Failsafe Wiring Practices
Failsafe wiring practice is one of those topics that separates control system designers and electricians from other technical specialties. This is one of the areas that show up as problems...
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PLC Problems Troubleshooting
Troubleshooting PLCs can be started by checking the healthiness status of CPU, I/O Modules, Fuse Blow-out and different PLC Failure reasons including wiring, field transmitters healthiness status or transmitter configuration,...
How PLC Reads the Data from Field Transmitters
Instrumentation and control rely on converting physical or process variables into a more useful format for the operator display. Pressure in a pipe is converted to mechanical deflection of a...
History of Programmable Logic Controllers (PLC)
Every control system may be divided into three general sections: input devices (sensors), controllers, and output devices (actuators). The input devices sense what is happening in the process, the controller...
How to Reduce Relay Noise in PLC Systems
Today we are going to discuss about Relay Noise reduction method. Sometimes we observe more noise is generating by relay output switching. In such case , a Noise filter must...
Main differences between Sinking and Sourcing circuits ?
What are the main differences between sinking and sourcing circuits ? Lets check the below animations of sinking and sourcing. Sinking vs Sourcing In a DC circuit, power flows in...
PLC Program Examples
PLC Program Examples Discuss different PLC program examples for Signal lamp task, Valve operation program and make an output switch off when any of the sensors activated. PLC Example 1...
PLC Multiple Outputs Configuration
PLC Multiple Outputs Configuration PLC Multiple Outputs Configuration useful for PLC Sequence of Outputs or Sequence Logic, PLC Ladder Rung with Two Outputs, PLC Ladder Rung with two inputs &...