plc preventive maintenence
TRANSCRIPT
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PLCPreventive Maintenance
PROGRAMMABLE LOGIC CONTROLLERPrepared By
Ketan Nayak (140413117005)Keyur Mistry (140413117004)
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Senses
Brain
Motion
Energy
Manual Work
Human Lags:• Cannot Work 24 Hours• Cannot work with 100% Accuracy
& precision• Efficiency decreases as
energy decreases
Human
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Controllers
Actuators
Sensors
Automatic Work
EnergyMachine
Advantages: • Accuracy
• No idle Time• More Production
Lags: • Regular
Troubleshooting & Maintenance
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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
Sensors
Actuator
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This is a PLC
Input Terminals
Output Terminals
D/A CardProgramming Cable
A/D Card
RS 485
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This is a PLC
Output Terminals
Programming Cable
Power 24 VDC
Battery
Input Terminals
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Output Terminals
Programming Cable Power 24
VDC
Input Terminals
This is a PLC
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PLCMaintenanceHEAT, DUST & NOISEREGULATION
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HEAT & DUST REGULATION
Temperature Withstand Range
0 ~ 60°C
PLC MAINTENANCE
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NOISE REGULATION
Shielded Cables for better communication
PLC MAINTENANCE
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NOISE GENERATING DEVICES
VARIABLE FREQUENCY DRIVES
MOTOR STARTERS
RELAYS AND CONTACTORS
SOLENOIDS
PLC MAINTENANCE
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NOISE FROM GROUNDING
PLC TROUBLESHOOTING 2
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PLCPREVENTIVEMAINTENANCE
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PLCPREVENTIVE MAINTENANCE
Regular Filter Cleaning
Regular DustingDust 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
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PLCPREVENTIVE MAINTENANCE
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PLCTROBLESHOOTINGAREAS
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Thanks