Troubleshooting - Emerson NGA2000 Reference Manual

Reference Manual
748384-C
September 2003
e.

Troubleshooting

Control module hangs up during a re-
set...
Control module out of memory. Press "RE-
INIT" button, or remove power, replace
power and then press "RE-INIT" button.
You may have several analyzers updating
their readings as fast as they can, saturat-
ing the network. In this case, only connect
up one at once, and when it comes up, set
its LON update rate to 10 per second or
once per second. See "Response time" be-
low. Then hook them all back up and try
again. Don't forget to remove the I/O mod-
ules while you do this - if they were not al-
ready bound, they will all bind themselves to
the first analyzer you try this with.
"RE-INIT" button doesn't work...
Control module crashed. Remove power,
replace power, then press "RE-INIT" again.
Even after power up, "RE-INIT" button
doesn't work...
Battery backed RAM is corrupted. Open
the control module, remove the jumper next
to the battery (the cylindrical object above
the board at the near end - the jumper is
just next to the positive end's wire connec-
tion to the board); wait for two minutes, re-
place the jumper and replace the board in
the control module. Then press "RE-INIT"
when power comes up.
1-6 Introduction
NGA2000 Reference
I/O doesn't respond to the analyzer sig-
nals...
The I/O modules aren't bound. This hap-
pens after a "RE-INIT". Don't press this but-
ton unless you mean it! You have to go
through the binding procedure again. You
may have bound all the I/O modules to one
analyzer by powering the system up with
only one analyzer connected, but all the
I/O's connected. If so, press the "RE-INIT"
button and start again. The LON may be
saturated. Try reducing the LON update
rate of all the analyzers to 10 per second.
After a short time the I/O modules should
respond once again.
Several I/O's have the same name...
New I/O modules are all called the same
thing. In order to tell the difference between
them, you have to name them. See the
procedure earlier in this.
Later I/O modules can tell which slot they
are plugged into. You can use this informa-
tion to identify them. It is located in the
same place as the I/O tag name, under
"Listing of all modules.."
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