Nexen RSTC1100 964528 - Manual (Page 12)

9 FORM NO. L-21230-B-0908
Calibration Set 1
52: Tare Tension fl oating point, read and write. Tare Tension has a range of 0.0 to 10,000.0 lbs. Tare Tension is
typically set to 0 and represents the web tension at the tare condition when the load cells measure only the weight
of the tension sensing roller and its associated hardware.
53: Span Tension fl oating point, read and write. Span Tension has a range of 0.0 to 10,000.0 lbs. Span Tension
represents the load seen by the load cells when a known web tension is applied that is less than the Maximum
Tension Setpoint.
51: Load Cell Measure Flag integer, read and write. Load Cell Measure Flag is only used after Tare Tension and Span
Tension parameters have been written.
1. Remove any web tension from the tension sensing roller and then write a 1 to Load Cell Measure Flag. This
calibrates the load cell tare condition.
2. Read Load Cell Measure Flag to determine when previous calibration step is complete. Under normal
conditions, the tare calibration takes 15 seconds. Calibration step is complete when fl ag = 0.
3. Apply the web tension load that was sent to the Span Tension parameter and then write a 2 to Load Cell
Measure Flag. This calibrates the load cell span condition.
4. Read Load Cell Measure Flag to determine when previous calibration step is complete. Under normal
conditions, the span calibration takes 6 seconds. Calibration step is complete when fl ag = 0.
5. Remove any web tension from the tension sensing roller and write a 3 to Load Cell Measure Flag. This checks
the load cell tare condition.
6. Read Load Cell Measure Flag to determine when previous calibration step is complete. Under normal
conditions, the tare check takes 2 seconds. Calibration step is complete when fl ag = 0.
Load Cell Calibration Set 1 is now calibrated.
Calibration Set 2
54: Tare Tension fl oating point, read and write. Tare Tension has a range of 0.0 to 10,000.0 lbs. Tare Tension is
typically set to 0 and represents the web tension at the tare condition when the load cells measure only the weight
of the tension sensing roller and its associated hardware.
55: Span Tension fl oating point, read and write. Span Tension has a range of 0.0 to 10,000.0 lbs. Span Tension
represents the load seen by the load cells when a known web tension is applied that is less than the Maximum
Tension Setpoint.
51: Load Cell Measure Flag integer, read and write. Load Cell Measure Flag is only used after Tare Tension and Span
Tension parameters have been written.
1. Remove any web tension from the tension sensing roller and then write a 4 to Load Cell Measure Flag. This
calibrates the load cell tare condition.
2. Read Load Cell Measure Flag to determine when previous calibration step is complete. Under normal
conditions, the tare calibration takes 15 seconds. Calibration step is complete when fl ag = 0.
3. Apply the web tension load that was sent to the Span Tension parameter and then write a 5 to Load Cell
Measure Flag. This calibrates the load cell span condition.