Cardinal 225NEST User manual

225NEST Operation Manual
For Analog and Digital Systems

4400-0020-0M Rev C 225NEST Operation
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COPYRIGHT
All rights reserved. Reproduction or use, without expressed written permission, of editorial or
pictorial content, in any manner, is prohibited. No patent liability is assumed with respect to the
use of the information contained herein.
DISCLAIMER
While every precaution has been taken in the preparation of this manual, the Seller assumes
no responsibility for errors or omissions. Neither is any liability assumed for damages resulting
from use of the information contained herein. All instructions and diagrams have been checked
for accuracy and ease of application; however, success and safety in working with tools
depend largely upon the individual accuracy, skill, and caution. For this reason, the Seller is
not able to guarantee the result of any procedure contained herein. Nor can they assume
responsibility for any damage to property or injury to persons occasioned from the procedures.
Persons engaging the procedures do so entirely at their own risk.
FCC COMPLIANCE STATEMENT
This equipment generates, uses, and can radiate radio frequency and if not installed and used
in accordance with the instruction manual, may cause interference to radio communications. It
has been designed within the limits for a Class A computing device pursuant to Subpart J of
Part 15 of FCC rules to provide reasonable protection against such interference when
operated in a commercial environment. Operation of this equipment in a residential area may
cause interference in which case the user will be responsible to take whatever measures
necessary to correct the interference.
You may find the booklet “How to Identify and Resolve Radio TV Interference Problems”
prepared by the Federal Communications Commission helpful. It is available from the U.S.
Government Printing Office, Washington, D.C. 20402. Request stock No. 001-000-00315-4.
SERIAL NUMBER _____________________________________
DATE OF PURCHASE _________________________________
PURCHASED FROM ___________________________________
____________________________________________________
RETAIN THIS INFORMATION FOR FUTURE USE
PRECAUTIONS
Before using this product, read this manual and pay special attention to all
"NOTIFICATION" symbols:
IMPORTANT
ELECTRICAL
WARNING
STATIC
SENSITVE

4400-0020-0M Rev C 225NEST Operation
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PROPER DISPOSAL
When this device reaches the end of its useful life, it must be properly disposed of. It must not
be disposed of as unsorted municipal waste. Within the European Union, this device should be
returned to the distributor from where it was purchased for proper disposal. This is in
accordance with EU Directive 2002/96/EC. Within North America, the device should be
disposed of in accordance with the local laws regarding the disposal of waste electrical and
electronic equipment.
It is everyone’s responsibility to help maintain the environment and to reduce the
effects of hazardous substances contained in electrical and electronic equipment
on human health. Please do your part by making certain that this device is
properly disposed of. The symbol shown to the right indicates that this device
must not be disposed of in unsorted municipal waste programs.
CAUTION
CAUTION: RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT
TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS.
ATTENTION: RISQUE D'EXPLOSION SI LA BATTERIES EST REMPLACE'E PAR
UN TYPE INCORRECT. REJETEZ LES BATTERIES UTILISE'ES SELON LES
INSTRUCTIONS.

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TABLE OF CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 1
ARMOR Digital Truck Scale with SMARTCELL Load Cells . . . . . . . . . . . . . . Page 2
ARMOR Truck Scale with Analog Load Cells . . . . . . . . . . . . . . . . . . . . . . . . .
Page 2
SELECT TEST MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 3
1. ANALOG TESTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
2. SMART SCALE TESTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
DISPLAY CONTRAST ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 4
DIGITAL SCALE DIAGNOSTICS
NEST DIGITAL PORTS AND CABLE TEST REMOTE . . . . . . . . . . . . . . . . .
Page 6
SMART SCALE TESTER . . . . . . . . . . . . . . . . . . . . . . . .
Page 7
PWR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 7
1. CABLE TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 7
How to Test Load Cell Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7
Auto Load Cell Cable Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8
Manual Load Cell Cable Test ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8
How to Test the Homerun Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 9
Auto Homerun Cable Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 10
Manual Homerun Cable Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 10
Reconnect the Homerun Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 11
2. CELL TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 13
ANALOG SCALE DIAGNOSTICS
NEST ANALOG TESTING CABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 16
SIGNALS DISPLAY .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 17
MINIMUM-MAXIMUM DISPLAY . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 18
SIGNALS MINUS ZERO REFERENCE DISPLAY .... . . . . . . . . . . . . . . . . .
Page 19
KEYPAD FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 20
STANDARD KEYS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 20
SOFT KEYS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 20
DAC Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 20
MODE Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 20
^SCROLLv Key ... . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . .
Page 20
CELLS Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 21

