Omega CCT-20, CCT-90, CCT-95 Owner Manual

User’s Guide

®

http://www.omega.com e-mail: [email protected]

CCT-20, CCT-90, CCT-95

RTD, Potentiometer and Resistance

Signal Conditioners

M2217/1201

TM

OMEGA ®

OMEGAnet

SM

On-Line Service http://www.omega.com

Internet e-mail [email protected]

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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-20, Electrical Features (Specifications) . . . . 7

Signal Input Range Selection . . . . . . . . . . . . . 8

Adjustment and Calibration Procedure . . . . . . 8


Signal Input Range Selection . . . . . . . . . . . . 10

Adjustment and Calibration Procedure . . . . . 10

CCT-95, Electrical Features (Specifications) . . . 11



Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Mechanical Specifications . . . . . . . . . . . . . . . . . . 14

Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2

NOTES

15

MECHANICAL

DIMENSIONS

36 mm

(1.417")

75 mm

(2.952")

1

H i

3 4 5 6

INPUT / ENTRADA

Lo

7

OUTPUTS / SALIDAS

mA Vdc

+ + -

9 10 11 12

110 mm

(4.33")

45 mm

(1.771")

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

WIRE CROSS SECTION : . . . . . 4 mm 2

Provided with a snap fastener for attaching to DIN 46277 and DIN EN 50022 (35 x 7.5 mm) assembly rails.

14

C

OPEN THE HOUSING

PROCEDURE

1. Insert a screwdriver or similar tool in the points marked c

.

2. Turn the screwdriver until the case walls begin to separate towards two side lugs e

, are free.

A

and

B

, so the

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.

A d c e c d e

See the sketch below for the disassembly of the circuit boards.

4. Before reinserting the Signal Conditioner body into the case, the following must be checked :

FIG.1

-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

B

INTERNAL OVERVIEW

A. "ME" Input module.

B. "MS" Output module.

C. "MA" Power supply module.

D. "MP" Input Board.

FIG.2

a

A

C

MP

Input board

D

B a

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.

ME Input module b

3

MS Output module

POWER SUPPLY

RECOMENDED 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.

Power supply

1

H i

3 4 5 6

INPUT / ENTRADA

Lo

7

FIG.3


mA Vdc

+ + -

9 10 11 12

Fuse Switch

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

FIG.3

Fuse value

PROTECTIONS

See on table 1 the recommended value of the fuse for the different power supply availables.

230 Vac

115 Vac

48 Vac

24 Vac

24 Vdc

50 mA

100 mA

150 mA

300 mA

300 mA

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.

4

3-wire sensor

RTD (Pt100)

CONNECTIONS

CCT-20

2-wire sensor

RTD (Pt100)

FIG.10

FIG.11

POWER SUPPLY

The side label, shows the type and value of the power supply.

1

H i

Lo

7

3 4 5 6

INPUT / ENTRADA


mA Vdc

+ + -

9 10 11 12

POWER SUPPLY


1

H i

Lo

7

3 4 5 6

INPUT / ENTRADA


mA Vdc

+ + -

9 10 11 12

The automatic compensation of the wires resistance is deactivated

SIGNAL OUTPUT

Current

SIGNAL OUTPUT

Voltage

SIGNAL OUTPUT

Current

SIGNAL OUTPUT

Voltage

CCT-90

Potentiometer

CCT-95

Resistance

POWER SUPPLY


1

H i

Lo

7

3 4 5 6

INPUT / ENTRADA


mA Vdc

+ + -

9 10 11 12

FIG.12

POWER SUPPLY


1

H i

Lo

7

3 4 5 6

INPUT / ENTRADA


mA Vdc

+ + -

9 10 11 12

FIG.13

SIGNAL OUTPUT

Current

SIGNAL OUTPUT

Voltage

13

SIGNAL OUTPUT

Current

SIGNAL OUTPUT

Voltage

SIGNAL INPUT RANGE SELECTION

Set the jumper to the position indicated in Table 7 for each range. The jumpers are located on the "MP" input board. See Fig. 9.

If the signal input range is modified, follow the adjustment and calibration procedure.

TABLE 7

FIG.9

7 6

5

Input range

0 to 200

Ω

0 to 2 K

Ω

0 to 20 K

Ω

0 to 200 K

Ω

Close jumper

5

6

7

------

Input board components view.

