ABB Uvisor SF910i, User Manual

Page: 112 / 190

Table 17.6: Faults Messages and Description
(Continued)
Description Error Message
Occurs when parameters are invalid at startup, and input types have
changed since the last startup or software version has changed since
the last startup (this error will automatically switch the product over to
First-Time Power up Mode) RAMS INVALID PARAMS
Occurs when parameters cannot be saved to the EEPROM (this error
will automatically switch the product over to initial startup menu) EEPROM WRITE
Occurs when parameters cannot be saved to the EEPROM (this error
will automatically switch the product over to initial startup menu) EEPROM READ
If a Channel-Fault occurs, the Flame-relay associated with the channel will be
de-energized.
1. The associated Channel LEDs will blink red.
2. The Fault-relay LED will blink red.
If a Product-Fault occurs, all LEDs will blink red.
17.2 Noise Error on Flame Channel
SF910i features a continuous self-check on the incoming flame signal(s) to prevent any
electrical value deemed inconsistent with “real” flame, from being processed as such
thus to lead to unsafe operation.
Electrical signals that are in the same frequency and intensity range of the flame are:
– Electrical noises
– Fault of the sensor board
– AC lights, and so on
For example, SF910i can detect the frequency values that are too stable to be generated
by a flame and associate them with an error that is called ‘noise detected’. This error is
reported if, for instance, the user point the sensor towards a fixed light source such as
the neon light in the room. Since any flame cannot have a ‘constant’ frequency, the
detection of a constant frequency may also be related to an error in the sensor electronics.
8VZZ005286 B 112
17 Diagnostics
17.2 Noise Error on Flame Channel