This PPT Can be used by the Students of GTU or Other University for Reference(I Know you'll Copy Paste) Anyways.

1. PL
CPreventive
Maintenance
P
R
O
G
R
A
M
M
A
B
L
E
L
O
G
I
C
C
O
N
T
R
O
L
L
E
R

2. Sense
s
Brain Motion
Energy
Manual Work
Human
Lags:• Cannot Work 24 Hours
• Cannot work with 100% Accuracy &
precision
• Efficiency decreases as energy
decreases
Human

3. Controllers
Actuators
Sensors
Automatic Work
Energy
Machine
Advantages:
• Accuracy
• No idle Time
• More Production
Lags
: • Regular
Troubleshooting &
Maintenance

4. What is Controllers?
Controller
A closed Loop Control System
Controller is a part of Automatic Control System, which process the
signal from sensors & send it to the actuators
Sensor
s
Actuator

5. Thisis aPLC InputTerminals
OutputTerminals
D/ACard
ProgrammingCable
A/DCard
RS 485

6. Thisis aPLC
OutputTerminals
ProgrammingCable
Power24 VDC
Battery
InputTerminals

7. OutputTerminals
ProgrammingCable
Power24 VDC
InputTerminals
This is aPLC

8. PL
CMaintenance
HEAT, DUST &
NOISEREGULATIO
N

9. HEAT & DUST
REGULATION
Temperature Withstand Range
0 ~ 60°C
PLC
MAINTENANCE

10. NOISE
REGULATION
Shielded Cables for better communication
PLC
MAINTENANCE

11. NOISE GENERATING
DEVICES
VARIABLE FREQUENCY
DRIVES
MOTOR
STARTERS
RELAYS AND
CONTACTORS
SOLENOID
S
PLC
MAINTENANCE

12. NOISE FROM
GROUNDING
PLC TROUBLESHOOTING
2

13. PL
C
PREVENTI
VEMAINTENANC
E

14. PL
CPREVENTIVE
MAINTENANCE
Regular Filter Cleaning
Regular Dusting
Dust restricts heat
dissipation Avoid
Conductive Dust
I/O Module Check for any
Loose connections
Avoid Noise generating
Equipment close to PLC
Avoid documentation to create
HOT SPOT
Install vibration Detector in
area of high vibration

15. PLC
PREVENTIVE
MAINTENANCE

16. PL
C
TROBLESHOOTIN
GAREA
S

17. Thank
s