the bushing prior to the press mode, and 3 seconds set time is required under pressure. The sequence
        of events are as follows:

             1.  Wait for start signal; Upon start continue
             2.  Detect Part in place
             3.  Check for retraction of both cylinders
             4.  Extend clamp cylinder
             5.  Extend press cylinder and delay for 3 seconds
             6.  Retract press cylinder
             7.  Retract clamp cylinder
             8.  Send end of cycle (finish) output signal
             9.  Count the total number of cycles.

PROCEDURE:

        1.  Develop a control matrix for the system shown below;
        2.  Create the following fluid circuit in Automation Studio;
        3.  Draw the PLC control circuit AB PLC simulator and create appropriate tags;
        4.  Simulate the circuit to verify the operation of the clamp and work sequence;
        5.  Simulate the circuit in Step-By-Step mode and note the change of states of electrical components;
        6.  Write a heading for each rung, indicating the control function of each;
        7.  Label each electrical component in the ladder diagram;
        8.  Describe the function within each rung;
        9.  Write a detailed operational sequence for the system.  Provide a detailed, step by step description
              of the electrical control circuit, rung by rung.
        10. Submit a formal written report.