ADJUSTMENT AND CALIBRATION PROCEDURE

A decade box is required as an input signal source

1. When input and output signal values are determined, remove the conditioner case. (Fig. 2).

2. Check on the "MA" module, if the selected power supply is correct. (Table 1).

3. Select on the input board the desired resistance range, according to Table 7, using jumpers "5", "6" and "7". ( Fig. 9).

Caution : Do not confuse with the jumpers on the "ME" module, all those must be opened.

Select on the "MS" output module the desired output (voltage or current), using jumpers

"E" and "F". (Fig. 6).

4. Connect the decade box to the conditioner terminals 4 - 5.

5. Connect a digital multimeter, to the signal output terminals to be used.

6. Power up the conditioner with the appropriate power supply.

7. Adjust the decade box until it generates the low signal level.

8. Turn the "ZERO" trimmer (P1), located on the "ME" input module, until the multimeter shows the desired low level signal output. (For example: 0 Vdc).

9. Adjust the decade box until it generates the high signal level.

10. Turn the "GAIN" trimmer (P2), located on the "ME" input module, until the multimeter shows the desired high level signal output. (For example: 10 Vdc).

11. Repeat steps 7 to 10, until the two values are correct.

12

SIGNAL OUTPUT module MS

The signal conditioner provides two different analog output signals, both proportional to the signal input.

Output in Current: 4 to 20 mA, terminals 9 - 10

Output in Voltage: 0 to 10 Vdc, terminals 11 - 12

Do not use both outputs simultaneously. Only one selection can be made.

The side label shows which one is selected.

1

H i

3 4 5 6

INPUT / ENTRADA

Lo

7


mA Vdc

+ + -

9 10 11 12

CHANGING THE SIGNAL OUTPUT FIG.5

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

VOLTAGES

TABLE 2

NON STANDARD OUTPUT

CURRENTS

TABLE 3

Output Value in K

Ω for : in V.

R29 R30 R31 R32

Output Value in

Ω for : in mA.

R18 R24 R25

±10 49.9

0 to 1 -----

0 to 5 -----

1 to 5 -----

E

-----

-----

-----

100

F

200

11

----

100

0 to 5

0 to 10

-----

-----

100

49.9

-----

-----

100 100 1 to 5 100 K 124

66.5

100 0 to 20 -----

"-----" means "Resistor must not be installed"

-------

Jumpers E and F : Closed only if the output is 4 to 20 mA.

-----

24.9

R18

Replace or add the indicated resistors with the values shown in Tables 2 and 3 for the desired output.

R29

R30 FIG.6

R24 R25 R31 R32

5

SIGNAL INPUT, module ME

OVERVIEW

This module together with the "MP" input board, performs all the input 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.

See the wiring instructions in the Connections Section for more details.

FIG.7

P1

A

B

1

2

P2

C

Solder pads on solder side

P1

: Output zero adjustment.

P2

: Gain amplifier adjustment.

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 : Gain at maximum level

Jumper C if closed : Gain at medium level.

Jumpers B and C opened : Gain at minimum level.

CCT-95, ELECTRICAL FEATURES

INPUT

Table 6 indicates all the standard available ranges for CCT-95 and its electrical specifications. The position of the jumpers are given in Fig. 8.

This model uses a 2-wire measurement technique and therefore, it does not compensate for errors due to the lead resistance.

The maximum input resistance allowed is 1 M Ω .

For different signal ranges, contact the engineering department for more instructions.

The open circuit burnout protection is >20 mA up-scale.

TABLE 6

Reference

Input range

Min. input Span *

A

0 to 200

Ω

B

0 to 2 K

Ω

10 % of full range selected

C D

0 to 20 K

Ω

0 to 200 K

Ω

* The Minimum Input Span is the minimum difference between the maximum and minimum input signal for a full scale output (4 to 20 mA or 0 to 10 Vdc).

