Beckhoff BC8050, Документация

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Mounting and wiring
BC8050 und BC8150 19 Version: 3.0.0
Fig. 8: Power contact on the left
It should be noted that, for reasons of electromagnetic compatibility, the PE contacts are capacitively
coupled to the mounting rail. This can both lead to misleading results and to damaging the terminal during
insulation testing (e.g. breakdown of the insulation from a 230 V power consuming device to the PE
conductor). The PE supply line at the Bus Coupler / Bus Terminal Controller must be disconnected for an
insulation test. In order to uncouple further feed locations for the purposes of testing, the feed terminals can
be pulled at least 10 mm out from the connected group of other terminals. In that case, the PE conductors do
not have to be disconnected.
The power contact with the label PE must not be used for other potentials.
3.2.2 Power supply
DANGER
Risk of injury through electric shock and damage to the device!
Bring the Bus Terminals system into a safe, de-energized state
before starting mounting, disassembly or wiring of the components!
Supply of Bus Terminal Controller and Bus Terminals (Us)
The Bus Terminal Controller requires a supply voltage of 24 V
DC
.
The connection is made by means of the upper spring-loaded terminals labelled 24 V and 0 V . This supply
voltage is used for the electronic components of the Bus Coupler / Bus Terminal Controllers and (via the K-
bus) the electronic components of the Bus Terminals. It is galvanically separated from the field level voltage.