6-7-14
Restarting Positioning
If the motor moves out of the Restarting Positioning Range Setting (d278) while operation is still ON
after positioning is performed by position control, the inverter automatically starts repositioning the mo-
tor again. When the motor is in the Positioning Completed Range (d239) even if outside of the position
restarting range, the motor does not operate.
When the motor current position moves out of the range ±d278 from the target value, it moves to the
target position.
The restarting positioning function is useful in V/f control. In vector control, servo lock operation is per-
formed after completion of position control operation, so processing to stop at the target position func-
tions at all times.
When the current position is overwritten during a stop, the restarting positioning function is disabled.
Parameter No. Function name Data
Default da-
ta
Unit
d239
Positioning Completed
Range
0 to 9999 1 -
d278
Restarting Positioning
Range Setting
0: Invalid
9999 -
1 to 9999
6-7-15
Brake Control during Position Control
The output state of the brake signal during a position control stop can be set at bit 6 of Brake Control
Operation Selection (J96).
At Brake Release
In V/f control, with the RUN command ON, when the output current is at the current set in Brake Con-
trol Brake-release Current (J68) or higher
, the frequency reference is at the frequency set in Brake
Control Brake-release Frequency (J69) or higher
, and the time set in J70 elapses, “BRK” is turned ON
regardless of the setting of J96 bit 6.
In vector control, when J96 bit 6 = 0, the RUN command is ON, the output current is at the current set
in Brake Control Brake-release Current (J68) or higher
, the torque command is at the torque set in
Brake control Brake-release Torque (J95) or higher, and the time set in J70 elapses, “BRK” is turned
ON.
In vector control, if the output current is at the current set in Brake Control Brake-release Current (J68)
or higher, the torque command is at the torque set in Brake control Brake-release Torque (J95) or
higher, and the time set in Brake Control Brake-release Timer (J70) elapses when J96 bit 6 = 1 and
the servo lock state is entered by the servo lock terminal turning ON, the brake release signal “BRK” is
turned ON even if the RUN command is OFF.
At Application of Brake
When a stop is made at the target position with J96 bit 6 = 0, the brake release signal “BRK” is turned
ON when the time set at Brake Control Brake-applied T
imer (J72) elapses even if the RUN command
is ON.
6 Vector Control and Applied Functions
6-58
M1 Series Standard Type User's Manual (I669)
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