ABB REM 54 Series, Technical Reference Manual

Page: 69 / 110

1MRS750915-MUM
REM 54_
69
Machine Terminal
Technical Reference Manual, General
5.1.12. Self-supervision (IRF)
The machine terminal is provided with an extensive self-supervision system. The
self-supervision system handles run-time fault situations and informs the user of
faults via the HMI and LON/SPA communication. See also Table 5.2.1-12 on
page 85.
5.1.12.1. Fault indication
The self-supervision signal output operates on the closed circuit principle. Under
normal conditions the output relay is energized and the contact gap 3-5 is closed.
Should the auxiliary power supply fail or an internal fault be detected, the contact
gap 3-5 is opened.
A060256
Fig. 5.1.12.1.-1 Self-supervision output (IRF)
When a fault has been detected, the green Ready indicator starts blinking, a fault
indication text is displayed on the HMI and an event, E57, is generated over the
serial communication. The fault indication text on the HMI consists of two rows as
shown below:
A060264
Fig. 5.1.12.1.-2 IRF indication text
Fault indication has the highest priority on the HMI and cannot be overrun by any
other HMI indication. The fault indication text is displayed until cleared by pressing
the C button for 2 seconds. Then the green READY indicator still remains blinking.
If the internal fault disappears the fault indication text remains on the display unless
it has been cleared, but the green READY indicator stops blinking. In addition, an
event E56 is generated over the serial communication.
5.1.12.2. Fault codes
When an internal fault appears in REM 54_, the self-supervision system generates
an IRF code that indicates the type of the fault. The fault code can be read from the
machine terminal main menu
Status/General/IRF code
. The code indicates
the first internal fault detected by the self-supervision system.
IRF
IRF
3
4
5
3
4
5
Normal condition
Fault condition
S E L F S U P E R V I S I O N
* I N T E R N A L F A U L T *