30
UMG 96RM
Cable type
The cable used must be suitable for an ambient
temperature of at least 80 °C.
Recommended cable types:
Unitronic Li2YCY(TP) 2x2x0.22 (Lapp cable)
Unitronic BUS L2/FIP 1x2x0.64 (Lapp cable)
Maximum cable length
1200 m with a baud rate of 38.4 k.
Fig. Shielding design for cabinet entry.
Cable
Strain relief
Mesh wire shielding of the cable
Earthing clamp
Low-noise earth
Shielding
A twisted and shielded cable must be provided for
connections via the RS485 interface.
• Ground the shields of all cables that run into
the cabinet at the cabinet entry.
• Connect the shield so it has a large contact area and
conductively with a low-noise earth.
• Mechanically trap the cable above the earthing clamp
in order to avoid damage from cable movement.
• Use the appropriate cable inlets, e.g. PG screw joints,
to insert the cable into the switch cabinet.
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