The is a high-voltage AC motor controller designed specifically for electric and hybrid vehicles, supporting both AC Induction and Permanent Magnet AC (PMAC) motor technologies. Technical Overview
The Size 8 utilizes a multi-pin automotive-grade connector for logic and communication:
Check for short circuits in motor windings or wrong motor parameter settings. Controller Over-temperature Heat sink temperature has exceeded 85°C.
Significantly heavier than Size 2, 4, or 6 units. It requires solid, vibration-resistant mounting structures. Cooling Requirements At peak current, the unit generates substantial heat.
The following are the technical specifications and drawings for the Sevcon Gen4 Size 8 controller: sevcon gen4 size 8 manual
Input the exact nameplate data of the motor into the object dictionary. Run the automated tuning routine to map the stator resistance and dead-time compensation.
Sevcon Inc. [insert address] [insert phone number] [insert email]
Because of the high current throughput, liquid cooling is mandatory for the Size 8 to achieve peak performance.
is a rugged, compact unit engineered for heavy-duty automotive and commercial transport applications FSIP Electronics Voltage Range : Operating voltage from 128 V to 400 VDC Current Ratings Boost (Peak) : 400 Arms. 30-second Peak : 360 Arms. 2-minute Peak : 300 Arms. Continuous : 200 Arms. Environmental Protection : Rated at The is a high-voltage AC motor controller designed
Run all three motor phases (U, V, W) through a shielded conduit, grounding the shield to the motor frame and controller chassis to minimize electromagnetic interference.
Powers on the internal logic board of the controller.
The manual dedicates 15 pages to the J1 connector. Critical pins include:
IP66 or IP6k9k/IP67 rated, with an operating temperature range of -40°C to +85°C. Installation & Configuration Highlights Significantly heavier than Size 2, 4, or 6 units
Typically used with Permanent Magnet Synchronous Motors (PMSM).
The Size 8 frame is designed to handle extreme thermal and electrical loads. It features a rugged, IP66-rated enclosure to protect against water and dust ingress, making it suitable for harsh industrial and automotive environments. Key Electrical Ratings 400VDC to 800VDC Peak Current (1 minute): 400 Arms
Before installing the Sevcon Gen4 Size 8 controller, ensure that you have read and understood the following precautions:
When you open the official , the first chapter is always dedicated to mechanical installation. Here are the critical takeaways: