C
L E A R
P
A T H
M C / S D
U
S E R
M
A N U A L
R
E V
.
3 . 0 9
5 0
T
EKNIC
,
I
NC
. T
EL
.
(585)
784-7454
P
ULSES
P
ER
R
EVOLUTION
(PPR)
In Pulses Per Revolution (PPR) mode, the HLFB sends a user-selectable
number of pulses for each revolution of the motor. The choices are: 1, 2,
4, 8, or 16 pulses per revolution.
Notes
•
The frequency of output pulses is proportional to the speed of the
motor.
•
When motor speed is constant, the PPR pulses will exhibit a ~50%
duty cycle.
•
When the motor shaft is stopped, the HLFB output can be either
"fixed" high or "fixed" low.
•
As long as the motor maintains logic power, the output will
produce pulses corresponding to motor shaft rotation,
even if the
motor is disabled or in a shutdown
.
M
EASURED
T
ORQUE
In Measured Torque mode, the HLFB outputs a 45 Hz
or
482 Hz (user-
selectable) PWM waveform that varies in duty cycle between 5% and 95%
to indicate direction and magnitude of motor shaft torque as follows:
•
5% duty cycle = 100% peak torque, CW direction
•
50% duty cycle = zero torque
•
95% duty cycle = 100% peak torque CCW direction