40kV/5kW Mammography X-Ray Generators

Spellman’s VMX redefines the standard for high perfor­mance, low cost Mammography X-Ray generators. The VMX was born from an integrated, high performance, value added design perspective so there’s no need to compromise critical specifications to meet ever demand­ing system price targets.

The 40kV/5kW X-Ray generator integrates a dual filament power supply and a dual speed starter. A DC current source filament power supply provides fast rise times with stable and accurate X-Ray tube emission currents. The solid encapsulated high voltage output section eliminates oil concerns while reducing the effects of environmental humidity and contamination.

Flexibility in interfacing is provided via RS-232 and optional Ethernet connectivity. The VMX supports advanced mammography application features including Smart AEC Exposure, Automatic Filament Calibration, Tube Anode Heat Calculator and user configurable Tube Library. Compact, full featured,high performance, low cost. Spellman’s VMX, the next generation Mammography X-Ray generator.

Specifications

^{(Ref. 128092-001 REV. L)}

Input Voltage:

200-240Vac (±10%), single phase, 50Hz/60Hz

Input Current:

Minimum 35A service recommended for 5kW operation

External EMC Filter (Schaffner FN2070-36-08-36A) required to meet CE/EMC specifications – Not provided with the generator

Mains Contactor – Not provided within the generator. Customer is responsible for mains safety disconnection.  

Output Voltage

Output Voltage Range: 20kV to 40kV 

Polarity: Positive, grounded cathode X-Ray tube

Accuracy: Within 1% of programmed values

Reproductibility: <0.5%

Settling Time: <10ms

Ripple: ≤ 1% 

Stability: ≤ 0.01% per 8 hours

Temperature Coefficient: ≤ 100ppm/°C

Output Current/Power

Output Current Range: 10mA to 200mA

Output Power: 5kW @ 0.1 second loading time 

Maximum mAs:

600mAs

Exposure Timer:

5ms-10 seconds

Accuracy:

Within 2% of programmed values measured after mA rises to stable DC level

Reproductibility:

 <0.5%

Settling Time:

<10ms

Filament Configuration:

DC filament drive: self corrected filament preheat settings with closed loop emission control and smart learning algorithm

Filament Output:

0-6 amps at a compliance of 5.5 volts, maximum

Dual Speed Starter:

High speed (180Hz) and low speed (60Hz) can be configured via the serial interface.

Boost and Brake capability provided.

High Voltage Connector:

60kV, Claymount CA-3 type or equivalent

Optional Communication Interface:

Ethernet (RJ45)

Grounding Point:

M5 ground stud provided on chassis

Environmental:

Temperature Range:

Operating: 10°C to 40°C

Storage: -40°C to 85°C

Humidity:

20% to 85% RH, non-condensing.

Cooling:

Convection cooled, no internal fans. Forced air cooling not required

Dimensions:

9.38. H X 6.6. W X 12. D (237.5mm x 167.6mm x 304.8mm)

Weight:

<22 pounds (10kg 

Regulatory Approvals:

Compliant to EMC:IEC 60601-1-2. UL/CUL recognized file E242584. RoHS compliant.

Application Features:

• 2 point/3 point exposure modes
• AEC/Smart AEC exposure modes
• Automatic filament current calibration
• Tube anode heat calculator
• User configurable tube library

TB2 ROTOR INTERFACE

TB3 TUBE AND INTERLOCK INTERFACE

VMX STANDARD SYSTEM INTERFACE—JB1 25 PIN MALE D CONNECTOR

Tables & Diagrams

DIMENSIONS: in.[mm]

FRONT VIEW

TOP VIEW

BOTTOM VIEW

SIDE VIEW

Frequently Asked Questions

Application Notes AN-12 – The Benefit of Using a Current Source to Power X-Ray Tube Filament Circuits
Application Notes AN-01 – Fundamentals of X-Ray Generator – X-Ray Tube Optimization