This document is a technical manual for FRABA's MAGNETIC DRAW WIRE SSI product, which introduces the main features and characteristics of the product.
The POSITAL MDW‑S100B magnetic draw wire sensor provides high‑resolution absolute position measurement using a battery‑free Hall‑based encoder combined with a flexible draw wire. It features a compact industrial design, SSI (Synchronous Serial Interface) communication, and binary coding.
The document lists electrical, mechanical, and environmental data, including encoder resolution of 4096 steps per revolution, draw‑wire resolution of about 30 µm at 1.25 m, supply voltage 10‑30 V DC, and IP54 protection for the encoder housing. Ordering options and model variants with different wire lengths are also described.
| Encoder resolution | 4096 steps/revolution |
|---|---|
| Draw‑wire resolution (1250 mm) | ~30 µm |
| Supply voltage | 10‑30 V DC (absolute maximum) |
| Clock frequency | 100 kHz – 2 MHz |
| Power consumption | ≈2 W |
| EMC compliance | EN 61000‑6‑2, EN 61000‑6‑4 |
| Encoder housing protection | IP54 |
| Operating temperature (stationary) | -20 °C … +70 °C |
| Cable length options | 1250 mm or 2100 mm |
| Wire diameter options | 0.36 mm / 0.45 mm |
It uses a synchronous serial interface (SSI).
The sensor operates from 10 V to 30 V DC (absolute maximum ratings).
The encoder provides 4096 steps per revolution (12‑bit).
The sensor can operate from –20 °C to +70 °C when stationary.