Self-Supervision - ABB RET 541 Product Manual

Transformer
terminal
configuration
8
Transformer Terminal
IEC_103 protocols. RS-485 interface module
RER 133 is used to connect the transformer
terminal to the RS-485 communication bus
for DNP 3.0 and Modbus.
LON/SPA bus communication on the rear
connector X3.3
The 9-pin D-type subminiature female con-
nector (RS-485 connection) on the rear panel
connects the transformer terminal to the sub-
station automation system via the SPA bus or
the LON bus. The fibre-optic interface module
type RER 103 is used to connect the trans-
former terminal to the fibre-optic communi-
cation bus. The RER 103 module supports
both SPA bus and LON bus communication.
The SPA-ZC 302 is an interface module that
provides connectivity to the Profibus DP
fieldbus and SPA-ZC 400 interface module
provides connectivity to the IEC 61850-8-1
Station bus.
The Relay Configuration Tool, based on the
IEC 61131-3 standard and included in the
CAP 505 Relay Product Engineering Tools, is
used for configuring the basic terminal, pro-
tection and logic function blocks, control and
measurement functions, timers and other
functional elements included in the logic
functions category.
The programmable system of RET 54_ trans-
former terminals allows the output contacts to
be operated in accordance with the state of
the logic inputs and the outputs of the protec-
tion, control, measurement and condition
monitoring functions. The PLC functions
(e.g. interlocking and alarm logic) are pro-
grammed with Boolean functions, timers,
counters, comparators and flip-flops. The
program is written in a graphic function block
diagram language by using the configuration
software.
Mimic configuration with Relay Mimic Edi-
tor
The Relay Mimic Editor, which is included in
the CAP 505 Relay Product Engineering
Tools, is used for configuring the graphic dis-
play and the alarm channels of the trans-
former terminal. The mimic configuration
may include circuit breakers, disconnectors,
indicators, measurement data objects and
user-defined texts and explanations. Any con-
figuration can be saved for later use.
RET 541, RET 543, RET 545

Self-supervision

The transformer terminal RET 54_ is pro-
vided with an extensive self-supervision sys-
tem. The self-supervision system handles
run-time fault situations and informs the user
of faults via the HMI and LON/SPA bus com-
munication.
When a fault has been detected, the green
Ready indicator starts flashing, a fault indica-
tion text is displayed on the HMI and an
event 0/E57 is generated. The fault indication
text on the HMI consists of two rows: a gen-
eral message 'internal fault', followed by the
generated IRF code of the fault.
The relay will try to recover from a fault
either by restarting the module (I/O module
or HMI) that reported the fault, or by restart-
ing the whole relay. During restarting the IRF
state will remain active until the internal self-
supervision program has determined that the
relay is operating normally. If the fault is still
persistent after restarting three times, the
relay will be in permanent IRF state.
All of the eight alarm function blocks can be
configured in the same alarm view of the
mimic editor. ON and OFF state texts (only
one language version at a time can be sup-
ported for the alarm) and LED colours can be
defined. Three different colours can be used
to define the ON and OFF state. Three basic
modes are available:
• non-latched
• latched-steady
• latched flashing
Interlocking LED texts can also be defined in
the same alarm view but the colour of the
interlocking LED cannot be changed.
LON network configuration
The LON Network Tool is used for binding
network variables between the transformer
terminal units. Typically, LON horizontal
communication is used for transferring object
status data (open, close, undefined) between
units for interlocking purposes. Additionally,
LON horizontal communication is used to
transfer measured current amplitude and
phase angle information between terminals,
when parallel control with MCC principle is
to be applied.
DNP 3.0 and Modbus configuration
The Protocol Mapping Tool is used for con-
figuring the DNP 3.0 and Modbus interfaces
of the transformer terminal.
1MRS755543