OUTPUT

0 to 20 mA or 4 to 20 mA

0 to 10 Vdc

ACCURACY

RESPONSE TIME

GALVANIC ISOLATION

R

R

≤

L

< 600

Ω

max. 22 mA ±3%

L

> 1000

Ω

max. 11 V ±3%

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

STORAGE TEMPERATURE

OPERATING TEMPERATURE

TEMPERATURE COEFFICIENT

STANDARD POWER SUPPLY

POWER CONSUMPTION

TEST VOLTAGE

≤

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

4 kVeff. 50 Hz/1m.

11

6


For this model it is not necessary to change or set any jumpers position.

To change the signal input range, follow the adjustment and calibration procedure.


A potentiometer is recommended as an input signal source



3. Check that the jumpers "A", "B" and "C" located in the "ME" input module are opened.


"E" and "F". (Fig. 6).

4. Connect the potentiometer to the conditioner input terminals 3 - 4 - 5.

The slide terminal of the potentiometer must be connected to terminal 4.



7. Turn the potentiometer slide to one end, until a low level signal input is achieved.


9. Turn the potentiometer slide to the other end, until a high level signal input is achieved.



10


INPUT

Table 4 indicates all the standard available ranges for the CCT-20 using RTD sensors

(Pt100, 100 Ω at 0°C) in accordance with DIN 43760. The position of the jumpers are indicated in Table 5.

The CCT-20 uses the 3-wire measurement, which compensates for lead wire resistance.

However 2-wire sensors can be used too. See wiring connections.

The signal conditioner also has circuitry to linearize the sensor signal. The signal output is proportional to the measured temperature in °C.

The maximum excitation current is 1 mA.

For different signal ranges, contact the engineering department.

TABLE 4

Reference

RANGE °C

Min. input Span*

A

0 to 100

B

0 to 200

C

0 to 300

50°C

D

0 to 400

E

0 to 500

F

0 to 600

* The Minimum Input Span is the minimum difference between the maximum and minimum input signal for a full scale output (4 to 20 mA or 0 to 10 Vdc) .

OUTPUT


0 to 10 Vdc

ACCURACY

RESPONSE TIME

GALVANIC ISOLATION

R

R

≤

L

< 600

Ω

max. 22 mA ±3%

L

> 1000

Ω

max. 11 V ±3%

0.2 % FS

≤

250 mS


.

50 Hz/1 m.


RIPPLE

BAND PASS

STORAGE TEMPERATURE




POWER CONSUMPTION

TEST VOLTAGE

≤

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

4 kVeff. 50 Hz/1m.

7


Set the jumpers to the position indicated in Table 5, for each range. The jumpers are located on the "ME" input module. See Fig. 8.


"ME" Input module, components view.

CLOSE

JUMPER

RANGE

°C

0 to 100

0 to 200

0 to 300

0 to 400

0 to 500

0 to 600

B

C

C both opened both opened both opened

A B C

TABLE 5

FIG.8

JUMPERS SELECTION


A decade box is recommended as an input signal source.



3. Select on the "ME" input board the desired temperature range, using jumpers "B" and "C" as indicated in Table 5.

Select the desired output on "MS" output module (voltage or current), using jumpers

"E" and "F". (Fig. 6).

4. Connect the decade box or calibrator to the correct converter terminals.

5. Connect digital multimeter, to the signal output terminals to be used.

6. Power up the signal conditioner with the appropriate power supply.

7. Adjust the decade box until it generates the low signal level. (For example: 0°C)


9. Adjust the decade box until it generates the high signal level. (For example: 100°C).



SENSOR BREAK DETECTION

For open circuit protection, the signal output goes down scale (<4 mA).

8


INPUT

The CCT-90 works with potentiometers or resistance based transducers.

It may be used potentiometers with a resistance value between 100 Ω minimum and 1 M Ω maximum.

To adjust the output signal to the input resistance, see the Adjustment and Calibration

Procedure paragraph on the following page.

OUTPUT


0 to 10 Vdc

ACCURACY

RESPONSE TIME

GALVANIC ISOLATION

R

R

≤

L

< 600

Ω

max. 22 mA ±3%

L

> 1000

Ω

max. 11 V ±3%

0.2 % FS

≤

250 mS


.

50 Hz/1 m.


RIPPLE

BAND PASS

STORAGE TEMPERATURE




POWER CONSUMPTION

TEST VOLTAGE

≤

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

4 kVeff. 50 Hz/1m.

