2018-07
22
LB Remote I/O System
Installation
3Installation
3.1 Surrounding Enclosure
3.2 Mounting the Backplane
Mounting the Backplane
1. Mount the backplane horizontally, if possible, on a NS 35/15 DIN mounting rail.
2. If you install the backplane vertically, arrange the power supplies at the top to achieve a
favorable heat distribution. Make sure that the maximum ambient temperature for the
components used is not exceeded in this case.
3.3 Connections
At 24 V DC (SELV/PELV) 4 A T fuses are required.
Note!
Requirements for Equipment Protection Level Gc
The LB remote I/O system must only be installed and operated if installed in a surrounding
enclosure
that complies with the requirements for surrounding enclosures in accordance with
IEC/EN 60079-0 and that
is designed with IP54 protection in accordance with IEC/EN 60529.
Note!
Requirements for Non-Hazardous Areas
The LB remote I/O system must only be installed and operated if installed in a surrounding
enclosure
that complies with the requirements for surrounding enclosures in accordance with
IEC/EN 60079-0 and that
is designed with IP54 protection in accordance with IEC/EN 60529.
Alternatively, installation and operation of the system is permitted in a controlled environment
where pollution degree 2 in accordance with IEC/EN 60664-1 is ensured.
Warning!
Danger to life from electric shock.
Absent or insufficient insulation can result in electric shock.
Prevent access to the terminals. Use the switch protection cover as described in the
Accessories chapter.
Caution!
Damage to Equipment
Equipment can be damaged by voltages that are too high, e.g., in temporary faulty operation.
Ensure that the supply voltage of the power supplies used in Zone 2 does not exceed 32 VDC
(SELV/PELV).
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