HEIDENHAIN LC185 Linear Encoder

Technical Specifications

Model： LC185

Brand： HEIDENHAIN

Product Type: Sealed absolute linear encoder for CNC machine tool position detection

Module Feature:

Function: HEIDENHAIN LC185 sealed absolute linear encoder. It measures linear axis absolute position directly upon power-up without reference homing. Transmits position data to CNC controller, used for closed-loop position feedback on heavy horizontal boring mills and large machining centers.

Measuring principle: Absolute scanning Output Interface: EnDat 2.2 Onboard components: Glass scale substrate, scanning head, sealing lip, built-in signal processing circuit, cable assembly

LED indicators: POWER, LINK, FAULT diagnostic lights

Hardware self-diagnosis: Signal amplitude monitoring, communication link check, internal temperature self-test

Programming software: HEIDENHAIN proprietary diagnostic software for encoder status reading and parameter verification

Electrical Parameters

Supply voltage: 5VDC

Power consumption: Max 2.5W

Mechanical & Structure:

Mounting: Scale rail fixed on machine bed, scanning head on slide carriage Protection class: IP67 (scale housing)

Environmental:

Operating temperature: 0℃ ~ +50℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy sealed absolute linear encoder

System compatibility

Compatibility description: LC185 belongs to HEIDENHAIN LC series linear encoder family. Equipped with EnDat 2.2 interface, compatible with many CNC controllers including Fives Giddings & Lewis PIC900 system. Widely applied on heavy CNC boring mills.

Function

Function description: LC185 is sealed absolute linear encoder manufactured by HEIDENHAIN. The absolute code engraved on glass scale enables reading of exact position immediately after power on, eliminating the need for axis reference homing. Rubber lip seal protects internal glass scale and scanning unit against coolant, chips and workshop dust. It provides high-precision linear position feedback for CNC closed-loop axis control. It is legacy linear position measuring spare for heavy CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off CNC and encoder 5VDC power. Mount scale rail parallel to machine travel axis, install scanning head on slide. Adjust gap and parallelism between scanning head and scale. Connect shielded EnDat cable to CNC control unit. Restore power, verify POWER and LINK LED indicators, run encoder diagnostic and check position reading.

Interface

Interface list: EnDat 2.2 signal cable connector, 5VDC power terminal,on-board POWER / LINK / FAULT LED indicators for HEIDENHAIN LC185.

Diagnostic

Troubleshooting: No position reading: Check 5VDC power supply, cable breakage or connector pin damage. FAULT LED lit: Low signal amplitude, contamination on scale surface or communication failure. Position jump error: Scale surface chip / coolant contamination, scanning head misalignment or cable shielding damage.

Product Brief

Brief description: LC185 is HEIDENHAIN legacy sealed absolute linear encoder with EnDat2.2 interface,provides high precision linear position feedback for heavy CNC boring mill axis closed loop control,discontinued CNC linear scale spare.