H u d s o n M a n u a l / R e v . 1 . 2 1
2 0
T
EKNIC
,
I
NC
.
P H O N E ( 5 8 5 ) 7 8 4 - 7 4 5 4
Q: Do I need the optional motor shaft seal?
A:
For extra protection beyond the standard double-sealed ball bearings, an
optional dynamic shaft seal is available. The seal is appropriate when the
motor face (side with the shaft comes out) will be exposed to potentially
damaging particulate matter generated during machine operations.
Note:
The shaft seal option is
not available for 1/4" shaft NEMA 23 motors
.
Q: How do I tune a Hudson motor?
A:
Please consult the servo drive manufacturer for wiring and tuning
instructions.
Tip:
Hudson servo motors have relatively fast electrical time constants. As a
result, they respond very rapidly to changes in winding current which allows
the motor to follow dynamic commands very quickly. If less aggressive servo
response is required for an application, it may be advisable to reduce the
drive's current or torque loop gains.
Q: How can I change a motor’s “sense of direction”?
A:
Some drives may include firmware or software controls that allow you to
reverse motor shaft direction by changing a setting. Consult the servo drive
manufacturer for more information.
In some scenarios, you may need to reverse the motor’s sense of positive
and negative motion by modifying the motor cable. Assuming you have a
properly operating motor,
except
that direction of rotation is reversed,
swapping the following signals will change the direction of rotation:
Motors with Differential Encoders
•
Swap Phase S with Phase T
•
Swap Comm R-S with Comm T-R
•
Swap Enc A with Enc A~
Note:
Make wiring changes at the motor extension cable and
not at the
motor’s pigtail connector
. This generally saves time, money, and preserves
the motor warranty.
