LG Electronics 120S user manual Origin Detection by approximate origin

Chapter 7 Usage of Various Functions

(3)Origin Detection after Deceleration when Approximate origin turns on

This is the method using the approximate origin and origin signal and the action by origin return command is as follows.

(A)It accelerates to the setting origin return direction and acts by origin return high speed.

(B)In this case, if approximate origin as external input is entered, it decelerates and acts by origin return low speed.

(C)If encounters the origin signal as external input signal while the origin return low speed is active, the origin shall be determined and it stops.

Speed

Deceleration when approximate return “ON”

Origin return high speed

Origin return low speed

Approximate origin signal

Origin signal

Origin return command

Time Transfer amount after approximate origin “ON”

When origin return speed decelerates by approximate origin, the origin will not be determined by the origin signal.

1 rotation of SERVO motor (PG1 rotation)

(4)Origin Detection by approximate origin

This is the method using the approximate origin signal only.

Normal rotation

Reverse rotation

	Direction conversion at the rising edge of approximate origin signal
Origin return high speed	Direction conversion at the falling edge of approximate origin signal
	Origin return low speed
	Time
	Origin determination

External input high limit

Origin return command

Origin determined state

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