Bus Cable - Drehmo c-matic Operating Manual

The circuit board is equipped with different connection terminals. The small connection terminal
can be used for a wire cross section of up to 0,5mm², the large connection terminal for up to
2,5mm².
Table 1: Process structure
Connection terminal small –
bus connection , optional inputs
Connection terminal large –
external 24V input
The bus circuit board DiM-10 is equipped with RS485 transceivers. For that reason the internal
length of the stub cable does not affect the signal quality of the bus segment.
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 Bus cable

Only cables according to IEC 61158 and 61784 standards, cable type A, may be used for Profibus
DP wiring.
A maximum of 32 devices can be connected to a segment. If more devices should be connected
to the Profibus connect the segments using repeaters. Respect a distance of minimum 20 cm
between the bus cable and other cables. If possible, bus cables should be laid in a separate,
conductive, and earthed cable tray.
Make sure to avoid potential differences between the individual devices on the bus (perform a
potential equalisation).
For Profibus wiring the directives for segment length and maximum spur/stub length have to be
observed.
Bitrate [kbit/s] Bit time
9,6 104 µs
19,2 52 µs
45,45 22 µs
93,75 10.6 µs
187,5 5.3 µs
500 2 µs
1500 666 ns
3000 333 ns
6000 166 ns
12000 83 ns
Connection data:
Strip length:
Wire insertion angle relative to PCB:
Connection technology:
Cross section (solid-conductor):
Cross section (multi-conductor):
Cross section (multi-conductor):
DREHMO - MaticC Profibus DPV0/DPV1
Complementary operating manual
AWG 20 - 28
AWG 12 - 20
Max. segment length [m]
1200
1200
1200
1200
1000
400
200
100
100
100
5 to 6 mm
40°
CAGE CLAMP
(WAGO series 218)
0.08 to 0.5 mm²; AWG 28 to 20
0.08 to 0.5 mm²; AWG 28 to 20
up to 0.25 mm², AWG 28 to 23
(ferrule without plastic shroud allowed)
0.08 – 0.5 mm²
0.5 – 2.5mm²
Max. stub length [m]
500
500
100
100
33
20
6,6
-
-
-
®
PCB terminal with slider
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