9


Set the jumpers to the position indicated in Table 5, for each range. The jumpers are located on the "ME" input module. See Fig. 8.


"ME" Input module, components view.

CLOSE

JUMPER

RANGE

°C

0 to 100

0 to 200

0 to 300

0 to 400

0 to 500

0 to 600

B

C

C both opened both opened both opened

A B C

TABLE 5

FIG.8

JUMPERS SELECTION


A decade box is recommended as an input signal source.



3. Select on the "ME" input board the desired temperature range, using jumpers "B" and "C" as indicated in Table 5.

Select the desired output on "MS" output module (voltage or current), using jumpers

"E" and "F". (Fig. 6).

4. Connect the decade box or calibrator to the correct converter terminals.

5. Connect digital multimeter, to the signal output terminals to be used.

6. Power up the signal conditioner with the appropriate power supply.

7. Adjust the decade box until it generates the low signal level. (For example: 0°C)


9. Adjust the decade box until it generates the high signal level. (For example: 100°C).



SENSOR BREAK DETECTION

For open circuit protection, the signal output goes down scale (<4 mA).

8


INPUT

The CCT-90 works with potentiometers or resistance based transducers.

It may be used potentiometers with a resistance value between 100 Ω minimum and 1 M Ω maximum.

To adjust the output signal to the input resistance, see the Adjustment and Calibration

Procedure paragraph on the following page.

OUTPUT


0 to 10 Vdc

ACCURACY

RESPONSE TIME

GALVANIC ISOLATION

R

R

≤

L

< 600

Ω

max. 22 mA ±3%

L

> 1000

Ω

max. 11 V ±3%

0.2 % FS

≤

250 mS


.

50 Hz/1 m.


RIPPLE

BAND PASS

STORAGE TEMPERATURE




POWER CONSUMPTION

TEST VOLTAGE

≤

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

4 kVeff. 50 Hz/1m.

9


For this model it is not necessary to change or set any jumpers position.

To change the signal input range, follow the adjustment and calibration procedure.


A potentiometer is recommended as an input signal source



3. Check that the jumpers "A", "B" and "C" located in the "ME" input module are opened.


"E" and "F". (Fig. 6).

4. Connect the potentiometer to the conditioner input terminals 3 - 4 - 5.

The slide terminal of the potentiometer must be connected to terminal 4.



7. Turn the potentiometer slide to one end, until a low level signal input is achieved.


9. Turn the potentiometer slide to the other end, until a high level signal input is achieved.



10


INPUT

Table 4 indicates all the standard available ranges for the CCT-20 using RTD sensors

(Pt100, 100 Ω at 0°C) in accordance with DIN 43760. The position of the jumpers are indicated in Table 5.

The CCT-20 uses the 3-wire measurement, which compensates for lead wire resistance.

However 2-wire sensors can be used too. See wiring connections.

The signal conditioner also has circuitry to linearize the sensor signal. The signal output is proportional to the measured temperature in °C.

The maximum excitation current is 1 mA.

For different signal ranges, contact the engineering department.

TABLE 4

Reference

RANGE °C

Min. input Span*

A

0 to 100

B

0 to 200

C

0 to 300

50°C

D

0 to 400

E

0 to 500

F

0 to 600

* The Minimum Input Span is the minimum difference between the maximum and minimum input signal for a full scale output (4 to 20 mA or 0 to 10 Vdc) .

OUTPUT


0 to 10 Vdc

ACCURACY

RESPONSE TIME

GALVANIC ISOLATION

R

R

≤

L

< 600

Ω

max. 22 mA ±3%

L

> 1000

Ω

max. 11 V ±3%

0.2 % FS

≤

250 mS


.

50 Hz/1 m.


RIPPLE

BAND PASS

STORAGE TEMPERATURE




POWER CONSUMPTION

TEST VOLTAGE

≤

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

4 kVeff. 50 Hz/1m.

7

SIGNAL INPUT, module ME

OVERVIEW

This module together with the "MP" input board, performs all the input 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.

See the wiring instructions in the Connections Section for more details.

FIG.7

P1

A

B

1

2

P2

C

Solder pads on solder side

P1

: Output zero adjustment.

P2

: Gain amplifier adjustment.

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 : Gain at maximum level

Jumper C if closed : Gain at medium level.

