X-Ray & ABS
8
The generator monitors the X-ray control lines and reports an error if any are active in the standby state.
The X-RAY SWITCH STUCK message is displayed when an X-ray control is sensed in an “on” state (stuck) during system startup. This error
applies to the Left or Right X-ray controls.
Generator Control
Manual kVp Control
The manual kVp control key on the X-Ray Control Console allows manual settings of the kVp value by the operator. When
pressed, the key is sensed by the X-Ray Control Console Switch Matrix. The command to increase or decrease the kVp value is
sent to the console X-Ray Control Console Interface PCB and is delivered to the X-Ray Control Console CPU card plugged into
the X-Ray Control Console Backplane.
The output control signal from the CPU card via the X-Ray Control Interface PCB is then sent via ARCnet to the Table/Generator
Interface Card.
The command to increase or decrease kVp is then relayed by CANbus to the Generator Power Module Generic Interface card.
This “standard” interface PCB provides a CAN bus communication line for command signals between the generator and the
system. The Interface card passes the command to the kV Control PCB.
The kV Control PCB functions as the main control of the generator. The CPU in this card passes the manual kVp command to
the kV Measure PCB, which resides on top of the HV Tank. (The HV Tank is sealed by the kV Measure PCB secured to the top
of it. This PCB must not be removed.) The kV Measure PCB controls the HV Tank by applying a kV Reference to the kV
Measure PCB in preparation for an exposure.
When the exposure is enabled, the kV Control PCB CPU receives the exposure enable signal, applies the filament drive, and
enables the anode rotation function. In addition, it measures kV demand, kV Measure, DC Bus, gate voltage and HV Tank
temperature during the exposure.
The CPU also applies any new kV and mA reference if the parameters are changed manually by the operator.
The exposure control of the CPU starts the HV Power Inverter by driving the HV Tank IGBTs and puts the generator in it’s active
state, regulating the inverter and monitoring the hardware for safety issues.
Summary of Contents for OEC UroView 2800
Page 19: ...X Ray ABS 19 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation ...
Page 37: ...X Ray ABS 37 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation ...
Page 42: ...X Ray ABS 42 Service Periodic Maintenance Contents Schematics Illustrated Parts Installation ...