Fuxx Control - ARS 2320 / ARS 2340 Instruction Manual - Kuhnke

Fuxx Control ARS 2320 / ARS 2340 KUHNKE Automation
8.7.4 Cable type and configuration [X1]
The cable names given refer to cables made by Lapp. They have proven to be reliable and are
successfully used in many applications. However, it is also possible to use comparable cables from
other manufacturers, e.g. Lütze or Helukabel.
� LAPP KABEL UNITRONIC-LiYCY; 25 x 0.25 mm²
Figure 24 shows the cable between the ARS 2300 servo positioning controller and the control system.
The cable shown has two cable shields.
The outer cable shield is connected to PE on both sides. Inside the ARS 2300 servo positioning
controller, the connector housing of the D-Sub connector is connected to PE. If metal D-Sub
connector housings are used, the cable shield is simply squeezed underneath the strain relief.
Often an unshielded cable is sufficient for 24V signals. In environments with high interferences or in
the case of long cables (l > 2m) between the control system and the ARS 2300 servo positioning
controller, Kuhnke recommends using shielded control cables.
Although the analog inputs of the ARS 2300 servo positioning controller are differential, using
unshielded cables for the analog signals is not recommended as interferences, e.g. caused by
switching contacts, or output stage interferences of the converters can reach high amplitudes. They
couple themselves into the analog signals and cause common-mode interferences which may lead to
deviations of the analog measured values.
In the case of limited cable lengths (l < 2m, wiring inside the control cabinet), the outer dual-sided PE
shield is enough to guarantee trouble-free operation.
For optimal interference suppression of the analog signals, the cores for the analog signals have to be
shielded together and separated from other cores. At the ARS 2300 servo positioning controller, the
inner cable shield is connected on one side to AGND (pin 1 or 14). It can be connected on both sides
in order to establish a connection between the reference potentials of the control system and the ARS
2300 servo positioning controller. Pins 1 and 14 are directly connected to each other inside the
controller.
8.7.5 Connection notes [X1]
The digital inputs are rated for control voltages of 24V. The high signal level already ensures a high
level of interference immunity of these inputs. The ARS 2300 servo positioning controller provides an
auxiliary voltage of 24V which may be loaded with 100 mA maximum. As a result, the inputs can be
activated directly via switches. Activation via the 24V outputs of a PLC is of course also possible.
The digital outputs are so-called "high-side switches". This means that the 24V of the ARS 2300 servo
positioning controller are actively switched through to the output. Loads such as lamps, relays, etc. are
thus switched from the output to GND24. The four outputs DOUT0 to DOUT3 can be loaded with a
maximum of 100mA each. The outputs can also be led directly to 24V inputs of a PLC.
94 E 732 GB
14.12.2006