1020236244

PROCESS AUTOMATION

PRACTICUM 1043
THEORY Hrs
Unit – I: HYDRAULICS AND PNEUMATIC SYSTEMS
Pneumatic systems: Elements – FRL unit – Direction control valves – Flow
control valves – ISO symbols of pneumatic components – Pneumatic circuits for
various industrial applications.
Hydraulic systems: Elements – Comparison of pneumatic systems – Service
properties of hydraulic fluids – ISO symbols of hydraulic components – Hydraulic
circuits for various industrial applications.

Unit – II: LOGIC GATES AND PLC
PLC: Features of PLC – PLC Block diagram – PLC scan – Fixed and Modular
PLC – Ladder logic – Basic principles of ladder diagram – Analog I/O and Digital
I/O, NO, NC contacts – Coils – AND logic, OR logic – Applications – Timer –
Counter.

PRACTICAL EXERCISES
Ex.No Name of Experiment Hrs.
1. PNEUMATICS LAB
Operation of double acting cylinder with quick exhaust valve.
15 2. Speed control of a double acting cylinder using metering-in and
metering-out circuits.
3. Automatic operation of double acting cylinder in single cycle -using
limit switch.
4. HYDRAULICS LAB
Direct operation of double acting cylinder.

10
5. Speed control of double acting cylinder using metering-in and
metering-out circuits.
6. PLC LAB
Direct operation of a motor using a latching circuit, AND, OR logic
circuits. 25
7. On-Delay control of a motor and Off-Delay control of a motor.

(ii)

8. Automatic operation of double acting cylinder Multi-cycle
9. Sequential operation of a double acting cylinder and a motor.
10. Automatic operation of DAC, forward – time delay – return.

Assessment Test and Revision 10
TOTAL HOURS 75