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13 Diagnostics
There are many different tools available to the user to help
diagnose problems or errors in the Unidrive SP and
SM-EZMotion module. The most common tools used are
the Error Codes, Analog Outputs, and PowerTools Pro
utilities such as the Watch Window, Fault View, Status Bar,
and Online View Tabs. Any or all of these can be used to
figure out why an application may not be running properly.
The following section gives detailed information about
each of the tools listed above.
13.1 Errors and Error Codes
The Unidrive SP and SM-EZMotion module fault handling
system is made of a series of Trips, Trip Codes, Errors, and
Error Codes. Following is a definition of each.
A Trip is an action that happens in the Unidrive SP that
causes the drive bridge to be inhibited therefore stopping
all motion. When the drive inhibits, the drive does not have
control of the motor/load.
An Error is an action that happens in the SM-EZMotion
module or Unidrive SP that may or may not cause the
Unidrive SP to Trip. Most of the Errors that occur in the
SM-EZMotion module will cause a Trip on the drive.
Following is a description of the Errors Handling System
used by the SM-EZMotion module
When the SM-EZMotion module has an error (i.e. Program
- Divide By Zero Error), it sends a signal to the Unidrive SP
that the error occurred. The SP then recognizes the error
in the module by causing the drive to trip. The specific trip
that will be displayed on the SP depends on the slot
number that the SM-EZMotion module is located in. The
drive trip will be a Sl#.Er trip where # indicates the slot #
that module error occurred in.
The Unidrive SP Trip Log will be updated with the Sl#.Er
trip. To find out what the specific error in the module was,
the user needs to query parameter MM.50 where MM is 15,
16, or 17 depending on the slot # of the module. Parameter
MM.50 stores the error code for the specific error that
occurred.
Following is a list of the Errors that can occur in the
SM-EZMotion module along with Error Codes, reset
methods, and potential causes for each fault.
Error Code
(x.50)
Cause
Trip?
Error Possible Reason Possible Solution
41 Y
SP Parameter Access Error -
Parameter Doesn't Exist
The SP Menu Parameter that you are
trying to read from or write to does not
exist.
Please double check the parameter
number
42 Y
SP Parameter Access Error -
Parameter is Read Only
The SP Menu Parameter that you are
trying to write to is a Read Only
parameter
Avoid writing to Read Only parameters.
Use Drive Menu Watch view in
PowerTools Pro, or Unidrive SP User
Guide to verify parameter accessibility
43 Y
SP Parameter Access Error -
Parameter is Write Only
The SP Menu Parameter that you are
trying to read from is Write Only
Avoid reading from Write Only
parameters. Use Drive Menu Watch view
in PowerTools Pro, or Unidrive SP User
Guide to verify parameter accessibility
44 Y
SP Parameter Access Error - Written
Value Out of Range
The value you are trying to write to the
SP Menu Parameter is out of range.
Modify value that you are trying to write
so that it is within valid range of the
parameter. Use the Unidrive SP User
Guide to verify the range of the parameter
and try again
73 Y SP Database Setup Error
74 Y Module Overheat Error
SM-EZMotion module temperature
has exceeded 83 degrees Farenheit
Select lower switching frequency in
PowerTools Pro configuration, or reduce
motion performance (i.e. lower accel/
decel, lengthen dwells). If problem
persists, please contact factory
101 Y Invalid Configuration Error
102 Y NVM Invalid Error
103 Y Power Up Test Failure Error
SM-EZMotion module Power Up Test
failed
Cycle power to the system. If problem
persists, please contact factory