Yaskawa EN4-00387 CNC I/O Control Board

Technical Specifications

Model:EN4-00387 (JANCD-EN4)

Brand:Yaskawa

Product type:CNC machine tool I/O control PCB board

Power supply:DC24V

Control function:Digital input signal collection,digital output drive,peripheral safety interlock signal processing,external device status acquisition

Communication:System backplane bus

Mounting:Rack mount

Operating temperature:0~55℃

Relative humidity:5~95% non-condensing

Weight:0.43kg

Certification:CE

System compatibility

EN4-00387 belongs to Yaskawa Yasnac CNC controller family,matched with Yasnac series CNC system and servo units. Widely used in CNC lathes,milling machines and precision machine tools. This is a discontinued legacy I/O board for old machine tool maintenance spare replacement.

Function

EN4-00387 serves as high precision CNC I/O control board. It collects limit switch,door interlock,pressure and sensor digital signals from machine tool peripheral equipment,output switching signals to control solenoid valves,relays and auxiliary actuators. Built-in opto-coupling isolation circuit to isolate industrial field noise. It realizes bidirectional signal interaction between CNC host system and machine tool peripheral components.

Installation

Mount EN4-00387 inside CNC controller cabinet. Complete backplane bus and field wiring according to wiring drawing. Backup CNC parameters before replacement,verify all input and output channel functions after power-up.

Interface

‑System backplane bus connector

‑Multi-channel digital input terminal

‑Multi-channel digital output terminal

‑Onboard opto-isolation and signal protection circuit

Circuit feature

Compact rugged PCB layout,equipped with surge and ESD suppression circuit. Stable digital signal transmission,strong anti-interference performance for industrial cabinet environment. Standard factory firmware preloaded.

Feature

EN4-00387 is obsolete Yaskawa Yasnac series spare part. Typical failures include IO channel burnout,signal reading failure,terminal pin oxidation. Check board integrity and connector pins before replacement. This board must match corresponding Yasnac CNC controller,direct substitution without channel function test is not recommended.

Diagnostic

When IO channel no response,interlock signal loss or bus communication dropout occurs,the board triggers corresponding alarm codes and sends fault signal to CNC main controller.

Built‑in function

Machine tool peripheral signal acquisition,digital output drive,safety interlock signal processing,overcurrent protection,IO channel fault monitoring,used as CNC I/O control board spare replacement.

Product Brief

EN4-00387 (JANCD-EN4) is Yaskawa Yasnac CNC system I/O board for CNC machine tools and precision automation equipment. Confirm CNC controller model matching before ordering. ESD protection required during handling and installation.