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TABLE OF CONTENTS, CONT.
SERIAL COMMANDS
Digital Scale Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 31
Analog Scale Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page 39
Commands Common to Both Digital and Analog Scales . . . . . . . . . . . . .
Page 47

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INTRODUCTION
The 225NEST is a diagnostic tool for use with Cardinal ARMOR Digital Truck Scales with
SMARTCELL load cells and ARMOR Truck Scales with analog load cells and junction boxes.
The NEST provides fast, accurate and ultra-portable truck scale diagnostics. Quickly test
individual load cells, the load cell cables, and check the home run and weight indicator
connections. Unique to the weighing industry, the NEST provides a service technician the
toolkit to see where a scale’s potential issues may exist within seconds.
Features
•Rechargeable Battery Power
•Weatherproof Outdoor-Grade Rugged Carrying Case
•Wi-Fi Standard for Connectivity with Free NEST Mobile App

4400-0020-0M Rev C 225NEST Operation
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ARMOR Digital Truck Scale with SMARTCELL Load Cells
When used on a digital truck scale, the NEST will perform tests on the digital load cells, the
load cell cables, and the homerun cable.
On a digital load cell, the NEST will test both communication loops, the analog section, and
check the load cell for internal drift. In addition, it will display the milliamps current the load cell
is pulling. When the load cell test has completed, it will display Pass or Fail on the screen.
The NEST will conduct a voltage test on the load cell and homerun cables. The cable test can
be performed in an automatic mode or a manual testing mode. When started, the automatic
test mode steps through each voltage level continuously until stopped by the technician. The
manual mode, allows the technician to step through the voltage levels and observe the test
voltage and voltage drop across the cable.
Both cable test modes will display a Pass or Fail result on the screen.
ARMOR Truck Scale with Analog Load Cells
On a Cardinal Armor truck scale with junction boxes and analog load cells, the NEST plugs
directly into the trim board of a scale universal section seal trim box and displays millivolts and
pounds readings for up to 12 load cells and the reading from the junction box summing
circuitry. In addition, the NEST can provide a millivolt output signal for the home run cable to
the digital weight indicator’s analog input.
There are two units of display: millivolts or pounds. The pounds display is a rough
approximation of the weight corresponding to the millivolts reading. At start up, the NEST
assumes the load cells have rated capacity of 75000 lb and rated output of 2 mV/V. It may be
necessary to change the cell parameters to match the scale being tested. See the ANALOG
SCALE DIAGNOSTICS section, CELLS KEY in the KEYPAD FUNCTIONS section to see how
to change the load cell parameters.

4400-0020-0M Rev C 225NEST Operation
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SELECT TEST MODE
The 225NEST is a diagnostic tool for use with Cardinal ARMOR Digital Truck Scales with
SMARTCELL load cells and ARMOR Truck Scales with analog load cells and junction boxes.
To Select the Test Mode
1. Press the ON|OFF key to apply power to the NEST.
2. The display will show the Cardinal Logo, the model number and software revision, and
then change to the TESTER TYPE screen.
TESTER TYPE
1. ANALOG TESTER
15.02
2. SMART SCALE TESTER
Enter Selection: 0
1. ANALOG TESTER
This selection is used to test ARMOR Truck Scales with analog load cells and junction boxes.
1. Press the 1key, and then the ENTER key.
2. The display will change to show the analog scale tester SIGNALS DISPLAY screen.
3. Proceed to the ANALOG SCALE DIAGNOSTICS section of this manual to perform
testing of the analog scale.
2. SMART SCALE TESTER
This selection is used to test ARMOR Digital Truck Scales with SMARTCELL load cells.
1. Press the 2key, and then the ENTER key.
2. The display will change to show the SMART SCALE TESTER screen.
3. Proceed to the DIGITAL SCALE DIAGNOSTICS section of this manual to perform
testing of the digital scale.

