Baldor iMN1921 installation manual Communication, Motor control, Symptom Check

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6.2.3 Communication

If the problem is not listed below please contact Baldor Technical Support.

Symptom	Check

Cannot detect NextMove ST	Check that the NextMove ST is powered.
	Check that the serial lead is wired correctly and properly
	connected.
	Check that no other application on the PC is attempting to
	use the same serial port.

Cannot communicate with	Verify that WorkBench v5 is loaded and that NextMove ST is
the controller.	the currently selected controller.
	Check that the NextMove ST control card is correctly
	connected to the baseboard.

6.2.4 Motor control

Symptom	Check

Controller appears to be	Check that the connections between motor and drive are
working but will not cause	correct. Use WorkBench v5 to perform the basic system
motor to turn.	tests (see section 5.4).

A motor that is controlled by	Adjust the Spindle output’s offset potentiometer to remove
the analog output runs as	any offset voltage (see section 4.4.2).
soon as the controller is
switched on.	Use a digital output from the NextMove ST to control the
	enable input of the motor’s drive amplifier. This will allow the
	amplifier to be disabled at startup.
	Verify that the NextMove ST and drive are correctly
	grounded to a common earth point.

Motor is under control, but	The motor is not maintaining synchronization with the
when moved to a position	NextMove ST drive output signals due to excessive
and then back to the start it	acceleration, speed or load demands on the motor.
does not return to the same
position.	Check that the acceleration, speed and load are within the
	capabilities of the motor.

6-4 Troubleshooting

MN1921

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Contents NextMove ST Motion Controller Page Contents Operation General Information Safety Notice PrecautionsNextMove ST features MN1921 IntroductionReceiving and inspection Phase Units and abbreviationsIntroduction MN1921 Location requirements You should read all the sections in Basic InstallationIntroduction Package dimensions Mounting the NextMove STOther requirements for installation Basic Installation MN1921 Input / Output Connector locations Power connections Operation using combined drive and logic supplyOperation using separate drive and logic supplies Connecting separate drive and logic suppliesStepper axes 0-2 drive outputs Connecting a 4-wire motorStepper outputs Connecting a 6-wire motor Connecting a 8-wire motor Connecting a 8-wire motor, parallel windingsStepper axes 0-3 logic outputs Stepper output pin header J3, and output circuit shownAnalog I/O Analog inputsAnalog output Analog outputDigital I/O Digital inputsUsing a digital input as an Error input Using a digital input as a Limit or Home inputUsing a digital input as a Stop input Auxiliary Encoder inputs Auxstep IN, Auxdir IN, AuxzDigital outputs Digital output DOUT0 shownGlobalerroroutput keyword Error outputDriveenableoutput keyword Jumper settingsLocation Other I/ORS232 serial communication Pin Name Description2 50-pin edge connector RS232 serial port connectionsCan communication Typical can network connectionsJP1 This will connect an internal terminating resistor CANopen and Baldor canConnection summary minimum system wiring Host PCInput / Output MN1921 Starting the NextMove ST Connecting the NextMove ST to the PCInstalling WorkBench Preliminary checksPower on checks WorkBench Help fileStarting WorkBench MN1921 Operation Configuring an axis Selecting a scaleClick Apply Stepper axis testing Testing the outputDigital input/output configuration Digital input configurationDigital output configuration Saving setup information Loading saved information Problem diagnosis SupportMe featureNextMove ST indicators Status displaySurface mount LEDs D3, D4 and D16 Motor control Symptom CheckCommunication Input power Output power ValueEquivalent resolution ±10V input Common mode voltage rangeInput impedance 120 Input ADC resolution Bits Output current max Update interval ImmediateOutput current maximum, per axis Stepper axis 0-2 drive outputsUnit Value Maximum output frequency KHz 200 Output voltage Unit Value Output typeEnvironmental Unit Value SignalCan interface Channels Protocols CANopenIndex Index MN1921 Comments CommentComments MN1921 Page LT0184A00