Toshiba VF-S15 Inverter Control GUI

A PyQt5-based GUI for controlling and monitoring a Markham M-Tec P20V mortar pump, with a Toshiba VF-S15 inverter connected to an industrial motor system via RS485 (ASCII protocol).

⚙️ System Overview

• Pump: Markham M-Tec P20V
• Inverter: Toshiba VF-S15 (ASCII protocol over RS485)
• Motor: VEM Motors GmbH, Model: K21R 132 M 4, 4-pole, 4.0 kW, 3-phase, 230/400 V
• Gear Reducer: STM Riduttori (Italy), Type: RG075, Gear Ratio: 10.07:1
• Connection: USB-to-RS485 adapter (19200 baud, Even parity)

📊 Monitored Parameters

Signal	Source Code Tag	Description
Output Frequency	RFD00	Displayed in Hz (scaled by 0.01)
Output Current	RFD03	Scaled by inverter-rated current from RFE70 (percent × rated A)
Output Voltage	RFD05	Scaled by inverter-rated voltage from RFE71 (percent × rated V)
Motor RPM	—	Calculated as RPM = (Freq × 120) / 4
Shaft RPM	—	Calculated as Motor RPM / 10.07

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🖥️ Features

• Set frequency or RPM
• Start/Stop motor
• Forward/Reverse run toggle
• RS485/manual toggle
• Emergency Stop & Reset
• Real-time monitoring (100 ms interval)
• Logging to CSV (with timestamp and ms precision)

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📁 Project Structure

.
├── Pump_Control_v1.py  
├── requirements.txt  
├── logs/  
└── doc/  
    ├── S15_RS485_Communication_Manual.pdf  
    └── Toshiba VFS15 User Manual.pdf  

📦 Installation

git clone https://github.com/YOUR_USERNAME/toshiba-vfs15-gui.git
cd toshiba-vfs15-gui
pip install -r requirements.txt

▶️ Running the GUI

This project requires Python 3.10+

python3 Pump_Control_v1.py

• Ensure the inverter is connected via /dev/ttyUSB0
• Modify the serial port in code if using a different device (e.g., /dev/ttyUSB1 or COM3 on Windows)

## 📁 Logs
CSV log files are saved to the `logs/` directory and include:
- Timestamp  
- Frequency (Hz)  
- Current (A)  
- Voltage (V)  
- Motor RPM  
- Shaft RPM