B–64113EN–1/01
2. PREPARATIONS FOR OPERATION
126
If you press Emergency Stop button on the machine operator’s panel, the
machine movement stops in a moment.
EMERGENCY STOP
Red
Fig. 2.1 (a) EMERGENCY STOP
This button is locked when it is pressed. Although it varies with the
machine tool builder, the button can usually be unlocked by twisting it.
[Classification] Input signal
[Function] Activating an emergency stop signal stops the machine instantly.
[Operation] When the emergency stop signal *ESP turns to “0”, the emergency stop
is applied to the machine and the CNC is reset. This signal is controlled
by the B contacts of a pushbutton switch. The emergency stop signal turns
the servo ready signal (SA) to “0”.
Overtravel detection by this CNC is handled by the stored stroke check
function, and a limit switch for normal overtravel detection is not needed.
To prevent the machine from moving beyond the software limit through
servo feedback error, always install a stroke end limit switch (shown in
Fig. 2.1 (b) as follows).
2.1
EMERGENCY STOP
General
Signal
Emergency stop
*ESP<X008#4,G008#4>