CSD Series Variable Frequency AC Drive
MOTORTRONICS
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Table 6 A - Motor Rotation Verification
This chapter deals with the basic start up of the drive. The procedures
range from the first power off checks to actual motor operation. It
assumes all of the program settings are left at the factory values.
WARNING!
This chapter deals with potentially lethal voltage levels. You
must be certain that personnel are thoroughly trained in the
applicable safety precautions before proceeding with this
section! Always make sure the keypad display is off, the red
charge LED on the PC board is off and the DC bus is completely
discharged before adding or changing wiring!
6.1 Checks Before Power up
Please check these points before you apply power to the drive:
• Confirm the input power wiring is connected to terminals L1, L2, L3
or L1, L2 for single-phase input applications (L1/L3 for CSD-230).
• Warning: DO NOT connect the incoming power to the drive
output terminals. The unit will be damaged!
• Verify the incoming line voltage is within the unit’s specifications
and is balanced to within 2%. If not, add an AC input line reactor to
prevent possible drive damage (3% impedance, minimum).
• Confirm the motor wiring is connected to terminals T1, T2, T3 and
free from grounds.
• Make sure there are no loose wire strands.
• Be sure all screw connections are tight.
6.2 Checking Motor Rotation
CAUTION!
If possible, you should uncouple the motor from the driven
machinery to prevent system damage if the motor is turning in
the wrong direction. The three-phase, AC induction motor may
rotate either clockwise or counterclockwise, depending upon
the phase sequence of the applied power. Before you run the
machine, you must first check the direction of the motor rotation.
This is best accomplished by giving a brief jog command. If the
rotation is wrong, you should remove power from the drive, wait
for the charge lamp to turn off and switch any two of the three
motor leads.
Note: Switching the input power leads feeding the drive unit will not
change direction of motor rotation.
Chapter 6 - Initial Start Up
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