Lenze EMF2113IB - Manual (Page 52)

4 Electrical installation
Wiring
EDKMF2113 DE/EN/FR 5.1
52
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H1_E_INST−Merker_subdbuchsleiste
Wiring
Wiring to a host
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Note!
Additional electrical isolation is required, if
ƒ an 820X or 821X controller is connected to an INTERBUS master and
ƒ a safe electrical isolation (reinforced insulation to EN 61800−5−1) is
necessary.
Use e.g. a bus terminal or an interface module for the INTERBUS master with
an additional electrical isolation (see the corresponding information of the
manufacturer).
The incoming bus (IN) is isolated from the supply voltage and the outgoing bus
(OUT).
The supply voltage has the same potential as the outgoing data bus (OUT).
ƒ The bus system must be designed as a ring.
ƒ Go− and return lines are both contained in the same bus cable.
ƒ The ring connects the INTERBUS master with all devices connected to the bus.