EUCHNER EKS FSA with Profibus-DP Interface - Manual (Page 17)

Manual EKS Electronic-Key Adapter Profibus-DP
6 Electrical connection
Electrical connection may only be performed by authorized personnel trained in EMC and with the
device and wiring isolated.
For use and operation as per the requirements, a power supply for use in class 2 circuits must
be used.
The Electronic-Key adapter is only allowed to be connected if it is electrically isolated.
Otherwise the Electronic-Key adapter may be damaged.
If connected incorrectly, the Electronic-Key adapter may be damaged.
Observe electrical characteristics and the pin assignment (see section
4.2 Technical data, Electronic-
Key adapter).
All the electrical connections must either be isolated from the mains supply by a safety transformer
according to IEC/EN 61558-2-6 with limited output voltage in the event of a fault, or by other equivalent
isolation measures.
When installing connections, the operating organization must ensure compliance with the EMC safety
requirements in accordance with EN 55011 and EN 61000-6-2.
The electrical connection must be made according to EN 50170 or the technical guidelines in the User
and Installation Guide Profibus-DP from the Profibus User Organization.
The equipotential bonding system of the machine installation must comply with EN 60204-1, section 8,
Equipotential bonding.
Do not lay connection cables in the immediate vicinity of sources of interference.
6.1 Connection of Profibus-DP
(For information on pin assignment see section 4.3.1 Socket, Profibus-DP)
Information!
In general spurs are to be avoided!
The ends of the cable must be terminated with a resistor.
Information!
The Electronic-Key adapter does not contain an internal switchable bus termination resistor!
If the Electronic-Key adapter is the last device on the cable, a bus plug with switchable bus termination
resistor must be used.
It is imperative that the following points are observed:
f A cable specified as cable type A according to EN 50170 must be used for the bus connection.
f Only use bus cables with plugs according to EN 50170.
f When assembling cables, it is imperative that the assembly instructions from the plug manufacturer are
observed.
f The bus connection plug must be inserted and the screw thread tightened. Only in this way is it ensured
that the function earth between cable screen and housing of the Electronic-Key adapter is connected.
f
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