Serial Communication Connections - ABB REJ 523 Technical Reference Manual

ABB Substation Automation
Products and Systems
4.2.2
1MRS750940-MUM
Technical Reference Manual
Table 4.2.1-4 Internal Relay Fault contact (IRF)
Terminal
X2.1-13
X2.1-14
X2.1-15
Table 4.2.1-5 Binary input BI
Terminal
X2.1-17
X2.1-18

Serial communication connections

The relay is interfaced with a fibre-optic SPA bus by means of bus connection module
RER 103 via a 9-pole, D-type subminiature connector X2 located on the rear panel of
the device. The terminals of the fibre-optic cables are connected to the counter
terminals Rx (Receiver) and Tx (Transmitter) of the bus connection module. The
fibre-optic cables are linked from one relay to another and to the substation level
communication unit, for instance type SRIO 1000M.
The optical PC-connection on the relay front panel is used to connect the relay to a
fibre-optic SPA bus via an opto-cable 1MKC950001-1.
Table 4.2.2-1 SPA logic/ RS-485 connection for RER 103
Terminal Function
X.2.2-1
X.2.2-2
X.2.2-3
X.2.2-4
X.2.2-5
X.2.2-6
X.2.2-7
X.2.2-8
X.2.2-9
Function
Internal relay fault, common
Closed; IRF, or U disconnected
aux
Closed; no IRF, and U
Function
Input+
Input-
Data A (data signal +)
Data B (data signal -)
RTS A (request to send +)
RTS B (request to send -)
COL A (2.8 V on relay)
COL B (2.2 V on relay)
GND
NC
+5 Vdc, supply voltage (max 200 mA)
connected
aux
REJ 523
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