PMX70

The PMX70 is Spellman’s new high performance X-Ray generator designed to power Varex Mammography X-Ray tubes. It features a 12kW peak high frequency inverter and high voltage section complete with a smart learning filament power supply and high speed starter. State of the art power conversion technology provides stable and accurate X-Ray tube high voltage with fast rise and fall times. Ethernet and RS-232 interfacing provides easy system integration. Preloaded X-Ray tube parameters, easy access interlocks and I/O connections, and internal generator diagnostics. Optional GUI utility software is also offered to help with initial system integration.

Specifications

^{(Ref. 128113-001 REV. A)}

Input Voltage:

230Va c ±10%, single phase, 50Hz/60Hz

Input Current:

30 amps, customer to fuse.
Mains Contactor – not provided.
Customer is responsible for mains safety disconnection.

Less than 30 amps over a typical scan is defined as following: Due to unknown line impeadance, customer supllied external inductors 100uH to 300uH in series with input connections, (200uH to 600uH total), may be required to keep rms currents below 30 amps and to avoid erroneous circuit breaker trips. Spellman can recommend appropriate inductors as required.

Output (Tube) Voltage

Output Voltage Range:

25kV to -70kV

Polarity:

Negative output polarity; to drive rotating anode, floating cathode X-Ray tube (Varex M-1581).

Accuracy:

2% (measured per IEC60601-2-45)

Reproductibility:

<0.5%

Output (Tube) Current/Power  

Output Current Range:

10mA to 200mA 

Output Power:

12kW peak, 400 watt average. 

Duty Cycle:

25%. A typical scan being at fixed settings in the range of 40kV- 70kV and 16mA-200mA. Pulsed operation is supported. 

Accuracy:

< ±10% on exposure less than 10ms (measured per IEC60601-2-45) 

Rise Time:

1-2 milliseconds, typical (HV cable dependent). Fall time is load dependant, and the HV cable is a significant factor. The HV cable which is not provided with the PMX70, has a maximum length of 8 feet (2.4m). 

Fall Time:

<10ms with a HV cable length of 8 feet (2.4 meters) 

Exposure Time (Loading Time):

Maximum Single Exposure Time:

20 seconds

Shortest Single Exposure Time:

4ms

Loading time accuracy:

±3% +1ms (measured per IEC60601-2-45) 

Maximum mAs:

3200mAs

Exposure Timer:

4ms-20 seconds

Reproductibility:

<0.5%

Filament Configuration:

AC high frequency 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.

High Speed Starter:

High speed (360Hz) starter configured via the serial interface. Boost and Brake capability provided.

AC Input Connector:

Two position terminal block

System Interface Connector:

25 pin male D connector 

Rotor Interface Connector:

Four position terminal block

Tube and Interlock Interface Connector:

16 pin terminal block

High Voltage Connector:

Claymount CA-11 type or equivalent.

Communication Interface Connector:

Ethernet, RJ45 jack

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:

Forced air, Internal fan

Dimensions:

10.08˝ H X 19.49˝ W X 10.75˝ D (256mm x 495mm x 273mm)

Weight:

48.5 pounds (22.0kg)

Rotational Capability:

Capable of working on a rotating gantry with a nominal rotating speed of 0.5 Hertz. 

Regulatory Approvals:

Designed to comply with IEC 60601. RoHS Compliant.
Customer provided external EMC filter may be required to meet CE/EMC specifications.

X-Ray Tube Compatability:

Varex M-1581

 PMX70 STANDARD SYSTEM INTERFACE— JB1 25 PIN MALE D CONNECTOR

TB2 ROTOR INTERFACE

TB3 TUBE AND INTERLOCK INTERFACE

Tables & Diagrams

DIMENSIONS: in.[mm]

TOP VIEW

SIDE VIEW

FRONT 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