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 5
T
EKNIC
,
I
NC
. T
EL
.
(585)
784-7454
T
YPICAL
H
OMING
S
EQUENCES
This section enumerates the main steps involved in the most common
ClearPath homing scenarios.
For the sake of discussion, we will assume that the ClearPath motor
described in this section is set to
home every time it is enabled
(as
opposed to homing only the first time it is enabled after power up).
A
UTOMATIC
S
WITCH
H
OMING
S
EQUENCE
1.
The user Enables ClearPath. (Enabling energizes the motor
coils and puts ClearPath in Automatic Homing mode.)
2.
ClearPath automatically moves the load toward Physical Home
(a sensor) at the user-specified acceleration, speed, and
direction.
3.
The sensor is actuated. The point of actuation is defined as
Physical Home. The Software Home (zero position) is defined
to be the Physical Home Clearance away from the Physical
Home.
4.
The motor begins to decelerate.
5.
The motor stops at some point past the sensor location
(determine by homing velocity and deceleration).
6.
ClearPath moves towards the offset location as defined by the
[Home Offset Move Distance] parameter. If this value is zero,
ClearPath moves to the Software Home (zero position).
7.
Homing is complete. ClearPath can now act on motion
commands.
A
UTOMATIC
H
ARD
S
TOP
H
OMING
S
EQUENCE
1.
The user Enables ClearPath. (Enabling energizes the motor
coils and puts ClearPath in Automatic Homing mode.)
2.
ClearPath automatically moves the load toward Physical Home
(a hard stop in this case) at the user-specified acceleration,
speed, and direction.
3.
The load hits the hard stop, triggering the Hard Stop Detection
algorithm. Holding torque against the hard stop is
automatically rolled back.
4.
Physical Home is established. This then defines the Software
Home(zero position) to be the Physical Home Clearance away
from the Physical Home.
5.
ClearPath moves away from the Physical Home to the offset
location specified in the [Home Offset Move Distance]
parameter. If this value is zero, ClearPath moves to the
Software Home(zero position).
6.
Homing is complete. ClearPath can now act on motion
commands.