User manual

PICDEM™ MC LV Development Board

8.2.3 The Motor Does Not Start When S2 or S3 is Pressed

Verify the power supply and motor connections:

• Verify that the power supply is connected to the board and is in working condition.

• Verify that the controller is in the correct socket; PIC18F on the “PIC” socket and

DSC on the “dsPIC” socket.

• Make sure the jumper settings are correct for the type of control selected.

• Verify that the motor connections on J9 are making proper contact.

• Check that the speed reference potentiometer (R14) has a sufficient level. Turn

the potentiometer clockwise slowly and check for motor rotation.

• Check for overcurrent condition. If the motor has overloaded or the Fault detection

circuit detects overcurrent, check LED D1. If it is blinking continuously, reset the

system by pressing S1. Also, check for potentiometer R60 for correct current

threshold level for the selected motor type. Rotate counterclockwise to increase

the current threshold level.

8.2.4 A Fault Condition Occurs While Accelerating the Motor

Try using a lower acceleration rate:

• If the motor still causes a Fault condition, check the motor power rating. It should

be within the board power rating specified.

• Check the potentiometer R60 level. Set R60 for the correct current threshold level

for the selected motor type. Rotate counterclockwise to increase the current

threshold level.

• Check for correct socket selection and jumper selections for the type of control

used.

• If using an alternative power supply for the motor, from the control power supply,

check for its current rating. The power supply should have equal or more current

capability than the motor used.

8.2.5 A Fault Condition Occurs When the Motor is Loaded