33
EMERGENCY STOP
The controller must be integrated into an emergency stop circuit in order to implement an
emergency stop function.
An emergency stop of category 1 is required: Controlled stopping while maintaining the
power supply in order to carry out the shutdown. The power supply is not interrupted
until the machine has come to a standstill.
This procedure brings the spindle and drives to a standstill as quickly as possible. Only then can
the power supply be interrupted.
The controller has some precautions to support integration:
• One ESTOP input for the emergency stop circuit
• A SPINDLE-STOP output to stop an inverter if necessary.
• An ESTOP-FOLLOW output that responds with a delay and stops the power supply.
Overview of the function:
The ESTOP input can be connected with max. 12V. The polarity of the input can be determined
in the settings, NC operation is the default, i.e. the emergency stop switch is closed in normal
operation and opens in the event of an emergency stop. If the emergency stop switch opens
or the cable is interrupted, the emergency stop state is activated in the control, running cycles
are aborted immediately, pulse generation is stopped and the drives are stopped. If the spin-
dle of the machine is operated via an inverter, it can be stopped in a controlled manner via the
simultaneously switched SPINDLE STOP OUTPUT, thus slowing down the spindle faster than if
the voltage is simply interrupted!
After an adjustable time (ESTOP-FOLLOW DELAY), the output ESTOP-FOLLOW is switched, so
that the power supply of the machine can be switched off via a coupling relay or contact. This
switch-off does not necessarily have to take place, but can be implemented with this output if
the risk assessment of the machine requires it.
If the operating voltage is not switched off, a release must only be given by pressing the STOP
key after the emergency stop status on the control has been removed.
Cycles running at the time of the emergency stop are then NOT resumed but must be restarted
manually.
The applicable regulations regarding the number and design of the emergency stop devices
must be observed.
DANGER
A non-existent or malfunctioning emergency stop circuit can result in death
or serious injury. Ensure that the entire machine is in a safe state in the
event of an emergency stop before using or handing over the machine.
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