Serial Communication Connections - ABB REJ 527 Technical Reference Manual

ABB Substation Automation
Products and Systems
4.2.2.
1MRS750616-MUM
Technical Reference Manual
Table 34: Output contacts
Terminal
X2.1-3
X2.1-4
X2.1-5
X2.1-6
X2.1-7
X2.1-8
X2.1-9
X2.1-10
X2.1-11
X2.1-12
Table 35: Internal Relay Fault contact (IRF)
Terminal
X2.1-13
X2.1-14
X2.1-15
Table 36: 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 the bus connection
module RER 103 via a 9-pole, D-type subminiature connector X2.2 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.
Function
PO1, closing contact
PO2, closing contact
SO1, common
SO1, NC
SO1, NO
SO2, common
SO2, NC
SO2, NO
Function
Internal relay fault, common
Closed; IRF, or U disconnected
aux
Closed; no IRF, and U connected
aux
Function
Input+
Input-
REJ 527
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