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DISPLAY CONTRAST ADJUSTMENT
The NEST uses a combination of the SHIFT, ENTER, and SPACE keys to adjust the contrast
of the LCD display.
To Increase the LCD Contrast
1. Press and hold the SHIFT key and then press the ENTER key.
2. Repeat pressing the ENTER key to increase the contrast to the desired level.
3. When the LCD contrast is at the desired level, stop pressing the ENTER key and
release the SHIFT key to save the setting.
To Reduce the LCD Contrast
1. Press and hold the SHIFT key and then press the SPACE key.
2. Repeat pressing the SPACE key to reduce the contrast to the desired level.
3. When the LCD contrast is at the desired level, stop pressing the SPACE key and
release the SHIFT key to save the setting.

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DIGITAL SCALE DIAGNOSTICS

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NEST DIGITAL PORTS AND CABLE TEST REMOTE
The NEST has three (3) digital ports next to the analog cable gland connectors that are used
when testing the load cells, load cell cables, homerun cable, the CAN bus, and all other
components and functions of the digital scale. A single wire with a clip is also provided to
connect to the outer metal cover of the cables to check if an internal wire is shorted to the
outer metal cover of the cables.
When testing the homerun and load cell cables, a provided CABLE TEST REMOTE is used to
complete the circuit for testing. The CABLE TEST REMOTE serves as a termination for the
cable allowing checks for shorts and continuity.
Digital Cable
Test Port
Homerun
Cable Test
Port
CABLE TEST
REMOTE
NEST Digital Ports
DIGITAL 1
Port
(CAN Bus 1)
DIGITAL 2
Port
(CAN Bus 2)
CABLE TEST
Digital Cable
Test Port
CABLE TEST
Cable
Outer Metal
Cover Clip
CABLE TEST
Cable
Outer Metal
Cover Clip Wire

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SMART SCALE TESTER
1. With the NEST powered on, and the SMART SCALE TESTER selected, the display will
show the following screen:
SMART SCALE TESTER
PWR
1. CABLE TEST
15.16
2. CELL TEST
0.000
Enter Selection: 0
2. Press a numeric key, and then the ENTER key to select a test procedure.
3. After entering a selection, the display will change to the selected test procedure screen.
Note that additional selections and functions will be displayed on the individual test screens.
PWR
This section of the SMART SCALE TESTER display shows the power supply voltage (in
VDC) for the NEST and the amps the load cell is pulling. The upper number is the power
supply voltage for the NEST, and the lower number is the amps the load cell is pulling.
1. CABLE TEST
This selection is used to test the load cell cables and the Homerun cable.
How to Test Load Cell Cables
1. Disconnect both ends of the load cell cable you want to test from the digital load cells.
NOTE: You do not have to remove the load cell cable from the truck scale.
2. Connect one end of the load cell cable to be tested to the digital cable test port on the
CABLE TEST REMOTE, and the other end to the CABLE TEST port on the NEST.
3. Next, connect the wire with the clip from the NEST to the outer metal cover of the cable.
This allows the test to check for an internal wire shorted to the outer metal cover.
4. Press the 1key, and then the ENTER key.
5. The display will change to show the cable test screen.
NOM.
ACTUAL
PASS/FAIL PWR
0
0.00V
0.00V
PASS
15.16
0.000
AUTO
N
EXT
EXIT

