AAON Airflow User guide

AAON Airflow Signal Processor
Field Startup Guide
Engineered for accuracy, applicability,
durability and simplicity in HVAC air systems

TABLE OF CONTENTS
TABLE OF CONTENTS................................................................................................................ 3
1. INTRODUCTION .................................................................................................................. 6
1.1. BASIC OPERATION ...................................................................................................... 6
1.2. SPECIFICATIONS.......................................................................................................... 6
1.2.1. Power Supply............................................................................................................ 6
1.2.2. Power Consumption.................................................................................................. 6
1.2.3. Accuracy................................................................................................................... 6
1.2.4. Temperature Input..................................................................................................... 6
1.2.5. Process Output Options............................................................................................. 6
1.2.6. High/Low Alarm Relay Outputs............................................................................... 6
1.3. SAFETY........................................................................................................................... 7
1.3.1. Electrical Connections.............................................................................................. 7
1.3.2. Static Electricity........................................................................................................ 7
2. PRODUCT DIMENSIONS.................................................................................................... 8
3. ELECTRICAL & PNEUMATIC CONNECTIONS .............................................................. 9
4. ACTIVE DISPLAYS & KEY FUNCTIONS....................................................................... 11
4.1. POWER-UP INITIATION DISPLAY........................................................................... 11
4.2. PROCESS DISPLAY DESCRIPTIONS ....................................................................... 11
4.3. KEY FUNCTIONS........................................................................................................ 12
5. FIELD STARTUP ................................................................................................................ 13
5.1. TECH CONFIGURATION MENU............................................................................... 13
5.1.1. MAC Address (BACnet Communication Option).................................................. 14
5.1.2. Instance Number (BACnet Communication Option) ............................................. 14
5.1.3. Modbus ID (Modbus Communication Option)....................................................... 14
5.1.4. Baud Rate (Modbus and BACnet Communication Options).................................. 15
5.2. FIELD SETUP MENU................................................................................................... 15
5.2.1. High/Low Alarm Option......................................................................................... 15
5.2.2. Flow Correction...................................................................................................... 17
5.2.3. Factory Defaults...................................................................................................... 18
6. AAON FACTORY SETTINGS ........................................................................................... 19
6.1. TECH CONFIGURATION MENU............................................................................... 19
6.1.1. Area Factor.............................................................................................................. 20
6.1.2. Altitude ................................................................................................................... 21
6.1.3. Modbus ID (Modbus Communication Option)....................................................... 22
6.1.4. Baud Rate (Modbus and BACnet Communication Options).................................. 23
6.2. FIELD SETUP MENU................................................................................................... 23
6.2.1. Operating Range ..................................................................................................... 24
6.2.2. Engineering Units ................................................................................................... 24
6.2.3. Temperature Compensation.................................................................................... 25
6.3. INPUT/OUTPUT SET-UP............................................................................................. 27
6.3.1. Process Output........................................................................................................ 27
6.3.2. Temperature Input................................................................................................... 27

INDEX OF FIGURES
Figure 1 - Electrical Connections ................................................................................................... 9
Figure 2 - Electrical Connection with Wattmaster Controls......................................................... 10
Figure 3 - Pneumatic Connections................................................................................................ 10

6
1. INTRODUCTION
This guide is intended for field startup of the AAON Airflow Signal Processor. The full AAON
Outdoor Airflow Measurement System Operation and Maintenance Manual (O&M) can be downloaded
from the AAON website at www.AAON.com.
1.1. BASIC OPERATION
The AAON Airflow Signal Processor receives a differential pressure signal from the AAON Airflow
Station. This signal is scaled and linearized before being displayed and transmitted out as a 4-20mA, 0-
5VDC, or 0-10VDC signal.
The AutoZero feature corrects any zero offset caused by large ambient temperature changes. The
Temperature Compensation feature compensates the flow signal for density changes caused by
variations in the air temperature. The AAON Temperature Transmitter provides a temperature input
signal to the AAON Airflow Signal Processor for air density calculations.
1.2. SPECIFICATIONS
1.2.1. Power Supply
20 to 28 VAC/DC
1.2.2. Power Consumption
250mA at 24VAC
175mA at 24VDC
1.2.3. Accuracy
±0.25% full scale
1.2.4. Temperature Input
4-20mA
1.2.5. Process Output Options
0-5VDC
0-10VDC
4-20mA (700Ω maximum load)
1.2.6. High/Low Alarm Relay Outputs
Two single (1 form C) dry contacts rated for:
5 amps at 30VAC/DC
10 amps at 120VAC

7
1.3. SAFETY
1.3.1. Electrical Connections
Before any electrical connections are made, ensure the POWER SWITCH is in the OFF position.
1.3.2. Static Electricity
The circuit board contains components which are susceptible to damage caused by static electrical
discharge. Should it be necessary to remove the circuit board from the enclosure, appropriate
precautions must first be taken to ensure that the operator and the circuit board are at the same electrical
potential.

