PMX MANUAL
33
118164-001 REV. A
5.2.2
Faults Messages
NAME
Arg. #
DESCRIPTION
ACTION
Interlock 1
1
General Purpose Interlock Input 1
(Originally called Tube
Temperature). An open/logic high on
the input pin results in a fault
condition. A Logic low / Short to GND
is the “Good” or non-faulted
condition. This was originally
intended for connection to a tube
temperature switch, but can be used
for other purposes.
Check the short connection.
Interlock 2
2
General Purpose Interlock Input 2
(Originally called Tube Flow). An
open/logic high on the input pin
results in a fault condition. A Logic
low / Short to GND is the “Good” or
non-faulted condition. This was
originally intended for connection to
a tube flow switch, but can be used
for other purposes.
Check the short connection
HSS Fault
3
High Speed Starter Fault – Any Fault
related to operation of the high speed
starter.
1. Check the AC line voltage.
2. Check the low voltage cable
connections.
3. Ensure that no more than 2
times boost within 1 minute.
ARC
4
ARC Fault – The unit shutdown high
voltage because an electric arc
occurred.
1. Check HV cable connections.
2. Season X-ray tube.
3. Replace the X-ray tube.
Over Power
5
An attempt was made to turn on the
generator with settings that result in
a power output of greater than 5kW.
Over Time
6
This fault is possible only in AEC
Mode. It indicates the unit shut-down
because of the expiration of the
exposure timer, rather than the AEC
control signal. (Timeout of exposure
timer with AEC active)
Ensure that the cumulative time in
one exposure sequence not
exceed the exposure timer (ms).
In AEC mode, exposure timer acts
as back up timer.
Over mAs
7
The mAs of the current exposure has
exceeded the set value by 25%. This
is calculated by taking the average
current and multiplying by exposure
time. The unit will fault immediately
when this happens, and shut down
the high voltage. Note that when in 2
point mode the limit is set to 125% of
the value programmed using the “Set
mAs” command. In 3 point mode it is
calculated by multiplying the set mA
value * then set exposure time.
Over Duty
8
The unit requires 20 seconds in-
between exposure cycles. A cycle
being defined as entering prep,
Ensure that the exposure
operation within the duty cycle
limitation.
