IAI America ERC3 - Manual (Page 301)

Chapter 5 Power-saving Function (Automatic Servo-of
f and Full Servo Functions)
5.3 MEC Mode 1, 2 and 3
291
5.3 MEC Mode 1, 2 and 3
The setting of power saving function for MEC Mode 1 and 2 can be conducted on MEC PC
Software or CON-PTA. The setting of power saving function for MEC Mode 3 cannot be
conducted in the try run of Quick Teach.
5.3.1 Automatic Servo-off Function
To have the automatic servo-off function activated, set to “Activate” in “Power Saving” in the
operational condition table.
Automatic Servo-off function automatically turns the servo OFF in certain time after positioning
process is finished. Servo is automatically turned ON and positioning is conducted once the
next positioning command is issued. Power consumption is reduced since the retaining current
does not flow during a stop.
The time setting from positioning complete till servo-off is to be established in the parameter.
(Note) SV of ERC3 Motor Unit flashes in green while the automatic servo is OFF.
Status Display LED flashes in green when using PIO Converter.
(1) Time Setting Till Automatic Servo-off
The time from positioning complete till servo-off can be set in seconds [sec] as the unit of
time in the parameter shown below.
Parameter No. Description
10 Auto Servo-motor OFF Delay Time 1 (Unit: sec)
(2) Position Detecting Signal Condition When Auto Servo-off Selected
During a positioning operation, position detecting signals LS0 to LS2 remain turned ON if the
actuator is in the range of the positioning band of the target position even though the servo is
turned OFF with the automatic servo-off function.
Operation of actuator
Positioning
operation
Automatic servo
OFF standby
Servo OFF
Positioning
operation
Servo Condition ON ON OFF ON
Limit Switch Output LS**=OFF LS**=ON LS**=ON PE**=OFF
Servo OFF Delay
Time
(Parameter No.10)
(3) Positioning Completion Signal Condition When Auto Servo-off Selected
The servo will not turn OFF with the automatic servo-off function during pressing operation
when the pressing function is used. The servo turns OFF only when the pressing operation is
missed.
The positioning complete signals PE0 to PE2 turn OFF while the servo is OFF.
Operation of actuator
Pressing
operation
Automatic servo
OFF standby
(Pressing missed)
Servo OFF
(Pressing
missed)
Pressing
operation
Servo Condition ON ON OFF ON
Current position number
output
PE**=OFF PE**=ON PE**=OFF PE**=OFF
Servo OFF Delay
Time
(Parameter No.10)