Control Techniques 095U3D305BACAA Rotary Encoder Unit

Module Feature

095U3D305BACAA (part number 100190) is a 305 PPR high resolution optical rotary encoder manufactured by Control Techniques,specially designed for closed-loop position feedback of servo motors. It adopts non-contact optical grating sensing to convert mechanical rotary motion into digital quadrature pulse signals. RS-422 differential A/B/Z phase output delivers strong anti-EMI performance and stable signal transmission over long cables inside servo cabinets. The metal shielding housing isolates interference generated by high-power drive circuits. Built-in BIT diagnostic circuit continuously monitors the power rail and optical signal path integrity; fault codes can be retrieved via Control Techniques Unidrive Tools software. Reinforced bearing assembly offers excellent shock and vibration resistance,widely applied in industrial servo axis control,automation test bench and hardware-in-loop real-time simulation chassis.

Working principle

When the servo motor shaft rotates, the optical grating disc rotates synchronously. Infrared LED light passes through grating slits and is captured by photodiode array,producing A/B quadrature pulses for speed and rotation direction calculation and Z index pulse for origin homing. RS-422 differential line driver transmits feedback signals to the Control Techniques servo drive feedback port. BIT circuit detects LED brightness and supply voltage to identify hardware faults. Metal shield housing blocks electromagnetic noise coupling from high-current power wiring.

Onboard components

Infrared LED light source,305 PPR precision optical grating disc,photodiode receiver array,RS-422 differential line driver,metal shielding enclosure,precision shaft bearing assembly,multi-pin feedback connector,BIT power and optical signal detection hardware.

LED indicators

LED indicators for power supply status and BIT fault alarm.

Hardware self-diagnosis

Visual inspection of housing,shaft and connector;BIT power supply and optical signal amplitude test;A/B/Z phase waveform verification;shaft rotation smoothness check.

Programming software

Control Techniques Unidrive Tools software,supports encoder parameter setup,position signal monitoring and BIT fault log reading.

Electrical & Process Parameters

Model:095U3D305BACAA 100190 Brand: Control Techniques Device type: Servo optical quadrature rotary encoder Resolution:305 PPR Power supply:5 V DC Signal output:RS-422 differential A/B/Z quadrature signal Shaft type:Solid shaft Control mode:Non-contact optical position measurement,differential signal transmission,metal EMI shielding,built-in BIT health monitoring Cooling: Natural convection cooling Protection: Reverse polarity protection,metal housing mechanical protection Mounting: Flexible coupling connected to servo motor shaft Protection class: Metal sealed housing

Mechanical & Structure

Mounting: Servo motor shaft flexible coupling mounting Protection class: Metal shield housing

Environmental

Operating temperature:-40℃ ~ +85℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:20~80% non-condensing Certification: CE compliant Status: Control Techniques 305 PPR optical quadrature encoder for servo closed-loop feedback

Installation

Follow ESD safety procedure before handling.Align encoder shaft with servo motor shaft and install flexible coupling.Tighten coupling screws properly,avoid excessive radial or axial load.Connect 5 V DC power and differential A/B/Z feedback cable to Control Techniques servo drive feedback port.Power on system,open Unidrive Tools,run BIT diagnostic before commissioning.

Interface

Multi-pin feedback connector for 5 V power,ground and A/B/Z differential quadrature signals.

Diagnostic

No pulse output: 5 V power loss,loose connector or failed LED source. Reverse rotation direction: A and B phase wires swapped. Missing Z reference pulse: grating disc contamination or Z channel circuit damage. Jittery position reading: insufficient shielding or ground loop noise.

Product Brief

Control Techniques 095U3D305BACAA (100190) servo optical rotary encoder,305 PPR resolution,RS-422 differential A/B/Z quadrature output,metal EMI shielding and built-in BIT self-check,provides reliable high-precision shaft position feedback for Control Techniques servo drives and hardware-in-loop simulation systems.