Product Details

Baumuller 300993 is an original drive power supply board and reliable servo auxiliary pcb developed for legacy Baumüller servo drive series, widely used inside the drive cabinet to generate stable low-voltage auxiliary power for control circuits, encoder interfaces and logic chips. This baumuller drive spare board converts the internal DC bus voltage into multiple regulated DC rails, supplying continuous power to the main control CPU, signal processing circuits and feedback channels. It integrates filtering capacitors, switching power chips, overvoltage and undervoltage monitoring circuits, with pin headers for plug-in connection to the main drive motherboard. The PCB adopts conformal coating to resist moisture, dust and corrosive gas, suitable for long-term continuous operation inside closed electrical cabinets. Once this auxiliary board fails, the servo drive will fail to boot or trigger constant power alarms. As a hard-to-source original spare, this drive power supply board serves as a drop-in replacement to restore internal power supply and normal startup for ageing Baumüller motion control drives.

Basic Parameters

Brand: Baumuller (Baumüller Nürnberg GmbH)

Model: 300993

Product Type: Servo Drive Auxiliary Power Supply PCB

Input: Derived from drive internal DC bus

Output: Multiple regulated low voltage DC for control logic

Connection: Pin header plug-in interface

Monitoring: Built-in voltage detection for fault alarm

PCB Treatment: Conformal coated circuit board

Mounting: Internal installation inside Baumuller servo drive

Product Status: Discontinued original industrial spare

Net Weight: Approximately 110 g

Supported Functions

This drive power supply board provides stable regulated auxiliary power for all low-voltage logic sections of the servo drive. The servo auxiliary pcb maintains steady output voltage during load fluctuation and short transient power ripple, ensuring reliable operation of encoder signal reception, serial communication and drive fault detection circuits. This baumuller drive spare board continuously monitors its own output voltage; if voltage deviates beyond preset range, it sends fault signals to the main controller and locks drive output for protection. It suppresses switching noise and reduces ripple interference to prevent false encoder faults and random drive resets. It works cooperatively with the main control board, power stage and feedback accessories to form a complete functional Baumüller servo drive unit.

Core Functions

As the internal power source for drive logic circuits, this drive power supply board delivers clean and stable auxiliary power required for the whole control section. Its integrated voltage monitoring provides early fault warning, and the coated PCB improves reliability in harsh factory environments. This servo auxiliary pcb works as a direct spare to rebuild the internal power system of legacy Baumüller servo drives.

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 plastic fixing standoffs

Protection: Overvoltage, undervoltage and output short-circuit protection

Anti-interference: Onboard LC filtering, isolated power conversion circuit

Compatibility: Matching legacy Baumuller servo drive mainboard and power stage

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 version, pin definition and DC bus range before ordering.

This is from our current stock.

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