Why is the PLC output on, but the field device isn't energizing?

Most of the time, the issue is external to the PLC—such as a mechanical failure, a bad switch, or a blown fuse. Less common causes include wiring problems or a faulty output module.

What causes a PLC to lose its program or become corrupted?

The most common cause is a dead PLC backup battery. Poor power quality can also contribute. Installing a line filter and maintaining the battery helps prevent corruption.

How can I troubleshoot an intermittent sensor issue?

Check for poor grounding, loose wiring caused by vibration, or electrical noise. These are the most common causes of intermittent sensor behavior.

What causes a contactor to chatter?

Chattering is usually caused by low voltage or dirty contacts preventing the coil from staying energized.

What is the difference between line voltage and phase voltage?

Line voltage is measured between two phases in a 3-phase system. Phase voltage is measured between one phase and neutral.

What is the difference between latching and non-latching logic?

Latching logic retains its state after power loss. Non-latching logic resets to zero or off when power is removed.

Can a 4–20 mA analog card read a 0–10 V signal?

It depends on the PLC card model. Some cards support both signal types, while others are dedicated to only one.

How do you distinguish between a hardware failure and a software bug?

Check whether the PLC is outputting to the real-world I/O. If it is, the issue is likely hardware—external wiring, devices, or the output module. If not, the problem is likely in the program.

What tools do you need to troubleshoot electrical and PLC controls?

A multimeter, a laptop with PLC programming software, and accurate electrical/PLC diagrams are essential tools.

Is this course suitable for beginners?

Yes. The course is designed for technicians and electricians with little or no troubleshooting experience. The simulations guide learners step-by-step.

Does this course include hands-on simulations?

Yes. The course includes interactive simulations for control circuits, motor circuits, and PLC faults, plus a virtual VOM meter with movable leads.

Does this course teach PLC troubleshooting?

Yes. The course includes eight PLC troubleshooting problems that teach how to diagnose I/O faults, wiring issues, and logic-related failures.

Is this course compatible with Windows 11 and Windows 10?

Yes. All Koldwater training software is compatible with Windows 11, Windows 10, and even Windows XP.

Is this a digital download?

Yes. The Electrical & PLC Troubleshooting Training Course is delivered as a digital download. Activation instructions are emailed within 24 hours.

Electrical & PLC Troubleshooting Training Course

Name: Electrical & PLC Troubleshooting Training Course
Brand: Koldwater Training Software
SKU: KT-900-TSTrainer
Price: 119.00 USD
Availability: InStock
Rating: 4.8 (47 reviews)

Hands‑On Troubleshooting Using Real‑World Electrical & PLC Simulations (10 hours est.)

This Electrical & PLC Troubleshooting Training Course teaches technicians how to diagnose faults in basic control circuits, motor control circuits, and PLC‑based systems using realistic, interactive simulations. Learners practice proper troubleshooting techniques, use a virtual volt‑ohm meter with movable leads, and work through real‑world electrical and PLC problems in a safe, guided environment.

The course is ideal for maintenance technicians, electricians, and anyone responsible for diagnosing electrical or PLC‑related issues on the plant floor.

Course Topics Include:

Basic Electrical Troubleshooting Techniques
Using a Virtual Volt‑Ohm Meter (VOM)
3 Basic Control Circuit Problems
5 Motor Control Circuit Problems
8 PLC Control Problems
Interpreting Ladder Logic for Troubleshooting
Motor Control Circuit Diagnostics
PLC Input/Output Fault Isolation
Interactive Quiz & Lab Manual
Certificate of Completion

Electrical & PLC Troubleshooting — sample lesson from the TSTrainer course.

Electrical Troubleshooting Training Video

Troubleshooting interface examples — Click to zoom in.

View Troubleshooting Course Details

What Students Are Saying

Ty Montgomery — Maintenance Technician
“The company that I work for recently bought your TSTrainer. They allowed all of the maintenance guys to use it. It has really helped to hone my troubleshooting ability.”

Order Now

Your order will be processed by our parent company, Business Industrial Network (BIN95.com). Download/activation information is emailed within 24 hours for digital versions.

Digital Download

License Types:

Student License – 1 student/learner may take the course.

Site License – Unlimited students/installs at a single physical location.

Enterprise License – Unlimited Site Licenses across multiple locations. (Request Quote)

Site and Enterprise licenses include a mini LMS for progress tracking.

This Electrical Troubleshooting Training Software is an excellent addition to the Motor Controls Training Software.

This title also makes for an excellent supplemental course to all the others. A little extra troubleshooting never hurt.

For instructions on purchasing by Purchase Order, contact sales@koldwater.com.