Rice Lake iQUBE2 Digital Diagnostic Junction Box - Manual (Page 55)

Diagnostics 51
Cell Drift Error, <D> = D
The drift diagnostic is used principally for tank and hopper scales that never reach zero.
Query Command Example:
DIA.DRIFT
DIA.DRIFT=SC1 2.0% 4:429.4;
The cell drift query above, DIA.DRIFT, returns information including the scale number (SC1), the allowed drift
range (2.0% of scale capacity), and the amount of drift, in microvolts, seen by a load cell (4:) that exceeded the
specified drift range (429.4
V).
Parameter Setting Commands Example:
SC1.DIA.DRIFT=ON
Enables the cell drift diagnostic test for Scale 1.
SC1.DIA.DRIFT.RANGE=5
Sets the allowed difference in weight, as a percentage of total scale capacity, between the current value on the scale
and the value when the previous drift test was run to 5% of scale capacity. The default value is 2 (2%); allowed val-
ues are 0–100.
SC1.DIA.DRIFT.THRESH=5
Sets the threshold for running the cell drift diagnostic test to 5% of scale capacity. (That is, the test for cell drift is
not made until the scale reaches 5% of capacity.) The default value is 2 (2%); allowed values are 0–100.
SC1.DIA.DRIFT.TIME=15
Sets the number of seconds to wait between successive cell drift diagnostic tests to 15 seconds. The default value is
10 (10 seconds); allowed values are 0–300 seconds.
Cell Noise Error, <D> = N
The noise diagnostic flag is set when a single cell experiences noise greater than the configured noise threshold.
Query Command Example:
DIA.NOISE
DIA.NOISE=SC1 1.00 1:1.10 3:1.08;
The cell noise query above, DIA.NOISE, returns information including the scale number (SC1), the value set as the
system noise threshold (1.00
V), and the noise values of two cells (1: and 3:) that exceed the threshold (1.10 and
1.08
V).
Parameter Setting Commands Example:
SC1.DIA.NOISE=ON
Enables the peak-to-peak noise diagnostic test for Scale 1.
DIA.NOISE.THRESH=20
Sets the maximum allowable noise threshold to 20 microvolts (
V). The default value is 10 (10 V); allowed
values are 0.01–1000
V.
Only one noise threshold value can be specified for the entire system. All load cells use the same threshold value
regardless of which scale they are attached to.
SC1.DIA.NOISE.TIME=15
Sets the number of seconds to wait between successive noise diagnostic tests to 15 seconds. The default value is 10
(10 seconds); allowed values are 0–300 seconds.
Unbalanced Load Error, <D> = L
The unbalanced load diagnostic flag is set when the scale load is not evenly distributed between the load cells. The
error can be caused by unbalanced loading of the scale or by non-linear weight distribution caused by scale bind-
ing.
Query Command Example:
Given a scale, SC1, with a capacity of 120,000 lb:
DIA.UNBAL
DIA.UNBAL=SC1 5.0% 1:17760.0 2:4500.0;
The unbalanced load query above, DIA.UNBAL, returns information including the scale number (SC1), the range
of allowed weight variation between cells (5% of scale capacity), and the weight values of cells exceeding the
Note