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- Batching & Blending
- Filling, Dispensing & Dosing
- Product Inspection
- Weighing in Hazardous Areas
- Other Solutions
- Connectivity Options
Nouvelles gammes de batterie HIDS !
Cliquez ici pour en savoir plus !This answer is true for most of the Hardy controller lines. Exceptions are noted in the text.
If you are adding or subtracting options cards. (i.e. RIO or Profibus communications) You do not need to re calibrate the scale or perform a new rate calibration.
If you add or subtracted hardware from the scale or feeder that changes the weight reading, then the following will apply:
Hardy has improved most of their weight controllers to include the ability to "zero" the scale using the "CAL LOW" parameter in the C2 or traditional calibration menus. This action is targeted for instances where hardware is added or subtracted after the completion of a calibration.
Hardy Rate Controllers do not use the Net weight parameter, so no TARE command is available.
The main reason for gross weight is for refill (refill start low level and low level shutoff parameters). This eliminates the requirement for a ZERO command. All calculations are performed with material in the hopper.
The first possibility for a non zero gross weight is that the scale hardware has changed, which can compromise refill measurements. (The HI 4060 controls using Rate of Change calculations.)
NEXT: This non-return to zero could be a symptom of a scale problem. If, after cleaning the scale, it does not return to zero the scale should be tested. Use a small test weight to verify the scale weight is accurate. If that check is correct, fill and start. If the weight reading is incorrect then a "zero" command would not be the proper step. There may be a bad load cell or a mechanical problem with the feeder. Troubleshoot the scale to verify your weight readings are accurate.
In most cases, if a new zero Gross Weight is needed, a full scale calibration is not necessary. The "cal low" reference point can easily be set to the new desired zero weight, automatically adjusting the calibration slope.
Enter the calibration menu and perform the "cal low" zero instruction. This shifts the calibration while maintaining the correct weight readings and makes the current weight as gross zero.
NOTE: This CAL LO re-zero only capability is not available on the HI 2160RC+, HI2110WI, or HI 2151/30WC controllers