8 Configuration
52
Action/
range response
AcrA
0
1
2
3
absolute/off
relative/off
absolute/on
relative/on
Defines the switching action of the limit comparators and the
switch status for an overrange or underrange.
Action:
Defines the switching action of the limit comparators on a
setpoint change or power-on.
absolute:
At the time of alteration, the limit comparator acts according
to its function.
relative:
The limit comparator is in the OFF status.
An alteration of the limit value or the (limit comparator)
setpoint could cause the limit comparator to switch ON. Such
a reaction will be suppressed, and this condition is maintained
until the (limit comparator) process value has moved out of
the switch-on region (gray area).
Example:
Monitoring the (controller) process value x with function lk4
Setpoint alteration w
1
→w
2
a) Initial condition
b) Condition at the time of the alteration
The limit comparator remains OFF, although the process value
is within the switch-on region.
c) Stabilized condition
The limit comparator again operates in accordance with its
function.
This function also prevents a limit comparator from being
triggered during the approach phase.
Switch-on delay
t0n
0…9999 Delays the switch-on edge by a definable time period
Switch-off delay
t0FF
0… 9999s Delays the switch-off edge by a definable time period
Limit comparator 1
LC1 ➔
Limit comparator 2 LC2 ➔
Limit comparator 3 LC3 ➔
Limit comparator 4
LC4 ➔
Symbol Value/selection Description
Factory settings are shown bold.
To Next Page
Loading...
