HEIDENHAIN ERN 1331.061-1024 Incremental Rotary Encoder

Technical Specifications

Model：ERN 1331.061-1024 Brand：HEIDENHAIN Product Type: Bearing-integrated incremental optical rotary encoder

Module Feature

Function: HEIDENHAIN ERN 1331.061-1024 incremental rotary encoder with built-in precision bearing. It generates HTL push-pull A/B/Z square wave incremental signals for angular position and rotational speed measurement. 1024 lines per revolution. Adopts 9.25mm 1:10 tapered shaft for direct friction locking installation on servo spindle. Built-in stator anti-rotation coupling can compensate axial installation tolerance up to ±0.5mm. Widely used on heavy horizontal boring mills, machining centers and servo drive systems.

Measuring principle: Incremental optical scanning Incremental lines: 1024 lines per revolution Output Signal: HTL push-pull complementary A/B/Z square wave signals Max scanning frequency: 300 kHz Onboard components: Optical grating disc, scanning assembly, precision bearing, metal housing, 12-pin M23 connector

LED indicators: POWER, SIG, FAULT diagnostic lights

Hardware self-diagnosis

Signal amplitude monitoring, reference mark detection, signal integrity inspection

Programming software

HEIDENHAIN diagnostic software for signal quality verification and mounting adjustment

Electrical Parameters

Supply voltage: 10VDC ~ 30VDC Power consumption: Max 100mA no-load

Mechanical & Structure

Mounting: 1:10 tapered shaft fitted directly onto spindle rotor Protection class: IP40 (housing)

Environmental

Operating temperature: -40℃ ~ +100℃ Ambient humidity: 5~85% non-condensing Certification: CE Status: HEIDENHAIN heavy-duty incremental rotary encoder

System compatibility

Compatibility description: ERN1331 belongs to HEIDENHAIN ERN1300 encoder family, HTL interface. Compatible with mainstream servo drives supporting HTL incremental signals. Suitable for Fives Giddings & Lewis PIC900 CNC heavy boring mill spindle and servo axis.

Function

Function description: ERN 1331.061-1024 is incremental rotary encoder manufactured by HEIDENHAIN. The 1:10 tapered shaft eliminates the need for extra flexible coupling and reduces mechanical backlash. Reference mark Z pulse is required for axis homing after power-up. Stator coupling absorbs axial and angular mounting deviation. Robust mechanical structure resists workshop vibration and temperature variation. It is high precision rotary measuring spare for heavy CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off encoder DC power. Mount ERN1331 encoder onto tapered spindle shaft and lock friction assembly. Connect shielded encoder cable to servo control unit. Restore power, verify LED indicators, run signal test and spindle homing calibration.

Interface

Interface list: M23 12-pin flange connector, DC power and HTL incremental signal terminals,on-board POWER / SIG / FAULT LED indicators for HEIDENHAIN ERN 1331.061-1024.

Diagnostic

Troubleshooting: No encoder signal: Check 10~30V DC supply, cable breakage or connector pin damage. FAULT LED lit: Low signal amplitude, grating contamination or shaft misalignment. Intermittent position jump: Vibration, loose taper locking or bearing wear.

Product Brief

Brief description: ERN 1331.061-1024 HEIDENHAIN bearing-integrated incremental rotary encoder with 1024 lines and HTL output,provides angular position and speed feedback for heavy CNC boring mill spindle and servo motor closed-loop control,rotary encoder spare.