Shield Connection; Bus Termination; Lightning Protection (Option) - Drehmo i-matic Operating Manual

Connection data:
Strip length:
Wire insertion angle relative to PCB:
Connection technology:
Cross section (solid-conductor):
Cross section (multi-conductor):
Cross section (multi-conductor):
Pay attention to the ESD protection of the bus circuit board. Especially good personal
earthing is required.
If the bus circuit board is disassembled from its housing transport and storage must
meet ESD requirements.

3.3 Shield connection

The strain-reliefs in front of the terminal connections for the fieldbus can be used to connect the
cable shields to ground instead of the preferred usage of EMC cable glands.

3.4 Bus termination

RS485 networks have to be terminated at the beginning and the end of a segment, to avoid
reflections on the line and for a conditioning of the signals. The termination is automatically
controlled by the loop redundant interface itself depending on the communication state. Therefore
a separate switch for controlling the terminators is obsolete.

3.5 Lightning protection (option)

The connection board can be equipped with dedicated components for lightning protection as an
option.
DREHMO – i-matic Modbus loop redundant board
Complementary operating manual
9 mm
45°
Phoenix Contact PTSA 1,5/ 2-3,5-Z
0.5 to 1.5 mm²
0.5 to 1.5 mm²
0.5 to 1 mm² (ferrule without plastic shroud)
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