Hitachi WJ200 Series

4−47
Limit signal of homing, Trigger signal of zero-return
These functions are used for homing performance.
One of three types of homing operations can be selected by homing mode selection
(P068). When a homing operation ends, the current position counter is cleared (to 0).
Use homing direction selection (P069) to select the direction of homing operation. If
homing 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 speed homing (P068=00)
<2> High speed homing (P068=01)
ORG
ORL
Output
freq.
ON
ON
Origin Position
(1)
(2)
(3)
Low speed homing
(P070)
(1) The inverter accelerates the moto
r
for the specified ramp time to the
low speed homing.
(2) It runs the motor at the low speed
homing.
(3) It performs positioning when the
ORL signal is given.
ORG
ORL
Output
freq.
ON
ON
Origin
Position
(1)
(2)
(3)
High speed homing
(P071)
(1) The inverter accelerates the moto
r
for the specified ramp time to the
high speed homing.
(2) It runs the motor at the high speed
homing.
(3) It starts deceleration when the OR
L
signal is turned on.
(4) It runs the motor in the reverse
direction at the low speed homing.
(5) It performs positioning when the
ORL signal is turned off.
(4)
Low speed homing
(P070)
(5)
(5)