8
2. PRODUCT DIMENSIONS
        
100,000 ACFM
75 F *
J1 J2
TOTAL
CONNECTION STATIC CONNECTION
4.62"
5.785"
2.265"
3.50"
5.25"
Air Fl ow
SIGNAL PROCESSOR
AAON

9
3. ELECTRICAL & PNEUMATIC CONNECTIONS
All electrical and pneumatic connections to the AAON Airflow Signal Processor have been made at the
factory as shown in Figures 1 through 3 below, with the exception of the electrical connection for
network communication options other than with WattMaster Controls, if applicable. The following
procedure outlines the steps for installing the interface wiring for network communication and for
turning ON the AAON Airflow Signal Processor. Skip Step 3 if network communication is not required
or if WattMaster Controls are provided.
Caution - All electrical connections must be made with the AAON Airflow Signal Processor Power
Switch in the OFF position.
Step 1. Remove the corner mounting screws on the AAON Airflow Signal Processor cover by
turning each screw counter clockwise.
Step 2. Remove the cover.
Step 3. If network communication is required, verify that the Power Switch (S3) is in the OFF
position and install the interface wiring for Pins 9 and 10 as shown in Figure 1. The three
electrical connectors (J1, J2, and optional J3) have removable terminal blocks for ease of
installing the interface wiring.
Step 4. Turn the Power Switch (S3) to the ON position; see Section 4.1 and 4.2 for display
descriptions.
Step 5. Configure the required parameters as outlined in Section 5; see Section 4.3 for a
description of the Key locations and functions.
Step 6. Replace the cover by turning each corner cover mounting screw clockwise.
J1
1 2 3 11 12 13 14 15 16 17 18
4 5 678
J3 (ALARM OPTION)
J2
ON
OFF
POWER
SWITCH
ENTER
ESC
109
LON
INPUT
TEMP.mA
V
PROC.
OUTPUT
mA
V
10V
5V
(24VAC/DC)
POWER SUPPLY
ANALOG RECEIVING DEVICE
PROCESS OUTPUT
S1 S2 S4
+
-
TEMPERATURE OUTPUT POWER (+ 24VDC)
- TEMPERATURE (GND)
+ TEMPERATURE INPUT
+ NETWORK COMMUNICATION
- NETWORK COMMUNICATION
- ANALOG PROCESS OUTPUT(GND)
+ ANALOG PROCESS OUTPUT
8
10
9
EARTH GROUND
124VAC / DC
3
2
J1
4
6
7
5
J2
J3 (ALARM OPTION)
15
17
18
16
11
13
14
12
NC
LOW ALARMNO
NC
COM
PURGE HOLD
HIGH ALARM
COM
NO
SWITCH POSITIONS
SHOWN IN BLACK
S1 POSITION
INDICATING 4-20mA
TEMPERATURE INPUT
S2 AND S4 POSITIONS
INDICATING 0-10VDC
PROCESS OUTPUT
RP1
S3
NETWORK
COMMUNICATION
+
-
AAON
TEMPERATURE
TRANSMITTER
(4-20mA LOOP POWERED)
+
-
Figure 1 - Electrical Connections

