Description

Product Overview

MC422 ID‑359630‑01 is the main computing unit (MC module) for HEIDENHAIN iTNC 530 CNC system, serving as core motion‑control hardware for high‑end milling and 5‑axis machining centres. Equipped with AMD K6‑2 266 MHz processor, 64 MB onboard memory and integrated hard disk, this module executes CNC trajectory calculation, PLC logic processing and closed‑loop position control. It supports up to 5 axes of 1 Vss / EnDat encoder feedback, handling multi‑axis interpolation for complex 3D and 5‑axis machining tasks.

Many legacy machine‑tool retrofit projects face ageing control hardware and limited spare‑part availability. MC422 ID‑359630‑01 addresses this pain‑point by integrating position measurement interfaces, analog drive outputs, temperature acquisition and multi‑port communication within one compact unit. It directly drives XGA‑TFT operator display, supports PT100 temperature sampling for spindle thermal monitoring, and provides Ethernet, RS232, RS422, USB and PS/2 interfaces for program upload/download, peripheral connection and networked workshop communication. As drop‑in replacement spare for existing iTNC 530 racks, it preserves original machine wiring, PLC programs and mechanical setup without major mechanical modification.

Technical Specifications

Parameter name	Parameter value
Product model	MC422 359630‑01
Manufacturer	HEIDENHAIN
Product type	iTNC 530 Main Computer Module (MC Unit)
Main processor	AMD K6‑2, 266 MHz
Working memory	64 MB
Position‑feedback channels	5 × 1 Vss / EnDat encoder interface
Analog outputs	3 × ±10 V analog drive command
Temperature input	3 × PT100
On‑board storage	Integrated hard‑disk drive
Display interface	TFT‑XGA 1024×768 colour screen
Communication ports	RS232, RS422, Ethernet, USB, PS/2
Integrated function	CNC interpreter, onboard PLC runtime
Operating temperature	0 °C ~ +50 °C
Mounting	Plug‑in installation inside iTNC 530 control cabinet
Protection class	IP20 (cabinet‑mounted)
Weight	1.3 kg
Certifications	CE

Key Features and Advantages

multi‑axis encoder support: MC422 359630‑01 accepts both 1 Vss sinusoidal and EnDat absolute encoders, supporting up to 5 controlled axes for milling, 4‑axis and 5‑axis simultaneous machining applications. integrated analog drive & temperature acquisition: 3‑channel ±10 V analog outputs output speed commands to servo drives; PT100 inputs collect spindle and cabinet temperature data for thermal compensation functions. rich built‑in communication interfaces: Ethernet enables DNC network program transmission; RS232/RS422 supports legacy peripheral devices; USB facilitates program backup and data exchange. all‑in‑one CNC‑PLC architecture: Executes NC path calculation and onboard PLC logic inside one module.

MC422 359630-01

No external PLC hardware is required for standard machine‑tool interlock and auxiliary‑axis control. direct drop‑in spare for legacy iTNC 530: Mechanical form‑factor, pin‑out and interface definition match original unit. Existing machine PLC program, parameter files and machine kinematics can be restored directly after replacement, shortening machine‑tool downtime during maintenance. TFT‑XGA display driving capability: Onboard video output connects directly to HEIDENHAIN operator panel, delivering high‑resolution graphical CNC HMI without extra adapter boards.

Application Fields

MC422 359630‑01 is deployed inside HEIDENHAIN iTNC 530 CNC cabinets for high‑precision machining centres, 5‑axis milling machines, die‑mould processing equipment and aerospace component processing machine‑tools.

In mould‑making workshops, it executes complex 3D surface interpolation for die‑and‑mould milling tasks, ensuring path accuracy and surface finish. Within aerospace workshops, it runs multi‑axis simultaneous machining for structural parts and turbine‑blade processing.

For machine‑tool overhaul and retrofit projects, MC422 359630‑01 serves as spare replacement for aged main computer modules. It re‑uses original servo drives, encoders, operator panels and machine wiring, avoiding costly full‑CNC upgrade and extending service‑life of high‑value machine assets. It is also used for spare‑part inventory for equipment‑maintenance workshops servicing HEIDENHAIN‑equipped machine‑tools.

Installation and Maintenance

pre‑installation preparation: Power‑off the complete iTNC 530 cabinet before replacing MC422 359630‑01. Disconnect all communication, encoder, analog and display connectors. Inspect backplane and connector pins for bending or oxidation. Restore complete NC‑parameter, PLC program and machine‑kinematics backup after physical installation. Perform reference‑point return and axis loop test before putting machine‑tool into production.

maintenance recommendations: Keep cabinet cooling fans and filter mats clean to avoid over‑temperature faults. Regularly back‑up NC‑parameters and PLC program to external storage. The integrated hard‑disk is a wearing component; monitor hard‑disk‑related alarms. Do not hot‑swap MC422 359630‑01 under powered‑on cabinet status. The module contains no field‑serviceable assemblies; return defective hardware to HEIDENHAIN‑authorised repair centres.

Product Warranty & Support

Each MC422 359630‑01 passes factory hardware test, encoder‑interface validation and PLC‑CNC runtime verification prior to shipment. Standard equivalent warranty covers manufacturing defects for 12 months from delivery date. Spare‑part sourcing, remote‑technical guidance and SAT‑support services are available for spare‑replacement, parameter‑restore and axis‑commissioning. Application‑engineers offer support for kinematics setup, thermal‑compensation configuration and fault‑diagnosis. Long‑term spare‑inventory mitigates obsolescence risk for installed iTNC 530 machine‑tool control systems.

MC422 359630-01 iTNC 530 Main Computer Module (MC Unit)