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2 Safety instructions
2.1 General
These instructions are an integral part of the device� They contain texts
and figures concerning the correct handling of the device and must be
read before installation or use�
Observe the operating instructions� Non-observance of the instructions,
operation which is not in accordance with use as prescribed below,
wrong installation or incorrect handling can seriously affect the safety of
operators and machinery�
2.2 Target group
These instructions are intended for authorised persons according to the
EMC and low-voltage directives� The device must be installed, connected
and put into operation by a qualified electrician�
2.3 Electrical connection
Disconnect the unit externally before handling it� If necessary, also
disconnect any independently supplied output load circuits�
If the device is not supplied by the mobile on-board system (12/24
V battery operation), it must be ensured that the external voltage is
generated and supplied according to the criteria for safety extra-low
voltage (SELV) as this voltage is supplied without further measures to the
connected controller, the sensors and the actuators�
The wiring of all signals in connection with the SELV circuit of the device
must also comply with the SELV criteria (safety extra-low voltage, safe
electrical isolation from other electric circuits)�
If the supplied SELV voltage is externally grounded (SELV becomes
PELV), the responsibility lies with the user and the respective national
