User guide

Xenus XTL User Guide Operational Theory
Copley Controls Corp. 27
Fault Descriptions
The set of possible faults is described below. For details on limits and ranges, see
Fault Levels (p. 41).
Fault Description Fault Occurs When… Fault is Corrected When…
*Amplifier Over
Temperature
Amplifier's internal temperature exceeds
specified temperature.
Power module temperature falls below
specified temperature.
Motor Phasing Error Encoder-based phase angle does not
agree with Hall switch states. This fault can
occur only with brushless motors set up
using sinusoidal commutation. It does not
occur with resolver feedback or with Halls
correction turned off.
Encoder-based phase angle agrees
with Hall switch states.
*Feedback error Over current condition detected on the
output of the internal +5 Vdc supply used
to power the feedback. Resolver or analog
encoder not connected or levels out of
tolerance.
Encoder power returns to specified
voltage range.
Feedback signals stay within specified
levels.
*Motor Over Temperature Motor over-temperature switch changes
state to indicate an over-temperature
condition.
Temperature switch changes back to
normal operating state.
Under Voltage Bus voltage falls below specified voltage
limit.
+ DC bus voltage returns to specified
voltage range.
Over Voltage Bus voltage exceeds specified voltage
limit.
+ DC bus voltage returns to specified
voltage range.
*Following Error User set following error threshold
exceeded.
See
Position and Velocity Errors (p. 28).
*Short Circuit Detected Output to output, output to ground, internal
PWM bridge fault.
Short circuit has been removed.
Over Current (Latched) Output current I
2
T limit has been
exceeded.
Amplifier is reset and re-enabled.
*Latched by default.