Mounting and wiring
BC8050 und BC815020 Version: 3.0.0
Fig.9: Terminal points for the Bus Terminal Controller supply
Fig.10: UL identification
DANGER
Note the UL requirements for the power supply.
To comply with the UL requirements, the 24V
DC
supply voltage for Us must originate
• from an isolated source protected by a fuse of max. 4A (according to UL248) or
• from a voltage supply complying with NECclass2.
An NECclass2 voltage source must not be connected in series or parallel with another
NECclass2 corresponding voltage source!
DANGER
No unlimited voltage sources!
To comply with the UL requirements, Us must not be connected with unlimited voltage
sources.
Power contacts supply (Up)
The bottom six connections with spring-loaded terminals can be used to feed the supply for the peripherals.
The spring-loaded terminals are joined in pairs to a power contact. The feed for the power contacts has no
connection to the voltage supply for the BC electronics.
The spring-loaded terminals are designed for wires with cross-sections between 0.08mm
2
and 2,5mm
2
.
The assignment in pairs and the electrical connection between feed terminal contacts allows the connection
wires to be looped through to various terminal points. The current load from the power contact must not
exceed 10A for long periods. The current carrying capacity between two spring-loaded terminals is identical
to that of the connecting wires.
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