Danaher Motion / Kollmorgen BDS4A-240J-0001\604C2 Brushless Drive Sinewave Servo Amplifier
  • DanaherMotionKollmorgen_BDS4_604C2_View1
  • DanaherMotionKollmorgen_BDS4_604C2_View2

Danaher Motion / Kollmorgen BDS4A-240J-0001\604C2 Brushless Drive Sinewave Servo Amplifier

• Amplifier Generation Indicator: U.L. 508 Listed Configuration
• Maximum Output Voltage: 230VAC
• Output RMS Current Per Phase, Continuous: 40
• R/D Converter: Special. Accuracy 8 Arc Min/Max
• Mechanical Options: Standard Unit, No Options
• Electrical Options: Electronic Encoder Output
• Motor and Winding Designator: 604C
• Compensation Designator: 0 - 5 X Jm

Have a quote from somewhere else? Click Here
Stock # 80963-3
Quick Quote
Sell Yours
Repair Quote
  • More Info
  • Tech Specs
  • Additional Photos
  • Datasheets / Manuals 
  • View It Live Request 
Contact Us
Danaher Motion / Kollmorgen BDS4 Series Brushless Drive Sinewave Servo Amplifier

  • Modular Construction Maximizing Serviceability
  • Two-part Plug Connectors Interfacing Between the BDS4, PSR4/5 and Other Equipment
  • Routine Adjustments Accessible from the Front
  • High Frequency (20 kHz) Motor Current Ripple for Quality Servo Performance, Higher Efficiency and Less Audible Noise


The Danaher Motion / Kollmorgen BDS4 Brushless Drive Sinewave Servo Amplifier is divided into four (4) main sections:

1. Fault Diagnostics monitor various signal leads. When a fault condition occurs the fault circuit will become latched, the BDS4will become internally inhibited, the appropriate red LED will become illuminated, and the Drive-Up contact will open indicating that the BDS4 is in its Inhibit mode.

2. The Input/Output interface circuitry is divided into two functions:

(A) Signals to and from the motor andBDS4.These signals are associated with the motor system resolver. A 7.0 kHz excitation signal is generated in theBDS4 and sent to the resolver. Two resolver feedback signals (sine and cosine) are received by the BDS4 and processed by an R/D (resolver-to-digital) converter. The R/D unit generates a digital position word used in electronically commutating the motor and an analog velocity (internal tach) signal to close the servo loop.

(B) Signals to and from the signal source (PLC, CNC, etc.) and BDS4.

There are numerous signals that may interface between the signal source (PLC, CNC, etc.) and the BDS4. These inputs and modes of operation differ with each application.

3. The BDS4 consists of a single velocity loop and three inner current loops. To give precise velocity control, the velocity loop is normally configured as a proportional, plus an integral, plus a derivative gain servo loop. The output of the velocity loop is the current command for the three microprocessor-based current loops.

The heart of the BDS4 is its microprocessor which receives and processes the current command (velocity error) signal from the output of the velocity loop circuit, the position information from the resolver-to-digital converter, and several other signals. After receiving the velocity error, the microprocessor generates three sinusoidal current commands. These current commands are forwarded to the three proportional plus integral current loops, one for each of the three motor phases.

The microprocessor is the key element in the Industrial Drives patented torque angle technique. The microprocessor varies the phase of the currents with respect to motor flux and significantly improves the motor speed-vs-torque profile.

4. The outputs from the three current loop circuits are converted into a 10 kHz pulse width modulation scheme. The modulation is such that the 10 kHz PWM results in 20kHz current ripple in the motor, resulting in very quiet motor operation.

The PWM switching signals are optically coupled to the power stage gate drive hardware for complete electrical isolation. The BDS4 uses IGBT's (Isolated Gate Bipolar Transistors) for the output power stage; allowing high frequency operation.

Product Family: BDS4

Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.

Contact Us


Contact Us

Item Images

Click a thumbnail to view larger image:

Danaher Motion / Kollmorgen BDS4 Series Brushless Drive Sinewave Servo AmplifierDanaher Motion / Kollmorgen BDS4 Series Brushless Drive Sinewave Servo Amplifier

Contact Us

View It Live

View equipment LIVE - Before you buy!

InstraView™ Equipment Inspection

Buying used equipment doesn't always have to be a shot in the dark. We know there are plenty of differences when it comes to used equipment and quite often, choosing between different pieces is difficult, especially when the equipment is not sitting right in front of you.

Well, what if you were able to see a piece of equipment before you purchased it? Not just a picture from the manufacturer's website, but the actual piece of equipment you would receive.
With InstraView™, we move you one step closer to inspecting the equipment you're interested in without having to wait for the equipment to show up at your door.

InstraView™ works in your web browser and allows you to view the actual piece of equipment you're interested in before purchasing. You can zoom in close to see the labels with the serial number or zoom out to see the overall condition of the equipment.

It's like having the store come to you!

InstraView Request Form

To get started:

  1.   Fill in the request form below
  2.   We'll send you an email letting you know exactly when your piece of equipment will be available for viewing

Item to Inspect: 80963-3 - Danaher Motion / Kollmorgen BDS4A-240J-0001\604C2 Brushless Drive Sinewave Servo Amplifier

All you need is a web browser (ie. Microsoft Internet Explorer or Netscape) and Sun's Java Runtime Environment installed. If you need to install the Sun Java Runtime, you may download the latest Java SE Runtime Environment (JRE) http://www.oracle.com/technetwork/java/javase/downloads/index.html