3.Fault Recovery; 4.Fault Codes; Serial Communication; 1.Serial Communication Port Assignment - ABB RET 54 Series Technical Reference Manual, General

RET 54_
5.1.12.3.
5.1.12.4.
5.1.13.
5.1.13.1.
68
Transformer Terminal
Technical Reference Manual, General
Fault recovery
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 restarting 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.
When returning to normal operation, the indication text will be replaced by this text:
'internal fault *CLEARED*', and the green READY indicator will return to steady
state. In addition, an event 0/E56 is generated over the serial communication.
Fault codes
When an internal fault appears in RET 54_, the self-supervision system generates an
IRF code that indicates the type of the fault. The fault code can be read from the
transformer terminal main menu Status/General/IRF code. The fault code
is also delivered as event data with the IRF event if LON communication is in use.
The code indicates the first internal fault detected by the self-supervision system.
The fault code can be read from the menu even though the relay has returned to
normal operation.
Do not reset the transformer terminal before reading the IRF code. The
code should be noted when overhaul is ordered. In case of a repeating
IRF, send the relay to the manufacturer.
The following table gives an overview of the fault origin.
Codes Explanation
0 -> Faults related to a module of the transformer terminal, e.g. the MIMIC
card, BIO/PS cards and RTD/analog module
3000 -> Faults related to the parameter database
6000 -> Faults related to the analog measurement inputs
7000 -> Software faults
15000 -> Faults related to testing

Serial communication

The transformer terminal has three serial communication ports, one on the front
panel and two on the rear panel.
Serial communication port assignment
The bus communication protocol for the rear interface RS-232 (connector X3.2) is
selected via the "Protocol 2" setting parameter and the bus communication protocol
for the rear interface RS-485 (connector X3.3) is selected via the "Protocol 3"
setting parameter. These parameters can be modified by using the local menu
(Communication/General)or by using the Relay Setting Tool.
1MRS755225