Electrical installation
Connection of relay output K
SR
for Safe standstill"
5
EDK82EV113 DE/EN/FR 8.1
107
L
(only active at variant E82EVxxxK4Cx 4 x)−26−
Variant x 4 x of the controller supports the safety function "Safe standstill", protection
against unexpected start, according to the requirements of the EN 954−1 control category
3" and EN 1037.
For this purpose the controllers have an integrated safety relay with feedback contact. The
safety relay switches off the voltage supply of the optocoupler for pulse transfer to the
IGBT. It must be externally controlled with DC +24 V.
l Only skilled personnel is authorized to install and commission the function "Safe
standstill".
l All safety−relevant external cables (e.g. control cable for the safety relay, feedback
contact) must be protected, e. g. in the cable duct. Ensure that short−circuits and
lateral connection cannot occur!
l If external forces act on the drive axes, additional brakes are necessary. Especially
consider the force of gravity acting on suspended loads!
l After the initial commissioning the operator must check the function of the safety
circuits. This must be repeated periodically.
} Danger!
l The electrical reference point for the coil of the safety relay must be
connected with the protective circuit (DIN EN 60204−1 Abs. 9.4.3)!
– Only in this way the protection against faulty operation is guaranteed.
l Without additional measures the function "Safe standstill" does not provide
an "Emergency−off":
– There is neither an electrical isolation between motor and controller nor a
"service switch" or a "repair switch"
– An "Emergency−off" requires an electrical isolation,e.g. by means of a
central mains contactor!
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