© Munters AB, 2014
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Troubleshooting
# Problem Description
Troubleshooting
1
Installation and filling feed
has been done but silo
stops weighing.
If the display of Silo A does not show A/D '65536' counts on 16
bits, lower the offset (see Figure 7) until this number changes.
After receiving numbers shown on the screen, reducing the
numbers should be done according to:
[65536 – (number of Kg missing in the silo * Silo 1 Scale
Factor)]
After new installation is done and the Silo is empty, the A/D
reading should be around 1000 counts (near zero), use the
offset feature to get it.
If the display shows '0', increase it by using offset feature.
2
The controller display
shows “disconnected” (or
Error) and the test menu
shows 65,536 or 0 rather
than a voltage
measurement that is
required in order to
identify the error.
Check if FJB-4 received voltage from controller (green and black
wires from controller should be approximately 10 DCV). If not
received, check wire connections on the controller's side.
If 10 DCV is received, load cells must be checked (see Table 1
and Figure 9 for further explanation):
Take White and Green wires from each load cell and check their
voltage using a digital multi meter (the amount is not important
but it must be identical throughout load cells with a difference of
up to 2 mV). If difference is more than 2mV there is a problem
with one of the load cells. The range of voltage should be
between 0 to 20 mV depending on Silo load.
In some cases, when the prior test is not effective and voltage
between Black (common) wire and White, and between Black
and Green, wires must be checked (amount of voltage must be
between 4-4.5V and identical throughout load cells).
