E&I PROX – Engineering Toolkit

E&I PROX is a practical offline Engineering Toolkit for Electrical • Instrumentation • Automation professionals, technicians and students. It combines engineering calculators, technical references, wiring and pinout guides, troubleshooting workflows and quick-reference data in one focused app. CALCULATORS - Cable sizing, voltage drop, AC power, heater resistance and circuit-breaker setting checks - Complete engineering unit conversion, including mbar, pressure, flow and electrical units - Motor current, synchronous speed, slip, torque and motor braking calculations - Separate braking paths for VFD dynamic braking, DC injection and mechanical brakes - Star–delta conversion, AC reactance, RLC impedance, resonance, RMS/peak, resistor and capacitor networks, voltage dividers and dB - Lighting, generator, earthing, solar PV, battery bank and UPS sizing - 4–20 mA scaling, load cells, belt-scale calibration and mV/V calculations - PT100/PT1000 and thermocouple engineering tools - Transformer sizing plus CT, VT and protection selection support - Cable derating, tray fill, pulling tension and harmonic calculations ENGINEERING REFERENCES - Electrical power, motors, drives, protection, transformers and switchgear - Instrumentation, process measurement, control valves, calibration and maintenance - PLC hardware, CPU and I/O LED meanings, control logic and industrial automation - Industrial wiring and pinouts for Ethernet, PROFINET, PROFIBUS, M12, RS-232, RS-485, Modbus RTU, CAN/CANopen, 4–20 mA, HART, RTD, thermocouples, PNP/NPN/NAMUR sensors, encoders and PLC I/O - Searchable, version- and configuration-aware ABB Relion REF615, REM615 and REM620 protection-function references - Siemens and ABB drive fault-code references BUILT FOR FIELD WORK - Works fully offline - Universal search, favourites and recently used items - Step-by-step troubleshooting for motors, sensors, PLCs, drives and common field equipment - Labeled engineering illustrations optimized for mobile viewing - Light and dark themes - RTL and LTR support - Arabic, English, German, Turkish and additional professional language overlays Engineering results are guidance only. Always verify selections against local electrical codes, approved project studies, installation conditions, equipment nameplates and current manufacturer documentation. Isolation, commissioning, protection settings and maintenance work must be performed by qualified personnel using approved safety procedures.