⚙️ PID MODE – AUTOMATIC INVERTER CONTROL WITH SENSOR FEEDBACK!
Kỹ Thuật Việt provides a wide range of inverters – from cost-effective models like Parker AC10 to high-end lines like Parker AC30 – ideal for smart PID control and energy-saving applications.
🔍 Introduction
Have you experienced pump overload, unstable fan speed, or fluctuating drying temperatures?
➡️ All of these can be solved easily with PID mode on inverters!
1. What is PID?
PID stands for:
- P – Proportional
- I – Integral
- D – Derivative
In simple terms:
- The inverter reads sensor values (pressure, temperature, water level…)
- Compares them to the setpoint
- Automatically adjusts motor speed to maintain stability!
2. Typical Applications of PID Mode
📌 Commonly used in:
- Booster pump and alternating pump systems
- HVAC fans, water treatment
- Oven, boiler temperature control
- Level control in tanks
📌 Real-world example:
Water pump system: When pressure drops due to multiple open valves, the sensor sends a signal to the inverter, and PID automatically increases pump speed to stabilize water pressure.
3. Advantages of PID Mode
- Fully automatic – no manual intervention
- Energy-saving – runs only at required speed
- Motor protection – avoids constant max load
- Excellent control of pressure, temperature, and flow stability
4. Requirements for Using PID Mode
✅ You need:
- Analog sensor (typically 4–20mA or 0–10V)
- Inverter with analog input (AI)
✅ Proper parameter setup:
- Proportional (P), Integral (I), Derivative (D)
- Motor frequency limits (min/max)
- Signal inversion if needed (some sensors output reversed signals)
5. Typical PID Settings
⚙️ Example using Parker AC10 inverter
- AI2: 4–20mA input from pressure sensor
- Setpoint: 10 bar
- P gain: 0.5
- I time: 1.5 s
- D time: 0.1 s
- Min Freq: 20 Hz
- Max Freq: 50 Hz
(*Tuning required depending on actual system*)
6. Simple PID Control Diagram
🔚 Summary
PID mode = Makes your inverter smarter, more efficient, and more precise.
➡️ Highly recommended for systems requiring stable control of pressure, temperature, flow, or levels!
💡 Need help selecting an inverter with PID support? Contact Kỹ Thuật Việt – our technical team is ready to assist!
