Mitsubishi Electric Q172CPU Programming Manual page 193

8 OUTPUT MODULE
(2) Roller diameter (L)/Number of pulses per roller revolution (N
(a) The roller diameter connected to servomotor and the number of pulses per
roller revolution are displayed.
(b) The roller cycle speed is calculated by the roller diameter and number of
pulses per roller revolution as the formula below.
1) Unit : [mm]
[Roller cycle speed] =
2) Unit : [inch]
[Roller cycle speed] =
The value calculated by calculations 1) and 2) is stored with an integer
value in the roller cycle speed storage register.
Output unit
mm
inch
(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 roller 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.
Number of pulses per roller
revolution (N )
L
Roller diameter (L)
Number of input
pulses per minute
Number of input
pulses per minute
Roller cycle speed storage register
Calculated value
Calculated value
8 - 6
L
[mm/min]
N
L
L
[inch/min] L : [inch]
N
L
100
1000
)
L
L : [mm]