HEIDENHAIN ROQ424 Absolute Rotary Encoder

Technical Specifications

Model： ROQ424 512 27S17-E0, ID.Nr.631 702-21

Brand： HEIDENHAIN

Product Type: Bearing-integrated hollow shaft absolute rotary encoder for spindle / rotary swivel axis

Module Feature:

Function: HEIDENHAIN ROQ424 absolute rotary encoder. It measures high precision absolute angular position and rotational speed, communicates via EnDat01 serial interface. Absolute position data can be read immediately after power-up without homing operation. Hollow shaft design allows direct mounting on machine spindle. Used for spindle positioning and rotary table closed-loop control on heavy horizontal boring mills and 5-axis machining centers.

Measuring principle: Absolute optical scanning Resolution: 512 singleturn Interface: EnDat 01 Hollow shaft with integrated stator coupling Onboard components: Absolute grating ring, optical scanning assembly, precision bearing, metal housing, M23 flange connector

LED indicators: POWER, COM, FAULT diagnostic lights

Hardware self-diagnosis: Encoder temperature monitoring, signal amplitude monitoring, EnDat communication diagnosis

Programming software: HEIDENHAIN diagnostic software for encoder status reading and parameter check

Electrical Parameters

Supply voltage: 3.6V ~14V DC

Power consumption: Max 3.0W

Mechanical & Structure:

Mounting: Hollow shaft fitted directly onto rotary spindle, integrated stator coupling Protection class: IP64 (housing)

Environmental:

Operating temperature: 0℃ ~ +70℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: HEIDENHAIN absolute rotary encoder

System compatibility

Compatibility description: ROQ424 belongs to HEIDENHAIN ROQ series absolute encoder family, EnDat01 interface. Compatible with HEIDENHAIN CC series control units and Fives Giddings & Lewis PIC900 CNC system for heavy boring mill spindle and rotary axis.

Function

Function description: ROQ424 is absolute rotary encoder manufactured by HEIDENHAIN. Hollow through shaft and integrated stator coupling enable direct installation on spindle shaft, eliminating extra flexible coupling and reducing mechanical backlash. It outputs absolute angular position through EnDat serial bus. No reference homing required after power restart. Rugged metal housing protects internal optical components from vibration, coolant mist and metal chips. It is high precision spindle position measuring spare for heavy CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off encoder DC supply power. Install encoder onto hollow spindle shaft, secure axial and radial clamping. Connect shielded EnDat encoder cable to servo control unit. Restore power, verify POWER and COM LED indicators, run encoder diagnostic and test spindle position reading.

Interface

Interface list: M23 multi-pin flange connector, DC power and EnDat signal terminals,on-board POWER / COM / FAULT LED indicators for HEIDENHAIN ROQ424 631 702-21.

Diagnostic

Troubleshooting: No encoder communication: Check supply voltage, cable breakage or connector pin damage. FAULT LED lit: Low optical signal, communication timeout, shaft mounting misalignment or over-temperature. Spindle position deviation: Shaft runout, mechanical vibration or optical window contamination.

Product Brief

Brief description: ROQ424 512 27S17-E0 ID 631 702-21 HEIDENHAIN hollow-shaft absolute rotary encoder with EnDat01 interface,provides absolute spindle angular position for heavy CNC boring mill closed-loop control,spindle absolute encoder spare.