Samson foundation 3787, Mounting And Operating Instructions, Page: 70 / 96

Default:
2 Reserved for block alarms.
3...7 The violation of the limit for the high deviation is issued with the
corresponding priority (3= low priority, 7= high priority) to notify the user.
8...15 The violation of the limit for the high deviation is issued with the
corresponding priority (8= low priority,15= high priority) as a critical
alarm.
0
DV_LO_ALM D
Index: 65
Access:
r, w
Shows status of alarm for the low deviation including details about alarm time (date,
time) and about the value which triggered the alarm.
The controlled variable falls below the reference variable by more than the value
determined in the DV_LO_LIM parameter.
Note: Additionally, the active block alarm can be manually acknowledged in this
parameter group.
DV_LO_LIM
S
Index: 59
Access:
r, w
Default:
Used to input the limit for the low deviation. If the controlled variable falls below the
reference variable by this value, the low deviation alarm DV_LO_ALM is generated.
-3402823466 x 10
38
DV_LO_PRI
S
Index: 58
Access:
r, w
Input:
Default:
Determines the action to be taken when the low deviation alarm (DV_LO_LIM) is
exceeded.
0 The violation of the limit for the low deviation is not evaluated.
1 No message issued when a violation of the limit for the low deviation occurs.
2 Reserved for block alarms.
3...7 The violation of the limit for the low deviation is issued with the
corresponding priority (3= low priority, 7= high priority) to notify the user.
8...15 The violation of the limit for the low deviation is issued with the
corresponding priority (8= low priority,15= high priority) as a critical
alarm.
0
FF_GAIN
S
Index: 42
Access:
r, w in MAN, O/S
Default:
Used to input the gain of the feedforward control.
0
Note: The feedforward gain is multiplied by feedforward input (FF_VAL). The result is
added to the output value OUT.
FF_SCALE
S
Index: 41
Access:
r, w in MAN, O/S
Default:
Defines the measuring range (low and high limits), the engineering unit and the
number of digits behind the decimal point of the disturbance variable (FF_VAL).
0...100 %
70
EB 8383-1 EN
Parameter description