Non-Fatal Errors - ABB Uvisor SF910i User Manual

17 Diagnostics
17.1 Failures Detected by On-board Diagnostic Routines
Table 17.5: Hardware Circuitry Error Messages
(Continued)
Hardware Circuitry Error Messages
OVERTEMPERATURE
FLAME RELAY FAILURE
SAFE RELAY FAILURE
SENSORS VALUES TOO HIGH
SENSOR TYPE UNKNOWN
SENSOR SHORT FAILURE
INPUT SIGNAL TOO HIGH
FRAM DEADLOCK
A/D CONVERSION FAILURE
REFERENCE VOLTAGE FAILURE
ZERO VOLTAGE FAILURE
CHANNEL 1 VOLTAGE FAILURE
CHANNEL 2 VOLTAGE FAILURE
CLOCK TEST FAILURE

17.1.2 Non-Fatal Errors

Error messages for non-fatal errors are reported through the serial communication
channels, and stored in the Fault History field of the local display.
Table 17.6: Faults Messages and Description
Error Message
NO INPUT SIGNAL
HIGH INPUT LIMIT
FREQUENCY HIGH
8VZZ005286 B
Over temperature
Flame-relay 1 driving failure
Flame-relay 2 driving failure
The input signal of both sensors are higher than 2.45V
Sensor type unknown
Check internal sensor short fault
Input signal too high
EEPROM is no longer responding to read/write requests
Analog input wrong conversion
2.5V reference voltage failure
0V reference voltage failure
Sensor 1 voltage fail
Sensor 2 voltage fail
Wrong frequency: there is a discrepancy between the
CPU oscillator
Low-voltage input and low Flicker-Frequency (less than 5 Hz) [Safe Flame
only]
High voltage limit reached [Safe Flame, 4 to 20 ma]
Low intensity and high Flicker-Frequency error, based on the three
following conditions:
– If Intensity Drop-Out is > 3 AND
– Current Intensity is <= 3 AND
– Frequency > 98
Description
Description
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