2212700240 Danaher
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The Danaher 2212700240 is part of the Dynapar Encoders series and features a resolution of 1270 PPR with a maximum shaft speed of 6000 RPM. The encoder supports a double ended 3/8 inch shaft and includes a CMOS line driver differential output. It is designed with a 30 lb axial shaft load and a 40 lb radial shaft load.
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Product Description:
The 2212700240 is an incremental rotary encoder produced by Danaher within the Dynapar Encoders series. The unit converts mechanical rotation into electronic pulse streams for motion controllers and PLCs, providing position and speed feedback in packaging machines, conveyors, and similar automation axes. It integrates a CMOS line driver that delivers complementary differential channels, allowing noise-resistant transmission over long cable runs when paired with differential receivers.
This encoder offers a resolution of 1270 PPR, delivering 1,270 pulse cycles per revolution to support precise servo positioning. It remains accurate at shaft speeds up to 6000 rpm, while its internal electronics maintain pulse integrity with a frequency response of at least 120 kHz. The stainless-steel shaft can withstand an axial load of 30 lb and a radial load of 40 lb, helping protect the bearing set from belt tension and end-thrust forces. A differential output stage complements the CMOS line driver and minimizes timing skew between paired channels. The mating connector is an MS3106A-16S-1S circular plug, and the device uses an MS-series threaded coupling for secure disconnection when access is required. Its moment of inertia is 1.3 × 10⁻⁴ oz-in-s², which limits the acceleration load imposed on small servo motors.
A double-ended shaft with a diameter of 3/8 in permits installation of a flexible coupling on one end and a tachometer wheel or hand knob on the other. Static friction is low, as indicated by a starting torque of 2.5 oz-in, helping prevent slip when the available drive force is limited. The control circuitry draws a maximum of 110 mA from the supply, reducing demand on shared encoder power rails. The encoder weighs no more than 14 oz, which limits the additional mass placed on light-frame machine assemblies. Its double-ended arrangement also allows separate mechanical accessories to be attached without sharing one coupling point. The low starting torque supports responsive movement when the encoder is connected to compact motors or lightly loaded shafts.
