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
1 8 7
T
EKNIC
,
I
NC
. T
EL
.
(585)
784-7454
P
RECISION
H
OMING
Precision Homing helps assure home position repeatability
even if the
Physical Home (sensor or hard stop) is not perfect, such as when a hard
stop wears out, shifts position, or becomes deformed
.
When set up for Precision Homing, ClearPath automatically calibrates
itself to the connected mechanical system
only the very first time
it
completes a homing operation. After successful calibration, Precision
Homing remains active, ensuring highly repeatable homing
even if the
physical home moves by up to
±
1/2 of a motor revolution
.
Load
Homing Direction
Motor
A
D
B
C
Precision Homing Nomenclature
(a)
Original Physical Home
- This is the Physical Home
reference
point found during the initial homing/calibration
operation. Note: This reference position is stored in the motor's
NV memory. It is not reset if power is cycled.
(b)
Current Physical Home
- This is the most recent Physical
Home found. This position will only be different from Original
Physical Home if the associated sensor or hard stop has moved
or drifted.
(c)
Max. Error Between Original (Calibrated) Physical
Home and Current Physical Home.
Precision Homing will
successfully complete as long as the Current Physical Home
position does not /- 1/2 rev from Original Physical
Home.
(d)
Final Position
after homing is complete (defined by the
Physical Home Clearance, and Offset Move Distance
parameters).