Instruction manual

Instruction Manual
760006-A
September 2001
11-6 Appendices Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA 2000 Platform
Installation
If the Analog I/O Module is received as a
separate unit, carefully examine the ship-
ping carton and contents for signs of
damage. Immediately notify the shipping
carrier if the carton or contents is dam-
aged. Retain the carton and packing ma-
terial until all components are operational.
To install the Analog I/O Module, perform
the General Procedure in Section 2-6.
Bind the Analog I/O Module to an Ana-
lyzer module as detailed in Section 2-6e.
Perform the procedures in Section 11-2.
Initial Setup Procedure
1. Enter the menus.
2. Select Expert controls and setup...
3. Select Auxiliary module setup...
4. Select the analog I/O module.
5. Select Analog output parameters...
6. Select Voltage or current:
7. Select Output value on Analyzer
failure: — if the Analyzer dies, do
you want the output to go to zero,
fullscale, or hold its last value? This
could have safety implications.
8. Select whether the output holds its
value when any of the three alterna-
tives shown happens. If the reading
becomes invalid, if a calibration is
underway or if the menus are en-
tered (maintenance), you can make
the output hold its last value. This
may be undesirable, so consider
this carefully.
Setting up automatic range
change parameters
Go back one menu (into the Analog I/O
Module setup menu), then select Auto-
matic range change parameters...
You can setup how it calculates its range
change points. These are calculated as a
percent of the lower of the two ranges,
always.
NOTE
In V2.2, the range down calculation
was incorrect. Do not use the auto-
matic range change feature with V2.2
I/O modules.
You can also select the hold off times.
The first hold off time is the delay before it
changes range the first time, and the tog-
gle hold off time is a further delay when it
tries to change back immediately. All of
these settings are normally best left in
their default values.
You can also make the output track the
Analyzer range, or make it stay in one
range despite what range is being used
by the Analyzer. Set this on the “Output
on range:” line.
There are six options to this setting:
• Analyzer (Track the Analyzer range)
IO module ID: