Absolute Position Rotary Electric Encoder - DS-37 Datasheet
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ABSOLUTE POSITION ROTARY ELECTRIC ENCODER HARSH ENVIRONMENT The DS-37 is a member of the DS series of Electric Encoders™, based on Netzer Precision proprietary technology. The Electric Encoder™ offers many advantages - some unparalleled • Low profile (8 mm) • Hollow, floating shaft • No bearings or other contacting elements • High resolution and precision • High tolerance to temperature extremes, shock, moisture, EMI, RFI and Magnetic fields • Very low weight DATA SHEET The Electric Encoder™ is unique in being holistic, i.e., its output reading is the averaged outcome of the whole area of the rotor, This feature makes the Electric Encoder™ forgiving to mounting tolerances, mechanical wander etc. The absence of components such as ball bearings, flexible couplers, glass disc, light sources and detectors, along with very low power consumption makes the Electric Encoder™ virtually failure free. The internally shielded, DC operated Electric Encoder™ includes an electric field generator, a field receiver, a sinusoidal shaped dielectric rotor, and processing electronics. The output signals of Electric Encoder™ are analog Sine / Cosine representing the rotation angle. The digital outputs are obtained by further processing - which may be either internal or external to the encoder. • Holistic signal generation • Analog or Digital interfaces The combination of precision, low profile, low weight and high reliability have made Netzer Precision encoders particularly suitable to a wide variety of critical applications including, but not limited to medical equipment and aerospace. Angular resolution Maximum tested static error Extended accuracy static error Maximum operational speed Measurement range Unlimited rotation Power On - Max. operational speed Rotation direction Adjustable CW/CCW* Supply voltage Shielded cable Cable length * Default same direction from bottom side of the encoder Allowable mounting eccentricity Allowable axial mounting tolerance Operating temperature range Rotor inertia Storage temperature Total weight Relative humidity Outer Ø /Inner Ø/ Height DS-37-V02 Shock endurance Material (stator, rotor) Vibration endurance

ABSOLUTE POSITION ROTARY ELECTRIC ENCODER HARSH ENVIRONMENT Serial output Clock frequency Position update rate (Max) SSi / BiSS interface wires color code Encoder Data Blue Yellow Encoder Data BiSS – C Interface is unidirectional serial synchronous protocol for digital data transmission where the Encoder acts as “slave” transmits data according to “Master” clock. The BiSS protocol is designed in B mode and C mode (continuous mode) .The BiSS-C interface as the SSi is based on RS-422 standards. Master Clock Power supply Total number of data bits Clock period Clock frequency Pause time...

ABSOLUTE POSITION ROTARY ELECTRIC ENCODER HARSH ENVIRONMENT DATA SHEET Analog Interface Coarse and Fine channels Electric Encoder™ The DS-37 has two operational modes: a Coarse-mode and a Fine-mode - equivalent to two separate encoders in a common housing. The modes are selectable by a logic C/F command; logic “0” (0V to +0.5V) selects the Coarse-mode, which has 3 Electrical Cycle/Revolution (EC/R) while logic ”1” (+3V to +5V) selects the Fine-mode which has 16 EC/R. Host System COSINE (COARSE) COSINE (FINE) SINE (COARSE) The Coarse-mode outputs need to be read only upon system initiation...

ABSOLUTE POSITION ROTARY ELECTRIC ENCODER HARSH ENVIRONMENT Ordering Code DATA SHEET Digital Output SSi / BiSS-C Outer Diameter Extended Accuracy 0 250mm Flying leads (default) 1 500mm Flying leads Digital: BiSS-C Analog: 1 Vp-p 2 750mm Flying leads C Connector (optional) S Shielded cable 250 mm Resolution Code BIT (Build In Test): optional [] BIT Cable: 30 AWG twisted pair (3) :2 (30 AWG 25/44 finned copper, 0.15 PFE to Ø0.6 ± 0.05 OD). Temperature rating: -60 to +150 Deg C. Braided shield: Thinned copper braided 95% min. coverage. Jacket: 0.45 silicon rubber jacket Ø3.45 ±0.2 OD Gray /...

ABSOLUTE POSITION ROTARY ELECTRIC ENCODER HARSH ENVIRONMENT WARNING Do not use Loctite or other glues containing Cyanoacrylate. We recommend to use 3M glue - Scotch-WeldTM Epoxy Adhesive EC-2216 B/A. DATA SHEET Unless Otherwise Specified Dimensions are in: mm

ABSOLUTE POSITION ROTARY ELECTRIC ENCODER HARSH ENVIRONMENT DATA SHEET A Unless Otherwise Specified Do not use Loctite or other glues containing Cyanoacrylate. We recommend to use 3M glue - Scotch-WeldTM Epoxy Adhesive EC-2216 B/A. Washer DIN9021 1 Shaft End MA-DS37-004 Optional installation Screw DIN 7984 3 kit M4x6 Critical dimensions marked with “*”

ABSOLUTE POSITION ROTARY ELECTRIC ENCODER HARSH ENVIRONMENT Unless Otherwise Specified DATA SHEET SC2SSi, DS-37 external digital module (SSi/BiSS) No Part 1 Description Included