Trouble-shooting Cerabar S/Deltabar S
160 Endress+Hauser
11.2.2 Analog Input Block
If the Analog Input Block receives an input or simulation value with the status BAD, the Analog
Input Block uses the failsafe mode defined in the FSAFE_TYPE
1
parameter.
The following options are available by means of the FSAFE_TYPE
1
parameter:
• Last Good Value
The last valid value is used for further processing with the status UNCERTAIN.
• Fail SafeValue
The value specified by means of the FSAFE_VALUE
1
parameter is used for further processing with
the status
UNCERTAIN.
•Wrong Value
The current value is used for further processing with the status BAD.
Factory setting:
• FSAFE_TYPE
1
: FsafeValue
•FSAFE_VALUE
1
: 0
!
Note!
The failsafe mode is also activated if the "Out of Service" option was selected by means of the
MODE_BLK parameter.
11.3 Confirming messages
Depending on the settings for the ALARM_HOLD_ON_TIME/ALARM DISPL. TIME and
ACKNOWLEDGE_ALARM_MODE/ACK. ALARM MODE parameters, the following measures
should be taken to clear a message:
1 These parameters are not available by means of the ToF Tool operating program.
Settings
1
1) FF configuration program: The parameters are in the Diagnostic Transducer Blocks.
ToF Tool: Menu path for ALARM DISPL. TIME and ACK. ALARM MODE: OPERATING MENU → DIAGNOSTICS
→ MESSAGES
Measures
– ALARM_HOLD_ON_TIME//
ALARM DISPL. TIME = 0 s
– ACKNOWLEDGE_ALARM_MODE/
ACK. ALARM MODE = off
– Rectify cause of the message (see also Section 11.1).
– ALARM_HOLD_ON_TIME/
ALARM DISPL. TIME > 0 s
– ACKNOWLEDGE_ALARM_MODE/
ACK. ALARM MODE = off
– Rectify cause of the message (see also Section 11.1).
– Wait for the alarm display time to elapse.
– ALARM_HOLD_ON_TIME/
ALARM DISPL. TIME = 0 s
– ACKNOWLEDGE_ALARM_MODE/
ACK. ALARM MODE = on
– Rectify cause of the message (see also Section 11.1).
– Confirm message using ACKNOWLEDGE_ALARM/ACK. ALARM
parameter.
– ALARM_HOLD_ON_TIME/
ALARM DISPL. TIME > 0 s
– ACKNOWLEDGE_ALARM_MODE/
ACK. ALARM MODE = on
– Rectify cause of the message (see also Section 11.1).
– Confirm message using ACKNOWLEDGE_ALARM/ACK. ALARM
parameter.
– Wait for the alarm display time to elapse. If a message appears and the alarm
display time elapses before the message has been acknowledged, the message
will be cleared once it has been acknowledged.
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