Siemens SIPROTEC 7SD610 Manual page 303

Checking a Connection using Direct Link
For two devices linked with fibre optical cables (as in Figure 3–18 or 3–19), this connection is checked as fol-
lows.
• Both devices at the link ends have to be switched on.
• Check in the operating indications or in the spontaneous indications:
– If the indication „PI1 with" (protection data interface 1 connected with no. 3243) is provided with the
device index of the other device, a link has been established and one device has detected the other.
– The device also indicates the device index of the device which communicates correctly (e.g. annunciation
„Rel2 Login", No. 3492, when relay 2 has been contacted).
• In case of an incorrect communication link, you see the message „PI1 Data fault" (No 3229). In this
case, recheck the fibre optical cable link.
– Have the devices been linked correctly and no cables been mixed up?
– Are the cables free from mechanical damage, intact and the connectors locked?
– Otherwise repeat check.
Continue with the margin heading „Consistency of Topology and Parameterization".
Checking a Link with a Communication Converter
If a communication converter is used, please note the instructions enclosed with the device. The communica-
tion converter has a test setting where its outputs are looped back to the inputs.
Links via the communication converter are tested by means of local loop-back (Figure 3-20, left).
Figure 3-20 Protection data communication via communication converter and communication network — schematic
example
DANGER!
Opening the Communication Converter
There is danger to life by energized parts!
Before opening the communication converter, it is absolutely necessary to isolate it from the auxiliary supply
voltage at all poles!
SIPROTEC, 7SD610, Manual
C53000-G1176-C145-6, Release date 02.2011
Mounting and Commissioning
3.3 Commissioning
303