Sartorius Signum 1 Operating Instruction page 65

Minimum Load
The minimum load required for auto-
matic taring of the container weight on
the platform ("autotare first weight"),
or for automatic printout of results,
is configured in the operating menu,
under:
Appl : m.weigh : 3.5.
You can choose from the following
10 levels for this setting:
1 digit (no minimum load)
2 digits
5 digits
10 digits
20 digits
50 digits
100 digits
200 digits
500 digits
1000 digits
The "digits" here refer to the scale
intervals in the connected weighing
platform. If the interval of the
connected platform is 1 g, for example,
and 1000 digits are required, you must
place at least 1000 g (=1000 intervals
=1000 digits) on the weighing platform
to activate autotaring or autoprint.
Display
The result of a measurement is shown
either as a weight value or in relation
to the target.
– Weight display mode:
The measured value line always shows
the weight value, even if it lies outside
the tolerance range.
The bar graph is displayed with symbols
indicating lower limit, target and upper
limit. The bar shows a logarithmic dis-
play of the current load if the weight is
anywhere from 0 to the minimum load,
and a linear display for weights beyond
that range.
– Result = Threshold status
As "Weight display mode" above,
with the following exceptions:
– LL is shown on the main display
if the weight value is lower than the
target, and
– HH is shown on the main display
if the weight value is higher than
the target
Digital Input/Output Interface
The Checkweighing application sup-
ports the digital input/output interface.
There are 4 control lines, or outputs,
which are activated as follows (see also
the diagram on the right):
– Lighter
– Equal
– Heavier
– Set
In the operating menu, under:
Appl 2 :
check.wg : 4.4.
you can define whether these
control ports are
– off,
– always on,
– activated at stability,
– on within the checking range, or
– active at stability within the
checking range
The "SET" output normally changes
its voltage level when the load is near
the target weight. Alternatively, you
can assign the "Operative" function
(indicating "Ready-for-use") to this
port. Operating menu setting:
Appl 2 :
check.wg : 4.3.
For example, you can use this function
to show the weighed or measured
result on a simple external indicator.
All data output ports have a high
voltage level when:
– the application has not been initialized,
– the weighing instrument is not at
stability and one of the "at stability..."
parameters is selected
– the weight is not within the check-
weighing range
Checking Range
30 % Target weight 170%
Lower Upper
limit limit
Lighter
Equal
Heavier
Set
Operative
Digital Input/Output Interface
– <SET> control output: set
– Activation of port lines: always on
Checkweighing range
30 % Target weight
170%
Lower Upper
limit limit
Lighter
Equal
Heavier
Set
Ready to operate
Digital Input/Output Interface
– <SET> control output: set
– Activation of port lines: within
checkweighing range
Output Port Specifications
– When not in use, the voltage level
is high: >3.7 V/+4 mA
– When activated, the voltage level is low:
<0.4 V/–4 mA
! The data outputs are not protected
from short circuits.
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