IAI TB-02 - Page 217

4. Operation of SEP Related Controllers
205
[Auto servo OFF]
The servo will turn off automatically upon elapse of a specified period after completion of
positioning. When the next positioning command is issued, the servo turns on automatically
and positioning is performed. Since no holding current flows while the motor is at standstill,
power consumption can be reduced.
[Statuses of position detection output signals when the push function is not used]
Even when the servo is turned off, as long as the actuator is positioned within the positioning
band (parameter No. 1) the start point detection signal (LS0), end point detection signal (LS1)
or intermediate point detection signal (LS2) will turn ON according to the applicable position,
just like when a sensor is used. Accordingly, the position detection signal that has turned ON
will remain ON after completion of positioning unless the actuator moves.
[Status of position complete signals when the push function is used]
In push-motion operation, the servo does not turn off automatically while the actuator is pushing
the work part.
If the actuator has missed the work part, the servo turns off automatically.
Once the servo turns off, a position complete status is lost. Accordingly, the push complete
signal 0 (PE0), push complete signal 1 (PE1) and push complete signal 2 (PE2) will all turn
OFF regardless of the stop position.
Caution: No holding torque is applied in the auto servo OFF mode. Since the actuator will move in
this condition if an external force is applied, pay due attention to contact and safety when
setting an
y
o
p
eration involving auto servo OFF.
To change the travel speed for operation pattern (PIO pattern) 1, set the position at which to
change the speed, and the new speed, in addition to the position data.
Position settin
g
screen Speed Ch
g
Pos
Position
Data
[8]
Chan
g
e position [mm]
[9]
Chan
g
e speed [mm]
[0] Forward Position 60.00 30.00
[1] Backward Position 40.00 30.00
Move signal 1 (ST0)
Move signal 2 (ST1)
Actuator movemen
t
Servo status
A
uto servo OFF mode
(A green LED blinks)
T: Time set by parameter No
Start point detection (LS0)
End point detection (LS1)
Intermediate point detection (LS2)
Positioning to start point complete (PE0)
Positioning to end point complete (PE1)
Positioning to intermediate point complete
(PE2)