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Auto Load Cell Cable Test
1. Press the AUTO key to test the load cell cable automatically at all voltages. Note that the
AUTO test will display a count of tests (Pass:) and a count of any failures (Fail:).
NOM.
ACTUAL
PASS/FAIL
PWR
1
0.41V
0.42V
PASS
11.30
0.000
Pass:
314 Fail: 0
MANUAL
START
EXIT
2. Press the STARTkey to begin the AUTO test or press the MANUAL key to return to the
previous screen and manually test the load cell cable.
3. Press the STOP key to stop the AUTO test.
4. Press the EXIT key to return to the SMART SCALE TESTER screen.
Manual Load Cell Cable Test
1. Press the NEXT key to test the load cell cable manually at various voltages. See the
table below for the test voltages and acceptable actual voltages.
2. Continue to press the NEXT key to step through each voltage test.
NOM.
ACTUAL
PASS/FAIL
PWR
1
0.41V
0.42V
PASS
15.27
0.002
AUTO
N
EXT
EXIT
NOTE: Actual voltages should be within ±0.05V of test voltage.
Test Step
Test Voltage
Actual Voltage
0
0.00V
-0.05V to 0.05V
1
0.41V
0.36V to 0.46V
2
0.83V
0.78V to 0.88V
3
1.24V
1.29V to 1.29V
4
1.65V
1.60V to 1.70V
5
2.06V
2.01V to 2.11V
6
2.48V
2.43V to 2.53V
7
2.89V
2.84V to 2.94V
3. Press the EXIT key to exit the manual load cell cable test, and return to the SMART
SCALE TESTER screen.

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How to Test the Homerun Cable
1. Disconnect the Homerun cable from the digital load cell. NOTE: You do not have to
remove the Homerun cable from the conduit between the truck scale and scale house.
2. Connect the end of the Homerun cable disconnected from the digital load cell to the
CABLE TEST port on the NEST.
3. Next, connect the wire with the clip from the NEST to the outer metal cover of the cable.
This allows the test to check for an internal wire shorted to the outer metal cover.
4. Remove the 225D indicator power cord from the wall outlet, and then remove the 14
acorn nuts securing the rear panel to the main housing.
5. Lift the rear panel from the main housing, taking care not to stretch the cable and wires
between the panel and main housing. Lay the rear panel next to the indicator.
IMPORTANT:You may need to loosen the gland connectors for the I/O cables to
allow enough slack in the cable and wires to avoid stretching them.
6. Using a small flat blade screwdriver, press down on the release bars on the P5 terminal
of the 225DLC card, and remove all five Homerun cable wires from the 225DLC card.
7. Referring to the table below (or the label on the CABLE TEST REMOTE) for terminal
connections, connect each wire from the Homerun cable to the terminal block on the
CABLE TEST REMOTE.
CABLE TEST REMOTE Terminal Block
Terminal Label
Wire Color
V- (minus)
RED
CAN L
YELLOW
SHLD
BLACK
CAN H
ORANGE
V+ (plus)
BROWN
8. To terminate a wire, use a small flat blade screwdriver, and press down on the release
bar for the terminal. Insert the wire into the opening, and then remove the screwdriver.
The release bar will return to its original position, locking the wire in place.
9. Repeat the procedure until all five wires are in place.
10.Next, on the NEST keypad, press the 1key, and then the ENTER key.
11.The display will change to show the cable test screen.
NOM.
ACTUAL
PASS/FAIL
PWR
0
0.00V
0.00V
PASS
15.16
0.000
AUTO
N
EXT
EXIT

4400-0020-0M Rev C 225NEST Operation
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Auto Homerun Cable Test
1. Press the AUTO key to test the Homerun cable automatically at all voltages. Note that
the AUTO test will display a count of tests (Pass:) and a count of any failures (Fail:).
NOM.
ACTUAL
PASS/FAIL
PWR
1
0.41V
0.42V
PASS
11.30
0.000
Pass:
314 Fail: 0
MANUAL
START
EXIT
2. Press the START key to begin the AUTO test or press the MANUAL key to return to the
previous screen and manually test the Homerun cable.
3. Press the STOP key to stop the AUTO test.
4. Press the EXIT key to return to the SMART SCALE TESTER screen.
Manual Homerun Cable Test
1. Press the NEXT key to test the Homerun cable manually at various voltages. See the
table below for the test voltages and acceptable actual voltages.
2. Continue to press the NEXT key to step through each voltage test.
NOM.
ACTUAL
PASS/FAIL
PWR
1
0.41V
0.42V
PASS
15.27
0.002
AUTO
N
EXT
EXIT
NOTE: Actual voltages should be within ±0.05V of test voltage.
Test Step
Test Voltage
Actual Voltage
0
0.00V
-0.05V to 0.05V
1
0.41V
0.36V to 0.46V
2
0.83V
0.78V to 0.88V
3
1.24V
1.29V to 1.29V
4
1.65V
1.60V to 1.70V
5
2.06V
2.01V to 2.11V
6
2.48V
2.43V to 2.53V
7
2.89V
2.84V to 2.94V
3. Press the EXIT key to exit the manual Homerun cable test, and return to the SMART
SCALE TESTER screen.

