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DS 247 custom rotary encoder - Netzer Precision Motion Sensors


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DS-247-128
Absolute Position, Rotary Electric Encoder™
The DS-247-128 is members ofthe DS series, based on Netzer Precision Electric Encoder™ technology. This state-of-the-art encoder technology offers many features, some unparalleled:
• Hollow floating shaft
• No bearing or other contact
• High precision.
• High tolerance to temperature, shock, moisture, EMI, RFI and magnetic fields.
• Multiple protocol interface
• Continues output
Demanding application suited to the DS-247-128 include: Aerospace, medical, instrumentation, automation, etc.
(i)
The holistic structure of the Electric Encoder™ provides generous mounting tolerance, thus obviating the need for internal ball bearings.
The absence of ball bearings and components such as flexible couplers, glass disc, light sources and detectors, along with very low power consumption makes the DS-247 encoder virtually failure free.
The internally shielded, DC operated DS-247 includes an electric field generator, a field receiver, a sinusoidal-shaped dielectric rotor, and processing electronics.
(2)
Allowable mounting eccentricity
±0.2 mm
(2)
Allowable rotor axial motion
±0.1 mm
Rotor inertia
158.434 gr-mm2
Total weight
665 gr
Outer diameter / Inner diameter /
247.6 / 170.2 / 18 mm
profile
Material (stator, rotor)
Aluminum , llltem™
Electrical
Supply voltage
(3)
+4.6to +5.5V
Supply current
(4)
~ 10 mA
Maximum load current
5 mA
Output resistance
<1Q
Servo bandwidth
DC to 1 kHz
6 pins connector +
Interconnection
25 cm Teflon-coated,
AWG-32 wires
Environment
(5)
EMC
IEC6100-6-2, IEC6100-6-4
Operating temperature range
(6)
-55°Cto+125 °C
Relative humidity
<98 % non condensing
Shock endurance
IEC 60068-2-27 ; 100gfor 11 ms
Vibration endurance
IEC 60068-2-6; 20g 10-2000 Hz
(7)
Protection
IP40

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