Accelnet & Stepnet Plus Panels User Guide
16-01339 Rev 07
F
AULT
D
ESCRIPTIONS
The set of possible faults is described below. For details on limits and ranges, see Fault Levels (4.17).
Fault Description
Fault Occurs When…
Fault is Corrected When…
* Short Circuit
Detected
Output to output, output to ground, internal PWM bridge
fault.
Short circuit has been removed.
* Amp Over
Temperature
Drive
’s internal temperature exceeds specified
temperature.
Drive temperature falls below specified
temperature.
* Motor Over
Temperature
Motor over-temperature switch changes state to indicate
an over-temperature condition.
Temperature switch changes back to
normal operating state.
Over Voltage
Bus voltage exceeds specified voltage limit.
+ DC bus voltage returns to specified
voltage range.
Under Voltage
Bus voltage falls below specified voltage limit.
+ DC bus voltage returns to specified
voltage range.
* Feedback error
Over current condition detected on the output of the
in5 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 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.
* Following Error
User set following error threshold exceeded.
See
Position and Velocity Errors (3.13).
Command Input
Fault
Loss of PWM input, or network command data
PWM signals restored, network
communications resume
Motor Wiring
Disconnected
Used with motor brakes, a programmable time during
which current-flow in the motor will be tested before the
brake is released. If current is not detected, it is a fault.
Motor current is detected during
programmable delay before brake is
released.
Over Current
(Latched)
Optional: The
I
2
T
current-limit for the drive has been
reached
Reduce drive current
* Configured as
latching
by default. Programmable to be
non-latching
.