Emerson NGA2000 - Installation

Instruction Manual
748275-F
September 2003
Rosemount Analytical Inc. A Division of Emerson Process Management Analog Output/3 Alarms
2-3
Model NGA2000 I/O Modules
2-2 INSTALLATION
If this I/O Module is received as a separate
unit, carefully examine the shipping carton
and contents for signs of damage. Immedi-
ately notify the shipping carrier if the carton or
contents are damaged. Retain the carton and
packing materials until all components are
operational.
To install the Analog Output with 3 Alarms I/O
Module, follow general installation guidelines
in Section 1, then do the following:
Perform a hardware zero/span calibration
as follows:
1. Enter the Analog Output Parameters
menu by making selection in the following
path: Main Menu, Technical Level Con-
figuration Menu, Diagnostic Menu,
[choose] Analog/3 Alarms [module], I/O
Module Analog Output Diagnostics Menu
and either Voltage Output Calibration
Menu or Current Output Calibration Menu.
(See Figure 2-1 and refer to Section 3 of
the Analyzer Module manual for funda-
mental menu structure help.)
2. To do both zero and span hardware cali-
brations, the operator must use either the
Measured Output Voltage (or Measured
Output Current) values in either output
calibration menu or output values dis-
played by a calibrated digital voltmeter or
other sensing device (e.g., a computer)
connected to the I/O output line
3. In the I/O Module Analog Output Diagnos-
tics Menu, choose Voltage Output Cali-
bration or Current Output Calibration,
depending on output requirements.
4. Choose Test on the Set to Test for Cali-
bration line.
5. If the operator is doing a Voltage Output
Calibration, follow steps f through i. If the
operator is doing a Current Output Cali-
bration, follow steps j through m.
6. First do the zero calibration. Set the De-
sired Output Voltage to 0.
7. Observe the output value discussed in
step b..
8. Adjust, if necessary, the output value by
scrolling the Zero Offset until the output
value is 0.
9. Next, do the span calibration. Change the
Desired Output Voltage to 5, and scroll
the Gain Factor until the output value dis-
cussed in step 1 is 5.
10. First do the zero calibration. Set the De-
sired Output Current to 0 (if 0 to 20 mA
output is desired) or 4 (if 4 to 20 mA out-
put is desired).
11. Observe the output value discussed in
step b.
12. Adjust, if necessary, the output value by
scrolling the Zero Offset until the output
value is the zero value (0 or 4).
13. Next do the span calibration. Change the
Desired Output Current to 20, and scroll
the Gain Factor until the output value dis-
cussed in step 1 is 20.
After spanning the hardware, the operator
should recheck zero calibration values and
repeat the procedure above if necessary.
Configure alarm setpoints and other pa-
rameters as follows:
1. Enter the Analog Output Module Menu by
making selections in the following path:
Main Menu, Expert Controls and Setup
Menu, Auxiliary Module Setup Menu,
[choose] Analog/3 Alarms [module] and
Analog Output Module Menu. (See Fig-
ure 2-1 and refer to Section 3 of the Ana-
lyzer Module manual for fundamental
menu structure help.
2. Select Voltage or Current Outputs in the
Analog Output Parameters Menu.
3. Select Range Change Control (Lo-
cal/Auto/Remote) in the Automatic Range
Change Parameters Menu.