Product Description:

The RT80240LF102C is an incremental magnetic rotary encoder manufactured by Danaher within the Dynapar Encoders series. It attaches to a motor or machine shaft and delivers two phased square-wave channels to a connected controller. The controller counts these signals to determine position and speed, making the encoder suitable for closed-loop motion tasks in industrial automation.

The module draws a nominal 95 mA from the 5 V logic rail, so its load on a control cabinet power supply is modest. At the sensing head, rotational changes are tracked up to a maximum frequency of 180 kHz, allowing reliable feedback even on high-speed spindles. Resolution is fixed at 240 PPR, so every mechanical revolution produces 240 electrical cycles for fine incremental counting. Output stages use an IC-WE differential line driver that can sink or source up to 150 mA, supporting long cable runs while maintaining noise immunity. The quadrature channels maintain an electrical separation of 90° ±45°. There is no index pulse, so absolute home information must be supplied externally. Channel A leads channel B when the shaft turns counterclockwise.

Connection is provided through a 10-pin latching industrial plug, which allows the cable to remain securely attached during machine operation. The stainless-steel sensing ring is separated from the Hall array by a controlled 0.075 in radial air gap, and this clearance must be maintained during installation. Output symmetry remains within 50% ±15°, limiting duty-cycle error that could distort velocity calculations. The assembly tolerates shocks of at least 200 G, allowing operation on presses, indexing tables, and other high-impact machinery. Magnetic sensing eliminates the need for optical windows or LED sources that could be affected by dust and debris. The stainless-steel sensor body provides a durable surface for use around moving industrial equipment.