10
J1
1 2 3 11 12 13 14 15 16 17 18
4 5 678
J3 (ALARM OPTION)
J2
ON
OFF
POWER
SWITCH
ENTER
ESC
109
LON
INPUT
TEMP.mA
V
PROC.
OUTPUT
mA
V
10V
5V
(24VAC/DC)
POWER SUPPLY
ANALOG RECEIVING DEVICE
PROCESS OUTPUT
S1 S2 S4
+
-
TEMPERATURE OUTPUT POWER (+ 24VDC)
- TEMPERATURE (GND)
+ TEMPERATURE INPUT
+ NETWORK COMMUNICATION
- NETWORK COMMUNICATION
- ANALOG PROCESS OUTPUT(GND)
+ ANALOG PROCESS OUTPUT
8
10
9
EARTH GROUND
124VAC / DC
3
2
J1
4
6
7
5
J2
J3 (ALARM OPTION)
15
17
18
16
11
13
14
12
NC
LOW ALARMNO
NC
COM
PURGE HOLD
HIGH ALARM
COM
NO
SWITCH POSITIONS
SHOWN IN BLACK
S1 POSITION
INDICATING 4-20mA
TEMPERATURE INPUT
S2 AND S4 POSITIONS
INDICATING 0-10VDC
PROCESS OUTPUT
RP1
S3
E-BUS DISTRIBUTION MODULE
+
-
AAON
TEMPERATURE
TRANSMITTER
(4-20mA LOOP POWERED)
+
-
- COMM
+ COMM
GND
THE SHIELDING WIRE SHOULD BE USED TO
CONNECT WATTMASTER GROUND TO AIRFLOW
SIGNAL PROCESSOR GROUND.
Figure 2 - Electrical Connection with Wattmaster Controls
J1 J2
TOTAL
CONNECTION STATIC CONNECTION
TOTAL PRESSURE CONECTION
AAON AIRFLOW STATION
STATIC PRESSURE CONNECTION
AAON AIRFLOW STATION
Figure 3 - Pneumatic Connections

11
4. ACTIVE DISPLAYS & KEY FUNCTIONS
4.1. POWER-UP INITIATION DISPLAY
Upon initial power-up, Software Revision information will be displayed on the graphic display for
approximately 5 seconds.
EQ-1
Software Rev. XX.XXX
Modbus Rev. XX.XXX
4.2. PROCESS DISPLAY DESCRIPTIONS
After power-up initialization, the following information will appear on the graphic display depending
upon the options purchased.
75˚F *
75˚F *
75˚F *
000,000
000,000
000,000
AutoZero ACFM
High Alarm ACFM
Low Alarm ACFM
Flow Monitoring with an Auto
Zero Cycle
Flow Monitoring with a
High Alarm Condition
Flow Monitoring with a
Low Alarm Condition
Number
Description
1
Process value
2
Air Flow temperature units in degree F or C
3
Flashing Asterisk indicates the CPU is functioning
4
Engineering units
5
Displayed during an AutoZero cycle
6
Indicating High Alarm Value has been exceeded (High/Low Alarm Option)
7
Indicating Low Alarm Value has been exceeded (High/Low Alarm Option)
1
1
2
1
3
4
6
7
5

12
4.3. KEY FUNCTIONS
The following figure and description identify the function of each Key.
J1
1 2 3 11 12 13 14 15 16 17 18
4 5 678
J3 (ALARM OPTION)
J2
ON
OFF
POWER
SWITCH
ENTER
ESC
109
LON
INPUT
TEMP.mA
V
PROC.
OUTPUT
mA
V
10V
5V
S1 S2 S4
21
3
4
5
6
78
RP1 9
Number
Description
1
Enter Key - Allows a user to enter into the Field Menu, enter into a selected menu
item, or store into memory changes made to the program.
2
Up Key - Allows the user to scroll up in the menu list to a selected item or increase
digits when making value changes.
3
Right Key - When making changes to user values the Right Key allows the user to
scroll to the correct digit for changes.
4
Down Key - Allows the user to scroll down in the menu list to a selected item or
decrease digits when making value changes.
5
Left Key - When making changes to user values the Left Key allows the user to scroll
to the correct digit for changes.
6
Escape Key - The Escape Key allows the user to back out of the menu to the Active
Display. If a user starts to make a change and decides to cancel the change, the Escape
Key will allow the user to return to the Active Display without making the change.
7
Power Switch –Allows a user to turn power off to the AAON Signal Processor during
field wiring or modifications to the device.
8
Lon Switch –Allows a user to send a unique Neuron device ID when connecting to a
LonWorks communication network.
9
RP1 –Allows a user to adjust the display contrast.

