CENTENT CN0165, Operating Manual

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PERFORMANCE
19
0
1K 2K 3K 4K 5K 6K 7K 8K 9K 10K
50
100
150
200
250
300
350
400
REGION 1 REGION 2
TORQUE
POWER
FULL STEPS PER SECOND
TORQUE
(OZ/IN)
POWER
(WATTS)
Figure 9 - Torque & Power vs. Speed
Power is the product of speed and torque. Power remains constant in Region 2 in an ideal
step motor. In a real step motor there are speed related power losses (e.g., friction,
magnetic losses, windage) that result in a slope to the power curve. The intersection of
this slope and the speed axis determines the maximum speed of the motor.
THE CENTENT CN0165 DRIVE IS CAPABLE OF RUNNING STEP
MOTORS AT SPEEDS HIGH ENOUGH TO CAUSE DAMAGE TO
MOTOR SHAFT BEARINGS.
MOTOR WINDING CONFIGURATION
The customer has the option with six or eight lead motors of connecting the windings in
parallel or series configuration. For six lead motors, the series and parallel configurations
are also referred to as “full winding” and “half winding” respectively. Since there are no
configuration options for a four lead motor, it is considered to be in the parallel
configuration.
Parallel operation has twice the maximum motor power output of serial operation. The
speed to which constant torque is maintained is also doubled. This performance comes at
the expense of greater motor and drive heating. The performance of a six lead motor will
match that of an eight lead motor in the same winding configuration, assuming the
current ratings of the motors are the same.