Jumpers B and C opened : Gain at minimum level.


INPUT

Table 6 indicates all the standard available ranges for CCT-95 and its electrical specifications. The position of the jumpers are given in Fig. 8.

This model uses a 2-wire measurement technique and therefore, it does not compensate for errors due to the lead resistance.

The maximum input resistance allowed is 1 M Ω .

For different signal ranges, contact the engineering department for more instructions.

The open circuit burnout protection is >20 mA up-scale.

TABLE 6

Reference

Input range

Min. input Span *

A

0 to 200

Ω

B

0 to 2 K

Ω

10 % of full range selected

C D

0 to 20 K

Ω

0 to 200 K

Ω

* The Minimum Input Span is the minimum difference between the maximum and minimum input signal for a full scale output (4 to 20 mA or 0 to 10 Vdc).

OUTPUT


0 to 10 Vdc

ACCURACY

RESPONSE TIME

GALVANIC ISOLATION

R

R

≤

L

< 600

Ω

max. 22 mA ±3%

L

> 1000

Ω

max. 11 V ±3%

0.2 % FS

≤

250 mS


.

50 Hz/1 m.


RIPPLE

BAND PASS

STORAGE TEMPERATURE




POWER CONSUMPTION

TEST VOLTAGE

≤

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

4 kVeff. 50 Hz/1m.

11

6


Set the jumper to the position indicated in Table 7 for each range. The jumpers are located on the "MP" input board. See Fig. 9.


TABLE 7

FIG.9

7 6

5

Input range

0 to 200

Ω

0 to 2 K

Ω

0 to 20 K

Ω

0 to 200 K

Ω

Close jumper

5

6

7

------

Input board components view.


A decade box is required as an input signal source



3. Select on the input board the desired resistance range, according to Table 7, using jumpers "5", "6" and "7". ( Fig. 9).

Caution : Do not confuse with the jumpers on the "ME" module, all those must be opened.


"E" and "F". (Fig. 6).

4. Connect the decade box to the conditioner terminals 4 - 5.



7. Adjust the decade box until it generates the low signal level.


9. Adjust the decade box until it generates the high signal level.



12

SIGNAL OUTPUT module MS

The signal conditioner provides two different analog output signals, both proportional to the signal input.

Output in Current: 4 to 20 mA, terminals 9 - 10

Output in Voltage: 0 to 10 Vdc, terminals 11 - 12

Do not use both outputs simultaneously. Only one selection can be made.

The side label shows which one is selected.

1

H i

3 4 5 6

INPUT / ENTRADA

Lo

7


mA Vdc

+ + -

9 10 11 12

CHANGING THE SIGNAL OUTPUT FIG.5

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

VOLTAGES

TABLE 2

NON STANDARD OUTPUT

CURRENTS

TABLE 3

Output Value in K

Ω for : in V.

R29 R30 R31 R32

Output Value in

Ω for : in mA.

R18 R24 R25

±10 49.9

0 to 1 -----

0 to 5 -----

1 to 5 -----

E

-----

-----

-----

100

F

200

11

----

100

0 to 5

0 to 10

-----

-----

100

49.9

-----

-----

100 100 1 to 5 100 K 124

66.5

100 0 to 20 -----

"-----" means "Resistor must not be installed"

-------

Jumpers E and F : Closed only if the output is 4 to 20 mA.

-----

24.9

R18

Replace or add the indicated resistors with the values shown in Tables 2 and 3 for the desired output.

R29

R30 FIG.6

R24 R25 R31 R32

5

POWER SUPPLY

RECOMENDED 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.

Power supply

1

H i

3 4 5 6

INPUT / ENTRADA

Lo

7

FIG.3


mA Vdc

+ + -

9 10 11 12

Fuse Switch

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

FIG.3

Fuse value

PROTECTIONS

See on table 1 the recommended value of the fuse for the different power supply availables.

230 Vac

115 Vac

48 Vac

24 Vac

24 Vdc

50 mA

100 mA

150 mA

300 mA

300 mA

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.

