SCA38

SCA38

SCA38

Product catalog summary
Mechanical Specifications
The SCA38 encoder features an aluminum housing, electroplated steel cap, and stainless steel shaft. It weighs approximately 40 grams, with the cable adding 50 grams per meter. The bearing life exceeds 1.9 x 1010 revolutions at rated load, and the maximum shaft speed is 12,000 rpm. The starting torque is less than 0.005 Nm at 25°C, and the shaft can handle axial and radial loads up to 20 N.
Electrical Specifications
The encoder operates on an incremental code with a resolution range of 1 to 7500 pulses per revolution (ppr). It requires a supply voltage between 4.5 Vdc and 30 Vdc, with a maximum current of 35 mA without load. The output format includes two-channel quadrature with an index and optional complementary outputs. The frequency response is up to 200 kHz, and the device is protected against reverse polarity and output short circuits. It 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. The encoder can withstand shocks of 100 G for 11 ms and vibrations from 10-2000 Hz at 10 G. It has an enclosure rating of IP 50, with an optional IP 65 rating.
Connection Options
The encoder offers various cable options, including 8-lead differential and 5-lead standard cables, as well as a 10-lead flat cable with an IDC connector. The standard cable length is 1 meter, with options for 0.5, 1.0, and 2.0 meters.
Ordering Code
The ordering code for the SCA38 encoder includes specifications for pulses per revolution, output type, shaft diameter, shaft length, IP rating, cable length, and connector type. Options include standard and differential outputs, various shaft sizes, and different cable and connector configurations.
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Catalog excerpts

SCA38-1

Automation / Mini Supply Voltage: Output Voltage: Output Current: Frequency Response: Output Format: Phase Sense: 1 to 7500 ppr (pulses per revolution) 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 25mA max. load per output channel 200 kHz max. Housing: Aluminum Cap: Electroplated Steel Shaft: Stainless Steel Encoder: ~ 40 gr (1,41 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: Axial: Radial: 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 Noise Immunity: Mechanical Specifications Gated with Channels A and B high Electrical Protection: Electrical Specifications Shaft Encoder - 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) Environmental Specifications Operating Temp.: Storage Temp.: Enclosure Rating: IP 50 / Nema 5 (approx.) - Flat IP 65 / Nema 4 (approx.) - option 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, not to combine max. Value for all 3 parameters

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SCA38-2

Type SCA38 Output waveform Disk Resolutions (pulses per revolution) Channel tolerance Phase difference tolerance Z channel tolerance Other options on request Pulses per revolution, min. 1 – max. 7.500 Mechanical Dimensions

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SCA38-3

Flat Ribbon Cable with IDC connector

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SCA38-4

Type SCA38 Output Terminations Standard Cable Standard Output Channel A AB BZ ZVsup GND Flat Cable w/ IDC Connector Differential Output Wire Color Green NC Yellow NC Gray NC Brown White Differential Output * Position Pink Gray Green Yellow White Brown Red Blue * Hewlett Packard (HP) compatible Differential Output IP 50 rating CE mark not available 0,5 m, 1 m, or 2 m cable length only Standard Output mm (inches) mm (inches) mm (inches)

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SCA38-5

Type SCA38 Ordering Code Shaft Length Cable Length Cable Takeout See table IP 50 IP 65 Standard Standard – Open Collector NPN Standard – Open Collector PNP Standard Cable Standard is 1 meter Specify length OL 7272 Line Driver Standard - with built-in TSM ** Flat Cable w/ IDC* 0,5 meter 1,0 meter 2,0 meters Side (radial) Back (axial) Flat cable w/ IDC connector * = Only Flat Cable ** Designed specifically for Wind Power applications. See SCA24 COC under Industries – Wind Power – SCA24 for additional conformity standards testing. Other options on request: Please contact Scancon A/S TSM = Transient...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.