The Optidrive E4 is the latest general-purpose variable frequency drive (VFD) from Invertek Drives. Engineered for modern automation systems, the Optidrive E4 builds on the global success of the Optidrive E3, delivering enhanced diagnostics, improved connectivity and advanced motor control while retaining Invertek’s renowned ease of use.
Rhydian Welson, Sales & Marketing Director at Invertek Drives explains: ‘’The E4 platform provides a strengthened technical foundation for future development and wider application coverage. It has been designed to support the evolving needs of OEMs, machine builders and industrial users who require efficient, flexible and reliable motor control solutions. As automation systems become more advanced, customers demand greater functionality, easier integration, and improved performance.’’
The Optidrive E4 features embedded diagnostics, built-in flight recorder, dual-channel SIL3 Safe Torque Off (STO), USB-C, Bluetooth and Industrial Ethernet communications for live system integration.
The E4 has been designed to support a wide range of motors, including IE2 and IE3 induction, AC PM, brushless DC, SynRM, LSPM and hybrid permanent magnet assisted reluctance (PMAREL) motors, delivering future-proof compatibility with high-efficiency motor technologies. Invertek’s precise current control algorithms ensure optimum torque production, superior thermal management, reduced electromagnetic interference (EMI), and a built-in C1 EMC filter.
A dual-channel Safe Torque Off (STO) system is included as standard, certified to SIL3 and PL e/Cat 3. STO provides robust protection in safety-critical applications. E4 is ideal for applications such as CNC machining, automated cells, materials handling, and high-speed packaging lines. Integrating the stop function into the drive simplifies safety-circuit design, removes the need for external contactors, and speeds up emergency stops.
The drive’s communication platform has been improved. With Industrial Ethernet interfaces, including PROFINET, EtherCAT, and Modbus TCP, allowing real-time data exchange for precision control and diagnostics. This supports predictive maintenance strategies and integration with Industry 4.0 and IIoT systems. The flight recorder provides key operational parameters, delivering real-time data for diagnostics and minimised downtime.
USB-C connectivity allows you to configure the drive before installation, with USB-C providing power for programming without a mains supply. Bluetooth also provides remote commissioning and monitoring using a smartphone and Invertek’s OptiTools Mobile App, making it a great feature for when drives are installed in confined or difficult to access locations.
Every E4 drive has a unique QR code, offering instant access to the Digital Optidrive Passport. This online resource brings together drive data including datasheets, ecodesign information, factory test certificates, and product documentation. It allows engineers, OEMs, and installers to easily find everything they need, making commissioning, traceability, and lifecycle support much easier.
Invertek Drives will be exhibiting its newest Optidrive E4 alongside its core product range at SPS in Nuremberg, Germany, between 24–26 November 2026. Our technical team (Gareth Jones and Justin Walker) and sales team (Justin Peters, Amanda Raybould, Rhys Griffiths, Paul Pritchard, Ben Dunn, Ben Lloyd, Ian Watts and Guido Lowitsch) look forward to welcoming you to our stand in Hall 3A, Stand 455.
