Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 300

• If STF(STR) is turned OFF during positioning or home position returning when Pr.1221 = "0 (initial value)" is set, it stops
in the time set as Pr.464 Digital position control sudden stop deceleration time.
When Pr.1221="0 (initial value)" is set
Position command
speed
0
Servo ON
(LX)
STF
• Turning ON the Sudden stop signal (X87) during positioning operation or home position return operation, the motor stops
in the setting time of Pr.464. To assign the X87 signal, set "87" in any of Pr.178 to Pr.189(Input terminal function
selection).
Position command
speed
0
Servo ON
(LX)
STF
ON
X87
• The input logic of the X87 signal Pr.1292 Position control terminal input selection can be set using.
Pr.1292 setting
Normally open input (NO contact
0 (initial value)
input specification)
Normally closed input (NC contact
1
input specification)
NOTE
• When deceleration time longer than the normal deceleration time (including Pr.1223) is set in Pr.464, the normal deceleration
time is applied.
• The X87 signal is effective during position control JOG operation.
 Roll feed mode (Pr.1293)
• If the roll feed mode is enabled in an application that needs repeated positioning in the same direction, such as a conveyor,
positioning can be performed repeatedly without position command overflow.
• When the roll feed mode is enabled (Pr.1293 = "1"), the position where the first position command is created is set as the
home position and the droop pulses are cleared.
When Pr.1293 = "1", simple positioning is available even if home position return cannot be completed.
• Positioning modes which enables the roll feed mode are the point table mode, the home position return mode, and the
JOG mode.
Time
Pr.464
ON
ON
Time
Pr.464
ON
ON
Input logic (X87)
5.5 Position control under vector control and PM sensorless vector control
When Pr.1221="1" is set
Position command
speed
0
Servo ON
(LX)
STF
ON
Time
ON
5. PARAMETERS
1
2
3
4
5
6
7
8
9
10
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