X-Ray & ABS
6
Power-on Sequence
Generator power-on is achieved by various means, depending on system configuration (circuit breaker, console ON/OFF, PDU
contactor). In all cases, generator power-on starts when input power is applied.
For a three-phase generator, the low voltage power supply utilizes 220V supplied by the system independently of the three-phase
input.
It pr15V to the 15-volt bus (Rotation LEDs DS1andDS2 are turned ON).
The +15V rise triggers the 5V rise on the kV Control, Heater and Rotation PCBs (LED DS3 is turned ON).
For single-phase Generator, a DC voltage (400VDC, DS2 turned on) is provided on the AC/DC PCB to supply the low voltage
power supply (NE1) as soon as the input power is applied. The low voltage power supply starts pr15V to the 15-volt bus
(Rotation LEDs DS1 and DS2 are turned ON) and the 160VDC (DS1) is provided to the Heater PCB.
The +15V rise triggers the 5V rise on the kV Control, Heater and Rotation PCBs (LED DS3 turned ON).
At this stage, many actions occur in parallel on the other generator PCBs. These actions are described for each PCB within this
manual section.
Exception handling
The generator software performs an auto-test at power up and continuously monitors the correct operation of the generator
functions during application. Any error stored in the error log is reported to the system through a protocol that transfers the error
code.
Errors found can only be reported if the generator is powered on. A list of error codes is contained in the Diagnostics section of
this manual.
CANbus
The CANbus is a network developed and standardized by the automobile industry. Its main purpose is to transport short
command messages with a guaranteed latency and without any information loss. Defined for small systems, it does not require
large amounts of software to encode and decode the messages.
The CANbus is used for communications between the Table/Generator Interface PCB and the generator.
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 ...
