Ametek CHANDLER ENGINEERING Twin UCA 4262, Operating Manual

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SECTION 4 – TROUBLESHOOTING GUIDE 4-3
Symptom Possible Cause Possible Solution
Measured parameters
display zero when they
should not.
Loose wiring. Find and repair loose connections.
Incorrect or missing I/O
module address in
software.
Use the SCAN.EXE software to
map each I/O channel and make
certain the software is configured
to agree with the existing
addresses.
Two I/O channels have
the same address.
Use the SCAN.EXE software to
configure each I/O channel to have
a unique address.
SCAN.EXE does not
detect all I/O channels.
Loose connection or
blown fuse.
Check fuses and connections.
RS-485 connections are
wired improperly.
Check RS-485 wiring.
Transit time below 14.5
micro-sec/inch at start of
test.
Electronics has locked on
to the wrong signal
Reset affected channel.