Load Cell Replacement; Removing Old Load Cell; Installing New Load Cell; Calibration - Siemens milltronics WEIGHFEEDER 1200 Series Instruction Manual

Load Cell Replacement

WARNING: ALWAYS STOP the belt, lock-out, and/or place a "Do Not Ener-
gize" tag on the main disconnect before working on or around the weigh-
feeder.
If a load cell on Milltronics Weighfeeder 1200 has been damaged and is not functioning or
if you are changing the capacity, you will need to replace one or all load cells.
Please read and understand all of the instructions before proceeding with the
Note:
replacement. Contact your Siemens representative for assistance if you have any
questions or problems.

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. Free the load cell cable from the feeder so it is hanging free from the
load cell.
3. Support the scale idler and remove the two front load cell mount bolts. Be
careful not to move the idler as it is still attached to the load cell on the other
side of the weighfeeder.
4. Remove the two bottom load cell mount bolts.
5. Support the scale deck with a block of wood or have an assistant hold it and
slide the load cell off the feeder.

Installing New Load Cell

1. Slide the new load cell into position.
2. Install the two front load cell mount bolts. Tighten them by hand.
3. Start with the bottom load cell mounting bolts and tighten them to 200 in-lb
torque. Now tighten the two front load cell mounting bolts to 200 in-lb torque.
4. Route the load cell cable to the junction box and connect the load cell according
to the supplied interwiring diagram. Repeat for other load cells if necessary.
5. Perform a load cell balancing procedure as described in the integrator
instruction manual.

Calibration

1. Power up the integrator and using the appropriate integrator menu, verify that
the new load cell(s) are operating correctly.
2. Zero calibrate the unit. using the integrator manual for reference. Record zero
calibration procedure results.
7ML19985EH02 Weighfeeder 1200 - INSTRUCTION MANUAL Page 13