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Technical Description
2.14.2
Emergency Stop strategies
The Emergency Stop function is defined in EN 60204 (VDE 0113), Para. 9.2.5.4.
Implementation of the Emergency Stop function :
You can find wiring recommendations in our application note
Category 0:
Category 1:
24
"Stop and Emergency Stop functions"
The controller is switched to "disable", the electrical supply (208...480VAC) is disconnected.
The drive must be held by an electromagnetic holding device (brake).
In multiaxis systems with connected DC bus link bus (intermediate circuit) the motor cable
has to be disconnected by a changeover switch (contactor, e.g. Siemens 3RT1516-1BB40)
and short-circuited by resistors connected in a star configuration.
If hazardous conditions can result from an emergency stop switch-off with an unbraked
run-down, then the drive can be switched off by a controlled shut-down.
Stop Category 1 permits electromotive braking with a switch-off when zero speed has
been reached. Safe shut-down can be achieved, when the loss of the mains supply is not
rated as a fault and the control takes over the disabling of the servoamplifier.
In the normal situation, only the supply power is switched off in a safe manner.
The 24V auxiliary supply remains switched on.
02/06
AX2040/2070 Installation Manual
Beckhoff
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