BERTHOLD TECHNOLOGIES LB 480, Руководство пользователя

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02.2017
8 Error Handling Volume 3
8.2
Device Response to Errors
The following tables provide a description of the error codes, error
and warning messages, information about the reason for the error
and how to remedy the error. To keep the list clearer, we have cre-
ated two separate lists for
SENSITIVE and NORMAL .
The list is so detailed as to cover and diagnose all possible error
sources in such a radiometric measuring system. Thus, it is possible
to offer the user a high level of safety and diagnostic options.
Meaning of the individual columns:
Identifica-
tion Meaning
x An error message is issued.
– No error message is output.
Error Log The error that occurred is written to the error log.
HART
®
An error telegram is digitally output via the HART
®
to the
process control system. The control system must evaluate
the HART
®
signal.
Digital Out The digital output of the detector is actuated.
In the standard version, this is an open collector; a relay
output is also possible.
Fault current The current output switches to fault current.
The 4-20 mA measurement signal is no longer available.
The measurement signal is then available only via the dig-
ital HART
®
protocol.
SHUTDOWN The current output switches to fault current, the HV (high
voltage on the photomultiplier) goes to 0V.
The measurement stops and can only be restarted by a
restart of the detector or a software reset after the prob-
lem is solved.
Self-repair-
ing If the error disappears, then the fault condition is removed
automatically. If the error is not self-repairing, then you
need to reset the error state by rebooting or software
reset.
Quality of measurement value for Master and Slave (only
HART
®
)
1
1. The digital HART
®
protocol conveys the measured value as well
as its quality.
g Measured value is good
u Measured value is doubtful
f Measured value is frozen
b Measured value is bad