Siemens SITRANS WW300 Manuale di istruzioni per l'uso - Pagina 25
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7.7
Weigh idler alignment
Precise idler alignment is very important to achieve maximum accuracy of the weighing system.
Misaligned idlers will result in unwanted forces being applied on each idler in the weighing area,
causing calibration and measurement errors. Verify that the weigh idler is aligned properly. Use
a spirit level to level the load cells.
①
Belt direction
②
Alignment string/wire
Run string to ensure alignment is +1/32" (+0.8 mm) to 0"
(0 mm) aligned with approach and retreat idlers.
7.8
Quick startup overview
1. Verify that the weighfeeder is installed properly as described in Installing (Page 11). Verify
that the belt is tracking and the shear gate (if used) is properly set.
2. Verify that the weighfeeder, integrator/controller, and variable speed drive (AC or DC, if
present) are all properly wired.
3. Refer to the supplied integrator/controller information for calibration and configuration
information.
7.9
Load cell replacement
ALWAYS STOP the belt, lock-out, and/or place a "Do Not Energize" tag on the main
disconnect before working on or around the weighfeeder.
If a load cell on the weighfeeder has been damaged and is not functioning, or if you are
changing the capacity, you will need to replace one or all load cells.
SITRANS WW300
Operating Instructions, 05/2015, A5E33560691-AB
WARNING
Commissioning
7.7 Weigh idler alignment
③
Load cell mount adjustment screws
④
Load cell base locking screws
23