LIN ENGINEERING Page 10 Version 6.70
R701P User Manual 02/15/2022
7. CONFIGURING AND CONTROL OF THE R701P
Adjust Trimpot
This trimpot adjusts the motor for the smoothest possible low speed operation. Set the motor speed
to about ¼ revolutions per second, and then, using a flathead screwdriver turn the trimpot until a
distinct null is noted in the motor’s vibration. This will result in the most even microstep placement for
a given motor and power supply voltage. The trimpot is located on the opposite side of main
connector on the driver.
Auto Current Reduction
The R701P reduces motor phase current to 70% of the set value when the motor is holding. To
disable this feature, set SW9 “OFF”. Choices for hold current are 70% or 100% for the R701P.
NEMA 34 and NEMA 42 Motor
The R701P offers better performance options when using NEMA 34 or NEMA 42 sized motors. This
option will adjust the midband compensation circuit to optimize performance for larger frame size
motors. To enable this fuction, set SW10 to “OFF”. Size NEMA 17 and NEMA 23 motors should have
SW10 set to “ON”.
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