Mitsubishi Electric M80V Series Manual page 283

M800V/M80V Series PLC Interface Manual
4 Explanation of Interface Signals
4.1 PLC Input Signals (Bit Type: X***)
Cont. Signal name
Spindle speed fluctuation detection:
A
Spindle speed out of setting range
[Function]
This signal indicates that the spindle speed fluctuation detection function has detected a fluctuation in the actual spindle
speed.
[Operation]
This signal is turned ON when the actual spindle speed exceeds the tolerance for the spindle speed command set with the
Spindle speed fluctuation detection command (G162) or the parameter.
[Program example]
N1 G97 G98
N2 S___
N3 M3
N4 G162 S___
・・・
Commanded speed
Spindle forward run start
(SRN: Y1898)
In spindle speed fluctuation
detection
Spindle speed fluctuation
detection: Spindle speed
out of setting range
(SSRD: X18B7)
Spindle speed
This signal is turned OFF when:
 The detection is canceled with the Spindle speed fluctuation detection cancel command (G163).
 The actual spindle speed returns back within the tolerance range.
 There is a change in the spindle command speed (including the spindle override and speed change for each function).
 There is a change in the spindle state (forward run, reverse run or stop).
 The reset is input.
 The emergency stop occurs.
 The spindle is in the C axis mode of spindle synchronous tapping, spindle orientation or spindle position control.
IB-1501616-D
Abbrev. 1stSP
SSRD X18B7
N2N3N4
0
Invalid Waiting for start
Allowable spindle speed fluctuation range
(#43072 or #43073)
Commanded
speed
Actual speed
Delay time for starting spindle speed fluctuation detection
(#43071)
2ndSP 3rdSP 4thSP 5thSP
X1917 X1977 X19D7 X1A37
Commanded speed
Reaches
Elapse of
up-to-speed
range
delay time
S command (N2)
In fluctuation detection
Speed reach range (#3105)
270
6thSP 7thSP 8thSP
X1A97 X1AF7 X1B57
Actual speed
Time