← AcademyOnCallGrid

Series

Maintenance Fundamentals

Ten episodes building from apprentice basics to advanced troubleshooting. Read in order or jump to what you need.

  • 001
    What is a PLC?
    Apprentice
    Read →
  • 002
    Digital Inputs vs Digital Outputs
    Apprentice
    Coming Soon
  • 003
    How a Sensor Talks to a PLC
    Apprentice
    Coming Soon
  • 004
    Motor Starter vs Contactor vs Overload
    Technician
    Coming Soon
  • 005
    Reading a Basic Wiring Diagram
    Technician
    Coming Soon
  • 006
    What is a VFD and Why Does It Matter
    Technician
    Coming Soon
  • 007
    Analog Signals — 0-10V vs 4-20mA
    Technician
    Coming Soon
  • 008
    Why an E-Stop Doesn't Always Mean the Machine Is Broken
    Advanced
    Coming Soon
  • 009
    How to Troubleshoot a Conveyor Fault Step by Step
    Advanced
    Coming Soon
  • 010
    PLC → SCADA → CMMS → OnCallGrid
    Advanced
    Coming Soon

Every repair. Remembered. Ready.