137
Trouble Shooting
Trouble Shooting
Most problems encountered during the startup and operation of a B8000 Series
Smart Drive can be traced to a few basic causes such as mechanical problems,
incorrect or noisy signal wiring,attempting to operate beyond the system’s
capabilities,or software setup or programming errors.A combination of these
underlying problems can present an overwhelming variety of symptoms that make
it very dif ficult to track down the root cause of the difficulties.
A logical and methodical approach to trouble shooting is essential to isolating and
resolving these problems.The Smart Drives provide a number of tools to make this
task easier.The keypad is the most versatile of these troubleshooting tools.The
keypad will display error messages,I/O status,motor position,and can be used
to run programs in
TRACE
mode to aid in software debugging.
Servo Tuner
,
Application De veloper
, and terminal programs are also frequently used as trouble
shooting tools.
The monitor output port is also a powerful troubleshooting tool.It can be
configured to show actual and commanded velocity to help resolve move
performance difficulties.Configuring the port to output actual torque can be
helpful in determining when a move’s torque demands are starting to approach
your system’s theoretical limits.This mode can also be used to document your
machine’s torque safety margin.More details are available in the
Servo Tuner
manual or from Ser vo Tuner Help.
The following table will help you isolate some of the more common application
problems when using B8000 Smart Drive control/drive systems.
Symptoms and Solutions
Symptoms
Probable Causes
Possible Remedies
I/V Fault
Overvoltage due to excessive regen
Install an RPACK module for additional
energy from the motor.
regen capacity, or reduce the cycle time.
Reduce input voltage to allow for surges
Line Voltage exceeds 240VAC
or spikes caused by other equipment.
Replace shorted motor.
Over current due to a motor short.
Select the correct motor model AND
voltage from SETUP/MOTOR/TYPE.
Over current due to an improperly
tuned current loop.
Thermal
Motor winding temperature exceeded
Increase cooling:circulate more air past
Shutdown
135˚C,or the Smart Drive heatsink
heatsink,add -FK1 or FK2 fan kit,or
temperature exceeded 55˚C
reduce duty cycle.
Missing or damaged motor thermostat
Jumper Temp and Temp Ref together if
the motor has no thermostat.
Following
Too narrow a following error window.
Set the following error from the
Error
SETUP/ENC/FOL-ERR menu.
Commanded moves too aggressive for
system.
Reduce acceleration and velocity.
Mechanical binding causing excessive
Check for unusual binding.
following error.
Follow the tuning procedure outlined in
Poor or “soft”tuning allowing excessive
the
Servo Tuner
manual,or use the
following error.
default parameters.
Содержание B8962
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