Toshiba TOSVERT VF-AS3 Manual page 12
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Also See for TOSVERT VF-AS3:
- Instruction manual (622 pages) ,
- Manual (69 pages) ,
- Quick start manual (68 pages)
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2.3.1.2
How to input pulse train when A510=3
The following are how to input a pulse train and parameter setting.
• Input a pulse train from the S4 and S5 terminal. Set F146=1 and F147=1.
The number of command pulses is "number of pulses input from the S4 terminal - number of pulses input
from the S5 terminal."
Therefore, if pulses are input in S4, the motor is moved in the positive direction. If pulses are input in S5,
the motor is moved in the negative direction.
• Set how to clear pulses in pulse train input with A537.
• When A537=0, pulses are cleared at the moment when the pulse train position command clear
signal (input terminal function 184/185) is turned ON from OFF.
• When A537=1, pulses are cleared continuously when the pulse train position command clear signal
(input terminal function 184/185)=ON.
(Caution)
• When inputting a pulse train, the excessive amount at the time of stop can be reduced by reducing the
pulse train frequency at input start and input end.
• When pulses are cleared, the current position and the target position are set to 0. Clear pulses after
confirming that positioning is completed.
• When A510=3, do not input a pulse train to the S4 terminal and the S5 terminal at the same time.
2.3.2
Operation style
Perform positioning control by pulse train input setting in the following procedure.
(1) Turn ON the positioning preparation signal (input terminal function 178/179).
(2) Turn ON the run signal (input terminal function 2/3 or 4/5).
Then, the motor is in the servo lock status.
(3) Input the command pulse according to the desired position command.
The motor rotates so that the load machine should move to the target position specified by the command pulse.
(4) 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.
2.3.3
Caution
• Change the setting of A510 after turning OFF the positioning preparation signal (input terminal function 178/179)
and run signal (input terminal function 2/3, 4/5).
• Positioning control and the PID function cannot be used at the same time.
When A510=2 or 3, the normal PID function is disabled.
• When the run signal is turned OFF during positioning control, positioning control is stopped, and the motor is
decelerated and stopped in the deceleration time set in A511. In the deceleration stop status, the number of
command pulses and the number of detected pulses are different. Clear the current position before performing
positioning control again.
For how to clear the current position, refer to 2.4.
• When the positioning preparation signal is turned OFF during positioning control, E-46 trip occurs.
• To switch from positioning control to speed control, turn OFF the run signal during positioning control, and turn
OFF the positioning preparation signal after the inverter stops.
• If the current position becomes out of the range of - (A520, A521) to (A518, A519) during positioning control, the
position limit excess signal (output terminal function 214/215) is turned ON.
When A522=0, positioning control is continued as it is, however, E-47 trip occurs when A522=1. Use this
function to prevent the machine from exceeding the range of movement.
• When movement in the same direction is repeated, clear the current position as necessary so that the current
position should not be out of the range of - (A520, A521) to (A518, A519).
For how to clear the current position, refer to 2.4.
• This function is available with the following speed feedback detection.
- PG feedback option (VEC008Z)
- resolver option (VEC010Z)
• This function is NOT available with the speed feedback from S4, and S5 terminal.
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