I.11.2
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 (available from february 1999)
“Stop and Emergency Stop functions with SERVOSTAR™ 600”
Category 0:
The controller is switched to “disable”, the electrical supply (400VAC) is
disconnected. The motor leads are disconnected by a changeover switch (contactor,
e.g. Siemens 3RT1516-1BB40) and short-circuited by resistors connected in a star
configuration. The drive must be held by an electromagnetical holding device (brake).
Category 1:
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 with a safety relay with delayed drop-out
(e.g. Siemens 3TK28- series, Pilz PNOZ- series).
In the normal situation, only the supply power is switched off in a safe manner.
The 24V auxiliary supply remains switched on.
20
SERVOSTAR™ 600 Installation-manual
General
02.99
Kollmorgen