Panasonic MINAS-BL GP series Instructions Manual page 28

Detail of parameters
e.g. 2: When homing consists of home sensor only.
(1) When the starting point is
other than home sensor.
(2) When the starting point is
upon the home sensor.
Be sure to set the homing direction so that homing operation is executed in the
direction where home sensor is located. In this example, set "Pr41 Detects the homing
direction in – direction".
Home sensor homing 3 (Pr40 = 5) (Only for rotation system)
e.g. : When "Pr41 Detects the homing direction in + direction" is set
(1) When the starting
point is out of the
Starting
home sensor.
point
(2) When the starting point
is upon the home sensor.
Set this option when the machine belongs to rotational system and reversing is not
desired.
In this mode, the motor always runs in the set homing direction, and the edge of home
sensor is detected and set to the home. (In this case, runs in + direction only with no
reversing.)
If a limit sensor in running direction is detected during homing, homing error
HO) is found.
Mechanical end
Homing direction(−)
Coordinate system(+)
Home sensor
Home
Starting
point
Home
Starting
point
Homing direction(+)
Coordinate system(+)
Home sensor Home sensor
Home
Home
Starting point
Machine 1 rotation
－ 54 －
Limit sensor homing (Pr40 = 2)
e.g. : When "Pr41 Detects the homing direction in − direction" is set.
(1) When the starting
point is not upon the
limit sensor in − direction.
(2) When the starting
point is upon the limit
sensor in − direction.
In using this mode, the motor at the home position is within the limit sensor, therefore
be sure to set the home offset (Pr47). When the offset is set to –100, the point which is
moved 100 pulses in + direction as viewed from the edge of limit sensor in - direction is
set to the home. (Set a value of plus and minus opposite to the desired travel direction as
an offset.)
Bumping homing (Pr40 = 3)
e.g. : When "Pr41 Detects the homing direction in − direction" is set.
When the torque value has exceeded the setting (Pr45) for preset time (Pr46), homing is completed.
During operation of this mode, the value of torque limit is restricted by bumping torque
detection value (Pr45).
In bumping homing operation, when limit sensor in operation direction is detected,
homing error
In using this mode, the motor at the home position is in contact with the mechanical end,
therefore be sure to set the home offset (Pr47). (Set a value of plus and minus opposite
to the desired travel direction as an offset.)
<Caution>
In setting the bumping homing, too high homing speed or too large torque limit causes
excessive shock, which may give damage to the machine or motor. Restrict the homing speed
to approx 100 r/min on motor shaft, and bumping torque limit below rated motor torque.
(E-
Home resetting (Pr40 = 4)
In this mode, the position where homing start signal is input is set to the home (0 posi-
tion), and the motor does not run but homing operation is completed.
− direction
limit sensor
Offset
Home
Offset
Home
Starting
point
Mechanical end
Coordinate system(+)
Offset
Home
(E-H0) is found.
－ 55 －
Homing direction(−)
Coordinate system(+)
+ direction
limit sensor
Starting
point
Homing direction(−)
Starting point