Product Details

Baumuller 3.0125H is a revised upgraded fieldbus and peripheral interface PCB card built for legacy Baumuller modular servo drive platforms. This communication board works as the external gateway of the servo drive, transferring motion setpoints, real‑time status and diagnostic data between the onboard main control CPU and upper PLC, HMI and other automation hosts. Compared with the earlier 3.0125G version, this revision brings improved bus signal stability, expanded I/O handshake capacity and stronger surge suppression for harsh industrial environments. The servo bus PCB adopts reinforced isolated signal circuits and transient protection components to maintain steady communication under heavy electromagnetic interference. It is constructed with industrial multi‑layer FR4 PCB plus conformal coating, protecting delicate signal traces against dust, moisture and corrosive vapors inside control cabinets. As an obsolete and hard‑to‑source discontinued spare, it serves as a direct drop‑in replacement to restore reliable fieldbus connectivity and external signal exchange for ageing Baumuller servo drive systems.

Basic Parameters

Brand: Baumuller

Model: 3.0125H

Product Type: Servo drive fieldbus communication & peripheral interface PCB card

Main Function: Fieldbus bidirectional transmission, motion command exchange, digital I/O handshaking, galvanic signal isolation, communication fault diagnosis

Interfaces: Backplane edge connector, fieldbus terminal port, multi‑channel digital signal terminals, communication status LED indicators

PCB Treatment: Conformal coated multi‑layer circuit board, UL 94V‑0 flame retardant

Mounting: Internal slot plug‑in mounting inside compatible Baumuller servo drive housing

Supply Voltage: 24 V DC auxiliary supply

Net Weight: Approximately 225 g

Condition: Original discontinued industrial spare

Supported Functions

This communication board supports high‑reliability bidirectional data communication for the complete servo drive unit. It receives enable signals, position and speed setpoints sent from the host automation system, and uploads real‑time torque, speed, position and fault alarm information back to the master controller. The servo bus PCB continuously monitors bus integrity, detects cable breakage, bus conflict and communication timeout, and sends fault codes to the main control board promptly. It synchronizes smoothly with the main control board, encoder feedback board and gate drive board to realize coordinated multi‑axis motion. If this interface board fails, the drive will lose connection with the host controller and cannot accept remote motion instructions; replacing this signal interface board quickly recovers all external communication functions.

Core Functions

The core function of this communication board is stable data exchange and electrical isolation between the servo drive and external automation equipment. It converts internal backplane logic signals into standard fieldbus signals and blocks external wiring noise from disturbing the drive’s closed‑loop control. It provides readable diagnostic data for on‑site commissioning and maintenance. It acts as a drop‑in replacement spare to rebuild the communication channel of legacy Baumuller motion machinery and keep automated production lines interconnected and running normally.

Hardware Specifications & Environmental Features

Operating Temperature: 0°C ~ +60°C

Storage Temperature: -20°C ~ +75°C

Relative Humidity: 5%–95%, non‑condensing

Housing: Bare coated PCB with slot edge connectors

Protection: ESD protection for all signal ports, IP20

Anti‑interference: Onboard differential line drivers and multi‑stage filtering circuits to suppress electromagnetic noise inside cabinets

Compatibility: Matched for legacy Baumuller modular servo drive units

Industry Applications: Applied in legacy petrochemical distributed control, old paper making production automation, material handling conveyor lines, packaging and textile machinery, water treatment remote signal collection and large conveyor remote I/O control racks.

Note：Confirm drive model compatibility, fieldbus protocol, baud rate setting and pin definition before ordering.

This is from our current stock.

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