Industrial Automation

Where it pays off

The return on an automation investment shows up in three places: cycle time, repeatability and traceability. When a line is managed by hand, three shifts produce three different results; change the operator’s experience and the product changes with it. A control system removes that variance and reduces a product changeover to selecting a recipe.

The work we see most often:

• New line builds. Bringing independent units from different machine suppliers under a single control logic: line-wide stop, speed synchronisation and product tracking.
• Retrofit. Moving a fifteen-year-old line whose documentation has been lost onto new control hardware while keeping the existing mechanics.
• Takeover. Making a system readable again after the integrator who built it is gone and nobody dares to touch it.
• Capacity increase. Reducing cycle time on lines that are mechanically capable but bottlenecked on the control side.

How we work

We always start with the I/O list. Which sensor lands on which terminal, which signal is in fact unused, which valve has been given two addresses — a program written before that is established gets rewritten during commissioning anyway.

Next come the tag dictionary and the alarm hierarchy. When an alarm list is built without discipline, operators stop reading it: if one fault triggers twenty alarms, none of those twenty carry information. So we reduce alarms to root causes and suppress the derivative ones.

On the interface side the test is simple: an operator should know what to do on a screen without asking. Colour is used to show an alarm, not for decoration. The screen hierarchy follows the physical flow of the line, not a menu tree.

Commissioning happens in two stages: FAT at the workshop (panel and software against a simulated field) and SAT on site (real process, signed protocol). Skipping FAT and going straight to site turns a fault that could have been found at a bench into downtime found on a running line.

What we watch for

Network topology is decided up front. A switch added to a Profinet segment as an afterthought comes back months later as unexplained cycle delays. The network diagram is part of the electrical drawing set.

The safety chain is not buried in software. Emergency stop and guard door interlocks run through a hardware safety relay or a safety PLC; the standard control program only reads them, it never governs them.

Version control from day one. PLC projects are code too. A project managed as “final_v2.zip” becomes, six months later, a system where nobody knows which release is running on the floor.

A rollback plan is mandatory in a retrofit. When the new system behaves unexpectedly, there has to be a way to save the shift. That path is a written item in the commissioning plan.

How this connects to the other layers

If the control layer does not produce the right data, nothing above it works: reporting counts wrongly and a prediction model learns the wrong thing. That is why we usually plan automation work together with data acquisition and analytics — once the tag dictionary is right, every layer built on top of it feeds from that.