Siemens 7sg15 microtapp - Page 63

7SG15 MicroTAPP Communications Interface
50/125 µm glass
DESTINATION
SOURCE
Argus
(p)
Argus Modular I Modular II Sigma 1 Sigma 3
(p)
Sigma 3
(ST)
Sigma 4
(p)
Sigma
4
Argus (p)
00 0 00 0 0 00
Argus
0 420 0 420 420 0 920 920 920
Modular I
00 0 00 0 0 00
Modular II
0 420 0 420 420 0 920 920 920
Sigma 1
0 420 0 420 420 0 920 920 920
Sigma 3 (p)
00 0 00 0 0 00
Sigma 3
(ST)
20 20 20 20 20 20 20 20 20
Sigma 4 (p)
00 0 00 0 0 00
Sigma 4
(ST)
20 20 20 20 20 20 20 20 20
Example:
A ring of relays with a Sigma 4p is required to communicate with a PC. The ring consists of an Argus relay and a
MicroTAPP. From the Transmitter of the Sigma 4p to the Receiver of the Argus, using 1mm polymer fibre, the
maximum distance is 38m. From the Transmitter of the Argus to the Receiver of the MicroTAPP (Modular II) using
1mm polymer fibre, the maximum distance is 70m. From the Transmitter of the MicroTAPP to the Receiver of the
Sigma 4p, the maximum distance is only 7m with 1mm polymer fibre. However, using 200PCS, the maximum
distance is extended to 2.3km! (There is a minimum distance associated with this configuration, however, of
around 1.5km).
©2011 Siemens Protection Devices Limited Chapter 4 Page 7 of 8