ABB Remote I/O RIO600 Installation And Commissioning Manual page 22

Section 3
RIO600 overview
14
RIO600 helps in simplifying and decreasing the wiring inside the substation by
digitizing the hardwired signals. The fully hardwired traditional medium-voltage
switchgear/substation control and protection system results in extensive I/O wiring,
connecting devices in switchgear signaling to the external systems, for example, to the
remote terminal unit (RTU) or other higher-level automation systems.
RIO600 provides additional I/O within the switchgear using Ethernet communication.
The I/O signals can be efficiently transmitted between the protection relay or
COM600 with fast, high performance IEC 61850 GOOSE communication.
Alternatively, RIO600 can communicate with an upper level automation system using
the widely accepted Modbus TCP automation protocol.
The binary input module can be used for sending binary input values from primary
equipment or secondary systems to peer protection relays or an upper-level system.
The binary output modules can be used to control equipment based on the control
signal received from communication.
The smart control module (SCM) can be used for different switchgear applications to
drive primary switches. The module enables the control of a combined three-position
switch (disconnector and earthing switch) used in gas insulated switchgears or
standard two-position switches such as disconnector or earthing switches.
Alternatively, the heavy-duty output contacts of the SCM can be used as power
outputs for circuit breaker trip circuits to make, carry and break the belonging trip coil
current. The trip circuit supervision function is designed to supervise the control
circuit of the circuit breaker. Furthermore, the SCM can be used as a generic module
with four binary inputs and four fast power outputs.
With the RTD/mA module, RIO600 can be used in different monitoring applications.
RIO600 can receive temperatures (°C) via RTDs or analog input signals (mA) from
various transducers or devices. The input current (mA) can be linearly scaled for
various applications, for example, transformer tap changer position indication. The
input value is forwarded to a peer protection relay or to an upper-level system. With
the analog output module (AOM), RIO600 can control an external device having an
mA input.
RIO600 also includes a measurement module with fault passage indication (FPI)
functionality. This module is intended for grid automation applications where
RIO600 enables accurate current and voltage measurements or only current
measurement from a MV network using ABB's accurate and lightweight sensor
technology. With this measurement module, RIO600 can be used as a stand-alone
fault passage indicator unit. Based on the measured MV values, it can give voltage
presence and directional FPI and report them to an upper-level system. This also
enables power flow and power quality monitoring. The typical accuracy of line
voltages, currents and active power is better than 0.5% and for other power
measurements better than 1%.
The FPI functionality can be based on phase current measurements only. It provides
a selective fault passage indicator for single phase earth faults in high-impedance
earth networks, that is, in compensated, unearthed and high-resistance earthed
systems. It can be applied as single-phase earth-fault FPI in case of overhead lines and
1MRS757488 H
Installation and Commissioning Manual
RIO600