Rotation Industrial encoders: Precise Measuring Technique with Defined Values.

Incremental and absolute encoders, geared potentiometers.

Incremental Encodersand Absolute Encoders In machine and equip-ment engineering, these sen-sor components for the detectionof distance, angle or number ofrotations are indispensable. They are based on the optical measuringprinciple of an encoding disk withlight transparent and opaque seg- ments. Evaluation electronics de-rive information from electricalpulses of opto-electronic sensing from which distance, angle or ro-tational information can be com-puted. For SIKO absolute encoders, absol-ute encoded angle steps are deter-mined instead of the incrementalpulse trains. This technique is use- ful when reference movements forposition determination are eithernot possible or not desirable.Both incremental and absolute en-coders are available in hollow or solid shaft design. Standard inter-faces or individual field bus con-nections with freely programmable parameters are basic features ofthe product.SIKO product know-how in thefield of encoders allows a diversityof types extending from an econ- omical miniature design with lesscomplicated mechanical fittings toextensive, high resolution productsin plastic or robust aluminiumpressure-cast housings. Geared Potentiometers

Incrementalor absolute coded rotation angle detection in variable res- olutions. As compo-nents of the controllers, SIKO rotation encoders regu- late complete movement se- quences of in- dustrial industrial robots that operate fully auto- matically.

For this absolute measuring meth-od, angles or distances are sensedby a combination of a single or multi-turn potentiometer and gear-ing. The position of the potentio-meter provides analogue signals foradjustment movements to the fol-lower electronics such as controlsand measurement indicators.Measurement signal conditionersensure loss-free signal transmission and thereby provide relief fromline losses. For the controlling ofswitching actions, a built-in cam switching mechanism is optionallyavailable.SIKO diversity makes possible indi-vidual measurement acquisition forall applications. 6

Incremental encoders Hollow shafts with Ø 6–42 mm Solid shafts with Ø 5–15 mm Up to 10,000 pulses/revolution Output circuits: PP, LD, OC, OP, OE Absolute encoders Up to protection class IP65 Hollow shafts with Ø 6–20 mm Solid shafts with Ø 6–12 mm Up to 8192 steps/revolution (13 bits), up to 4096 revolutions (12 bits) Interfaces: parallel PP, OC, serial SSI Bus system connection: Inter-Bus-S, Profi-Bus, CAN-Bus Up to protection class IP65 Geared potentiometers Hollow shafts with Ø 8–14 mm Solid shafts with Ø 4–16 mm Potentiometric output: 4–20 mA Protection class IP52