
10. INTERFACE SIGNALS
B–65162E/03
368
D Spindle motor and spindle amplifier module enter the operable state
by
*
ESPA = 1. When *ESPA is set to 0, the spindle amplifier module
outputs the MCOFF signal and the spindle motor does not operate.
D If
*
ESPA = 0 is set during the motor rotation, the spindle motor
smoothly decelerates to a stop. Then, it outputs the MCOFF signal.
D If
*
ESPA = 1 then occurs again, the spindle motor enters the rotateable
state, and so will begin to rotate as soon as a rotation command is
issued. For this reason, the command signal (speed command, normal
operation command, or reverse operation command) to the spindle
amplifier module should be reset at the same time an emergency stop
signal is input.
D The table contents result from the parameter setting.
Parameter setting
Mode
Series15:3001-bit0
Series0:6501-bit0
Series16:4001-bit0
Contents
A 0
Machine ready signal is not used.
At this time, the spindle motor enters the oper-
able state only when emergency stop signal is
input.
B 1
Uses the machine
ready signal to create
operable state by
double signal.
Intercepts power by
turning off the transis-
tor excitation signal
for the inverter with
MRDYA = 0.
Used when minimizing the input signal.
1 During the automatic tool change (ATC) orientation operation, in a
machine where the spindle motor is restrained by the tool unclamp
signal,there are cases where the load meter indication becomes large
and a large motor current flows by a slight slip from the orientation
stop position.
In order to prevent this, set MRDYA = 0 and release the orientation
state during tool unclamp.
If MRDYA = 1 is set at tool unclamp end, it is possible to re-enter the
orientation state.
2 Regarding the purpose of the above described 1, if the orientation
command signal remains at ORCMA = 1, even if the machine ready
signal is set to MRDYA = 0/1, there is no orientation again after 1
rotation as it only moves by the amount of the stop position slip
.
10.2.3
Emergency Stop Signal
(*ESPA)
10.2.4
Machine Ready Signal
(MRDYA)
Mode A
Mode B