Configuring The Analog/Digital Converter - Minebea Intec Signum 2 Notice D'installation

Configuring the
Analog/Digital Converter
Purpose
To adapt the parameters of the analog/
digital converter to the connected load
cell or weighing platform. Once these
parameters have been configured, the
A/D converter in conjunction with
the load cell is defined as a weighing
instrument.
Notes on Settings
– The A/D converter can be configured
only with the menu access switch
open (see "Selecting the Configuration
Mode"). Make sure you close the menu
access switch following A/D converter
(ADC) configuration; otherwise, the
"overload" (H) and "underload" (L) error
codes are not shown.
– To enable ADC configuration, activate
the service mode (see "Service Mode"),
open the Setup menu, open the COM-
SPEC submenu, and select ADC-CON.
– Enter the maximum capacity (max. cap.)
in a suitable weight unit, without deci-
mal places (the rounding function will
truncate any decimal places).
! If you return to the highest menu level
without selecting the SAVE menu item
to save changes, all changes made up
to that point are discarded.
– The menu-reset function ("Restore
Factory Settings") does not affect
settings for ADC configuration.
Note:
!
Once the ADC configuration has been
locked (menu access switch closed), the
display and control unit can no longer
be used to influence weighing results.
The scope of functions available in the
weighing instrument is defined by the
A/D converter. Weighing functions that
can be activated include: read weight
value, tare, calibrate/adjust, read tare
value, save/delete tare input
Descriptions of Menu Items
for A/D Converter Configuration
Standard or Verified Configuration
(Menu Items: STAND. / VERIF.)
Before configuring the A/D converter,
you must define whether the weighing
platform is to be used in "standard"
mode or "verified" mode (verified for
use in legal metrology).
– Standard mode: STAND.
– Verified mode: VERIF.
Accuracy Class (Menu Item: CLASS)
Shown only for configuration in
"verified" mode.
Only menu items 3 and 4 (accuracy
class l/m) are accessible. If the
desired menu item is not marked with
a circle (o) indicating it is already active,
press ) repeatedly until this menu
item is activated.
Selecting the Weighing Range (Menu
Item: RANGES)
This setting defines whether the RANGE
1, RANGE 2 and RANGE 3 menu items
for further configuration steps are
shown or hidden.
– Single-range mode (SINGLE):
The entire weighing range is divided
into scale intervals on the basis of the
lowest interval d and the maximum
load. Readability is equal to scale inter-
val d (see below).
– Multi-interval mode (MULT.Int.):
The "Multi-interval" function divides
the weighing capacity into as many as
3 weighing ranges, each with a different
readability. The scale switches from
one range to the next automatically,
in accordance with the range limits
specified. Once the instrument has been
tared, the best possible resolution
(lowest display digit) is available even
when there is a load on the weighing
platform.
– Multiple-range mode (MULT.-R.):
A multiple-range scale has two or three
weighing ranges. When the maximum
capacity of a lower range is exceeded,
the scale switches to a higher range
(lower resolution). The scale can be
returned to the higher resolution only
after the scale has been unloaded.
Scale Interval d
The display digit, d, indicates the
resolution of the weighing instrument.
The display digit can be entered only in
increments of 1, 2, 5, 10, 20, 50, etc.
This menu item is not shown when
the "verified" configuration mode is
active. On verifiable or verified weighing
instruments (class l and m) scale
interval d is equal to verification scale
interval e.
Verification Scale Interval e
The verification scale interval e indi-
cates the resolution of the weighing
instrument in legal metrology. The scale
interval d can be entered only in incre-
ments of 1, 2, 5, 10, 20, 50, etc.
This menu item is not shown when
the "standard" configuration mode is
active.
Maximum Capacity (Max. Cap.)
The maximum capacity is the maxi-
mum load that may be placed on the
weighing instrument. If a heavier load
is placed on the platform, the display
shows "H."
The scale intervals are calculated from
the maximum capacity and the scale
interval d. For example, a maximum
capacity of 15,000 kg with a smallest
scale interval d of 0.005 kg yields
3000 scale intervals.
Maximum readability:
15,000 display digits (not in legal
metrology).
In legal metrology, the number
of intervals must not exceed 3125 e;
for multi-interval scales, the limit is
3125 e per range.
Signum Option A15
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