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2 Safety instructions
2.1 General
Follow 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 affect the safety of operators and machinery�
The installation and connection must comply with the applicable national and inter-
national standards� Responsibility lies with the person installing the device�
The system installer is responsible for the safety of the system into which the
UK
device is integrated�
2.2 Target group
The device must only be installed, connected and put into operation
by a qualified electrician.
2.3 Electrical connection
Disconnect the unit externally before handling it� Also disconnect any indepen-
dently supplied relay load circuits�
Make sure that the external voltage is generated and supplied according to the
requirements for safety extra-low voltage (SELV) since this voltage is supplied
without further measures near the operating elements and at the terminals for the
supply of connected sensors�
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 externally supplied or internally generated SELV voltage is externally groun-
ded, the responsibility lies with the user in accordance with the applicable national
installation regulations� All statements in these operating instructions refer to the
unit the SELV voltage of which is not grounded�
It is not allowed to supply external voltage to the terminals for the pulse pick-up
supply� The consumption of current which exceeds the value given in the technical
data is not allowed�
An external main switch must be installed for the unit which can switch off the unit
and all related circuits� This main switch must be clearly assigned to the unit�
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