Compact controller ER 2022S and ER 2022SA
8. Configuration
8. 4 Limit comparators” LC”
LC: Limit comparator
Limit comparators (threshold monitors, limit contacts) can be
used to monitor an input variable (process value for the limit
comparator) against a fixed limit or another variable (the setpoint
for the limit comparator). When a limit is exceeded, a signal can
be output or an internal controller function initiated.
4 limit comparators are available
Limit comparators can have different switching functions.
The hysteresis functions “asymmetrical, left” and “asymmetrical,
right” can only be set through the setup program.
The “symmetrical” hysteresis function is used as standard.
lk1
lk2
lk3
lk4
lk5
lk6
Controller
Generator
Limit comparators
Outputs
Binary functions Display
Timer
Interfaces
function (IK)