Emerson P/N 400361-00 manual Errors and Error Codes, Diagnostics 117

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	Cause	Error	Possible Reason	Possible Solution
(x.50)	Trip?
		SP Parameter Access Error -	The SP Menu Parameter that you are	Please double check the parameter
41	Y		trying to read from or write to does not
		Parameter Doesn't Exist		number
			exist.
			The SP Menu Parameter that you are	Avoid writing to Read Only parameters.
		SP Parameter Access Error -		Use Drive Menu Watch view in
42	Y		trying to write to is a Read Only
		Parameter is Read Only		PowerTools Pro, or Unidrive SP User
			parameter
				Guide to verify parameter accessibility
				Avoid reading from Write Only
43	Y	SP Parameter Access Error -	The SP Menu Parameter that you are	parameters. Use Drive Menu Watch view
		Parameter is Write Only	trying to read from is Write Only	in PowerTools Pro, or Unidrive SP User
				Guide to verify parameter accessibility
				Modify value that you are trying to write
		SP Parameter Access Error - Written	The value you are trying to write to the	so that it is within valid range of the
44	Y			parameter. Use the Unidrive SP User
		Value Out of Range	SP Menu Parameter is out of range.
				Guide to verify the range of the parameter
				and try again
73	Y	SP Database Setup Error
				Select lower switching frequency in
			SM-EZMotion module temperature	PowerTools Pro configuration, or reduce
74	Y	Module Overheat Error		motion performance (i.e. lower accel/
			has exceeded 83 degrees Farenheit
				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	Cycle power to the system. If problem
			failed	persists, please contact factory

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