Filter
Top Products
MID-7654/7652 Servo Power Motor Drive User Guide 18 ni.com
Depending on your motor, you may need to reverse the connections shown
in Figure 7, as there is no industry standard for direction of movement
relative to the positive and negative motor inputs. Table 8 shows the
National Instruments motion control standard directional polarity.
Figure 8 shows clockwise and counter-clockwise motor rotation.
Figure 8. Clockwise and Counter-Clockwise Motor Rotation
Table 8. National Instruments Standard Directional Polarity
Commanded
Direction
Description
Motor Signal
Relationship
Command
Signal
Forward Clockwise (CW) facing
motor shaft
Motor – is greater than
Motor +
Positive voltage
Reverse Counter-clockwise (CCW)
facing motor shaft
Motor + is greater than
Motor –
Negative voltage
CCW
CW