Conditions for a trouble-free network of several drives
Mains connection
12
Network of several drives
12.4
12.4.2
L
12.4-2
EDS82EV903-1.0-11/2002
12.4.2 Mains connection
Mains fuses and and cable cross-section must be selected according to the
mains current which results from the input power P
DC100%
. Observe national
standards, temperatures and other conditions.
(¶ 12.4-6)
)
))
) Note!
Asymmetries in the network can cause a dimensioning raised by
a factor between 1.35 and 1.5.
Formula for the mains current in networks:
I
mains
[A] ≈
P
DC100%
[W]
1.6 ⋅ U
mains
[V]
Only use those mains chokes and mains filters which are permissible for DC-bus
connection.
(¶ 12.5-2)
Function:
l Mains-current limitation
l Current/power symmetry of the mains input circuits of the controllers with
decentralised supply.
Select mains chokes/mains filters for mains current.
)
))
) Note!
Please observe that network operation requires different mains
chokes/mains filters than stand-alone operations.
Compliance with the EMC regulations must be checked. Also
check the use of a central interference suppressor in the AC
supply.
Ensure simultaneous mains connection of all controllers connected to the
network.
Cable protection and cable
cross-section
Mains current
Mains chokes, mains filters,
EMC
Controller protection
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