Mitsubishi Electric Q172CPU Programming Manual page 198

8 OUTPUT MODULE
(3) Permissible droop pulse value
(a) This device is used to set the permissible droop pulse value of deviation
counter.
(b) The deviation counter value is continually checked, and if it becomes larger
than the permissible droop pulse value, the error detection signal
(M2407+20n) turns on.
However, since the ball screw axis operation continues, execute the error
processing by user side.
(c) When the motor connected has feedback pulses of 131072 [PLS], set the
value which is found by dividing the actual permissible droop pulse value by
100.
(4) Upper/lower stroke limit value
(a) This device is used to set the stroke range in the virtual mode.
(b) When it exceeds the stroke range during operation, the error detection signal
(M2407+20n) turns on.
However, a stop processing of ball screw axis is not executed.
(5) Speed limit value (V
(a) This device is used to set the maximum speed of ball screw axis.
(b) Set the speed limit value within the following range.
1) Unit : [mm]
V
1
2) Unit : [inch]
V
1
(c) When the ball screw axis speed exceeds the speed limit value, the error
detection signal (M2407+20n) turns on.
However, the ball screw axis speed is not clamped.
V
)
L
4
10 N
L P
10000000
60 P
5
10 N
L P
10000000
60 P
Even if the speed limit value is exceeded,
it controls with the setting speed.
8 - 11
[PLS/s]
[PLS/s]
Speed limit value
t