Siemens SITRANS WW200 Betriebsanleitung - Seite 22

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Commissioning

7.9 Load cell replacement

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.

Note

Please read and understand all of the instructions before proceeding with the replacement.

Contact your Siemens representative for assistance if you have any questions or problems.

7.9.1

Removing old load cell

1. Confirm the new replacement load cell is correct and functional. Using a digital volt meter or

ohm meter, verify that the resistance of the new load cell matches the resistance printed on

the specification sheet that comes with the load cell. If the resistances do not match, the load

cell may be damaged. Consult your Siemens representative.

2. Disconnect the load cell being replaced from the junction box. Verify that the load cell is

connected according to the interwiring diagram supplied with this manual. Disconnect the

load cell from the load cell junction box. Free the load cell cable from the weighfeeder so it

is hanging free from the load cell.

3. Support the scale deck from below or above, and remove the two top/front load cell

mounting bolts. Be careful not to move the deck as it is still attached to the load cell on the

other side of the weighfeeder.

4. Remove the two bottom load cell mounting bolts.

5. Remove the load cell off the weighfeeder.

WARNING

Operating Instructions, 06/2018, A5E33560654-AC

SITRANS WW200