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Reconnect the Homerun Cable
After the cable test has completed on the Homerun cable, and it has passed, reconnect the
Homerun cable to the 225DLC card in the indicator.
NOTE: If the test on the Homerun cable failed, refer to the 225D Weight Indicator Installation
and Technical manual (8200-0753-0M), for instructions on installing a new Homerun cable.
1. Using a small flat blade screwdriver, press down on the release bars on the CABLE
TEST REMOTE terminals, and remove all five Homerun cable wires from the CABLE
TEST REMOTE.
2. Remove the clip from the outer metal cover of the Homerun cable.
3. Disconnect the Homerun cable from the CABLE TEST port on the NEST.
4. Referring to the table below (or on the circuit board) for terminal connections, connect
each wire of the Homerun cable to the P5 terminal on the 225DLC card.
225DLC Terminal P5
Board Label
Wire Color
V-BUS
RED
CAN L
YELLOW
SHLD
BLACK
CAN H
ORANGE
V+BUS
BROWN
5. To terminate a wire, use a small flat blade screwdriver, and press down on the release
bar for the terminal. Insert the wire into the opening, and then remove the screwdriver.
The release bar will return to its original position, locking the wire in place.
6. Repeat the procedure until all five wires are in place.
7. After all terminations have been made, remove any excess cable from the enclosure.
Press Down Here
Insert Wire Here

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8. Ensure that no cables or wires are exposed between the main housing and the rear
panel, and then place the rear panel onto the main housing.
9. Secure the rear panel to the main housing using the fourteen acorn nuts removed
earlier. Follow a diagonal pattern when tightening the acorn nuts.
9. Securely tighten any cable gland connectors that were loosen earlier.
Do not over-tighten these connectors but make certain they are snug.
DO NOT USE TOOLS! Finger-tighten only!
10.Re-insert the 225D power cord into the wall outlet.
11.Press the ON/OFFkey on the keypad to turn on the 225D indicator.
12.The 225D indicator is ready for normal operations.

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2. CELL TEST
This selection is used to test the digital load cell. The test can be performed on the load cell
while it is still installed in the scale, or after it has been removed.
1. Press the 2key, and then the ENTER key.
NOTE: The test will start as soon as you press the ENTER key.
2. The display will change to show the CELL TEST screen, and power up the load cell.
CELL TEST
PWR
15.16
Powering Up Cell
0.040
EXIT
3. The display will briefly show the power test and milliamps the load cell is pulling.
CELL TEST
PWR
15.16
Power test: 0.040
0.040
4. The NEST will then check both communication loops.
CELL TEST
PWR
15.16
Testing CAN bus 1
0.040
CELL TEST
PWR
15.16
Testing CAN bus 2
0.040
5. Next, it will test the analog section.
CELL TEST
PWR
15.16
Testing analog
0.040

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6. And, finally, it will test the load cell for internal drift. Note that the drift test is 180 seconds
(3 minutes) in length.
CELL TEST
PWR
15.16
Testing drift
0.040
Time Remaining 180
7. While the NEST is testing the load cell for drift, check the bottom number displayed in
the upper right corner of the screen, under the PWR label. This is the amps that the load
cell is pulling.This reading should be between 35 to 45 milliamps of current.
CELL TEST
PWR
15.16
Testing drift
0.040
Time Remaining 103
8. When the load cell test has completed, it will display Pass or Fail on the screen.
CELL TEST
PWR
15.16
Cell Test: Pass
0.040
START
EXIT
9. Press the EXIT key to return to the SMART SCALE TESTER menu.