EtherCAT Servo Drive Solution

The FCE1100/FCE1353 supports cycle times down to 125μs, which is the minimum recommended for most servo drive applications. This cycle time enables control loop bandwidths up to 2kHz for the current loop. For less demanding applications, cycle times of 250μs or 1ms can be used to reduce processor loading. The actual achievable performance depends on the host DSP's processing capability and the complexity of control algorithms. The FCP32C335 can comfortably handle FOC calculations within 125μs cycle time for standard servo applications.

Use 125μs cycle time for high-performance applications. Longer cycle times can be used for lower bandwidth requirements.

The distributed clock feature can synchronize virtually unlimited axes in theory, limited only by network topology and cycle time. Practical implementations typically synchronize 8-32 axes on a single EtherCAT network. The synchronization accuracy is maintained regardless of the number of axes because each slave compensates for its own propagation delay. For very large systems with hundreds of axes, network segmentation may be used. The FCE1100/FCE1353 hardware DC implementation ensures <100ns jitter across all synchronized axes.

Design your network topology based on application requirements. Contact us for multi-axis system design guidance.

The FCP32C335-based FOC implementation supports various motor types: Surface-mount PMSM (Permanent Magnet Synchronous Motor), Interior PMSM (IPMSM) with reluctance torque utilization, AC induction motors with rotor flux orientation, BLDC motors with sinusoidal commutation. The control algorithm automatically handles different motor parameters through configuration. Sensor-based operation uses quadrature encoders or resolvers. Sensorless operation is supported for applications where encoder mounting is not possible, though with reduced performance at very low speeds.

Specify your motor type and feedback requirements. We provide motor parameter configuration assistance.

HRPWM (High-Resolution PWM) provides 150ps resolution compared to approximately 10ns for standard PWM at typical switching frequencies. This 60x improvement enables: Significantly reduced torque ripple, especially at low speeds where standard PWM quantization is most noticeable. Smoother motion profiles with finer position resolution. Better current control precision leading to improved dynamic response. Reduced audible noise from the motor. Ability to implement advanced modulation techniques. For high-performance servo applications, HRPWM is essential for achieving premium motion quality.

Use HRPWM for high-performance servo drives. Standard PWM may be sufficient for general VFD applications.

Migration is straightforward due to pin-to-pin compatibility: Hardware migration involves direct component replacement - FCE1100 replaces ET1100, FCP32C335 replaces TMS320F28335. No PCB changes are required if the original design followed standard practices. Software migration requires updating header files and peripheral drivers to match Funcience register definitions. The control algorithms and application code remain largely unchanged. ESI file needs to be updated with FCE1100 identity information. Funcience provides migration guides, code examples, and technical support. Most customers complete migration within 2-4 weeks.

Contact us for migration support, reference code, and compatibility documentation.

The solution includes comprehensive protection: Hardware protections implemented in gate drivers - overcurrent shutdown, undervoltage lockout, overtemperature protection. Software protections in DSP - overcurrent limiting, overvoltage protection, encoder loss detection, following error monitoring. Communication watchdogs - loss of EtherCAT communication triggers safe state. Safe torque off (STO) support for safety applications. All protections are coordinated to ensure safe shutdown and prevent equipment damage. Protection parameters are configurable for different application requirements.

Protection features can be configured for your application. Contact us for protection scheme design assistance.