IAI America ERC3 - Manual (Page 273)

Chapter 4 Operation
4.4 Operation in MEC Mode 1 and 2 (Operation with PLC)
263
[Auto motor power (Auto servo) OFF]
The motor power (servo) will turn off automatically upon elapse of a specified period after
completion of positioning. When the next positioning command is issued, the motor power
(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 motor power (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 Instruction, the motor power (servo) does not turn off automatically while the
actuator is pushing the work part.
If the actuator has missed the work part, the motor power (servo) turns off automatically.
Once the motor power (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 any Instruction involving auto motor power (servo) OFF.
Move signal 1 ST0
Move signal 2 ST1
Actuator movement
Servo status
Auto servo OFF mode
(A green LED blinks)
T: Time set by parameter No
Do not use
push function
Start point detection LS0
End point detection LS1
Intermediate point detection LS2
Use push
function
Positioning to start point complete PE0
Positioning to end point complete PE1
Positioning to intermediate point complete PE2