Instruction Manual
748275-F
September 2003
4-2 System Auto Calibration I/O Module Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 I/O Modules
for the System Auto Cal Module. Those pin
assignments are as follows:
Pin 5 - Relay 7 Pin 12 - Relay 6
Pin 6 - Relay 7 Pin 13 - Relay 6
Pin 7 - Relay 7 Pin 14 - Relay 3
Pin 8 - Relay 5 Pin 15 - Relay 4
Pin 9 - Relay 5 Pin 16 - Relay 1
Pin 10 - Relay 5 Pin 17 - 1-4 COM
Pin 11 - Relay 6 Pin 18 - Relay 2
After calibration, the output signal is then cor-
rected for zero and span. The System Auto
Cal I/O does not provide an analog signal
output. (See Table 4-1 for a complete list of
functions.)
4-2 INSTALLATION
If this I/O Module is received as a separate
unit, carefully examine the shipping carton
and contents for sings of damage. Immedi-
ately notify the shipping carrier if the carton or
its contents are damaged. Retain the carton
and shipping material until all components are
operational.
To install this I/O Module, follow general in-
stallation guidelines in Section 1 and then do
the following:
Bind each Analyzer Module to the System
Auto Cal I/O Module.
Do this through each Analyzer Module's menu
structure. (See instruction manual for individ-
ual Analyzer Module for details.)
Configure System Auto Cal parameters as
follows:
Enter the System Auto Cal Module menu by
making selections in the following path: Main
Menu, Expert Controls and Setup menu, Aux-
iliary Module Controls or Auxiliary Module
Setup menus, and System Auto Cal [module].
(See Figure 4-1 and refer to Section 3 of any
Analyzer Module manual for fundamental
menu structure help.)
In the Auxiliary Module Controls menu and
subsequent sub-menus, set parameters rela-
tive to calibration gas selection and calibration
mode (local/remote/external). Local and re-
mote selections allow the operator to switch
between a local calibration gas injection point
and a remote one. This choice sets the dwell
time according to the distance that the calibra-
tion gas must travel. The external selection
allows the use of an external digital signal car-
ried by digital line 4 (for instance, from a sim-
ple front panel switch) to quickly set either
local or remote mode.
In the Auxiliary Module Setup menu and sub-
sequent sub-menus, set additional parame-
ters such as sequencing cycles, valve control
for zero and span gases, analyzer identifica-
tion and range upper/lower limits, and zero vs.
Span check ratio. (See Figure 4-1 for menu
locations for each of these parameter sets.)
The System Auto Cal I/O Module is now fully
functional.
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