SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.
SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.
SJ700-2 Instruction Manual NT204DX - Hitachi America, Ltd.
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Chapter 4 Explanation of Functions<br />
4.3.16 Zero-return function (ORG, ORL)<br />
- One of three types of zero-return operations can be selected by zero-return mode selection (P068).<br />
When a zero-return operation ends, the current position counter is cleared (to 0).<br />
- Use zero-return direction selection (P069) to select the direction of zero-return operation.<br />
- If zero-return operation is not performed, position control is performed based on the assumption that the<br />
motor position detected at power-on is the origin.<br />
Low-speed zero-return<br />
ORG terminal<br />
ORL terminal<br />
Output frequency<br />
(1)<br />
(2)<br />
ON<br />
(3)<br />
ON<br />
Low-speed zero-return speed<br />
(P070)<br />
(1) The inverter accelerates the motor for<br />
the specified acceleration time to the<br />
low-speed zero-return speed.<br />
(2) The inverter runs the motor at the<br />
low-speed zero-return speed.<br />
(3) The inverter performs positioning<br />
when the ORL signal is input.<br />
Origin<br />
Position<br />
High-speed zero-return<br />
ORG terminal<br />
O<br />
ORL terminal<br />
Output frequency<br />
(1)<br />
(2)<br />
High-speed zero-return 2<br />
ON<br />
Origin<br />
(5)<br />
(3)<br />
ON<br />
High-speed zero-return<br />
speed (P071)<br />
Position<br />
(4)<br />
Low-speed zero-return speed<br />
(P070)<br />
The inverter accelerates the motor<br />
for the specified acceleration time to the<br />
high-speed zero-return speed.<br />
The inverter runs the motor at the<br />
high-speed zero-return speed.<br />
The inverter starts deceleration<br />
when the ORL signal is turned on.<br />
The inverter runs the motor in the<br />
reverse direction at the low-speed<br />
zero-return speed.<br />
The inverter performs positioning<br />
when the ORL signal is turned off.<br />
ORG terminal<br />
ON<br />
The inverter accelerates the<br />
motor for the specified acceleration<br />
time to the high-speed zero-return<br />
ORL terminal<br />
ON<br />
speed.<br />
(2)<br />
Output frequency<br />
The inverter runs the motor at the<br />
high-speed zero-return speed.<br />
(3)<br />
Low-speed zero-return speed The inverter starts deceleration<br />
(1)<br />
(P070)<br />
when the ORL signal is turned on.<br />
(6) (7)<br />
The inverter runs the motor in the<br />
reverse direction at the low-speed<br />
Origin Position<br />
(5) (4)<br />
zero-return speed.<br />
high-speed zero-return speed<br />
(P071)<br />
The inverter starts deceleration<br />
when the ORL signal is turned off.<br />
The inverter runs the motor in the<br />
Z pulse<br />
forward direction at the low-speed<br />
zero-return speed.<br />
The inverter performs positioning at the first Z pulse position after the ORL signal is turned on.<br />
4 - 110
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