Kollmorgen Traditional digital servo amplifier BJRL-20012-110001

The Kollmorgen BJRL-20012-110001 is a legacy digital servo amplifier (servo drive) from the Goldline Smart Drives (BJR/BJRL) series.

This series was designed to provide a compact, high-efficiency control solution for brushless motors, often used in precision automation and high-speed positioning.

Technical Specifications

This drive is characterized by its use of V-MOS technology and its flexibility with various power inputs.

Attribute    Specification

Series    Goldline BJR/BJRL

Input Voltage    3-Phase $220\text{V}$ AC (Nominal); also supports Single-Phase

Voltage Range    $35\text{V}$ to $130\text{V}$ AC ($50/60\text{Hz}$)

Output Current    Approx. $6.5\text{ A}$ continuous

Switching Frequency    $30\text{ kHz}$

Output Stage    4-Quadrant V-MOS

Form Factor    Eurocard format (designed for rack mounting)

Key Features

Versatile Power Options: Can be powered by a three-phase supply with smoothing capacitors or a single-phase supply (any phase) with the rated voltage.

Control Loops: Features integrated PI (Proportional-Integral) current and speed controllers for precise motor response.

Compatibility: Frequently paired with Kollmorgen Silverline or Goldline H-series brushless motors (e.g., H-234-H or H-342-H).

Protection: Includes short-circuit protection on motor terminals, over-temperature monitoring of the output stage, and overvoltage protection.

I/O Interface: 24V logic compatible with PLCs, featuring electrically isolated optocouplers.

Diagnostic Indicators

The unit typically features several LEDs on the front panel to indicate system status:

BTB (Ready): A relay contact that indicates the amplifier is operational and “Ready to be Busy.”

Fault LEDs: These indicate specific errors such as over-current, thermal overload, or voltage irregularities.

Maintenance & Support

As this is a legacy product, it is no longer in active production. If you are maintaining an existing system:

Manuals: You can often find technical documentation under the “Servostar” or “Seidel” legacy archives on the Kollmorgen website.

Direct Replacements: Depending on your application, modern AKD or S700 series drives are the current upgrade path, though they will require wiring and configuration changes.