6 Installation and replacement
71
u-remote IP20 modules for functional safety manual
1484600000/04/06.2017
WARNING
Explosion risk!
▶
Before assembly or replacement, make
sure that there is not a potentially explo-
sive atmosphere!
▶
For applications in potentially explosive
atmospheres, observe the installation and
construction requirements of EN 60079-
15 and/or country-specific regulations.
WARNING
Dangerous contact voltage!
▶
All work on the u-remote station must be
carried out with the power supply discon-
nected.
▶
Make sure that the place of installation
(switch cabinet etc.) has been
disconnected from the power supply!
ATTENTION
The product can be destroyed by elec-
trostatic discharge!
The components in the u-remote series can
be destroyed by electrostatic discharge.
▶
Please make sure that personnel and work
equipment are sufficiently earthed!
▶
Carry out all work during the installation and removal as
well as replacement of components as described in the
u-remote manual.
When using modules for functional safety (safe I/O modules
or safe power-feed modules), please observe the following
additional notes:
–
The modules may only be installed in lockable switch
cabinets which meet protection class IP54.
–
Please use wire-end ferrules in combination with flexible/
multi-conductor cables.
–
Ensure that external short circuits due to the cabling can-
not occur for safety inputs in the configuration without
test pulses (see DIN EN ISO 13849-2 Table D.4).
Once an electronic unit is removed from a safe
power-feed module, the inputs and outputs of the
subsequent modules are no longer supplied with
power. This is equivalent to triggering the con-
nected safety equipment!
6 Installation and replacement
Summary of Contents for UR20-4DI-4DO-PN-FSOE
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