Instruction Manual ScrubberGuard
Settings
62
14830E/2
8.3.1
Upper and lower threshold value of a limit
A maximum of eight limits with upper and
lower threshold can be programmed.
If the operating mode is set to
Exceeded
(Figure 29), then while the upper threshold
is exceeded the limit is active and remains
active until the lower threshold is again un-
dershot.
If the operating mode is set to
Under-
shot.
, then while the lower threshold is
undershot the limit is active and remains
active until the upper threshold is again ex-
ceeded.
Figure 29: Threshold diagram
Measuring value
Upper threshold
Lower threshold
Time
Limit active
Limit passive
8.3.2
Reading if limit exceeded or undershot
If a limit event occurs during operation, it has the
following effects on measuring mode:
▪
Threshold value display indicates an unusual
state.
▪
If an output for the corresponding limit channel
is programmed, it is switched.
If the message
Limit
appears, the color of the sta-
tus display changes to
white
and the numbers of
the limit channels are listed with their channel num-
bers in
red
if limits have been exceeded or under-
shot.
Inactive limits are indicated with
"
_
".
