FP1500 Installation, Configuration and Commissioning Manual
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•
Disconnect half the installation and perform the auto-search. If the control unit
functions correctly, the problem is to be found in the other half. If it does not function
correctly, the problem is to be found on this section and you should shorten the
installation until you find the point of conflict.
Open circuit or short circuit fault in the loop:
During the cabling of the loop and/or the installation of sensors, there may be an open or
short circuit fault. The following shows how to detect the problem and solve it:
•
If a short circuit or Open circuit occurs, the control unit displays error messages.
•
Check the voltage with a tester, approx. 32 V (see section 7 Technical specifications
for details), at the output terminals of the main board of the control unit.
•
Check the voltage received by each of the connected elements.
•
Go to the elements identified by the control unit as communication errors and
measure their voltage.
5.4.3 Double
addresses
During the configuration of the control unit, errors may occur in the process of allocating
addresses to the elements:
•
Two or more elements have the same address.
•
Not all the connected elements have been detected.
Steps to follow to re-address elements:
•
Once the configuration has finalized, the control unit displays the total of the
connected elements. If any of them has not been detected or if two or more
elements share the same address, they do not appear in the total sum.
•
Perform the auto-search again to ensure that the problem exists and that it has not
been an incidental communication failure.
If the problem persists:
•
After this step, a problem has been found with a certain element. Now the element
must be located. From the [System] menu, access the corresponding loop and then
select the <Elements> option.
•
From this option, check each of the elements and ensure that their addresses are
correct.
•
The element that does not appear is the one that is affecting the system. Once it has
been located, change its address or replace it.
•
If it is a case of double address, two (or more) elements are missing: the one that
has the incorrect and the one that has the correct address.
5.4.4 CPU
failure
The LED on the front of the control unit displays “System Failure”.
Disconnect the control unit and restart it. Check that the LED is not on and carry out the
check of the correct functioning of the system.
If the problem persists, the processor of the control unit needs checking. In this case,
please contact your distributor.