13
5. FIELD STARTUP
The AAON Airflow Signal Processor has been configured by the factory for the specific application.
Therefore, the only parameters that need to be configured in the field are the network communication
settings, with the exception of Modbus® Slave communication with WattMaster Controls which has
been configured at the factory, and the High/Low Alarm Option if ordered. Communication settings
will be configured under the Tech Configuration Menu (see Section 5.1). The High/Low Alarm Option
will be configured under the Field Setup Menu (see Section 5.2).
During field startup, if the displayed value on the AAON Airflow Signal Processor does not match the
reading from the Balancer, a Flow Correction (K-Factor) can also be entered under the Field Setup
Menu (see Section 5.2).
If required, the AAON Factory Settings can be checked or reconfigured following procedures outlined
in Section 6. If parameters are reconfigured incorrectly, all device settings can be restored to the
original AAON Factory Settings (see Section 5.2.3). This guide is intended for field startup only of the
AAON Airflow Signal Processor. The full AAON Outdoor Airflow Measurement System O&M can be
downloaded from AAON’s website at www.AAON.com.
5.1. TECH CONFIGURATION MENU
If a network communication option is ordered the associated settings will need to be configured, with
the exception of Modbus® Slave communication with WattMaster Controls which has been configured
at the factory. To set the parameters refer to the following procedure, below subsections, and Section
4.3 for Key functions.
Step 1. Enter the Tech Configuration Menu by pressing and holding the Up/Down Keys
simultaneously for 5 seconds.
Step 2. Using the Up/Down/Left/Right Keys, enter password number 1000 and press the
Enter Key.
Step 3. Once in the Tech Configuration Menu, use the Up/Down Keys to highlight the
required parameter for configuration as shown in Sections 5.1.1 through 5.1.4.
Press the Enter Key once to access the highlighted parameter Menu.
Step 4. Once in the parameter menu, the parameter can be changed using the
Up/Down/Left/Right Keys. After the parameter has been changed, press the Enter
Key once. Then Press the ESC Key once to return to the Tech Configuration
Menu.
Step 5. After all of the required parameters have been configured, exit the Tech
Configuration Menu by pressing the ESC Key. The Process Display (see Section
4.2) will then be displayed.

14
5.1.1. MAC Address (BACnet Communication Option)
When the BACnet Communication option is ordered, the MAC Address Menu allows the user to set a
unique device address when connecting to a BACnet network. The default is 002. For additional
information refer to the AAON Outdoor Airflow Measurement System O&M.
Tech. Config.
Password: 1000

4PT Flow Corr
MAC Address
MAC Address

(Range = 02 to 254)
Instance Number
Modbus ID
(002)
5.1.2. Instance Number (BACnet Communication Option)
When the BACnet Communication option is ordered, the Instance Number Menu allows the user to set a
unique device address when connecting to a BACnet network. The default is 1002. For additional
information refer to the AAON Outdoor Airflow Measurement System O&M.
Tech. Config.
Password: 1000

4PT Flow Corr
Instance Number
MAC Address
(Default = 1002)
Instance Number

Modbus ID
(01002)
5.1.3. Modbus ID (Modbus Communication Option)
When the Modbus Communication option is ordered, the Modbus ID Menu allows the user to set a
unique device address when connecting to a Modbus network. The default is 002. For communication
with WattMaster Controls the Modbus ID has been set by the factory to 009 for outside airflow
applications. For additional information refer to the AAON Outdoor Airflow Measurement System
O&M.
Tech. Config.
Password: 1000

4PT Flow Corr
Modbus ID
MAC Address
(Range = 01 to 254)
Instance Number
Modbus ID

(002)

15
5.1.4. Baud Rate (Modbus and BACnet Communication Options)
The Baud Rate Menu allows the user to set a unique network baud rate. Modbus communications
supports 9.6, 19.2, 38.4, 57.6 and 115.2 Kbps baud rate. The current BACnet protocol supports 9.6,
19.2, 38.4 and 76.8 Kbps baud rate. The default is 38.4 Kbps. For communication with WattMaster
Controls, the Baud Rate has been set by the factory to 9.6 Kbps. For additional information refer to the
AAON Outdoor Airflow Measurement System O&M.
Tech. Config.
Password: 1000

