Safety engineering
Important notes
10
l
261
EDS84ASC552 EN 8.1
10.2 Important notes
Application as directed
The controllers of the 8400 series that are equipped with drive−based safety must not be
modified by the user. This concerns the unauthorised exchange or removal of the
drive−based safety.
} Danger!
Danger to life through improper installation
Improper installation of the safety engineering systems can cause
anuncontrolled starting action of the drives.
Possible consequences:
ƒ Death or severe injuries
Protective measures:
ƒ Safety engineering systems may only be installed and commissioned by
qualified and skilled personnel.
ƒ All control components (switches, relays, PLC, ...) and the control Cabinet
must comply with the requirements of EN ISO 13849−1 and EN ISO 138492.
This includes:
– Switches, relays in IP54 enclosure.
– Control cabinet in IP54 enclosure.
– Please refer to EN ISO 13849−1 and EN ISO 138492 for all further
requirements.
ƒ It is essential to use insulated wire end ferrules for wiring.
ƒ All safety relevant cables outside the control cabinet must be protected, e.g.
by means of a cable duct:
– Ensure that there are no short circuits.
– For further measures see EN ISO 138492.
ƒ If an external force acts upon the drive axes, additional brakes are
required.Please observe that hanging loads are subject to the force of
gravity!
} Danger!
When the "safe torque off" (STO) function is used, an "emergency
switching−off" according to EN 60204 is not possible without additional
measures. There is no electrical isolation, no service switch or repair switch
between motor and controller!
Emergency switching−off" requires an electrical isolation, e.g. by a central
mains contactor!
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