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SCA24

Product catalog summary

Mechanical Specifications
The SCA24 encoder features a brass housing and an electroplated steel cap, with an option for aluminum for flat cable configurations. The shaft is made of stainless steel, and the encoder weighs approximately 35 grams, with the cable adding 50 grams per meter. It supports a shaft speed of up to 12,000 rpm and a starting torque of less than 0.005 Nm at 25°C. The encoder can handle axial and radial shaft loads of up to 20 N.

Electrical Specifications
The encoder operates on an incremental code with a resolution range from 1 to 7500 pulses per revolution (ppr). It requires a supply voltage between 4.5 Vdc and 30 Vdc, with a maximum output current of 25 mA per channel. The frequency response is up to 200 kHz, and it features two-channel quadrature output with an optional index channel. The encoder is protected against reverse polarity and output short circuits and complies with EMC standards EN61000-6-2:2005 and EN61000-6-3:2007.

Environmental Specifications
The operating and storage temperature range is -40°C to +85°C. It can withstand shocks of 100 G for 11 ms and vibrations from 10 to 2000 Hz at 10 G. The enclosure has an IP rating of 64, with an option for IP 50 for flat cable configurations.

Connection Options
The encoder offers various cable options, including an 8-lead differential cable and a 5-lead standard cable, both shielded and twisted pairs. A 10-lead flat cable with an IDC connector is also available.

Output Waveform and Resolutions
The encoder supports multiple disk resolutions ranging from 1 to 7500 pulses per revolution, with specific tolerances for channel and phase differences.

Ordering Code
The ordering code for the SCA24 encoder includes options for output type, IP rating, connector type, shaft diameter and length, cable takeout, and cable length. Additional options are available upon request, and specific configurations are designed for wind power applications.

Catalog excerpts

Automation / Mini Type SCA24 SCASCADSSCA SCA24ANAN Shaft Encoder - Shaft: ø 2 mm to ø 1/4 inch Resolution up to 7500 ppr Enclosure IP Rating 64 (IP 50 for IDC connector option) Output Voltage: Output Current: Frequency Response: 4,5 Vdc min. to 30 Vdc max. (35 mA max. - no load) Low: 500 mV max. at 10 mA High: (Vin – 0,6) at -10 mA (Vin – 1,3) at -25 mA 25 mA max. load per output channel Phase Sense: Index: Accuracy: Electrical Protection: Noise Immunity: Housing: Brass Cap: Electroplated Steel Aluminum (flat cable option) Shaft: Stainless Steel Encoder: ~ 35 gr (1,23 oz) Cable: 50 gr / meter (1,76 oz / meter) Bearing Life: > 1,9 x 1010 revolutions at rated load Shaft Speed: Starting Torque: Mass Moment of Inertia: Shaft Loads: Two channel (A, B) quadrature with Index (Z) and optional complementary (A-, B-, Z-) outputs A leads B clockwise (CW) from the mounting end of the encoder Output Format: Mechanical Specifications Electrical Specifications Supply Voltage: Environmental Specifications Operating Temp.: Gated with Channels A and B high Storage Temp.: ASIC Push pull and Differential OL7272 Push-pull and Differential Line Driver 26C31 Differential Line Driver 5V output (with 5V input) Reverse polarity and output short circuit protected Tested to EN61000-6-2 : 2005 (industrial environments) Electromagnetic compatibility (EMC) and EN 61000-6-3 : 2007 (residential, commercial, and lightindustrial environments) for Electromagnetic compatibility (EMC) Enclosure Rating: IP 64 / Nema 4 (approx.) IP 50 / Nema 5 (approx.) - flat cable Connection Options Cable: 8 leads (0,05 mm2, 30 AWG) - Differential 5 leads (0,14 mm2, 26 AWG) - Standard twisted pairs; shielded Flat Cable: 10 lead flat cable with IDC connector ** = It is recommended user not to combine max. values for all 3 parameter

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Type SCA24 Output waveform Disk Resolutions (pulses per revolution) Other options on request Pulses per revolution, min. 1 – max. 7.500 Channel tolerance Phase difference tolerance Z channel tolerance Mechanical Dimensions Tolerances according to ISO 2768 f

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Industrial Encoders Flat Ribbon Cable with IDC connector

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Type SCA24 Output Terminations Flat Cable w/ IDC Connector Standard Cable Standard Output Channel A AB BZ ZVsup GND Differential Output Wire Color Green NC Yellow NC Gray NC Brown White Differential Output * Position Pink Gray Green Yellow White Brown Red Blue IP 50 rating CE mark not available 0,5 m, 1 m, or 2 m cable length only * Hewlett Packard (HP) compatible

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Type SCA24 Ordering Code Shaft Length Cable Length Cable Takeout ** = Only flat cable Standard Standard – Open Collector NPN Standard – Open Collector PNP Standard Cable OL 7272 Line Driver Standard - with built-in TSM *** 2.0 mm x 13mm 4.0 mm x 5 mm * 4.0 mm x 9 mm * 4.0 mm x 15 mm * 4.0 mm x 20 mm * 4.0 mm x 25 mm * 4.0 mm x 35 mm * 5.0 mm x 10 mm w/ flat only 6.0 mm x 10 mm 6.0 mm x 14 mm * 1/8 inch x 3/8 inch 1/4 inch x 10 mm w/ flat only 1/4 inch x 20 mm w/ flat only Flat Cable w/ IDC 0,5 meter 1,0 meter 2,0 meters Standard Cable Standard is 1 meter Specify length No cable Flat Cable (connector...

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