Troubleshooting - Conair TrueFeed User Manual

9. Troubleshooting

Problem: The Dual TrueFeed does not come into specification or a Maximum deviation alarm occurred.
Possible causes:
1. Check to ensure all cables are connected correctly.
2. Check to ensure the transport protection pins are removed from the loadcell safety bolts.
3. Check to ensure the hopper assemblies are fixed tightly to the weighing platforms and that the neckpiece is fixed
tightly to the production machine.
4. Check to ensure the feeding cylinders are tightly fixed to the motor shafts.
5. Excessive build-up of material on the feeding cylinders may have an impact on proper feeding.
To avoid this, be sure that the seals and feeding cylinders are clean.
6. Check to ensure there is no tension on the cables connected to the weighing platforms.
7. Use the weight check function with the reference weight to determine the correct function of the weighing system.
8. If the weight check gives the correct result, check if the material flow into the cylinders has been blocked.
9. Another cause may be an obstruction to the weighing system. Check if there is at least
the pointed screws and the loadcell frames or platforms and that there is no material or dirt blocking the
movement.
10. In case of a water-cooled neckpiece, check if there is material build-up around the feeding cylinders and the
water- cooled pipe that can obstruct the free movement of the weighing system.
11. Check if the input signal is stable.
12. If none of the above causes the problem, recalibrate the system and try the weight check again.
Problem: The Dual TrueFeed does come into specification but it seems to be slow.
Possible causes:
1. Extreme vibrations and shocks to the system.
2. Extremely low setpoint. See Section 8: SYSTEM PERFORMANCE
3. In case of use of an automatic hopper loader, check to ensure the hoses are connected correctly.
Problem: The input/start-signal is connected but the unit does not recognize the start signal.
Possible causes:
1. Check if the correct wires are connected for potential free contact, potential contact or tacho. Also check if the (+)
and (–) sides are connected correctly.
[See Sections 6.5, 7.4 and the Wiring diagram in Appendix B.]
2. The first delivered series controllers had a different main board than the present ones. The changes in the wiring
diagram for main boards with the code
be seen in Appendix C.
The version code is printed on the main board.
3. Automatic fuse is activated; for example this can happen when there was a short circuit at the input connection.
To deactivate the automatic fuse, the controller needs to be switched OFF for a period of time and ON again, but
first check and repair the short-circuit.
Problem: The hopper weight is not stable.
Possible causes:
1. Check if the weighing signals are not influenced by external circumstances, for example if the loadcell cable
passes near electromagnetic fields or electro motors.
2. Extreme vibrations and shocks to the system.
3. Check to ensure there is no obstruction to the weighing frames.
4. In case of use of an automatic hopper loader, check to ensure the hoses are connected correctly.
MVC000BA02 (version 2) regarding to the
36
1mm space between all
MVC000BA03 (version 3) can
Dual Feed TrueFeed Manual