Omega Vehicle Security Welding System CCT 80 Series User Manual

Use r s Gu id e  
®
e-mail: info@omega.com  
CCT-80  
Strain Gage Signal Conditioners  
M2218/1201  
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TABLE OF CONTENTS  
PAGE  
Open the Housing . . . . . . . . . . . . . . . . . . . . . . . . 3  
Internal Overview . . . . . . . . . . . . . . . . . . . . . . . . 3  
Power Supply module MA . . . . . . . . . . . . . . . . . . 4  
Changing the Power Supply . . . . . . . . . . . . . . . . 4  
Signal Output module MS . . . . . . . . . . . . . . . . . . 5  
Changing the Signal Output . . . . . . . . . . . . . . . . 5  
Signal Input, module ME Overview. . . . . . . . . . . 6  
CCT-80, Electrical Features (Specifications) . . . 7  
Signal Input Range Selection . . . . . . . . . . . . . 8  
Adjustment and Calibration Procedure . . . . . 8  
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Mechanical Specifications. . . . . . . . . . . . . . . . . 10  
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
2
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C
OPEN THE HOUSING  
A
d
PROCEDURE  
c
1. Insert a screwdriver or similar tool in the  
points marked c.  
e
c
d
2. Turn the screwdriver until the case walls  
begin to separate towards A and B, so the  
two side lugs e, are free.  
B
e
3. Grab the Signal Conditioner body, at the  
points marked d‚ and pull it towards C,  
until the two side lugs e are out of their  
housing and the internal circuits are visible.  
See the sketch below for the disassembly of  
the circuit boards.  
FIG.1  
4. Before reinserting the Signal Conditioner  
body into the case, the following must be  
checked :  
-The front label (blue color) must be in its correct position, with terminals 1 and 7  
(power supply) separated from the other terminals.  
-The three internal modules must be inserted correctly in their internal case guides.  
MA  
Power Supply Module  
C
INTERNAL OVERVIEW  
a
a
A. "ME" Input module.  
MP  
Input board  
B. "MS" Output module.  
C. "MA" Power supply module.  
D. "MP" Input Board.  
FIG.2  
A
B
D
PROCEDURE FOR DISASSEMBLY  
1. Pull out the "ME" input module towards "a".  
2. Pull out the "MS" output module towards "a".  
3. Pull out the "MP" input board towards "b".  
4. To assemble reverse the procedure.  
b
MS Output module  
ME Input module  
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POWER SUPPLY  
RECOMMENDED WIRING  
The power supply must be connected to terminals 1 and 7. The characteristics of the power supply  
are shown on the side label.  
WARNING.- If the power supply is dc voltage, be careful with the polarity indicated for each  
terminal.  
1
3
4
5
6
H i  
INPUT  
/
ENTRADA  
Power supply  
Fuse  
OUTPUTS  
mA  
/
SALIDAS  
Vdc  
+
-
+
-
Lo  
7
9
10 11 12  
FIG. 3  
PRECAUTIONS  
The installation must incorporate safety devices  
to protect the operator and the process when  
using the Transmitter to control a machine or  
process where injury to personnel or damage to  
equipment or process, may occur as a result of  
failure of the Transmitter.  
Power  
supply  
Fuse  
value  
230 Vac  
115 Vac  
48 Vac  
24 Vac  
24 Vdc  
50 mA  
100 mA  
150 mA  
300 mA  
300 mA  
PROTECTIONS  
See on table 1 the recommended value of the  
fuse for the different power supply availables.  
TABLE 1  
CHANGING THE POWER SUPPLY  
The unit is not provided with a system to change the power supply. Therefore if the power supply  
must be modified to other value, please replace the module MA for another one appropriate to  
the new characteristics. Contact your local distributor for instructions.  
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4
SIGNAL OUTPUT module MS  
1
The signal conditioner provides two different analog output  
signals, both proportional to the signal input.  
3
4
5
6
H i  
INPUT / ENTRADA  
Output in Current: 4 to 20 mA, terminals 9 - 10  
Output in Voltage: 0 to 10 Vdc, terminals 11 - 12  
OUTPUTS / SALIDAS  
mA  
Vdc  
Do not use both outputs simultaneously. Only one selection  
can be made.  
Lo  
7
+
9
-
+
-
10 11 12  
The side label shows which one is selected.  
FIG.5  
CHANGING THE SIGNAL OUTPUT  
