3.22EjemploDRM007 Co..

Operational Description
By pressing the push button labeled OPTIONS (S2) the following menu
options (defined in the following paragraphs) are displayed on the LCD:
• “Fault Occurred!!!”
• “Motor Stalled!!!”
• “BLDC WASH”
• “BLDC SPIN CW”
• “BLDC SPIN CCW”
• “SPEED DES +1980 CU +000”
• “BLDC STOP”
“Fault Occurred!!!” is a message display when an over voltage or over
current has activated the FAULT1 input signal. The motor is stopped
when this happens and the message is displayed.
“Motor Stalled!!!” is a message displayed when the motor is stalled.
“BLDC WASH” option is the typical washing cycle. The motor rotates in
both directions, clockwise and counterclockwise. To produce this
movement of the motor a defined look-up table of desired speeds is
accessed continuously.
“BLDC SPIN CW” option makes the motor rotate in a clockwise direction.
It is applied as a starting curve table and then the speed is maintained at
a desired value programmed in software.
“BLDC SPIN CCW” option behaves similar to “BLDC SPIN CW” but in
counterclockwise direction.
“SPEED” option displays the desired speed (‘DES’) programmed in
software and the current speed (‘CU’), both in RPMs with a direction sign
(‘+’ or ‘–’) corresponding to either clockwise or counterclockwise
direction.
“BLDC STOP” option is intended to stop the motor.
When the push button labeled ENTER (S3) is pressed, the option
showed on the LCD is executed. For example, if the option “BLDC SPIN
CW” is displayed on the LCD and this button is pressed then the spin
DRM007
BLDC Motor Control Board for Industrial and Appliance Applications
40 Operational Description MOTOROLA