ABB Uvisor SF910i, User Manual

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Table 17.5: Hardware Circuitry Error Messages
(Continued)
Description Hardware Circuitry Error Messages
Over temperature OVERTEMPERATURE
Flame-relay 1 driving failure FLAME RELAY FAILURE
Flame-relay 2 driving failure SAFE RELAY FAILURE
The input signal of both sensors are higher than 2.45V SENSORS VALUES TOO HIGH
Sensor type unknown SENSOR TYPE UNKNOWN
Check internal sensor short fault SENSOR SHORT FAILURE
Input signal too high INPUT SIGNAL TOO HIGH
EEPROM is no longer responding to read/write requests FRAM DEADLOCK
Analog input wrong conversion A/D CONVERSION FAILURE
2.5V reference voltage failure REFERENCE VOLTAGE FAILURE
0V reference voltage failure ZERO VOLTAGE FAILURE
Sensor 1 voltage fail CHANNEL 1 VOLTAGE FAILURE
Sensor 2 voltage fail CHANNEL 2 VOLTAGE FAILURE
Wrong frequency: there is a discrepancy between the
CPU oscillator 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
Description Error Message
Low-voltage input and low Flicker-Frequency (less than 5 Hz) [Safe Flame
only] NO INPUT SIGNAL
High voltage limit reached [Safe Flame, 4 to 20 ma] HIGH INPUT LIMIT
Low intensity and high Flicker-Frequency error, based on the three
following conditions: FREQUENCY HIGH
– If Intensity Drop-Out is > 3 AND
– Current Intensity is <= 3 AND
– Frequency > 98
8VZZ005286 B 111
17 Diagnostics
17.1 Failures Detected by On-board Diagnostic Routines