All signal conditioners are delivered as a standard version, with the analog output selected as  
4 to 20 mA, unless specified otherwise. To select a 0 to 10 V output, remove jumpers E and  
F as shown in Figure 6. Other non-standard output voltage and current ranges may be obtained  
by adding and/or replacing resistors given in Tables 2 and 3.  
NON STANDARD OUTPUT  
CURRENTS  
NON STANDARD OUTPUT  
VOLTAGES  
TABLE 2  
TABLE 3  
Output  
in V.  
Value in Kfor :  
Output  
in mA.  
Value in for :  
R29  
R30  
R31  
R32  
R18  
R24  
R25  
±10  
0 to 1  
0 to 5  
1 to 5  
49.9  
-----  
-----  
-----  
-----  
-----  
-----  
100  
200  
11  
----  
0 to 5  
0 to 10  
1 to 5  
-----  
100  
-----  
-----  
-----  
24.9  
100  
100  
100  
-----  
49.9  
124  
100  
66.5  
100 K  
-----  
0 to 20  
-------  
"-----" means "Resistor must not be installed"  
Jumpers E and F : Closed only if the output is 4 to 20 mA.  
F
E
Replace or add the indicated  
resistors with the values shown  
inTables2and3 forthedesired  
output.  
R18  
R29  
R30  
FIG.6  
R25  
R32  
R24  
R31  
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5
SIGNAL INPUT, module ME  
OVERVIEW  
This module together with the "MP" input board, performs the signal conditioning (see Fig. 2).  
This module contains the trimmers and jumpers for the amplifier gain and the low level output  
(offset).  
The signal input connections are made at Terminals 3, 4, 5 and 6.  
FIG.7  
P1 : Output zero adjustment.  
P2 : Gain amplifier adjustment.  
1
P1  
P2  
2
B
A
C
Solder pads on solder side  
OFFSET ADJUST  
Solder pad 1 if closed : Adjust the low range level of the output (Offset positive coarse).  
Solder pad 2 if closed : Adjust the low range level of the output (Offset negative coarse).  
Jumper A if closed  
: Adjust the low range level of the output (Offset negative fine).  
AMPLIFIER GAIN  
Jumper B if closed  
Jumper C if closed  
: Gain at maximum level  
: Gain at medium level.  
Jumpers B and C opened : Gain at minimum level.  
6
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CCT-80, ELECTRICAL FEATURES  
This signal conditioner provides connection to 4- or 6-wire strain-gages (load-cells), which  
provide a nominal of 2 mV/V or 3 mV/V output with 350 impedance. See the Connections  
Section.  
The signal conditioner does not provides the bridge excitation voltage, therefore is necessary  
to use an external auxiliary power supply. It is advised that you use the model FAR-1 power  
supply, which senses the excitation voltage and compensates the errors due to lead  
resistance.  
The FAR-1 provides a regulated 10 Vdc output.  
The CCT-80 has an internal circuit which provides the user with tare adjust and compensation.  
See the tare paragraph.  
INPUT  
STANDARD SIGNAL  
20 mV  
TARE  
by internal trimmer PT1, located on the "MP"  
input board  
OUTPUT  
0 to 20 mA or 4 to 20 mA  
0 to 10 Vdc  
ACCURACY  
RESPONSE TIME  
GALVANICISOLATION  
R < 600 max. 22 mA ±3%  
L
R > 1000 max. 11 V ±3%  
L
0.2 % FS  
250 mS  
Input, Output and Power Supply are all isolated  
to 2 kVeff. 50 Hz/1 m.  
GENERAL SPECIFICATIONS  
RIPPLE  
BAND PASS  
0.5 %  
1.5 Hz (-3 dB)  
-30° to +80°C  
-10° to +60°C  
0.015 %/°C  
115 Vac (±10%) 50/60 Hz  
1.5 VA  
STORAGE TEMPERATURE  
OPERATING TEMPERATURE  
TEMPERATURECOEFFICIENT  
STANDARD POWER SUPPLY  
POWER CONSUMPTION  
TEST VOLTAGE  
4 kVeff. 50 Hz/1m.  
7
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SIGNAL INPUT RANGE SELECTION  
The "MP" input board for this signal conditioner,  
does not have jumpers because it allows only one  
signal input (0 to 20 mV). To calibrate the signal  
conditioner, follow the adjustment and calibration  
procedure.  
"MP" input board  
The user can field adjust the tare using the trim-  
mer PT1, located on the "MP" input board. See  
Fig. 8.  
The signal input 0 to 20 mV will be the standard  
range for all orders, unless specified otherwise.  
PT1  
FIG.8  
ADJUSTMENT AND CALIBRATION PROCEDURE  
To calibrate the signal conditioner, use a calibrator or Vdc source from 0 to 20 mVdc.  
1. Open the signal conditioner case. (Fig. 2).  
2. Check the "MA" module, if the selected power supply is correct. (Table 1).  
3. Connect the calibrator to the signal conditioner terminals 5 - 6.  
4. Connect a digital multimeter, to the signal output terminals to be used.  
5. Power up the signal conditioner with the correct power supply.  
6. Adjust the calibrator until it generates the low signal level (0 Vdc).  
7. Turn the "ZERO" trimmer (P1), located on the "ME" input module, until the multimeter  
shows the desired low signal output level. (For example: 0 Vdc).  
8. Adjust the calibrator until it generates the high signal level.  
9. Turn the "GAIN" trimmer (P2), located on the "ME" input module, until the multimeter  
shows the desired high output level. (For example: 10 Vdc).  
10. Repeat steps 6 to 9, until the two values are correct.  
TARE ADJUST PROCEDURE  
After the connections between the signal conditioner, load cell and external power supply are  
made, connect a multimeter to the output terminals. Do not forget that the load cell must be  
free of load.  
If the multimeter does not read 0 Vdc or 4 mA, then adjust the trimmer PT1, located on the  
"MP" input board.  
Check that the high level of the output signal does not change. If it does adjust the GAIN  
trimmer (P2) located on the "ME" input module ( see Fig. 7).  
8
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WIRING  
+
CONNECTIONS  
6-WIRE  
BRIDGE  
350 Ω  
-
+
-
+10 Vdc  
FIG.9  
1
3
4
5
6
H i  
1
2
3
4
5
6
TARE ADJUST  
When internal tare  
adjust (on the "ME"  
input board ) is not  
used, the signal  
conditionerterminals  
3 and 4, must not be  
connected.  
INPUT  
/
ENTRADA  
POWER  
SUPPLY  
POWER SUPPLY  
AC  
VOLTAGE  
OUTPUTS  
SALIDAS  
The side label,  
shows the type  
and value of the  
OUTPUTS  
mA  
/
SALIDAS  
Vdc  
power supply.  
Lo  
7
+
-
+
-
POWER SUPPLY  
FUENTE ALIMENTACION  
9
10 11 12  
SIGNALOUTPUT  
Current  
SIGNALOUTPUT  
Voltage  
+
FIG.10  
350 Ω  
-
+
4-WIRE  
BRIDGE  
-
-
+10 Vdc  
1
1
2
3
4
5
6
3
4
5
6
POWER  
SUPPLY  
H i  
POWER SUPPLY  
The side label, shows  
the type and value of  
AC  
VOLTAGE  
INPUT ENTRADA  
/
OUTPUTS  
SALIDAS  
the power supply.  
OUTPUTS  
mA  
/
SALIDAS  
Vdc  
POWER SUPPLY  
FUENTE ALIMENTACION  
Lo  
7
+
-
+
-
9
10 11 12  
SIGNALOUTPUT  
Current  
SIGNALOUTPUT  
Voltage  
9
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MECHANICAL  
DIMENSIONS  
1
3
4
5
6
H i  
INPUT  
/
ENTRADA  
75 mm  
(2.952")  
36 mm  
(1.417")  
OUTPUTS  
mA  
/
SALIDAS  
Vdc  
Lo  
7
+
9
-
+
-
10 11 12  
45 mm  
(1.771")  
110 mm  
(4.33")  
TECHNICAL DATA  
WEIGHT . . . . . . . . . . . . . . . . . . . 270 g.  
HOUSING BASE . . . . . . . . . . . . Polycarbonate, RAL 7032, UL 94 V-1 light grey, IP-40  
TERMINAL HOUSING, COVER  
AND BLIND PLUGS . . . . . . . . . . Polycarbonate, UL 94 V-2 dark grey, IP-20  
2
WIRE CROSS SECTION : . . . . . 4 mm  
Provided with a snap fastener for attaching to DIN 46277 and DIN EN 50022 (35 x 7.5 mm)  
assembly rails.  
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NOTES  
11  
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M ADE  
IN  
USA  
WARRANTY/DIS CLAIMER  
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in m aterials and  
workm anship for a period of 1 3 m o n t h s from date of purchase. OMEGA Warranty adds an  
additional one (1) m onth grace period to the norm al o n e (1 ) ye a r p ro d u c t w a rra n t y to  
co ve r h a n d lin g a n d s h ip p in g tim e . Th is e n s u re s th a t OMEGA’s cu s to m e rs re ce ive  
m axim um coverage on each product.  
If the unit should m alfunction, it m ust be returned to the factory for evaluation. OMEGAs  
Custom er Service Departm ent will issue an Authorized Return (AR) num ber im m ediately  
upon phone or written request. Upon exam ination by OMEGA, if the unit is found to be  
defective it will be repaired or replaced at no charge. OMEGAs WARRANTY does not apply  
to d e fe cts re s u ltin g fro m a n y a ctio n o f th e p u rch a s e r, in clu d in g b u t n o t lim ite d to  
m ishandling, im proper interfacing, operation outside of design lim its, im proper repair, or  
