NadTec Engineering AB
ENSV
NADTEC / ENGINEERING NOTE 001
NadTec Engineering AB

Automation expertise built on real industrial experience.

From complex process control and turbine systems to production lines and machine automation, NadTec helps industrial companies develop, modernize and commission dependable control systems. You work directly with an experienced engineer who understands both the software and the reality of production.

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REGULATION / WATER LEVEL CONTROLNT-E-01
01LEVEL SENSORAI / PV
02PLC / PIDST / CONTROL
Dam level control, setpoint tracking and gate actuation.Open interactive simulation

The person behind NadTec

NadTec Engineering AB is led by Robert “Nadde” Karlsson, a senior automation engineer with experience from projects in Sweden and internationally. The focus is practical engineering, clear communication and solutions that remain reliable long after commissioning.

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Robert Karlsson
NT-E-01 / INTERACTIVE ENGINEERING DEMO
CONTROL SCORE / CHALLENGE—/ 100
Explore industrial automation

From code to a controlled process.

Water enters from the left and exits through the gate on the right. Explore automatic PID control with or without cascade, or operate the gate yourself in the 40-second challenge.

Personal best – manual control—/ 100
CHALLENGE / CONTROL THE GATE YOURSELF

Keep the level close to 60% for 40 seconds by moving the gate yourself. Inflow changes twice and a burst of heavy rain occurs during the challenge. Adjust the gate to earn points.

Automatic control—

Try PID control, trigger heavy rain, or control the gate yourself in the 40-second challenge.

LEVEL CONTROL / DAMNT-E-01 / SIM
● LEVEL NORMAL
42.0 m³/s INFLOW → SP 60% LEVEL SENSOR PLC / CTRL PID AUTO GATE 0% 42.0 m³/s OUTFLOW → AI / 4–20 mA / PVAO / 0–100 % / OUT

CASCADE: gate lift is limited by the waterline. DIRECT: full stroke is allowed. MANUAL: you decide.

Inflow · IN36%
Water level · PV58.0%
Setpoint · SP62.0%
Gate open · OUT42.0%

Low level risks water shortage and dry-running equipment. Overflow can cause flooding. Both conditions trigger visible alarms.

Process trendPV   SP   OUT

PV = level · SP = setpoint · OUT = gate travel (0–100%)

Control modesHow the demo works
CascadeLevel PID → inner gate-position control. Maximum lift is limited to the waterline.
Without cascadeThe level PID directly requests full-stroke gate position, including above the water.
PID / Structured TextThe PID adjusts the gate to track setpoint. The Structured Text display illustrates the controller calculations as you tune Kp, Ki and Kd.
Manual / 40 s challengeYou control the gate. Two inflow changes and a burst of heavy rain make the 40-second challenge more demanding.
CONTROLLER / CONFIGI/O ACTIVE
Steady inflow
PID tuning

AUTO regulates the level. MANUAL lets you position the gate through its full 0–100% travel.

PLC / STRUCTURED TEXTMONITORING ONLINE
PV 58.0SP 62.0OUT 42.0






Illustrative educational process model – not a real control or safety system.


Selected engineering projects
Different industries, different challenges: one focus on dependable automation.
Explore all projects →
Toyota Material Handling: automated fork production
TIA Portal, subproject management, PLC programming, testing and commissioning.
Read project →
Steam & radial turbine: pulp and paper
Migration of a relay-based control system to PCS7, including FAT and functional verification.
Read project →
Sawmill production line: Hjortkvarn
Mitsubishi GX/GT Works and Pluto for development, safety verification and commissioning.
Read project →
THE NADTEC APPROACH / 02
Engineering that works beyond the design stage.
01 / UNDERSTAND
Start with the process, not just the code.
02 / EXECUTE
Build, test and verify with production in mind.
03 / DELIVER
Commission for stable, maintainable operation.
A new system, a difficult fault or an upcoming upgrade?
Let’s discuss your automation challenge and find a practical way forward.
Contact NadTec →