Baud Rate

Baud Rate
(9.6, 19.2, 38.4, 76.8)
(38.4) Kbps
5.2. FIELD SETUP MENU
The High/Low Alarm Option, if ordered, and Flow Correction (K-Factor) will be configured under the
Field Setup Menu. To set the parameters refer to the following procedure, below subsections, and
Section 4.3 for Key functions.
Step 1. Enter the Field Setup Menu by depressing and holding the Enter Key for 5
seconds.
Step 2. Once in the Field Setup Menu use the Up/Down Keys to highlight the required
parameter for configuration as shown in Sections 5.2.1 through 5.2.3. Press the
Enter Key once to access the highlighted parameter Menu.
Step 3. Once in the parameter menu, the parameter can be changed using
Up/Down/Left/Right Keys. After the parameter has been changed, press the Enter
Key once. Then Press the ESC Key once to return to the Field Setup Menu.
Step 4. After all of the required parameters have been configured, exit the Field Setup
Menu by pressing the ESC Key. The Process Display (see Section 4.2) will then
be displayed.
5.2.1. High/Low Alarm Option
The following menus for configuration of High/Low Alarms are only available if the High/Low Alarm
option is purchased.

16
5.2.1.1. Alarm Status
The Alarm Status allows the user to independently turn each alarm ON or OFF.
Field Setup
Menu

Output Filter
Alarm Status

Low Alarm
Alarm Options

Alarm Value
(On)
Factory Defaults
Alarm Delay
High Alarm
Output Filter
(On)
5.2.1.2. Alarm Values
The Alarm Value Menu allows the user to enter the Low or the High flow alarm value. Alarm values
will be displayed in the same engineering units selected in the Engineering Units Menu (see Section
6.2.2).
- High Alarm Function: The High Alarm activates if the flow exceeds the High Alarm value
and resets when the flow drops below the High Alarm Value.
- Low Alarm Function: The Low Alarm activates if the flow drops below the Low Alarm
Value and resets when the flow exceeds the Low Alarm Value.
Field Setup
Menu

Output Filter
Alarm Status
Lo Alarm Value
Alarm Options

Alarm Value

(000,000)
Factory Defaults
Alarm Delay
Hi Alarm Value
Output Filter
(100,000)
5.2.1.3. Alarm Delay
The Alarm Delay Menu allows the user to enter an alarm delay of 0 to 999 seconds before an alarm will
be activated. The alarm will be reset without a delay.
Field Setup
Menu

Output Filter
Alarm Status
Lo Alarm Delay
Alarm Options

Alarm Value
(000)Seconds
Factory Defaults
Alarm Delay

Hi Alarm Delay
(000)Seconds

17
5.2.2. Flow Correction
The Flow Correction Menu was incorporated into the AAON Airflow Signal Processor to give the user
an easy way to make corrections to the display and output without changing the Operating Range Value
entered by the factory or user. The Flow Correction Menu would be used to correct for a constant error
from zero to the entered Operating Range Value.
5.2.2.1. Flow Correction (K-Factor)
If the user knows the % change required to match the balancers reading, select the K-Factor Menu and
enter this value for the K-Factor. The minimum and maximum allowable K-Factor Value is displayed in
the K-Factor Menu.
Field Setup
Menu

Flow Correction

Flow Correction
AutoZero
K-Factor

K-Factor Range
Temp Comp.
(0.85 / 1.3)
Display Filter
K-Factor Calc.
K=(01.000)
5.2.2.2. Flow Correction (K-Factor Calculator)
If the new K-factor Value needs to be calculated, select the K-Factor Calc. Menu. Enter the Displayed
Value on the AAON Airflow Signal Processor and actual Measured Value, press Enter and the %
change will be calculated and stored as the new K-Factor Value.
Field Setup
Menu

Flow Correction

Displayed Value
AutoZero
K-Factor
(000,000)
Temp Comp.
Measured Value
Display Filter
K-Factor Calc.

(000,000)
-FLOW CORRECTION EXAMPLE-
The balancer is consistently measuring a value of 9,500 CFM, which is 500 CFM less than the 10,000
CFM value on the AAON Airflow Signal Processor display. The user would then perform the following
math function: Measured Value / Displayed Value = K-Factor so 9,500 CFM / 10,000 CFM = 0.950.
The user would enter 0.950 for the K-Factor Flow Correction. If the K-Factor Calculator is used, the K-
Factor Flow Correction would automatically update the K Factor.

