Toshiba TOSVERT VF-AS3 Manual page 14

2.4.1 0 point ignore method (A527=0, 10)
• Set A527=0 or 10.
• When A527=0, the position when the positioning preparation signal (input terminal function 178/179) is turned
ON is (A528, A529).
• When A527=10, the position when the positioning preparation signal (input terminal function 178/179) is turned
ON is (A528, A529).
• In the case of positioning control by pulse train input (A510=2, 3), the target position is initialized to 0.
(Caution)
• Perform current position clearing operation (ON/OFF of the positioning preparation signal) during stop or speed
control (when position control is OFF).
• In the case of positioning control by pulse train input (A510=2, 3), use with A528, A529=0.
2.4.2 0 point signal method (A527=1, 11)
• Set A527=1 or 11.
• When A527=1, the position when the origin position setting signal (digital input: 180/181) is turned OFF from ON
is (A528, A529).
• When A527=11, the position when the origin position setting signal (digital input:180/181) is turned OFF from
ON is -(A528, A529).
• In the case of positioning control by pulse train input (A510=2, 3), the target position is initialized to 0.
(Caution)
• Perform current position clearing operation (ON/OFF of the origin position setting signal) during stop or speed
control (when position control is OFF).
• In the case of positioning control by pulse train input (A510=2, 3), use with A528, A529=0.
2.4.3 0 point dog method (A527=2, 12)
• To use this method, input of the PG option encoder Z phase signal is required.
• Set A527=2 or 12.
• When A527=2, if the near point dog signal (digital input terminal function 186/187) and the run signal (digital
input terminal function 2/3 or 4/5) are turned ON with the positioning preparation signal (digital input terminal
function 178/179) ON, the frequency is accelerated to -Sr1 in the acceleration time of A547 regardless of the
setting of A510. (The position moves in the negative direction)
• Next, when the origin position setting signal (digital input terminal function 180/181) is turned ON, the frequency
is decelerated from -Sr1 to the return to origin creep frequency (-A530) in the deceleration time A548.
• When the origin position setting signal is turned OFF in that status, the first Z phase position from that time is set
to (A528, A529) and positioning control is performed at the origin (0).
• When the positioning control settles and the deviation between the target position and the current position
becomes ±F381 or less, the positioning completion signal (output terminal function 118/119) is turned ON. In this
status, turn OFF the near point dog signal (digital input terminal function 186/187).
• When A527=12, if the near point dog signal (digital input terminal function 186/187) and the run signal (input
terminal function 2/3 or 4/5) are turned ON with the positioning preparation signal (input terminal function 178/
179) ON, the frequency is accelerated to -Sr1 in the acceleration time of A547 regardless of the setting of A510.
(The position moves in the positive direction)
• Next, when the origin position setting signal (digital input terminal function 180/181) is turned ON, the frequency
is decelerated from -Sr1 to the return to origin creep frequency (A530) in the deceleration time A548.
• When the origin position setting signal is turned OFF in that status, the first Z phase position from that time is set
to -(A528, A529) and positioning control is performed at the origin (0).
• When the positioning control settles and the deviation between the target position and the current position
becomes ±F381 or less, the positioning completion signal (digital output terminal function 118/119) is turned ON.
In this status, turn OFF the near point dog signal.
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