Mitsubishi Electric 800 Series Instruction Manual page 220

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.
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. 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.
Position command
speed
0
Servo ON
(LX)
STF
X87
• The input logic of the X87 signal can be set using Pr.1292 Position control terminal input selection.
Pr.1292 setting
0 (initial value) Normally open input (NO contact input specification)
1 Normally closed input (NC contact 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 to stop.
• The X87 signal is effective during position control JOG operation.
Time
Pr.464
ON
ON
Time
Pr.464
ON
ON
ON
Input logic (X87)
Position control under vector control
When Pr.1221="1" is set
Position command
speed
0
Servo ON
(LX)
STF
ON
Time
ON
219
PARAMETERS
5