As a reliable Chinese absolute single turn inductive encoder manufacturer, SEA MOTION specializes in single-turn absolute inductive encoders designed for 0–360° full-circle precise positioning. This professional sensing device calculates absolute angular positions through inductive signal coupling, outputting exclusive coding for each angle within one rotation. It requires no homing operation after power restoration and maintains real-time accurate position data, being the ideal choice for single-cycle rotary motion monitoring.
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Model No. |
QD71-23RJD |
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Motor-end resolution |
23bit (compatible 17bit) |
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Encoder type |
Absolute multi-turn (flash / battery) |
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Encoder revolutions |
65536 (16bit) |
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Signal output |
485 / BISS-C / SSI / SPI / UART |
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Install air gap |
0.5mm |
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Working air gap |
0.3mm~0.7mm |
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Max current |
<90mA |
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Working temperature |
-40℃~105℃ |
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Storage temperature |
-50℃~125℃ |
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Rated speed |
≤6000rpm |
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Installation deviation |
Axial<0.2mm, radial<0.1mm |
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Axial float |
≤±0.1mm |
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Baud rate |
2.5Mbps |
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Communication Protocol |
Tamagawa Agreement |
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Absolute accuracy |
±45" |
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Repeatability |
±10" |
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Communication response frequency |
≤16kHz |
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Relative humidity |
≤90%RH,No condensation |
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Vibration |
Maintain an amplitude of 1.5 mm between 10 and 55 Hz; maintain an acceleration of 98 m/s² between 55 and 2000 Hz; test for 2 hours per axis (X, Y, and Z), totaling 6 hours. |
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Shock |
Shock acceleration 980 m/s², 11 ms; 3 shocks per direction, 18 shocks in total. |
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IP protection |
Motor rear housing protection |
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Specification |
Temperature T=25℃ |
|||
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Min |
Rated |
Max |
||
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Power supply voltage |
4.75V |
5V |
5.25V |
|
|
Main power supply power consumption |
--- |
100mA |
-- |
|
|
Differential output level |
High level |
3.5V |
-- |
-- |
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Low level |
-- |
-- |
1.7V |
|
|
Edge change time |
-- |
-- |
100ns |
|
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Insulation resistance |
50MΩ |
-- |
-- |
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The product boasts distinct advantages of high precision and high stability. It achieves ultra-low angle error and high repeatability, supporting high-resolution angle detection. Free from mechanical contact wear, it features a long service life and zero daily maintenance costs. Resistant to electromagnetic interference, high temperature and industrial pollution, it maintains consistent performance in complex working conditions. Its simple structure, easy installation and strong compatibility make it adaptable to various standard motion control systems.
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Terminal location(1~6) |
1 |
2 |
3 |
4 |
5 |
6 |
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RS485 definition |
PE |
NC |
485+ |
485- |
5V |
GND |
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Wire color |
Yellow-green |
- |
Yellow |
Green |
Red |
Black |
Rotor dimensions
stator dimensions
Q D71 - 23 R JD
①②③ ④ ⑤ ⑥
①-Q: DM Q series inductive encoder
②-D: Single encoder
③-71: Outer diameter 71mm
④-23: Encoder resolution: 23-bit
⑤-B: Signal Type: RS485
⑥-JD: Radial (horizontal terminal exit)
The absolute single turn inductive encoder is mainly applied in single-angle positioning and rotary control scenarios. It is widely deployed in industrial rotating platforms, medical equipment rotary components, camera pan-tilt systems, testing instrument rotary modules and small servo rotating mechanisms. It provides precise angle feedback for short-cycle rotary movements, ensuring accurate positioning and stable operation of precision rotary equipment.
Installation Diagram Tools required for installation
Phillips torque screwdriver
1.5mm hex key torque wrench (metric)
4 x M2x5.5 Phillips pan-head screws with flat washers
2 x M3x3 hex socket cup-point set screws
8 x M1.6x6 Phillips countersunk screws
Installation sequence
Rotor Installation:
① Fit the encoder rotor onto the motor shaft and position it correctly;
②Use DP460 adhesive to securely bond the encoder rotor plate to the shaft sleeve.
[Note]:
1) If the rotor height requires adjustment, perform the tightening step only after the adjustment is complete;
2)To prevent the screws from loosening, apply thread-locking adhesive to the threaded holes beforehand or use pre-coated screws.
The recommended tightening torque is 7 ± 0.2 kgf·cm.
Stator Installation:
① Place the encoder stator onto the mounting surface and align the four screw holes;
② Using a Phillips torque screwdriver, drive in the four screw assemblies one by one
(M2x5.5 Phillips pan-head screw + flat washer assembly).
[Note]: To prevent the screws from loosening, apply thread-locking adhesive to the threaded holes beforehand or use pre-coated screws. Recommended tightening torque: 2.8 ± 0.2 kgf·cm.
Address
403 4F Office Building Robot Industry Park No.232 Yuanfeng Road National High Tech Park Kunshan Suzhou Jiangsu China
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