ULFIA CMT-2 User manual

ULFIA Elektronik AB 24-0025-3201-64 CMT-2 Test box
2003-04-21 U.A. rev. 1 page 1of 14
COMPACTION METER TEST BOX, CMT-2.
USER’S MANUAL.
Contents : page
-------------------------------------------------------------------------------------------------
Contents and documents list…………………………………………............ 1
Equipment parts list…………………………………………………………..2
View of CMT-2 unit ………………………….……………………….......... 3
Introduction................................................…...........................…..….......... 4
Connecting the test box to processor CMP-2B........................................….. 5
Connecting the test box to processor CMP-3...................…….......……….. 6
Connecting the test box to processor ALPHA-8.2.....................………….... 7
Description of the test equipment.....................................…………............. 9
Connecting the test box to the compaction meter system...…………............ 10
Using the test box........................................................................…………. 10
test 1 : roller: power to processor.................................................…... 11
test 2 : CMV-indicator.................................................……………… 11
test 4 : processor: power to recorder or onboard computer................. 11
test 6 : processor: power to sensor.................................................…. 11
test 7 : sensor: signal from sensor.................................................…... 11
test 8 : processor and CMV-indicator: CMV/bouncing/range……….. 12
test 9 : processor: CMV-signal to recorder or onboard computer…… 13
test 10 : processor: frequency output to recorder……………………. 13
test 11 : processor: analog voltage output for vibration frequency…... 13
test 12 : processor: analog voltage output for vibration amplitude…... 13
Update notes................................................................................…………. 14
Attachment: CMT-2 basic test guide, 24-0025-3202-64 for easy testing.
See also the following documentation when troubleshooting:
Document ULFIA document no. (pdf)
CMT-2 basic test guide 24-0025-3202-64
CM2 installation manual 11-0027-3500-64
CM2 interconnection diagram 11-0027-1500-63
CMP-2B compaction meter operating manual 21-0026-3200-64
CM2 troubleshooting manual 11-0027-3400-64
Visit also our web-site : www.ulfia.se.

ULFIA Elektronik AB 24-0025-3201-64 CMT-2 Test box
2003-04-21 U.A. rev. 1 page 2of 14
Item Supplier Item no. No. of
pieces
Test box CMT-2 ULFIA 24-0025 1
Carrying case: black, 450x350x130mm TEAM ET 354105 1
User’s manual ULFIA 24-0025-3201-64 1
Basic test guide with CMT-2 “24-0025-3201-64 1
Test lead: 4mm plugs, red, 1m Hirschmann MLN 1
Test lead: 4mm plugs, black, 1m “ “ 1
Crocodile clip: 4mm socket, red, insulated Deltron 567 1
Crocodile clip: 4mm socket, black, insulated “ “ 1
Equipment parts list

ULFIA Elektronik AB 24-0025-3201-64 CMT-2 Test box
2003-04-21 U.A. rev. 1 page 3of 14
Connections to :
CMT-2 unit
ULFIA Elektronik AB
PROCESSOR
EXTENSION
PROCESSOR
RECORDER PROCESSOR
SENSOR
ROLLER
CABLE
SENSOR
CABLE
PROCESSOR
SUPPLY&INSTRUMENT

ULFIA Elektronik AB 24-0025-3201-64 CMT-2 Test box
2003-04-21 U.A. rev. 1 page 4of 14
This equipment is used for troubleshooting compaction meter system, used on vibratory rollers.
All the used units in the system could be checked, including
sensor: ULFIA item no. 23-0020.
processor: CMP-2B (black metal box), ULFIA item no. 21-0026.
or CMP-3 (black metal box), ULFIA item no. 21-0058.
(serial communication and distance pulse interface could not be tested.)
or ALPHA 8. (gray plastic box), ULFIA item no. 24-0012.
CMV-indicator: ULFIA item no. 38-0005, 38-0017.
interconnection cables:
For measurements a separate DMM (Digital MultiMeter) should be connected to the test box.
The DMM should be able to measure DC-voltage(Vdc), AC-voltage(Vac) and resistance(ohm).
The internal resistance of the multimeter should be >=10Mohms.
To test CMP-3 you need an adapter cable, ULFIA 49-0076.
The processor and sensor could also be checked in a service location. An external power supply or
battery is then connected to the test box.
The following tests could be done,
SENSOR :signal output : DC-voltage : constant voltage with or without vibration,
AC-voltage when the sensor is vibrating,
cable to sensor.
PROCESSOR : Power supply voltage output to : recorder or onboard computer,
sensor.
CMV-output signal to the CMV-instrument with the sensor signal simulated
with the built in calibrator in the test-box.
CMV-output signal and frequency pulse output to the recorder or on board
computer with the sensor signal simulated with the built in calibrator in the test-
box.
Output signal(Vdc) to analog frequency indicator.
Output signal(Vdc) to analog amplitude indicator.
Output to bouncing- and CMV-range indicator lamps.
CMV-indicator : Resistance of the signal input,
CMV-indication,
BOUNCING and CMV-range indicator lamps.
ROLLER : Power supply voltage from the roller battery.
Cable harness to processor and CMV-indicator.
Introduction

