Brief Description
Function
The control system supports the machine manufacturer in implementing an emergency stop
function on the basis of the following functions:
• An emergency stop button is installed in a location easily accessible to the machine
• The emergency stop request to the NC is transmitted via the NC/PLC interface on the
• In response to an emergency stop command, the NC decelerates all axes and spindles
• In the case of an emergency stop, all machine functions controlled by the PLC can be
• Unlatching the emergency stop button does not cancel the emergency stop state nor
• After the emergency stop state has been canceled, it is not necessary to reference the
Basic logic functions: Emergency Stop (N2)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
operator on all SINUMERIK machine control panels. The functionality of the emergency
stop button includes the positive opening of electrical switching contacts and a
mechanical self-activating latching/locking.
PLC.
as quickly as possible (with setpoint value 0), i.e., braking at the current limit of the drives.
brought to a safe state that can be set by the machine manufacturer.
does it initiate a restart.
machine axes or synchronize the spindles. The actual positions of the machine axes are
continuously tracked during the emergency stop sequence.
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