PMX70 Series

  • Compact Space Saving Modular Format
  • Fast Rise/Fall Time Minimize Patient Exposure
  • High Speed Starter, Boost/Brake Capability
  • Ethernet/RS-232 Interfaces

*Note: All specifications are subject to change without notice. Please consult the English PDF version of this datasheet for the most up-to-date revision.

 Two Year Extended Warranty Logo CE Marking RoHs Compliant logo

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.

Технические характеристики

(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

Pin Signal Parameters
1 GND Signal Ground
2 +5Vdc Out +5Vdc, 100mA max.
3 RS-232 Tx Out RS-232 Transmit
4 RS-232 Rx In RS-232 Receive
5 PREP User signal (Contact Closure) to alert the generator that exposure sequence will begin. Once this signal is active, exposure parameters are locked in and cannot be changed. The generator enables the starter to to boost the rotor. Contact connection to pin 24. Closed = PREP, the filament is placed in preheat mode
6 READY Generator signal to user to indicate the rotor runs to speed and the generator is ready for X-Ray exposure Open Collector. Low/Active = Ready
7 ROTOR SHUTDOWN User signal to brake the rotor drive
8 EXPOSURE User signal (Contact Closure) to generator to generate X-Rays. Filament is boosted, and high voltage is generated after the boost time. Contact connection to pin 24. Closed = Exposure
9 X-Ray ON 75% Status Transistor output to indicate X-Ray ON status synchronized with 75% of kVP setting point.
10 X-Ray ON Status Transistor output to indicate X-Ray ON status synchronized with kV start up.
11 N/C N/C
12 X-Ray SHUTDOWN/AEC User signal to generator to rapidly turn HV OFF and ON during serial exposure sequence
13 RS-232 ISO Ground Isolated ground from RS-232 transceiver IC
14 HVG FAULT Status Generator signal indicating generator fault. Opencollector transistor output. Low/Active = Fault
15 Status Bit 1 3 bit status lines for up to 6 status messages. separate matrix descibing functionality. Open Collector. Low/Active = Message
16 Status Bit 2
17 Status Bit 3
18 N/C N/C
19 N/C N/C
20 kV Monitor Signal from generator. 0-10V = 0-50kV. Zout = 1kΩ
21 Emission Monitor Signal from generator. 0-10V = 0-200mA. Zout = 1kΩ
22 Filament Current Monitor Signal from generator. 0-10V = 0-6A. Zout = 1kΩ
23 Program/Monitor Return Ground for reference of program and monitor signals
24 +24Vdc Out For connection to PREP and EXPOSURE control relay coils
25 SHIELD/GND For connection of interface cable shield to generator chassis ground

TB2 ROTOR INTERFACE

Pin Signal Parameters
TB2-1 Phase To tube auxiliary winding
TB2-2 Run To tube principle winding
TB2-3 Com To tube common winding
TB2-4 Ground To tube housing ground

TB3 TUBE AND INTERLOCK INTERFACE

Pin Signal Parameters
TB3-1 SMALL FIL Connection to tube small filament
TB3-2 COMMON Connection to tube filament common
TB3-3 LARGE FIL Connection to large filament
TB3-4 GROUND Generator chassis for cable shield connection
TB3-5 Interlock 2+ Used if tube has separate thermostat switch. Open = OVER TEMP. (short terminals if not used)
TB3-6 Interlock 2-
TB3-7 Interlock 3+ Used if tube has cooling circulator flow switch. Open = NO FLOW. (short terminals if not used)
TB3-8 Interlock 3-
TB3-9 Safety Interlock+ User signal (Contact Closure) for safety interlocks such as door interlocks. Open turns HV OFF, or inhibits HV from being generated.
Closed = OK 24Vdc @ <1A typical
TB3-10 Safety Interlock-
TB3-11 Contactor Coil+ Option for contactor coil control
TB3-12 Contactor Coil-
TB3-13 Spare N/C
TB3-14 Spare N/C
TB3-15 Tube Current+ Tube current flows out from this pin
TB3-16 Tube Current- Tube current flows into this pin

Таблицы и диаграммы