Absolute Optical Rotary Encoder for Motor, 17~24 Bit

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SKU: SUCH-RE-MPN80

$737.50

● Accuracy ±80″ ● Resolution 17~24 bit ● Communication format BISS_C/ SSI ● Shaft diameter Φ30mm/Φ32mm/Φ38mm/Φ40mm

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Overview
Specs
Application
FAQ
Reviews

Overview

The high-precision single turn absolute optical rotary encoder features a unique concentric locking ultra-thin structure and adopts a mounting method that combines flanges and flexible plates. The highest protection rating is available in IP50/IP65. The SUCH single-turn absolute rotary encoder operates on a DC 5V power supply, boasts an accuracy of ±80″, and offers selectable resolutions of 17 bit/19 bit/20 bit/22 bit/24 bit. The ultra-thin absolute rotary encoder structure is robust, vibration- and shock-resistant, and suitable for industrial automation applications such as servo motors and robots.

Feature

Anti-interference: Utilizing an aluminum alloy housing and stainless steel shaft, it is vibration-resistant, shock-resistant, and withstands high/low temperatures, making it suitable for a wide range of applications.
Ultra-thin Design: The absolute rotary encoder sensor features a compact structure, high integration, and simple installation, making it suitable for applications with limited space.
Compact Structure: The concentric locking structure of the shaft, with spring plates and flanges providing equal torque for the X and Y axes, effectively solves the problems of accuracy deviation and bearing damage caused by uneven force distribution due to shaft eccentricity.

Dimension (Unit:mm)

Absolute optical rotary encoder size

R.1 = Radial socket
R.2 = Cable connection

Mounting shaft:

Absolute optical rotary encoder mounting shaft size

Q (shoulder bore diameter)	D (motor shaft diameter)
Φ30	Φ30
Φ32	Φ32
Φ38	Φ38
Φ40	Φ40

H
IP50	Φ25±0.2
IP65	Φ37±0.2

Wiring

Socket pin	Line color	BISS_C single-turn	SSI single-turn	Function
Pin 1	Red	Up	Up	Power positive
Pin 2	Black	Un	Un	Power negative
Pin 3	White	SL-	DATA-	Data signal
Pin 4	White/ Black	SL+	DATA+	Data signal
Pin 5	Green	MA-	CLOCK-	Clock signal
Pin 6	Green/ Black	MA+	CLOCK+	Clock signal
Pin 7	Yellow	-	-	Backup power
Pin 8	Yellow/ Black	-	-	0V

Specs

Basic Parameters
Scanning Principle	Photoelectric
Accuracy	±80″
Response Rotation Speed	6000 min^-1 (normal operation)
RMS Position Signal Noise	±2 @ 18 Bits/r
Communication Format	BISS_C/ SSI
Communication Clock Frequency	≤10MHz (BISS) or ≤5MHz (SSI)
Resolution	17~24 bit
Startup Time	Typical: 13ms
Absolute Position Sampling Period	≤75ns
Permissible Speed	≤32200 r/min
Electrical Connection	Radial socket/ cable connection
Cable	Twisted pair
Cable Length	2m (Please contact us if other lengths are required)
Internal Single-Turn Position Update Rate	15000kHz
Temperature Alarm Limits	-20℃~95℃
Mechanical Parameters
Mechanical Connection	With shaft-encircling locking, a flexible spring plate fixed connection
Shaft Diameter	Φ30mm/Φ32mm/Φ38mm/Φ40mm (through)
Shaft Material	Stainless steel
Starting Torque	IP50: Below 60*10^-3 N.m IP65: Below 0.5 N.m
Inertial Torque	IP50: Below 8010^-6 kg.m² IP65: Below 80010^-6 kg.m²
Allowable Shaft Force	Radial 30N, axial 20N
Maximum Allowable Speed	IP50≤3000rpm, IP65≤1500rpm
Housing Material	Aluminum alloy
Weight	IP50: Approx. 360g IP65: Approx. 400g
Environmental Parameters
Ambient Temperature	Operating: -20~+95℃ Storage: -25~+95℃
Ambient Humidity	Operating and storage: 35~85%RH (non-condensing)
Vibration	Amplitude 1.52mm, 5~55Hz, 2 hours in each of the three axes
Shock	980m/s², 11ms, 3 times in each of the X, Y, and Z directions
Protection Rating	IP50 (radial socket)/IP65
Electrical Parameters
Power Supply Voltage	DC 5V
Operating Current	120mA
Backup Voltage	3.6V
Backup Current	35uA
BISS Communication Clock Frequency	10MHz
SSI Communication Clock Frequency	5.0MHz
Operating Ambient Temperature	-20℃~+95℃

Application

CNC Machine Tool

Robot

Motor

FAQ

Q1: What is an absolute optical encoder?❯

An absolute optical encoder is a photoelectric sensor that can directly output a digital code that uniquely corresponds to the mechanical position in order to accurately measure the absolute position. Its core advantage is that the position information is not lost after power failure and there is no need for zero-return calibration.

Q2: What are optical encoders commonly used to measure?❯

Optical encoders are commonly used to measure angular position, rotational speed, direction of rotation, and in some cases linear displacement. They are widely used in motors, CNC machines, robotics, automation equipment, and precision motion control systems.

Q3: What determines the resolution of an optical encoder?❯

The resolution of an optical encoder is mainly determined by the number of divisions on the optical disk—that is, the number of code tracks or pulses per revolution. More divisions mean higher resolution.

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Absolute Optical Rotary Encoder for Motor, 17~24 Bit

Feature

Dimension (Unit:mm)

Wiring

CNC Machine Tool

Robot

Motor

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