Encoders. Selection chart

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Adrian Simmons
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Selection chart Page Incremental encoders with solid shat 7 Incremental encoders with hollow shat 7 Absolute multiturn encoders (Proibus) 7 Absolute

1 Selection chart Page Incremental encoders with solid shat 7 Incremental encoders with hollow shat 7 Absolute multiturn encoders (Proibus) 7 Absolute singleturn - encoders (CANopen) 7 Absolute multiturn - encoders (CANopen) 8 Accessories 8 Scale drawings - CAD download:

Robust designs. Industrial standard housings. or axial and radial use. Designs with integrated bus interace. Hollow shat encoder or direct mounting on actuators.

Linear measurement is also possible in conjunction with rack and pinion or measuring wheels. Encoders use the wear-ree photoelectric detection.

Incremental encoders Incremental encoders generate a precisely deined number o pulses per revolution. They are a measure o the angular or linear distance moved.

2 Robust designs. Industrial standard housings. or axial and radial use. Designs with integrated bus interace. Hollow shat encoder or direct mounting on actuators. Encoders In many manuacturing and production processes they are indispensable as reliable transducers to ensure precise positioning. They convert rotary movement into digital signals. Linear measurement is also possible in conjunction with rack and pinion or measuring wheels. Encoders use the wear-ree photoelectric detection. A pulse disc irmly attached to the shat ensures this detection. Encoders are basically divided into two types: incremental and absolute encoders. Incremental encoders Incremental encoders generate a precisely deined number o pulses per revolution. They are a measure o the angular or linear distance moved. The coded disc is divided into separate segments which are alternately transparent or opaque. An LED emits a parallel-orientated light beam which illuminates all segments o the coded disc. Photo elements receive the modulated light and convert it into two sinusoidal signals. Digitalisation electronics ampliy the signals and shape them into square-wave pulse trains which are generated via the line driver in the output. The phase dierence between signal A and B, which are phase-shited by 90 degrees, allows evaluation o the direction o rotation. Absolute encoders Absolute encoders provide an absolute numerical value or each angular position. This code value is available immediately ater power is applied. This absolute value makes a reerence procedure like the one required or the incremental encoder unnecessary. Absolute encoders are used wherever angular positions have to be allocated to a certain value and where the detection o the present position is absolutely necessary in the case o a power ailure. Singleturn and multiturn Singleturn encoders divide a mechanical revolution (0 to 0 degrees) into a certain number o measuring steps. The measuring values are repeated ater one revolution. The maximum resolution is 892. Multiturn encoders, however, do not only detect angular positions but also distinguish between multiple revolutions. Linear measurement by means o a counter: rotary movement is converted into digital signals. Hollow shat encoder or direct mounting on the axis.

3 Incremental encoders with solid shat Shat 2 m Output TTL output 20 ma radial / axially RB05 2 m Output HTL-output 50 ma, short-circuit protected < min radial / axially RB radial / axially RB radial / axially RB029 2 m Output TTL output 20 ma radial / axially 2 RU radial / axially 2 RU025 Incremental encoders with hollow shat Shat m Output HTL-output 50 ma, short-circuit protected < min H radial / axially RO H radial / axially RO45 Absolute multiturn encoders (Proibus) Shat Terminals Output Proibus data interace 25 bits RM005 Absolute singleturn - encoders (CANopen) Shat Terminals Output CANopen interace bits RN700 bits RN

4 Absolute multiturn - encoders (CANopen) Shat Terminals Output CANopen interace 25 bits RM bits RM7004 Accessories Type Description Angle bracket or encoders or type RB, RC, RU, RN, RM Housing materials: aluminium black anodised E00 Angle bracket or encoders or type RM, RMU, RN, RU Housing materials: aluminium black anodised E004 Flexible coupling with clamp connection [KV] Ø mm / Ø mm Housing materials: aluminium E004 Flexible coupling with adjusting screw connection [SV] Ø mm / Ø mm Housing materials: aluminium E00 Flexible coupling with adjusting screw connection [SV] Ø mm / Ø 0 mm Housing materials: aluminium E0028 Scale drawings - CAD download: , ,7 ±0, h7 4,5 20 : reerence mark, 2: M 5 mm deep : reerence mark, 2: M4 5 mm deep 8

5 Scale drawings - CAD download: ,2 ±0,5 4,5 42,2 2 H , TX h7 8 : M4 5 mm deep 20 8 : M4 5 mm deep 9

6 20

Incremental encoders Redundant sensing, isolated blind hollow shaft ø mm, cone shaft ø17 mm pulses per revolution

Incremental encoders Redundant sensing, isolated blind hollow shaft ø mm, cone shaft ø17 mm pulses per revolution Features Robust, compact housing Two bearings with large distance, one at each end High shaft load up to 450 N Shock resistant up to 250 g Shaft insulation up to 2.8 kv Highest operating speed 10000 rpm