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SROA13\SROA20 Series

Summary

Technical specifications

Application

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With high accuracy, compact size, and specially developed for small base motors, the SROA20/SROA13 ultra-small diameter encoders are ideal for industries such as servo, medical, and consumer electronics (3C).

Product characteristics

Repeatability < ±8 arc seconds;
RS485 interface, compatible with multiple communication protocols;
Bidirectional asynchronous serial communication, 17-bit per revolution;
Rigorous EMC testing to meet harsh electromagnetic environment conditions;
Suitable for motors with 14.5-30 base.

Product advantages

Optical principle for higher accuracy;
Outer diameter of 12.5mm, compact size;
Easy to install, custom-designed for small base motors.

Technical specifications

System

Resolution	Single-turn: 17bit
Communication Specification	RS485
Baud Rate	2.5Mbps
Signal Format	Serial Communication Protocol

Electrical

Supply Voltage	5 V ± 5%
Main power supply current consumption (typical)	140mA
Differential Output Level	High level≥3.5V; Low level≤1.7V
Insulation Resistance	50MΩ
Edge Change Time	100ns

Environment

EMC Features	IEC61000-4
Operating Temperature	-10℃~105℃
Humidity	≤90%(40℃/21d, based on EN60068-2-78); No Condensing
IP Rating	—（Motor Rear Case Protection）
Shock	Impact acceleration 980m/s2 ，11ms； 3 times per direction, total 18 times
Vibration	The amplitude is 1.5mm between 10 ~ 55Hz; Acceleration of 98m/s2 between 55~2000 Hz ; 2 hours per axial (XYZ)