Installation
SUPREMATouch
179
US
Connection advice:
Fig. 113 LWL converter connection scheme
The terminator at rack 1 must be de-activated, and a 120 ohms resistor has additionally to be
clamped under the terminal (2 to 4) NET 0 of the CAN connection.
For Net 1 a 120 ohms resistor has additionally to be clamped under the terminal (2 to 4) NET 1 of
the CAN connection. The terminators of both LWL converters must be activated (S5) as well as
the satellite terminator.
SUPREMA CAN LWL Converter
The voltage supply (24 V) of the CAN LWL converter is effected via a COMBICON connector,
which is also equipped with a relay contact for failure output. The CAN bus is equally connected
via a 4-pin COMBICON connector. The LW line is connected via an ST connector. The baudrate
of the converter can be set by means of DIP switches. Additionally, there is an extra switch for the
CAN terminator in the converter.
The LWL converters dispose of a very good diagnosis function which enables them to locate er-
rors very quickly. A bar graph displays the signal quality at the optical fibre side, and a LED indi-
cates possible errors at the „copper“ side.
To guarantee the function of the SUPREMA LWL converters, some points must be taken into con-
sideration in the rup-up. These are:
Fig. 114 LWL converter connector allocation
a) The CAN baudrate must match with that of the SUPREMA (or CAN bridge).
b) The line length must align with the baudrate (max. 2000 m).
c) Take notice of optical fibre line crossing between TD and RD.
Base station
Rack 1
Satellite
Rack 2
Jack
LWL cable
Plug
CAN Line
NET 1NET 0
CAN Bridge
CBM
LWL Converter
LWL Converter
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