ULFIA Elektronik AB 24-0025-3201-64 CMT-2 Test box
2003-04-21 U.A. rev. 1 page 5of 14
Connecting the test box to processor CMP-2B
ULFIA Elektronik AB
DRUM
SENSOR
connector
DRUM
SENSOR
ROLLER
CABLE
COMPACTION
METER
PROCESSOR
CMP-2B (black metal case)
12Vdc
BATTERY
or
POWER SUPPLY
POWER &
INSTRUMENT
connector
RECORDER
connector (4 ways male)
12.0
MULTIMETER
DC,AC,Ω
POWER
connection
CMV-
indicator
TEST BOX
CMT-2 Use only this battery connection
when not connected to the roller.
EXTENSION
connector

ULFIA Elektronik AB 24-0025-3201-64 CMT-2 Test box
2003-04-21 U.A. rev. 1 page 6of 14
Connecting the test box to processor CMP-3
ULFIA Elektronik AB
DRUM
SENSOR
connector
DRUM
SENSOR
ROLLER
CABLE
COMPACTION
METER
PROCESSOR
CMP-2B (black metal case)
12Vdc
BATTERY
or
POWER SUPPLY
POWER &
INSTRUMENT
connector
RECORDER and
SERIAL PORT connector
( 7 ways female)
12.0
MULTIMETER
DC,AC,Ω
POWER
connection
CMV-
indicator
TEST BOX
CMT-2 Use only this battery connection
when not connected to the roller.
EXTENSION
connector
adapter
cable
49-0076

ULFIA Elektronik AB 24-0025-3201-64 CMT-2 Test box
2003-04-21 U.A. rev. 1 page 7of 14
Connecting the test box to processor ALPHA 8.2
ULFIA Elektronik AB
DRUM
SENSOR
connector
DRUM
SENSOR
ROLLER
CABLE
COMPACTION
METER
PROCESSOR
ALPHA 8.2
(grey plastic case)
12Vdc
BATTERY
or
POWER SUPPLY
POWER &
INSTRUMENT
connector
RECORDER
connector
12.0
MULTIMETER
DC,AC,Ω
POWER
connection
CMV
instrument
TEST BOX
CMT-2 Use only this battery connection
when not connected to the roller.

ULFIA Elektronik AB 24-0025-3201-64 CMT-2 Test box
2003-04-21 U.A. rev. 1 page 9of 14
To this test box a separate digital multimeter should be used for measuring DC-,AC-voltage and
resistance (ohm).
The test-box also incorporates a signal generator (calibrator) that could simulate the signal from a
sensor for different CMV/bouncing values and frequencies.
The signal to the processor could be selected form either the connected sensor or from the calibrator.
Front panel :
--------------------
TEST NO : rotary switch for measurement selection
(test no. and what measurement function that should be selected on the DMM).
CALIBRATOR : CMV=0,50,100(16%),150(20%) : rotary switch for selecting CMV-
value and (bouncing)-value.
CMV=SENSOR SIGNAL : for measuring the sensor signal.
FREQUENCY : switch for selecting vibration frequency.
INDICATOR/PUSH-BUTTON : CMV-range : indicating/selecting 0-50 CMV range
BOUNCING : indicating/selecting bouncing
DMM+: socket connectors(4mm) for connecting the digital multimeter.
DMM-
EXTERNAL 12V DC : socket connectors(4mm) for connecting a DC-voltage of about
11-14V 1A to power the compaction meter system,
if there is no roller cable.
POWER : lamp for indicating that there is power to the test box.
Rear panel :
--------------------
1.25A : fuse for the EXTERNAL connected power supply.
cables (length=3m) for connecting the test box to the different units in the compaction meter
system :
PROCESSOR - SUPPLY/INSTRUMENT
ROLLER CABLE
PROCESSOR - RECORDER
PROCESSOR – SENSOR
PROCESOR EXTENSION
SENSOR CABLE
Description of the test equipment

