Zero Return Function - Omron SYSDRIVE RX Series User Manual

4-3 Functions When Option PG Board (3G3AX-PG01) Is Used

Zero Return Function

This function performs three types of zero return operations depending on the setting of zero return
mode P068. When zero return is complete, the current position is cleared to zero.
You can select the zero return direction in zero return direction selection P069.
If zero return is not performed, the Inverter performs position control with the position at power-on
defined as the origin.
<Low-speed zero return (P068 = 00)>
ORG terminal
ORL terminal
4
Output
frequency
<High-speed zero return 1 (P068 = 01)>
ORG terminal
ORL terminal
Output
frequency
(1)
<High-speed zero return 2 (P068 = 02)>
ORG terminal
ORL terminal
Output
frequency
Z pulse
4-135
ON
(2)
Low-speed zero return
frequency (P070)
(3)
(1)
Origin
ON
(2)
High-speed zero return
frequency (P071)
(3)
Origin
(4)
(5)
Low-speed zero return
frequency (P070)
ON
(2)
High-speed zero return
frequency (P071)
(3)
(1)
(6)
(4)
(5)
Low-speed zero return
frequency (P071)
ON
Position
ON
Position
ON
Low-speed zero return
frequency (P070)
(7)
Origin Position
(1) The Inverter accelerates to the low-
speed zero return frequency
according to the acceleration time
setting.
(2) The Inverter runs at the low-speed
zero return speed.
(3) The Inverter performs positioning
when the ORL signal is input.
(1) The Inverter accelerates to the high-
speed zero return frequency
according to the acceleration time
setting.
(2) The Inverter runs at the high-speed
zero return frequency.
(3) The Inverter starts deceleration when
the ORL signal is turned on.
(4) The Inverter runs in reverse at the
low-speed zero return frequency.
(5) The Inverter performs positioning
when the ORL signal is turned off.
(1) The Inverter accelerates to the high-
speed zero return frequency
according to the acceleration time
setting.
(2) The Inverter runs at the high-speed
zero return frequency.
(3) The Inverter starts deceleration when
the ORL signal is turned on.
(4) The Inverter runs in reverse at the
low-speed zero return frequency.
(5) The Inverter starts deceleration when
the ORL signal is turned off.
(6) The Inverter runs forward at the low-
speed zero return frequency.
(7) The Inverter performs positioning at
the first Z-pulse position after the
ORL signal is turned on.