Siemens 7UT51

17
Installation and Servicing
7UT51 v3
194 PRIM-2330C
17.11 Changing the Normal Signal Position of the Fiberoptic
Data Port
If the relay was ordered with a fiberoptic rear data port,
the normal signal position is factory preset to be “
Light
Off
.” This can be changed by repositioning
plug-jumper X239, which is located in the rear area of
the power supply board (the center board of the main
module). The procedure is as follows:
1. Remove the main module from the relay case as
described in section XREF.
2. Change the jumper location to the appropriate
position, as shown in Figure 17.20.
3. Return the module to the relay case, as described
in Section XREF.
Figure 17.20
Jumper Location for Setting Normal
-
Signal Position of Fiberoptic Data Port
Connect pins 1 and 2 for normal signal
position to be “
Light Off
”
Connect pins 2 and 3 for normal signal
position to be “
Light On
”
Do not change the position of any other
jumpers shown in this figure!
Rear area of power supply board
(center board of main module).
Appearance of board if
Appearance of board if
relay has always had a
fiberoptic rear data port.
relay once had a wire
rear data port.