STAC6 Drives and Microstepping Motors:
User Manual
(Discontinued Product)
• 1.14 •
1:
H A R D W A R E
Figure 1.8: Encoder Dialog
ENCODER FEEDBACK OPTIONS
Stall Detection
continuously compares the actual motor position,
as reported by the encoder, against the theoretical motor position.
If the motor strays so far out of position that it can produce no
torque, a position fault occurs. This includes a motor at rest being
driven out of position by an external force. Check the box below
"Stall Detection" if the drive is desired to fault when the motor stalls.
This fault can be reported by the Fault output and cleared by the
Alarm Reset input (see I/O Dialog).
Stall Prevention
can prevent many stalls before they occur. The
STAC6 achieves this by using the encoder to monitor the lead angle
of the motor, a measure of torque utilization. If the motion profile
begins to demand more torque than the motor can produce, the
velocity is automatically reduced before the motor stalls. To engage
stall prevention, simply check the Stall Prevention box and enter the
maximum allowable torque utilization.
