Mitsubishi Electric FR-A820-00046 Instruction Manual page 376

Position control under vector control and PM sensorless vector control
Sudden stop (Pr. 464, Pr. 1221 and X87 signal)
● The operation performed during STF(STR)-OFF can be selected with Pr. 1221 "Start command
edge detection selection".
● 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".
command
Fig. 5-64:
● 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. For the X87 signal, set "87" in any of Pr. 178
to Pr. 189 (input terminal function selection) to assign the function to a terminal.
Fig. 5-65:
● The input logic of the X87 signal can be set using Pr. 1292 "Position control terminal input
selection".
Pr. 1292 setting
0 (initial value)
1
Tab. 5-61:
NOTES When deceleration time longer than the normal deceleration time (including Pr. 1223) is set in
Pr. 464, the normal deceleration time is applied to stop.
The X87 signal is effective during position control JOG operation.
5 - 174
When Pr. 1221 = "0 (initial value)" is set
Position
speed
0
Servo ON
ON
(LX)
ON
STF
Sudden stop
Position
command speed
0
Servo ON
(LX)
STF
X87
Sudden stop during positioning operation or home position return operation
Input logic (X87)
Normally open input (NO contact input specification)
Normally closed input (NC contact input specification)
Input logic of sudden stop signal signal
When Pr. 1221 = "1" is set
Position
command
speed
0
Time
Pr. 464
Servo ON
(LX)
STF
ON
ON
ON
ON
Time
Pr. 464
ON
Parameters
Time
I002543E
I002544E