Clorius Controls ER 2022S - Page 41

Compact controller ER 2022S and ER 2022SA
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8. Configuration
Limit comparator 1 LC1 ➔
Limit comparator 2 LC2 ➔
Limit comparator 3 LC3 ➔
Limit comparator 4 LC4 ➔
Symbol
Value/selection
Description
Action/range
response
AcrA
0
1
2
3
absolute/off
relative/off
absolute/on
relative/on
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
NOTE: Factory settings shown with BOLD text