ULFIA Elektronik AB 24-0025-3201-64 CMT-2 Test box
2003-04-21 U.A. rev. 1 page 10 of 14
Before you start to connecting the test box, the power to the compaction meter system should be
switched off.
The cables are long enough to test the processor even when it is installed on the roller.
The cables from the test box should be connected in the following way :
PROCESSOR - SUPPLY/INSTRUMENT : to processor
PROCESSOR - RECORDER : to processor
PROCESSOR - SENSOR : to processor
PROCESSOR - EXTENSION : to processor
SENSOR CABLE : to cable coming from the sensor
ROLLER CABLE : to cable coming from roller
The DMM (digital multimeter) should be connected to the two sockets marked DMM +/-.
If the ROLLER CABLE is not connected, a power supply ( 12V DC, 1A) or a battery could be
connected to the EXTERNAL 12V DC sockets and the processor and sensor could be checked.
ATTENTION : make sure that you are connecting with the correct polarity!
Check that all units are connected to the test box.
Switch on the power to the compaction meter system or to the EXTERNAL power source.
Check that the POWER lamp on the test box is on.
Place the rotary switches on the test box in the following positions:
TEST NO. = position 1 (Vdc)
CALIBRATOR-CMV =150(20%)
CALIBRATOR-FREQUENCY = the same frequency as selected on the processor
(if FREQ.CORR.OFF is selected on the processor, any frequency could be selected on the
test box)
Frequency selected on
calibrator FREQ. CORR. rotary switch on processor
rpm = Hz position
1500 25 2
1700 28.3 3
2000 33.3 6
2500 41.7 8
3000 50 10
1500-3000 25 - 50 1 (frequency correction off)
CMV RANGE : not pressed / activated
BOUNCING : not pressed / activated
Connecting the test box to the compaction meter system
Using the test box

ULFIA Elektronik AB 24-0025-3201-64 CMT-2 Test box
2003-04-21 U.A. rev. 1 page 11 of 14
Step through the following tests by turning the knob TEST NO.
ROTARY what you are measuring
SWITCH [ what unit you could test ] If not mentioned all units applies.
POSITION = the correct reading on the DMM
------------- ----------------------------------------------------------------------------------------------------
1DC-voltage from the roller battery or external power supply :
= e.g. 12.2Vdc, (min. 11 max. 14 Vdc).
2Resistance of CMV-indicator :
indicator type: 85mm ULFIA 38-0005 = 428 - 524 ohms
80mm ULFIA 38-0017 = 890 - 925 ohms
3not used
4DC-voltage supply from processor RECORDER connector to pen-recorder
or onboard computer (e.g. CCS-RA2) :
[ CMP-2B, ALPHA 8.2 ]
= 0.7 to 1.2V below voltage level in test 1
5not used
6DC-voltage supply to sensor from processor SENSOR-connector :
= 0.8 to 1.5Vdc below voltage level in test 4 with sensor connected
7DC-voltage from sensor to processor SENSOR-connector (without vibrations) :
= 2.9 to 3.4Vdc
When the drum is vibrating, the signal from the sensor could be checked
with the DMM in Vac-position and CMV-switch in SENSOR SIGNAL position.
Vibration
frequency Vibration amplitude DMM reading (typical)
Hz mm Vac(rms)
27 1.8 0.37
29 1.6 0.38
30 1.7 0.44
33 0.8 0.25
40 0.8 0.36
50 0.5 0.36
70 0.3 0.42
Using the test box, continued

