118165-001 REV. A
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ARG2 = Tube Flow switch or general purpose interlock 3. Unit input
Logic High / Open is fault state, Logic low / Closed (shorted to
ground) is good state.
ARG3 = High Speed Starter Fault. One (or more) of the possible
High Speed Starter faults have occurred. Information on the
specific faults can be obtained using the “Request Expanded HSS
Status” Command.
ARG4 = ARC fault. There has been a high voltage arc.
ARG5 = An attempt was made to turn X-Ray on with an invalid
setting that would result in an over power condition (power > 5kW).
ARG6 = Over Time. This fault is possible only when AEC Mode is
Active. It indicates that the exposure was terminated by the supply
internal exposure timer, rather than the AEC Control signal. That is,
the exposure time programmed into the unit expired with the AEC
control and exposure control signals on.
ARG7 = Over MAS. The exposure mAs, was 25% or greater over
the programmed setting.
ARG8 = Over Duty. An over duty fault will be generated if prep is
entered when any of the following conditions is true:
- The total exposure time for previous exposures exceeds 5
seconds in any 2 minute period.
- An attempt to start a new exposure is made less than 20
seconds after the previous exposure ended.
- An attempt to start a new exposure is made when the Inverter
Temperature Sensor reading exceeds 60c.
The system is limited to a total exposure time of 5 seconds over a
2 minute period. If the cumulative exposure time exceeds 5
seconds, the exposure will be allowed to complete normally, and
the system will not fault. However, if an attempt is made to turn X-
Ray on again before the sufficient has elapsed, the system will set
this fault. The system also can’t begin another exposure until 20
seconds has elapsed from the last exposure. An attempt to start an
exposure before 20 seconds has passed from the end of the
previous exposure will result in an over duty fault. The Inverter
Temperature sensor detects excessive heat buildup on the Inverter
IGBTs, and new exposures are not allowed when the sensor reads
> 60c.
ARG9 = Overvoltage – Set if the output voltage exceeds 42765V
for more than 1msec.
ARG10 = Overcurrent – Set if the output current exceeds 213.828
mA for more than 100msec.
ARG11 = Regulation – Set if the output voltage (kV) or current (mA)
is more than +/- 25% of the set value. Note that the kV value is
allowed 30 msec from X-Ray on and the mA value is allowed 250
msec from X-Ray on to settle before the fault can occur.