unauthorized m odification. This WARRANTY is VOID if the unit shows evidence of having  
been tam pered with or shows evidence of being dam aged as a result of excessive corrosion;  
or current, heat, m oisture or vibration; im proper specification; m isapplication; m isuse or  
other operating conditions outside of OMEGAs control. Com ponents which wear are not  
warranted, including but not lim ited to contact points, fuses, and triacs.  
OMEGA is pleased to offer suggestions on the use of its various products. How ever,  
OMEGA n e it h e r a s s u m e s re s p o n s ib ilit y fo r a n y o m is s io n s o r e rro rs n o r a s s u m e s  
liability for any dam ages that result from the use of its products in accordance w ith  
inform ation provided by OMEGA, either verbal or w ritten. OMEGA w arrants only that  
the parts m anufactured by it w ill be as specified and free of defects. OMEGA MAKES  
NO OTHER WARRANTIES OR REP RES ENTATIONS OF ANY KIND WHATS OEVER,  
EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES  
IN C LU D IN G A N Y WA RRA N TY O F M ERC HA N TA BILITY A N D FITN ES S FO R  
A
PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The  
rem edies of purchaser set forth herein are exclusive and the total liability of OMEGA  
w it h re s p e c t t o t h is o rd e r, w h e t h e r b a s e d o n c o n t ra c t , w a rra n t y, n e g lig e n c e ,  
indem nification, strict liability or otherw ise, shall not exceed the purchase price of the  
c o m p o n e n t u p o n w h ic h lia b ilit y is b a s e d . In n o e ve n t s h a ll OMEGA b e lia b le fo r  
consequential, incidental or special dam ages.  
CONDITIONS: Equipm ent sold by OMEGA is not intended to be used, nor shall it be used: (1)  
as  
a
Basic Com ponent” under 10 CFR 21 (NRC), used in or with any nuclear installation or  
activity; or (2) in m edical applications or used on hum ans. Should any Product(s) be used in  
or with any nuclear installation or activity, m edical application, used on hum ans, or m isused  
in any way, OMEGA assum es no responsibility as set forth in our basic WARRANTY/  
DISCLAIMER language, and additionally, purchaser will indem nify OMEGA and hold OMEGA  
harm less from any liability or dam age whatsoever arising out of the use of the Product(s) in  
such a m anner.  
RETURN REQUES TS / INQUIRIES  
Dire ct a ll w a rra n ty a n d re p a ir re q u e s ts /in q u irie s to th e OMEGA Cu s to m e r S e rvice  
Departm ent. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST  
OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE  
DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR num ber  
should then be m arked on the outside of the return package and on any correspondence.  
The purchaser is responsible for shipping charges, freight, insurance and proper packaging  
to prevent breakage in transit.  
FOR WARRANTY RETURNS, please have  
the following inform ation available BEFORE  
contacting OMEGA:  
1. P.O. num ber under which the product  
was PURCHASED,  
2. Model and serial num ber of the product  
under warranty, and  
FOR NON-WARRANTY REPAIRS, consult  
OMEGA for current repair charges. Have  
the following inform ation available  
BEFORE contacting OMEGA:  
1. P.O. num ber to cover the COST  
of the repair,  
2. Model and serial num ber of product, and  
3. Repair instructions and/or specific  
problem s relative to the product.  
3. Repair instructions and/or specific  
problem s relative to the product.  
OMEGA’s policy is to m ake running changes, not m odel changes, whenever an im provem ent is possible.  
This affords our custom ers the latest in technology and engineering.  
OMEGA is  
a
registered tradem ark of OMEGA ENGINEERING, INC.  
©
Co p yrig h t 1996 OMEGA ENGINEERING, INC. All rig h ts re s e rve d . Th is d o cu m e n t m a y n o t b e co p ie d ,  
photocopied, reproduced, translated, or reduced to any electronic m edium or m achine-readable form , in whole or  
in part, without prior written consent of OMEGA ENGINEERING, INC.  
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Where Do I Find Everything I Need for  
Process Mea surem ent a nd Control?  
OMEGA…Of Course!  
TEMPERATURE  
ߜ
 
