1
The machine does not start
Possible causes
- No mains voltage present
- Power supply fault in the control system
- Faulty or non-functioning push button
- Emergency stop button left engaged
- Fault in the motor starter circuit
- Faulty contactor
Fault-oriented industrial service
Typical Control Faults in Industrial Machinery
If an industrial machine fails to start, stops unexpectedly, or reports an error, the underlying cause is often related to the control system or the electrical installation.
In this situation, most people are not looking for a generic service. They are looking for answers: why the machine stopped, what is causing the shutdown, and which direction makes sense for fault finding.
Fault status
Shutdown, fault signal, unstable operation
Red signal again. The machine is down, production is waiting, and everyone is asking the same question: why are we stopped?
Frequently encountered faults
The issues below regularly occur in industrial equipment, motor starters, conveyors, and control cabinets.
2
The conveyor does not start or stops
Possible causes
- Mechanical obstruction or overload
- Jammed belt or roller
- Electric motor or gearbox fault
- Control fault in the start circuit
3
The electric motor starts and then stops
Possible causes
- Overload protection trip
- Faulty soft starter or frequency inverter
- Control fault
- Faulty relay or contactor
4
The control system indicates a fault
Possible causes
- Sensor fault
- Control circuit fault
- PLC fault
- Power supply issue
Fault-finding approach
How we approach a fault
When an industrial machine stops, the root cause is not always obvious. The issue may be mechanical, electrical, or related to the control logic, so we assess the system as a whole before deciding on the repair method.
In some cases, a small repair is enough. In others, the right solution is a partial redesign, refurbishment, or control modification.
Practical position
Not every fault requires a completely new control system.
In many cases, a targeted repair is sufficient. The right decision only comes after the actual fault has been identified.
Not every problem calls for the same type of intervention. In many cases, a smaller repair is fully sufficient.
The goal in every case is to define the right solution after the fault has been clearly identified, in a form that is technically justified, functional, and economically reasonable.
Real references
We also show resolved faults from previous jobs
If you want to see more than typical symptoms, we also present a few short real-world fault references from completed industrial jobs.
Have you seen a similar issue?
Send us a few lines about the fault, the machine, or the shutdown conditions, and we will help you identify the right direction.
Quick fault description
How should you describe the problem?
A technical description is not required. Just a few simple details already help us understand the issue.
If you do not know the exact fault, that is not a problem.
If possible, write for example about
- What machine or equipment is involved
- What exactly happens (does not start, stops, shows a fault)
- When the fault occurs (at startup, during operation)
- Whether there is a warning light or error message
- Whether anything happened before the fault (power outage, shutdown, maintenance)
- Whether there is any unusual sound, clicking, or tripping
- Which part is affected (motor, conveyor, control system, sensor)
Even if you can only describe one or two of these points, that already helps a lot with identifying the fault.
Example fault description
"The conveyor does not start and the motor protection trips."
"The machine starts, but stops again after a few seconds."
"The control system indicates a fault and the display shows a power supply error."
If you would rather not send it in writing, feel free to call us.