4. Switching functions
Hysteresis function:
If the level fl uctuates around
the nominal value, the hysteresis
keeps the switch status of the
outputs stable.
When the level is rising,
the output switches when it reaches
the respective switching point (SP);
if the level falls again,
the output switches back only
if the reverse switching point (rSP)
is reached.
(see menu point
FunC, SP, rSP
)
Window function
The window function allows the
monitoring of a defi ned range.
If the level is between
the switching point (SP) and
the reverse switching point (rSP),
the output is activated.
(see menu point
FunC
,
SP
,
rSP
)
Error function
Switch output 2 can be used optionally as an error output
to display level switch function errors. As an error output it is
normally closed, and in case of errors (
Er1
,
Er3
) it is open.
At the same time LED II lights up.
The display and the error output remain active until the error
is cleared. (See menu point
Err
)
It conforms to DESINA when used with
a 4-pole M12x1 connecting plug
5. Analogue output
The level switch has two standardised output signals
from 0-20mA or 4-20mA.
This is a prerequisite for
compatibility with existing systems
Example for display in %:
Example for display in mm:
L1 = length of the sensor
L2 = activ range
SensoControl
UNIT
UNIT
=
=
II
I
40
L2
L1
40
Of
fset
SCLSD-250
SCLSD-370
SCLSD-520
mm/inch
%
SensoControl
UNIT
UNIT
=
=
=
II
I
SET1
SCLSD-XXX
mm/inch
%
SET0