Thermocouple, RTD & Thermistor Probes,  
Connectors, Panels & Assemblies  
Wire: Thermocouple, RTD & Thermistor  
Calibrators & Ice Point References  
Recorders, Controllers & Process Monitors  
Infrared Pyrometers  
ߜ
 
ߜ
 
ߜ
 
ߜ
 
PRESSURE, STRAIN AND FO RCE  
ߜ
 
ߜ
 
ߜ
 
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Transducers & Strain Gauges  
Load Cells & Pressure Gauges  
Displacement Transducers  
Instrumentation & Accessories  
FLO W / LEVEL  
ߜ
 
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ߜ
 
ߜ
 
Rotameters, Gas Mass Flowmeters & Flow Computers  
Air Velocity Indicators  
Turbine/ Paddlewheel Systems  
Totalizers & Batch Controllers  
p H/ CO NDUCTIVITY  
ߜ
 
ߜ
 
ߜ
 
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pH Electrodes, Testers & Accessories  
Benchtop/ Laboratory Meters  
Controllers, Calibrators, Simulators & Pumps  
Industrial pH & Conductivity Equipment  
DATA ACQ UISITIO N  
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Data Acquisition & Engineering Software  
Communications-Based Acquisition Systems  
Plug-in Cards for Apple, IBM & Compatibles  
Datalogging Systems  
Recorders, Printers & Plotters  
HEATERS  
ߜ
 
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ߜ
 
ߜ
 
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Heating Cable  
Cartridge & Strip Heaters  
Immersion & Band Heaters  
Flexible Heaters  
Laboratory Heaters  
ENVIRO NMENTAL  
MO NITO RING AND CO NTRO L  
ߜ
 
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ߜ
 
ߜ
 
Metering & Control Instrumentation  
Refractometers  
Pumps & Tubing  
Air, Soil & Water Monitors  
Industrial Water & Wastewater Treatment  
pH, Conductivity & Dissolved Oxygen Instruments  
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