Eia-232 Serial Rear Connection - ABB 615 series Technical Manual

Section 13
Protection relay's physical connections
13.4.3
13.4.4
13.4.5
1144

EIA-232 serial rear connection

The EIA-232 connection follows the TIA/EIA-232 standard and is intended to be used
with a point-to-point connection. The connection supports hardware flow control (RTS,
CTS, DTR, DSR), full-duplex and half-duplex communication.
EIA-485 serial rear connection
The EIA-485 communication module follows the TIA/EIA-485 standard and is intended
to be used in a daisy-chain bus wiring scheme with 2-wire half-duplex or 4-wire full-
duplex, multi-point communication.
The maximum number of devices (nodes) connected to the bus where the
protection relay is used is 32, and the maximum length of the bus is 1200
meters.
Line differential protection communication connection
The dedicated line differential protection communication link uses either a single mode or
a multimode connection with an LC type connector. The line differential communication
connector (X16/LD) is always the topmost in the communication module. Line
differential communication cards COM0008 and COM0036 are provided with multimode
optical LC connector. Line differential communication cards COM0010 and COM0035
are provided with single mode optical LC connector.
The port cannot be used with any other Ethernet communication network. The interface
speed is 100 Mbps.
Use direct link. Switches, hubs or routers are not allowed between the
protection relays.
If galvanic pilot wire is used as protection communication link, the pilot wire modem
RPW600 is required. The protection communication link always requires two modems in
a protection scheme, thus delivered in pairs of master (RPW600M) and follower
(RPW600F) units. A single-mode fiber optic cable with dual LC type connectors is used
to connect RED615 with RPW600 modem. The recommended minimum length for this
cable is 3 m.
Communication port X16/LD of RED615 is used both for direct fiber
optic link and connection with the pilot wire modem.
1MAC059074-MB A
615 series ANSI
Technical Manual