Berthold Duo Xpert LB 478 MPLM, Руководство по эксплуатации

Страница: 29 / 136

LB 478 MPLM 5 Electric Installation
56925-8BA2 Rev.00, 07/2019
29
u
the cables are laid out in a strain-relieved and friction-free manner.
u
Only use cables whose diameters are approved for the respective cable gland.
The cables must comply with the requirements and cross-sections specified in
the technical data.
u
The connected cables must be appropriate for temperatures of at least 10°C
above the maximum admissible ambient temperature.
Cable Glands and Blanking Elements
u
The feeding of cables into the wall housing is only permitted via a cable entry.
u
Cable glands must be suitable for the respective application.
u
All cable glands must be assembled according to manufacturer's instructions
and be tightened to the appropriate tightening torque.
u
Cable glands that are not required for installation must be covered with suit-
able blanking elements.
u
Line cross-sections must comply with the respectively used cables.
u
Cable bushings and blanking elements must comply with the applicable IP pro-
tection class and with the requirements for the operational environment.
u
We recommend ordering missing cable glands, blanking elements or adapters
from Berthold.
Protective earth and equipotential bonding
u
The protective earth conductor has to be connected to the terminals marked
with "PE".
u
The housing must be connected to local equipotential bonding.
EIA-485 (RS-485) Network
For integration of EVU units into an EIA-485 (RS-485) network, all participants must
be connected one after the other in the configuration Master-Master. Star connec-
tion is not permitted.
The first and last station (physical, independent of the master's position) on the
network needs a terminating resistor of 121 Ω.