Hitachi SJ700-2 instruction manual Forward direction at the low-speed

(1)

<3> High-speedzero-return 2

ORL terminal Output frequency

ORG terminal

O

ORL terminal Output frequency

(1)

<2> High-speedzero-return

ON

ORG terminal

Chapter 4 Explanation of Functions

4.3.16 Zero-return function (ORG, ORL)

- One of three types of zero-return operations can be selected by zero-return mode selection (P068). When a zero-return operation ends, the current position counter is cleared (to 0).

- Use zero-return direction selection (P069) to select the direction of zero-return operation.

- If zero-return operation is not performed, position control is performed based on the assumption that the motor position detected at power-on is the origin.

<1> Low-speedzero-return

ON

(2)

Low-speed zero-return speed (P070)

(3)

OriginPosition

(1)The inverter accelerates the motor for the specified acceleration time to the low-speed zero-return speed.

(2)The inverter runs the motor at the low-speed zero-return speed.

(3)The inverter performs positioning when the ORL signal is input.

ON

ON

(2)High-speed zero-return

speed (P071)

(3)

Origin

Position

(5)(4)

Low-speed zero-return speed (P070)

<1> The inverter accelerates the motor for the specified acceleration time to the high-speed zero-return speed.

<2> The inverter runs the motor at the high-speed zero-return speed.

<3> The inverter starts deceleration when the ORL signal is turned on. <4> The inverter runs the motor in the reverse direction at the low-speed zero-return speed.

<5> The inverter performs positioning when the ORL signal is turned off.

						<1> The inverter accelerates the
ORG terminal						motor for the specified acceleration
		ON
						time to the high-speed zero-return
ORL terminal
			ON			speed.
Output frequency	(2)					<2> The inverter runs the motor at the
			(3) Low-speed zero-return speed			high-speed zero-return speed.
	(1)					<3> The inverter starts deceleration
					(P070)	when the ORL signal is turned on.
	(6)		(7)			<4> The inverter runs the motor in the
			Origin Position			reverse direction at the low-speed
	(5)					zero-return speed.
			(4)
			high-speed zero-return speed			<5> The inverter starts deceleration
				(P071)		when the ORL signal is turned off.
Z pulse						<6> The inverter runs the motor in the
						forward direction at the low-speed
						zero-return speed.

<7> The inverter performs positioning at the first Z pulse position after the ORL signal is turned on.

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