
B–65162E/03
10. INTERFACE SIGNALS
381
0VR1
0VR2
0V
JY1
Reference
voltage
Analog input
0V
Reference voltage
output: 4.75 "0.25 V
Variable
resistor VR
Resistor R1
Shielded
wire
(Machine operator’s panel)
(Spindle amplifier module)
1
2
20
Fig.10.2.16 (b) Connection between a Spindle Amplifier and
Machine Operator’s Panel
D When the signal for enabling/disabling this override function is set, or
the parameter for an override limit is changed, the speed of the motor
may change substantially. Stop the motor first, and then set the signal
or change the parameter.
D This signal is used to cut the power of the motor when a failure occurs
while the spindle synchronization control or the gear cutting machine
is operating. When the power is cut, the motor runs free.
D This signal only cuts the power of the motor.
D The power can be restored to the motor again after the motor stops
(zero speed signal, SSTA = 1).
If the signal is canceled, the power cannot be restored to the motor
while the motor is operating (SSTA = 0).
D After the power of the motor is cut, all the operation modes(
*
1) must
be canceled for safety.
After the motor stops (SSTA = 1), set the operation modes again.
When the power is cut during position control, an alarm such as
excessive deviation may occur because position control remains
effective.
(
*
1) Example of operation modes:
- Forward rotation command (SFRA)
- Reverse rotation command (SRVA)
- Spindle orientation (ORCMA)
- Rigid tapping (RGPT, RGTAP)
- Spindle synchronization control (SPSYC, SPPHS)
- Cs-axis control
- Cs contouring control (COFF, CON, SCNTR1, SCNTR2, etc.)
- Differential mode (DEFMDA)
10.2.17
Motor Power Off Signal
(MPOFA)