Endress+Hauser cerabar S - Analog Input Block (Function Block)

Cerabar S/Deltabar S Description of parameters (FF configuration program)
Endress+Hauser 65
6. 4 Analog Input Block (function block)
Analog Input Block
Parameter Description
ACK_OPTION
Selection
Index: 23
Data type: Bit String
Access: Auto, Man, OOS
Use this parameter to specify which process alarm is automatically acknowledged by the
fieldbus host system at the time it is identified. If the option is activated for a process alarm,
this process alarm is automatically acknowledged by the fieldbus host system.
Options::
• HiHiAlm: upper critical limit value alarm
• HiAlm: upper limit value alarm
• LoLoAlm: lower critical limit value alarm
• LoAlm: lower limit value alarm
• BlockAlm: block alarm
!
Note!
The message must be acknowledged by means of the BLOCK_ALM parameter,
UNACKNOWLEDGE element for process alarms for which automatic confirmation is not
active.
Factory setting:
The option is not active for any process alarm, i.e. every process alarm message must be
acknowledged manually.
ALARM_HYS
Entry
Index: 24
Data type: Float
Access: Auto, Man, OOS
Enter the hysteresis value for the upper and lower alarm value or critical alarm value.
The hysteresis affects the following alarm limit values or critical alarm limit values:
• HI_HI_ALM: upper critical alarm limit value
• HI_ALM: upper alarm limit value
• LO_ALM: lower alarm limit value
• LO_LO_ALM: lower critical alarm limit value
P01-xMx7xxxx-05-xx-xx-xx-007
Fig. 9: Illustration of the output value OUT with limit values and
hysteresis as well as alarms HI_HI_ALM, HI_ALM,
LO_ALM and LO_LO_ALM
Input range:
0.0...50.0 % in relation to the range of the OUT_SCALE group (→ see Page 71)
Factory setting:
0.5 %
t
t
1
0
t
1
0
ALARM_HYS
ALARM_HYS
ALARM_HYS
ALARM_HYS
t
1
0
t
HI_ALM
LO_ALM
HI_LIM
LO_LIM
OUT
HI_HI_LIM
LO_LO_LIM
HI_HI_ALM
LO_LO_ALM
1
0