Rice Lake iQUBE2 Digital Diagnostic Junction Box - Manual (Page 61)

Appendix 57
8.2.2 Corner Match
Corner match calibration can be used on any scale base with two or more cells. It is increasingly effective as the
number of load cells in the system increases. Trimming/calibrating the scale requires one measurement for each
load cell in the system with the weight placed directly over the load cell to be trimmed.
Corner match works best on truck scales with 8 or more load cells and on rectangular or odd-shaped bases where
the typical load on the scale cannot be easily centered with respect to all load cells on the system.
Corner match type scales provide the best emulation performance on bases with a larger number of cells (e.g., truck
scales with 8 or more cells). On smaller bases with 5 or fewer cells, it provides the best average emulation perfor-
mance when the center of gravity for the load cannot be easily centered with respect to all the load cells in the sys-
tem (e.g., loads with small footprints on a large base).
8.2.3 2-Point
2-point calibration can be used on any scale base when no trimming is needed. Calibration requires only a zero and
span measurement.
2-point is the only calibration type that can be used on single load cell or pre-trimmed (analog J-Box) type scales.
On multi-cell systems, 2-point works best on bases where the load's center of gravity will normally be centered
with respect to all load cells. This is especially true for tank and hopper scales.
2-point emulation is not allowed on scales defined by a single load cell or bases with a single load cell or pre-
trimmed (analog J-Box). On multi-cell systems, emulation performance is highly dependent on the ability to center
the load with respect to all the load cells in the system. In general, the closer the load footprint size is to the size of
the deck, the better the emulation performance will be.
8.2.4 Cell Emulation in Virtui
2
To enable cell emulation in Virtui 2 :
1. Log in to the Virtui 2 Configuration Utility as a user
with administrator rights (see Section 3.2.1 on
page 25).
2. If the bad cell needs to be identified, use the
Diagnostics Monitor found under the Tools menu to
make that determination.
3. From the Tools menu, select Cell Emulation .
4. From the list of scales on the left side of the Cell
Emulation dialog box, click the scale containing the
bad load cell.
5. From the Simulated Cell list, click the load cell to be emulated.
6. Click the
Download button to enable emulation for the selected load cell.
8.2.5 Cell Emulation in Revolution III
To enable cell emulation in Revolution III,
1. Create a new configuration file or upload an existing configuration from the iQUBE 2 .
2. Connect to the iQUBE 2 (see Section 3.3 on page 30).
3. If the bad cell needs to be identified, use the Diagnostics Viewer found under the Interactive menu to make that
determination.
4. From the Interactive menu, select Cell Emulation . A dialog box similar to Figure 4 appears.
5. From the list of scales on the left side of the Cell Emulation dialog box, click the scale containing the bad
load cell.
6. From the Simulated Cell pull-down menu, select the load cell to be emulated.
7. Click the Download button to enable emulation for the selected load cell.
8.2.6 Cell Emulation with a 920i Indicator
1. When a load cell error occurs press the diagnostic Softkey to view the diagnostic screen.
2. Used the up and down arrows to navigate to the load cell with the error.
3. Press the
Cell Emulation softkey to simulate that load cell.
Only 1 cell may be emulated per iQube Scale.
Figure 8-2. Cell Emulation Dialog Box
Note