Motrona LW217 LW218 Fiber Optic Signal Converter for SSI Absolute Encoder

The innovative optical fiber modules from moTrona ensure reliable transmission of encoder signals over distances of up to 3000 m. They are resistant to extremely strong electromagnetic fields and disturbances. Thus, our fiber optic modules are predestined for use in potentially explosive atmospheres.

The fiber optic modules LW217 and LW218 together form a transmission system for data transmission of SSI signals by means of optical fibers. The system ensures a reliable optical fiber-optic signal transmission up to 2000 meters (also due to explosive areas) and consists of an LW transmitter and an LW receiver.

The component with the designation LW217 serves as a transmitting module for the transmission of optical fibers. It converts the absolute SSI signals of a conventional sensor, measuring system or encoder with a synchronous serial interface (SSI) into optical fiber signals. The LW receiver (see LW218) converts the optical signals back into SSI signals.

Features

• 1 SSI input / output channel [RS422] with format DATA+, DATA-, CLOCK+, CLOCK-
• 1 Error input (LW217) resp. 1 open-drain-output (LW218)
• Maximum input frequency 1 MHz
• Very short conversion time < 300 nsec.
• Optical wavelength 850 nm
• Transmission distance up to 2000 meter
• Power supply 5 VDC (for LW217)
• Power supply 10 ... 30 VDC (for LW217-1)
• Free adjustable SSI resolution from 1 ... 99 bit
• Snap on housing for top hat rail (according to EN 60715)
• Pre-configured optical fibers available

Model Numbers

LW217 - Transmitting Module 

LW218 - Receiving Module