
B–65162E/03
10. INTERFACE SIGNALS
371
”1” SSTA
ATC
(Tool replacement)
Speed zero
signal
SFR / SRV
(Normal/reverse rotation command)
Command
Spindle
amplifier
signal
Machine
Motor rota-
tion speed
(Stop)
Stopper
(Storage)
Rotates slowly in torque
restriction state
Speed detection
signal
Speed command at orientation
Torque limiting command TLMLA, TLMHA
Torque limiting signal TLMA
OFF
”0”
ON within regular speed
(Stop)
(Storage)
Projection
Limit switch
(Stop confirmation signal)
Example of machine type orientation sequence
When the conditions desicribed on the privious page are difficult, use the
purely electric type spindle orientation (option) which does not use a
stopper.
D After removing the various alarm causes such as motor overheating,
excess speed deviation, short-circuiting, excess speed, excess voltage,
excess current, excess load, and voltage drop, if the alarm reset signal
is input, the alarm is released and the usable state occurs.
D Even if this signal isinputted when there is no alarm, it is disabled.
D The alarm detected by power supply module is not released.
(Such alarms reset by turning off the power.)
D If the state occurs in which the spindle motor operation cannot be
continuously executed, the power to the spindle motor will become
OFF and the spindle motor will be stopped.
D At the same time the alarm signal ALMA = 1 occurs. Regarding the
alarm contents, confirm by the display section of the spindle amplifier.
D Set the command signal to the spindle amplifier (speed command,
forward/reverse rotation command, torgue limit command, spindle
orientation command ) in the reset state using the alarm signal output.
If it is not in the reset state (state that signal from PMC is all clear),
when the alarm on the spindle amplifier is released there is a danger
that the spindle motor may rotate.
10.2.8
Alarm Reset Signal
(ARSTA)
10.2.9
Spindle Alarm Signal
(ALMA)