Test This test allows you to establish whether your basic knowledge of pneumatic controls is sufficient for you to attend the advanced course P or whether you should attend the basic level course P. The test is designed to be completed quickly answers are multiple choice and do not require writing of words or sentences. You will find the correct answers in the Solutions sheet document.. Selecting a cylinder You have to select a pneumatic cylinder for installation in a machine. It must be able to exert a force of 00 N (approx. 0 kg) during its forward stroke. The return stroke is initiated by external force from the machine. What type of cylinder would you use? A. Single-acting cylinder B. Double-acting cylinder. Setting the advancing speed The piston rod of the cylinder shown extends too quickly (motion to the right). You have to reduce the advancing speed. At which of the two one-way flow control valves would it be preferable to change the setting? A. One-way flow control valve B. One-way flow control valve 3. Selecting a valve A double-acting cylinder operates in a pneumatic system. The piston moves only to the forward or retracted end position (mechanical stop). Intermediate positions are not required. Which final control element (valve) should be used in this case? A. /-way valve B. 3/- way valve C. 5/- way valve D. 4/- way valve E. 4/3- way valve 4. Workpiece-clamping cylinder You have to select a cylinder / final control element combination for a workpiece-clamping cylinder. What overall behavior makes sense for this application? A. Bistable, retentive behavior, valve (final control element) without spring return B. Monostable, non-retentive behavior, valve (final control element) with spring return
5. Safe motion to end position A pneumatic cylinder operates in a production system. The sequence requires that the piston safely reaches its forward end position. Which pneumatic element would you use to ensure this? A. Timer (time delay valve, time relay ) B. Limit switch C. Pressure element (pressure sequence valve, electrical pressure switch) D. One-way flow control valve E. Shuttle valve (OR element) 6. Recognizing symbols You have installed valves requiring external lubrication into a previously unlubricated pneumatic control. A B C aaasa A Which of the valve combinations must you now install? D E 7. Recognizing valves by the port identification You have removed the valve shown from a control and want to replace it. What type of valve is it? A. 3/-way valve, pneumatically actuated on both sides B. 4/-way valve, pneumatically actuated, spring return C. 5/-way valve, pneumatically actuated, spring return D. 5/-way valve, pneumatically actuated on both sides E. 4/-way valve, solenoid-actuated
8. Way-valve designs Which type of valve is shown here? A. 5/-way valve (double pilot valve), suspended disk type B. 3/-way valve, ball poppet type C. 4/3-way valve, rotary slide type D. 5/-way valve (double pilot valve), slide valve type E. 3/-way valve, poppet type 9. Selecting a start pushbutton A system with multiple pneumatic cylinders is purely pneumatic. No electrical devices are installed. You have to install a suitable START pushbutton. What type of valve would you select as the start pushbutton? A. 3/-way valve, manually operated, normally closed B. 4/-way valve, manually operated, bistable C. 3/-way valve, manually operated, normally open D. /-way valve E. Dual-pressure valve 0. Selecting a valve You have to set up a pneumatic control. It must be possible for cylinder motion to be triggered by two different sensors at two different locations. Which additional valve must be installed? A B C D E
. Analyzing a simple circuit diagram The figure shows a simple electrical circuit comprising a Lamp H and the two switches S and S. Evaluate the following statements: +4 V S S H 0V Lamp H illuminates when Correct Incorrect... Switch S is operated.... Switch S is operated.... Both Switch S and S are operated.... Neither Switch S and S is operated. Mark your answers with a cross X in the appropriate column.. Selecting a valve combination A B C In a pneumatic control, the cylinder rod of a cylinder is only to extend after a delay of 0 seconds after signal input. 3 3 Which of the valve combinations shown must you install? D E 3
3. Detecting faults in a circuit diagram with one cylinder Documentation errors often cause time-consuming troubleshooting during commissioning. The circuit diagram shows the sequence for a simple control. Cylinder A should extend after actuation of S0 AND S, and return motion is controlled by S. Which of the following statements is correct? V A. Signal element S must provide a signal when cylinder A has reached the forward end position (right). For this reason, the position of S must be indicated by a mark on the front of the cylinder. B. The position of signal element S is incorrectly shown in the retracted position (left). S0 4 C. S0 must be mounted in the retracted position and should therefore also be designated there. D. The signal from S must act on the control side 4 and not on. E. The type of actuation Roller, mechanical for S is incorrect. 3 V /3 4 S 3 A 5 3 S S 3