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Chapter 4 Theory of Operation
HF Series X-ray Generators - Service Manual
Revision W
Quantum Medical Imaging
4-13
ROTOR BOARD CIRCUIT (NON-HIGH SPEED STARTER SYSTEMS)
The Rotor Circuit (see Rotor Circuit Block Diagram in Chapter 6, DIAGRAMS) sup-
plies the power needed for the tube rotor running at 50/60 Hz. The 50/60 Hz
running frequency depends on the input AC line. The power consumption varies
depending on the tube. Different tubes need different phase shift capacitor (C1)
as recommended by the tube manufacturer. Changing the tube to a different
type may require changing the phase shift capacitor connected to J5 (check man-
ufacturer’s tube data sheet).
The boost and the run voltages are constant; boost is 220VAC and run is 60VAC.
The operation of the rotor starts during PREP. The ROTOR ON signal comes from
the Logic Circuit at J3-1, which is input to Control Circuits. This RELAY ON signal
from the Control Circuits turns on relay K2 generating the COM output, which
connects the common to the rotor (TP1). The BOOST ON signal (TP6) starts the
Boost state by generating the Q1 DRIVE signal to Q1 through the Control Circuits.
When the boost period is finished, the BOOST ON signal turns off and the RUN
ON signal turns on (J3-3). By turning on the RUN ON signal (TP7) and turning
BOOST ON off, Q1 turns off and Q2 turns On. The RUN ON signal will remain on
throughout the PREP and Expose states. In case the tube's thermal switch is acti-
vated (indicated by active TEMP. FAULT signal), Relay K2 will open removing
power to the rotor, and the Control Circuit will turn off either Q1 or Q2. A "Rotor
Thermal Error" will be displayed on the OCP.
The Main (TP2) and Phase (TP4) currents are sampled by the Control Circuits to
determine whether the rotor is rotating (when rotating, the ROTOR ROTATING
signal at J3-4 is active). If the ROTOR ROTATING signal is inactive, an error will
be displayed on the OCP. Power needed for operation of the Control Circuits and
Relay K2 is supplied through connector J4.
ROTOR BOARD CIRCUIT (QUANTUM INTERNAL HIGH SPEED STARTER SYSTEMS)
The following applies only to systems equipped with a Quantum-manufactured
High Speed Starter (Q-HSS). The Q-HSS functions to drive the rotating anode of
many types of 3" or 4" x-ray tubes. The tube anode rotates at either of two dis-
tinct speeds/frequencies; low speed operation (60 Hz) or high speed operation
(180 Hz).
All necessary settings for the high speed starter are configurable by accessing the
generator’s Service Configuration screen (refer to Chapter 3, CALIBRATION).
The Q-HSS consists of two circuit board assemblies: HSS Control Board A20A1
(AY40-035S) and HSS Drive Board A20A2 (AY40-036S).
All required settings needed for high speed starter timing and control are known
to Logic Board A1, The BOOST RUN/ BRAKE voltages are set based on tube
model.
Refer to Chapter 2, ASSEMBLY & INSTALLATION for HSS Driver Board AY40-036S
transformer input wire connections to terminal block TB1 plug and for wiring con-
figuration of rotor phase capacitor.
Содержание ODYSSEY HF Series
Страница 1: ...Service Manual ODYSSEY Q VISION HF Series X ray Generators Manual Part No DC30 011 Revision W...
Страница 15: ...Chapter 1 1 SPECIFICATIONS 1...
Страница 16: ...1 2...
Страница 37: ...Chapter 2 1 ASSEMBLY INSTALLATION 2...
Страница 38: ...2 2...
Страница 93: ...Chapter 3 1 CALIBRATION 3...
Страница 94: ...3 2...
Страница 165: ...Chapter 4 1 THEORY OF OPERATION 4...
Страница 166: ...4 2...
Страница 185: ...Chapter 5 1 SERVICE INSTRUCTIONS 5...
Страница 186: ...5 2...
Страница 281: ...Chapter 6 1 DIAGRAMS 6...
Страница 282: ...6 2...
Страница 349: ...A 2...
Страница 364: ...B 1 CALIBRATION Agfa DiRex B Appendix...
Страница 365: ...B 2...
Страница 420: ...C 1 Log4View Error Logger C Appendix...
Страница 421: ...C 2...
Страница 428: ...D 1 CALIBRATION Using Generator Service Tools D Appendix...
Страница 429: ...D 2...