janitza UMG 605 PRO, User Manual And Technical Data

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UMG 605-PRO
www.janitza.de
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7. 3. 1 Termination resistors
The cable is terminated with resistors (120 Ohm
1/4 W) at the beginning and at the end of a segment.
The UMG605-PRO does not contain any
termination resistors.
Correct
Incorrect
Terminal strip in the cabinet.
Device with RS485 interface.
(without termination resistor)
Device with RS485 interface.
(with termination resistor on the device)
7. 3. 2 Cable type
CAT cables are not suitable for bus wiring.
Instead, we recommend the following cable
types:
• Unitronic Li2YCY(TP) 2x2x0.22 (from Lapp
Kabel)
• Unitronic BUS L2/FIP 1x2x0.64 (from Lapp
Kabel)
The maximum cable length is 1200 m at a
baud rate of 38.4 k.
m
WARNING!
Risk of injury due
to electric voltage!
Temperatures of up to 80 °C can occur
on the connections if there are high
measured currents.
Therefore, use lines that are designed for
an operating temperature of at least 80 °C