Rexroth BTA20.3-NC-DB-VB-BS Machine Control Board Spare Part

Technical Specifications

Model:BTA20.3-NC-DB-VB-BS

Brand:Rexroth

Product type:Subrack plug-in machine control board

Communication bus:INTERBUS-S, BT-BUS

Power supply:24V DC

Mounting:Subrack plug-in installation

Weight:0.82kg

Operating temperature:0~45℃

Storage temperature:-20~70℃

Relative humidity:5~95% non-condensing

Protection class:IP20

Certification:CE

System compatibility

BTA20.3-NC-DB-VB-BS belongs to Rexroth Indramat BTA20.3 control board family,matching Indramat servo drive and CNC control systems,widely used in CNC machine tools,press machines and automated production line control cabinets.This is a legacy spare part for industrial equipment maintenance replacement.

Function

BTA20.3-NC-DB-VB-BS is a plug-in machine control board.It serves as the core logic and bus communication unit of the machine control system.It executes machine logic programs,exchanges data via INTERBUS-S and BT-BUS with servo drives,operator panels and I/O modules.It handles machine status detection,logic interlock and motion command distribution.

Installation

Insert BTA20.3-NC-DB-VB-BS into standard control subrack,tighten front panel fixing screws.Connect 24VDC power and bus signal cable according to wiring diagram.Check terminal connection and shield grounding before power-on commissioning.

Interface

‑24V DC power terminal

‑INTERBUS-S / BT-BUS bus port

‑Digital signal I/O terminals

‑Backplane bus connector

Circuit feature

Built-in bus protocol processing chip,optocoupler isolation for signal channels,strong anti-interference,stable data communication,suitable for harsh workshop industrial environment.

Feature

BTA20.3-NC-DB-VB-BS is obsolete Rexroth spare part.Typical faults:bus communication failure,logic chip damage,capacitor aging,backplane contact oxidation.Inspect bus communication and logic signal before replacement.This control board must match original subrack and system firmware,direct substitution without inspection is not recommended.

Diagnostic

When board fails,the system triggers bus communication alarm,machine logic abnormal,servo axes cannot receive motion commands.

Built‑in function:Machine logic control,INTERBUS-S bus communication,motion command distribution,status signal collection,used as Rexroth Indramat CNC control system spare replacement.

Product Brief

BTA20.3-NC-DB-VB-BS is Rexroth Indramat BTA20.3 series plug-in machine control board with INTERBUS-S interface.Verify rack type and system firmware before ordering.ESD protection required during handling and installation.