Serial Communication Connections - ABB REU 610 Technical Reference Manual

REU 610
5.2.2.
110
Voltage Relay
Technical Reference Manual
Table 5.2.1.-5 Digital inputs
Terminal Function
X4.1-23 DI1
X4.1-24
X4.1-21 DI2
X4.1-22
a)
X3.1-1 DI3
X3.1-2
a)
X3.1-3 DI4
X3.1-4
a)
X3.1-5 DI5
X3.1-6
a)
Optional.

Serial communication connections

The optical front connection of the relay is used to connect the relay to the SPA bus
via the front communication cable, refer to Section 6. Ordering information. If a PC
compatible to the IrDA® Standard specifications is used, wireless communication is
possible as well. The maximum wireless operating distance depends on the
transceiver of the PC.
Rear communication of the relay is optional and the physical connection varies with
the communication option.
Plastic fibre-optic connection
If the relay is provided with the optional fibre-optic communication module for
plastic fibre, the fibre-optic cables are connected to terminals as follows:
Table 5.2.2.-1 Plastic fibre-optic rear connection
Terminal Function
X5.3-TX Transmitter
X5.3-RX Receiver
RS-485 connection
If the relay is provided with the optional RS-485 communication module, the cable
is connected to terminals X5.5/1-2 and X5.5/4-6. The connection socket is a 6-pin
header-type socket and the terminals are of screw compression type.
The RS-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,
multi-point communication.
1MRS755769