Speed limiter

Precision Digital Speed Limiter for High‑Performance Drives

The Speed Limiter is a compact, high‑precision controller designed to clamp the operating speed of electric motors, gearboxes, or other rotational machinery within user‑defined thresholds. It employs a real‑time closed‑loop algorithm that monitors tachometer or encoder input, immediately adjusting torque or voltage to maintain the target speed while minimizing overshoot and oscillations. Built on a rugged, industrial‑grade ARM core, the module offers low latency (<2 ms) and a wide input range (5 V–48 V), making it ideal for inline conveyor systems, automated assembly lines, and high‑speed CNC tooling.

Key features extend beyond simple speed enforcement: it includes configurable ramp‑up/down curves, proactive fault detection, and an optional Ethernet‑based OPC UA interface for seamless integration with plant‑wide SCADA systems. The device meets IEC 61508 SIL‑2 safety standards, ensuring reliable operation in safety‑critical environments.

• Key Spec 1: Adjustable speed limits (0–12 000 RPM) with ±0.5 % accuracy
• Key Spec 2: Low‑latency PID control loop (sampling period: 500 µs)
• Key Spec 3: Dual communication ports: CAN‑FD (1 Mbps) and Ethernet (100 Mbps)
• Common Use Case: Motor speed regulation in automated packaging lines to ensure product consistency and operator safety