Miniature encoders
R22i optical incremental encoders provide position feedback with optional commutation signals for brushless motors.
Features & benefits
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22 mm diameter by 15 mm long; fits motor shafts to 4 mm
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Optional 3-phase commutation outputs available for 4, 6, 8, and 10-pole brushless motors
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Resolutions of 100 to 1,024 line counts available with A, B, and Z reference channels
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Operates from -30° to 110° C
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Optional bolt patterns available
Renco Encoders Inc.
(805) 968-1525
www.renco.com
Circle 151
Extreme-service encoders
RLS miniature magnetic rotary encoders include a small diametrically polarized magnet and custom ASIC, which contains an array of Hall effect sensors that generate a voltage when exposed to a magnetic flux field.
Features & benefits
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Withstand shock, vibration, pressure, temperature extremes, high speed, and immersion
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Resolution to 8,192 counts per revolution, speeds to more than 30,000 rpm, and measurement accuracy to 0.5°
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Temperature range from -40° to 125° C
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Available in 7 to 13-bit models with absolute, incremental, or linear output; 5 or 24 V supply voltage
Renishaw Inc.
(847) 286-9953
www.renishaw.com
Circle 152
Dual output encoders
HS35 encoders are designed for use as winch-turn counters in the drawworks systems of oil rigs.
Features & benefits
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Hard-anodized metal housing, sealed connector, IS rating, dual bearings, and shaft seals for NEMA 4 and 13 (IP65) ratings
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Supply simultaneous position feedback to two separate systems from a single encoder
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Outputs can have different resolutions with use of interpolation; saves cost and space of a second encoder
BEI Industrial Encoders
(800) ENCODER
www.beiied.com
Circle 153
Economical encoders
HC20 commutation encoders are priced 40% lower than previous models for use with brushless servo and step motors.
Features & benefits
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Direct-read non-interpolated technology stems from a custom phased array ASIC
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5 to 26 Vdc operating range; rated to 120° C
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Capable of up to 250 ppr; available with commutation tracks for 4, 6, or 8-pole brushless motors
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50 mm diameter; 36 mm mounting depth
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Suited for NEMA 23 and 34 size brushless motors
Dynapar Corp.
(800) 873-8731
www.dynapar.com
Circle 154