7SR210 & 7SR220 Installation Guide
©2011 Siemens Protection Devices Limited
Page 11 of 24
B
C
A
4.2
E8 Case
Figure 4.2-1 E8 Standard Comms (USB Front Port, Rear RS485) (See Note 2)
Figure 4.2-2 E8 St Additional Comms (IRIG B, 2 x F.O. (ST Connectors))
Notes
1) Recommended terminations are pre-insulated & must be crimped using approved tooling.
2) RS485 (block ”B” terms 14, 16, 18, 20) connections to this communication facility is by screened, twisted pair
cable. On site when wiring other facilities ensure that these terminals are not obscured by other wiring runs. Cable
should be RS485 compliant.