18
5.2.3. Factory Defaults
If parameter configuration changes have been made incorrectly to the AAON Airflow Signal Processor,
all device settings can be restored to the original AAON factory settings by selecting YES and pressing
Enter in both the Set To Factory Defaults Menu and the Verify Set To Factory Defaults Menu (see
Factory Defaults table below for a list of Saved Settings).
Field Setup
Menu

Output Filter
Set To
Verify Set To
Alarm Options
Factory Defaults

Factory Defaults
Factory Defaults
Output Filter

(No)
(No)
FACTORY DEFAULTS
ITEM
SAVED SETTING
ITEM
SAVED SETTING
1
All Factory Calibration Points (12)
14
MAC Address
2
Area Factor
15
Instance Number
3
Operating Range
16
Engineering Units
4
4 Pt Flow Correction
17
Display Filter Values
5
Altitude
18
Output Filter
6
K-Factor
19
DP Display Format
7
Lockdown & Delay Values
20
Output Calibration
8
Flow Correction
21
AutoZero Status
9
Flow Coefficient
22
AutoZero Interval
10
Min. & Max. Temp Range Values
23
Temp. Units
11
Alarm Status
24
Temp. Input
12
Alarm Values
25
Temp. Fixed Value
13
Alarm Delay
26
Baud Rate

19
6. AAON FACTORY SETTINGS
To convert the differential pressure signal from the AAON Airflow Station to a flow value, the Area
Factor associated with the AAON Airflow Station has been entered by the factory; see Figure 3 in
Section 3 for proper pneumatic connection of the AAON Airflow Station. The AAON Airflow Signal
Processor Operating Range has also been configured for the specific application and will display the
measured flow rate in Engineering Units of actual cubic feet per minute (ACFM). For air density
compensation, the AAON Airflow Signal Processor receives a temperature input from the AAON
Temperature Transmitter and the job specific site altitude has been entered; see Figure 1 in Section 3 for
proper electrical connection of the AAON Temperature Transmitter and Section 6.3.2 for temperature
input signal configuration. If the Modbus® Slave communication option has been ordered for
communication with WattMaster Controls, the associated settings have been configured at the factory.
The Process Output of the AAON Airflow Signal Processor has been set to 0-10 VDC. The Process
Output is also field selectable (see Section 6.3.1).
Area Factor, Altitude, and Modbus® Slave communication settings are configured under the Tech
Configuration Menu (see Section 6.1). Operating Range, Engineering Units, and Temperature
Compensation, are configured under the Field Setup Menu (see Section 6.2).
6.1. TECH CONFIGURATION MENU
The Area Factor, Altitude, and Modbus® Slave communication settings can be checked or reconfigured
under the Tech Configuration Menu. To set the parameters refer to the following procedure, below
subsections, and Section 4.3 for Key functions.
Step 1. Enter the Tech Configuration Menu by pressing and holding the Up/Down Keys
simultaneously for 5 seconds.
Step 2. Using the Up/Down/Left/Right Keys, enter password number 1000 and press the
Enter Key.
Step 3. Once in the Tech Configuration Menu, use the Up/Down Keys to highlight the
required parameter for configuration as shown in Sections 6.1.1 through 6.1.4.
Press the Enter Key once to access the highlighted parameter Menu.
Step 4. Once in the parameter menu, the parameter can be changed using the
Up/Down/Left/Right Keys. After the parameter has been changed, press the Enter
Key once. Then Press the ESC Key once to return to the Tech Configuration
Menu.
Step 5. After all of the required parameters have been configured, exit the Tech
Configuration Menu by pressing the ESC Key. The Process Display (see Section
4.2) will then be displayed.

20
6.1.1. Area Factor
To convert the differential pressure signal from the AAON Airflow Station to a flow value, the Area
Factor associated with the AAON Airflow Station has been preprogramed by the factory. If the Area
Factor needs to be checked or reconfigured, the correct Area Factor for the AAON Airflow Station can
be found on the AAON Airflow Station product label installed in the air handling unit.
Tech. Config.
Password: 1000

Area Factor

Area Factor
Zero Calibration
(FT2)
Span Calibration
Altitude
(001.000)
If the Area Factor is reconfigured and the new Area Factor causes the existing Operating Range Value to
be outside the new calculated Minimum or Maximum Full Scale Value, the below Warning Message
will appear and the Operating Range will be reset to the new Maximum Full Scale Value by pressing
Enter. The display will automatically jump to the Operating Range Menu allowing the user to enter a
new Operating Range Value. This can be accomplished by performing the steps under Section 6.2.1.
See Area Factor Example below.
Warning Message:
Op Range Outside
Allowable Value
Reset to MAX F.S.
(Press Enter)