Nexen RSTC1000 964523 - Manual (Page 16)

13 FORM NO. L-21208-C-0908
4. Read Load Cell Measure Flag to determine when previous calibration step is complete. Under normal condi-
tions, 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 6 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 condi-
tions, the tare check takes 2 seconds. Calibration step is complete when fl ag = 0.
Load Cell Calibration Set 2 is now calibrated.
Calibration Set 3
102 – 103: Tare Tension Floating point number sent as long integer * 1000 in units of lbs, read & write. 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.
104 – 105: Span Tension Floating point number sent as long integer * 1000 in units of lbs, read & write. Span
Tension has a range of 1 to 10,000 lbs and represents the load seen by the load cells when a known web tension is
applied that is less than the Maximum Tension Setpoint.
93: Load Cell Measure Flag Sent as integer, read & write. Load Cell Measure Flag is only used after Tare Tension
and Span Tension registers have been written.
1. Remove any web tension from the tension sensing roller and then write a 7 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 condi-
tions, the tare calibration takes 10 seconds. Calibration step is complete when fl ag = 0.
3. Apply the web tension load that was sent to Span Tension register and then write a 8 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 condi-
tions, 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 9 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 condi-
tions, the tare check takes 2 seconds. Calibration step is complete when fl ag = 0.
Load Cell Calibration Set 3 is now calibrated.