HEIDENHAIN Interpolation Unit

Technical Specifications

Model： ID.Nr. 365 340-04

Brand： HEIDENHAIN

Product Type: Standalone interpolation and digitizing unit for incremental linear and rotary encoders

Module Feature:

Function: HEIDENHAIN 365 340-04 interpolation unit. It receives weak µApp sine/cosine current signals from HEIDENHAIN incremental encoders, performs hardware interpolation, and outputs differential TTL A/B/Z square wave pulses for CNC controller. Used for feed axis and spindle closed-loop position measurement on heavy horizontal boring mills and large machining centers.

Input Signal: 7~16 µApp sine/cosine incremental current signal Output Signal: Differential TTL A/B/Z square wave pulses Onboard components: Input preamplifier, interpolation logic circuit, pulse shaping circuit, fault detection circuit, metal housing, M23 flange connectors

LED indicators: POWER, SIG, FAULT diagnostic lights

Hardware self-diagnosis: Encoder signal amplitude monitoring, input signal loss detection

Programming software: No programming required; interpolation factor configurable via DIP switch

Electrical Parameters

Supply voltage: 5VDC ±5%

Power consumption: Max 2.9W

Mechanical & Structure:

Mounting: Cabinet wall mounting Protection class: IP64 (metal housing)

Environmental:

Operating temperature: 0℃ ~ +70℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: HEIDENHAIN legacy interpolation digitizing unit

System compatibility

Compatibility description: 365 340-04 belongs to HEIDENHAIN EXE-style interpolation family. Compatible with HEIDENHAIN incremental encoders with µApp output. Works with Fives Giddings & Lewis PIC900 CNC system for heavy boring mill axis control.

Function

Function description: 365 340-04 is interpolation electronics manufactured by HEIDENHAIN. It amplifies low-level sine/cosine signals from linear scales or rotary encoders and increases effective resolution through hardware interpolation, then converts analog signals into standard differential TTL pulses sent to CNC axis board. Metal housing protects internal circuits from cabinet vibration and electromagnetic interference. It is legacy encoder signal processing spare for heavy CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off 5VDC control power. Mount interpolation unit on cabinet plate. Connect encoder cable to M23 input connector, and TTL pulse cable to CNC axis control board. Set DIP switch for required interpolation multiple. Restore power, verify POWER and SIG LED indicators, run encoder diagnostic and check position counting.

Interface

Interface list: M23 9-pin encoder input connector, M23 12-pin TTL pulse output connector,5VDC power terminal,on-board POWER / SIG / FAULT LED indicators for HEIDENHAIN 365 340-04.

Diagnostic

Troubleshooting: No pulse output: Check 5VDC power supply, encoder cable breakage or connector pin damage. FAULT LED lit: Low encoder signal amplitude, optical contamination on encoder read head or wiring fault. Axis position jump: Incorrect DIP interpolation setting, electromagnetic noise or aging electronic components.

Product Brief

Brief description: 365 340-04 is HEIDENHAIN legacy interpolation digitizing unit,converts µApp sine/cosine incremental encoder signals into differential TTL pulses for heavy CNC boring mill closed-loop axis measurement,encoder signal processing spare.