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Scancon
Type SCA18

Type SCA18

Product catalog summary

Mechanical Specifications
The SCA18 encoder features a housing made of aluminum or brass, with an aluminum cap and brass shaft. It weighs approximately 15 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 10 N.

Electrical Specifications
The encoder uses an incremental code with a resolution range from 100 to 5000 pulses per revolution (ppr). It operates on 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 the output format includes two-channel quadrature with an index and optional complementary outputs. It 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 temperature range is -20°C to +70°C, with a storage temperature range of -20°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 and can operate in up to 98% relative humidity without condensation.

Connection Options
The encoder offers an 8-lead twisted pair shielded cable or a 10-lead flat cable with an IDC connector. The standard cable length options are 0.5 m, 1 m, or 2 m.

Ordering Code
The ordering code for the SCA18 encoder includes specifications for pulses per revolution, output type, shaft diameter, shaft length, IP rating, cable length, and connector type. Additional options are available upon request.

Catalog excerpts

Automation / Micro Resolution: Supply Voltage: Electrical Specifications Shaft Encoder - Mechanical Specifications Incremental 100 to 5000 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 25 mA max. load per output channel Housing: Aluminum / Brass Cap: Aluminum Shaft: Brass Encoder: ~ 15 gr (0,53 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: 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 Shaft Loads: Operating Temp.: Gated with Channels A and B high Storage Temp.: Reverse polarity and output short circuit protected Electrical Protection: Enclosure Rating: IP 50 / Nema 5 (approx.) - flat cable Noise Immunity: 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) Output Voltage: Output Current: Frequency Response: Output Format: Phase Sense: Environmental Specifications Connection Options Cable: 8 leads (0,05 mm2, 30 AWG) twisted pairs; shielded Flat Cable: 10 lead flat cable with IDC connector **= It is recommended, not to combine max. Value for all 3 parameters

Open the catalog to page 1

Type SCA18 Output waveform Disk Resolutions (pulses per revolution) Other options on request Pulses per revolution, min. 1 – max. 5.000 Channel tolerance Phase difference tolerance Z channel tolerance Mechanical Dimensions Tolorances according to ISO 2768 f

Open the catalog to page 2

Type SCA18 Tolorances according to ISO 2768 f Output Terminations Flat Cable w/ IDC Connector Standard Cable Differential Output* Differential Output Inverted Output** Wire Color Pink Gray Green Yellow White Brown Red Blue * Hewlett Packard (HP) compatible ** ID # required for ordering IP 50 rating CE mark not available 0,5 m, 1 m, or 2 m cable length only

Open the catalog to page 3

Type SCA18 Ordering Code Shaft IP Length Rating Cable Length Cable Takeout Differential Inverted (Flat cable option only) Flat Cable w/ IDC 0,5 meter 1,0 meter 2,0 meters Standard Cable Standard is 1 meter Specify length Side (radial) Back (axial) Flat cable w/ IDC connector IDC on flat cable No connector Other options on request: Please contact Scancon A/S See Accessories for drawings

Open the catalog to page 4

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