Siemens Reyrolle 7SR46 - Self-Monitoring

Self-Monitoring
The 7SR46 Argus relay is built in with several self-monitoring features. The self-monitoring is performed peri-
odically when the relay boots up. The supervision includes monitoring of power supply signals, code execution
watchdog, memory checks by checksum, RTC check, and battery health checks. The Healthy LED is illumi-
nated when the internal power supply signals are healthy.
Internal Relay Failure (IRF)
The internal relay failure feature monitors the healthiness of the relay and supervises the following scenarios
in the presence of auxiliary power/CT power and generates an IRF event.
•
Unexpected (Watchdog) error
If there is an unexpected behavior of the relay, IRF condition is signaled and the relay restarts.
If this error is observed frequently, send the relay to the factory.
•
Internal supply voltage error
The relay monitors the internal supply voltage and if there is an error, the IRF condition is signaled.
The protection functions are blocked during this condition.
•
Card error
In case of I/O card failure, the error message is displayed and the IRF condition is signaled.
The relay performance is not guaranteed, send the relay to the factory.
•
MLFB error
If the device information data is not correct during the startup, the error message is displayed and the IRF
condition is signaled, send the relay to the factory.
•
Calibration error
The relay checks for the integrity of the calibration data during the startup and displays a message in case
of an error. The IRF condition is signaled.
You can acknowledge the error message via HMI only, the default calibration data is applied to the relay
and the IRF condition is cleared.
The relay is functional only when the calibration error message is acknowledged. In this case, the relay
performance is not guaranteed, send the relay to the factory for calibration.
•
Setting error
The relay checks for the integrity of the settings during the startup and displays a message if there is an
error and the IRF condition is signaled.
You can acknowledge the error message via HMI only, the default settings are applied to the relay and
the IRF condition is cleared.
The relay is functional only when the setting error message is acknowledged.
The following table displays the error messages and the error codes in the Instrument Mode.
Table 8-1
IRF
Errors Error Code Error Message
Setting error 00000001 Load default settings!
Calibration error 00000010 Load default calibration!
MLFB error 00000100 MLFB Information Error!
Card error 00001000 Analog & IO Card Error!
Internal supply voltage error 00010000 –
Unexpected error 00100000 –
8.2
Device Maintenance
8.2 Self-Monitoring
Reyrolle, Operating, Manual 81
C53000-B7040-C103-1, Edition 10.2022