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

Page: 376 / 1218

Position control under vector control and PM sensorless vector control Parameters
5 - 174
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".
●
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.
●
The input logic of the X87 signal can be set using Pr. 1292 "Position control terminal input
selection".
I002543E
Fig. 5-64: Sudden stop
I002544E
Fig. 5-65: Sudden stop during positioning operation or home position return operation
Pr. 1292 setting Input logic (X87)
0 (initial value) Normally open input (NO contact input specification)
1 Normally closed input (NC contact input specification)
Tab. 5-61: Input logic of sudden stop signal signal
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.
0
STF
(LX)
0
STF
(LX)
Position
command
speed
Servo ON
ON
ON
When Pr. 1221 = "0 (initial value)" is set
Pr. 464
Time
Position
command
speed
Servo ON
Time
ON
ON
When Pr. 1221 = "1" is set
0
STF
(LX)
X87
Position
command speed
Servo ON
Time
Pr. 464
ON
ON
ON