Siemens SENTRON PAC4200 Manual page 135

LIMIT LOGIC
SENTRON PAC4200
Manual, 09/2008, A5E02316180B-01
SOURCE
MODE
VALUE
PICKUP DELAY
HYSTERESIS
STATUS
9.2 Parameterizing the operator interface
Monitored data source.
Almost all measured variables can be selected
as the source.
The short codes are assigned to the measured
variables in the Appendix, in the right column
"LIM SOURCE" of the table "MEASURED
VARIABLES".
Default value:
V a
Relational operators
GREATER THAN, LOWER THAN the value in
the "VALUE" field.
Default operator: GREATER THAN
Monitored threshold.
Delay before reporting the limit violation in seconds.
The delay refers to the appearance of the limit
violation or the point of exceeding the threshold
defined in the "VALUE" field. See the figure below
"Effect of delay".
Range: 0 to 10 s
Default value: 0 s
Threshold buffer, prolongs the limit violation.
The hysteresis refers to the disappearance of the limit
violation or the point when the level returns below the
defined threshold.
Range: 0.0 to 20.0 %
Default value: 0,0 %
The percentage refers to the threshold value in the
"VALUE" field. See the figure below "Effect of delay
and hysteresis".
Indicates whether the limit value is currently violated.
Yes, violation.
No, no violation.
Refer to the following section "LIMIT LOGIC"
Parameterizing
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