ULFIA Elektronik AB 24-0025-3201-64 CMT-2 Test box
2003-04-21 U.A. rev. 1 page 12 of 14
8Signals to CMV-indicator from processor SUPPLY/INSTRUMENT-
connector :
Wait 5 s and then switch to CMV 150(20%).
With FREQ. CORR. OFF ( rotary switch position =1 ) selected on the processor
and any frequency selected on the CMT-2 test box :
CMT-2 CMT-2 and
CMV-indicator
Calibrator
CMV
position
Boun-
cing
button
CMV-
range
button
DMM
reading =
Vdc
CMV-
indicator
reading on
0-150 scale
(0-50 scale)
Boun-
cing
indicator
CMV-
range
indicator
150 (20%) OFF OFF +4.8 -- +5.2 145 - 155 OFF OFF
“ON OFF +4.8 -- +5.2 145 - 155 ON OFF
100 (16%) ON OFF +3.2 -- +3,5 95 - 105 OFF OFF
“OFF OFF +3.2 -- +3,5 95 - 105 OFF OFF
50 OFF OFF +1.5 -- +1.73 45 - 55 OFF OFF
“OFF ON +4.8 -- +5.2 (48 - 52) OFF ON
0OFF OFF -0.1 -- +0.1 0 - 5 OFF OFF
With frequency correction selected on the processor :
Frequency selected on
calibrator FREQ. CORR. rotary switch on processor
rpm = Hz position
1500 25 2
1700 28.3 3
2000 33.3 6
2500 41.7 8
3000 50 10
1500-3000 25 - 50 1 (frequency correction off)
CMT-2 Calibrator
CMV position DMM reading = Vdc CMV reading on instrument
150 +4.7 -- +5.3 142 - 158
100 +3.1 -- +3,6 93 - 107
50 +1.45 -- +1.75 4 - 55
0-0.1 -- +0.1 0 - 5
Using the test box, continued

ULFIA Elektronik AB 24-0025-3201-64 CMT-2 Test box
2003-04-21 U.A. rev. 1 page 13 of 14
9DC-voltage ,CMV-signal, from processor RECORDER-connector to pen-
recorder or onboard computer (e.g. CCS-RA2) :
[ CMP-2B,CMP-3, ALPHA 8.2 ]
Wait 5 s and then switch to CMV 150.
With FREQ. CORR.OFF ( rotary switch position =1 ) selected on the processor :
CMT-2
Calibrator CMV
position Bouncing button
DMM reading =
(Vdc)
150 (20%) OFF +4.8 -- +5.2
“ON +6.5 -- +7
100 (16%) OFF +3.2 -- +3,5
“ON +3.2 -- +3,5
50 +1.5 -- +1.73
0-0.1 -- +0.1
10 Vibration frequency pulses from processor RECORDER-connector to
frequency meter or onboard computer (e.g. CCS-RA2) :
[ CMP-2B, CMP-3, ALPHA 8.2 ]
= 6 to 8Vac
11 DC-voltage proportional to vibration frequency on EXTENSION connector :
[ CMP-2B, ALPHA 8.2 ] Scale factor = 0.5Vdc / 10Hz
Frequency selected on
CMT-2 calibrator DMM reading = (typical)
rpm = Hz Vdc
1500 25 1.25
1700 28.3 1.41
2000 33.3 1.67
2500 41.7 2.08
3000 50 2.5
12 DC-voltage proportional to vibration amplitude on EXTENSION connector :
[ CMP-2B, ALPHA 8.2 ] Scale factor = 1Vdc / 1mm
Frequency selected on
CMT-2 calibrator DMM reading = (typical)
rpm = Hz Vdc
1500 25 1.4
1700 28.3 1.1
2000 33.3 0.78
2500 41.7 0.5
3000 50 0.34

ULFIA Elektronik AB 24-0025-3201-64 CMT-2 Test box
2003-04-21 U.A. rev. 1 page 14 of 14
Rev. 1 2003-04-21
Test 2 : Range of resistance for CMV indicator 85mm : 428 - 524 ohms.
Range of resistance for CMV indicator 80mm : 890 - 925 ohms.
Test 6 : DC-supply voltage to sensor : 0.8 to 1.5Vdc below voltage level in test 4 with sensor connected.
Update notes