19
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
© Systeme Lauer GmbH Lauer-driver
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
○○○○○○○
○○
A3.1 Communication cable programming UNIT/KOS
The connection is made with one 3-wire cable (TXD, RXD, GND)
When using shielded standard cable (3 * 0.14, not twisted in pairs) a maximum
length of 15 meters is recommended. A connection interruption is registered in
both the PCS 200 and 850 and noted in the fault word (ABx.6/ABx.7) for further
evaluation.
A3.1.1 Screening of the communication cable
The screen should be connected on both sides to a metal coated connector case.
The screen can also be connected to pin 1 when using non-metal coated connector
cases. However, this is not recommended for error-technical reasons. There, the
data lines should be covered as completely as possible by the screen! With
grounding at both sides is to be noted however that possibly (because of ground
potential shifts) a potential compensation wire is required having at least 10 times
the screen cross section (reason: compensation currents should not flow through
the cable screen if possible!). This applies particularly if PCS and programmable
controller are not connected to the same earthing point. This is for example valid
where the PCS and programmable controller are not housed in one switching
cabinet! For double sided earthing, use a cable earthing bar, type CER 001, AEGS
E-NR. 424 244 739 on the PCS side. Install according to AEG instructions!
Communication
A3. Communication
A
To Next Page
Loading...
Need help?
General