4

3-wire sensor

RTD (Pt100)

CONNECTIONS

CCT-20

2-wire sensor

RTD (Pt100)

FIG.10

FIG.11

POWER SUPPLY


1

H i

Lo

7

3 4 5 6

INPUT / ENTRADA


mA Vdc

+ + -

9 10 11 12

POWER SUPPLY


1

H i

Lo

7

3 4 5 6

INPUT / ENTRADA


mA Vdc

+ + -

9 10 11 12

The automatic compensation of the wires resistance is deactivated

SIGNAL OUTPUT

Current

SIGNAL OUTPUT

Voltage

SIGNAL OUTPUT

Current

SIGNAL OUTPUT

Voltage

CCT-90

Potentiometer

CCT-95

Resistance

POWER SUPPLY


1

H i

Lo

7

3 4 5 6

INPUT / ENTRADA


mA Vdc

+ + -

9 10 11 12

FIG.12

POWER SUPPLY


1

H i

Lo

7

3 4 5 6

INPUT / ENTRADA


mA Vdc

+ + -

9 10 11 12

FIG.13

SIGNAL OUTPUT

Current

SIGNAL OUTPUT

Voltage

13

SIGNAL OUTPUT

Current

SIGNAL OUTPUT

Voltage

MECHANICAL

DIMENSIONS

36 mm

(1.417")

75 mm

(2.952")

1

H i

3 4 5 6

INPUT / ENTRADA

Lo

7


mA Vdc

+ + -

9 10 11 12

110 mm

(4.33")

45 mm

(1.771")

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

WIRE CROSS SECTION : . . . . . 4 mm 2

Provided with a snap fastener for attaching to DIN 46277 and DIN EN 50022 (35 x 7.5 mm) assembly rails.

14

C

OPEN THE HOUSING

PROCEDURE

1. Insert a screwdriver or similar tool in the points marked c

.

2. Turn the screwdriver until the case walls begin to separate towards two side lugs e

, are free.

A

and

B

, so the

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.

A d c e c d e

See the sketch below for the disassembly of the circuit boards.

4. Before reinserting the Signal Conditioner body into the case, the following must be checked :

FIG.1

-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

B

INTERNAL OVERVIEW

A. "ME" Input module.

B. "MS" Output module.

C. "MA" Power supply module.

D. "MP" Input Board.

FIG.2

a

A

C

MP

Input board

D

B a

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.

ME Input module b

3

MS Output module

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


Signal Input Range Selection . . . . . . . . . . . . . 8

Adjustment and Calibration Procedure . . . . . . 8




CCT-95, Electrical Features (Specifications) . . . 11



Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Mechanical Specifications . . . . . . . . . . . . . . . . . . 14

Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2

NOTES

15

MADE

IN

U SA

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA Warranty adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product.

If the unit should malfunction, it must be returned to the factory for evaluation. OMEGA’s

Customer Service Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of being damaged as a result of excessive corrosion; or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA’s control. Components which wear are not warranted, including but not limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However,

OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by it will be as specified and free of defects. OMEGA MAKES

NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER,

EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES

INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A

PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are exclusive and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY /

DISCLAIMER language, and additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.

RETURN REQUESTS / INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service

Department. 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 number should then be marked 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 information available BEFORE contacting OMEGA:

1. P.O. number under which the product was PURCHASED,

2. Model and serial number of the product under warranty, and

3. Repair instructions and/or specific problems relative to the product.

FOR NON-WARRANTY REPAIRS, consult

OMEGA for current repair charges. Have the following information available

BEFORE contacting OMEGA:

1. P.O. number to cover the COST of the repair,

2. Model and serial number of product, and

3. Repair instructions and/or specific problems relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible.

This affords our customers the latest in technology and engineering.

OMEGA is a registered trademark of OMEGA ENGINEERING, INC.

© Copyright 1996 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without prior written consent of OMEGA ENGINEERING, INC.

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA…Of Course!

TEMPERATURE

M

Connectors, Panels & Assemblies

U Wire: Thermocouple, RTD & Thermistor

U Calibrators & Ice Point References

U Recorders, Controllers & Process Monitors

M

PRESSURE, STRAIN AND FORCE

U Transducers & Strain Gauges

M

U Displacement Transducers

M

FLOW/LEVEL

U Rotameters, Gas Mass Flowmeters & Flow Computers

M

U Turbine/Paddlewheel Systems

M

pH/CONDUCTIVITY

U pH Electrodes, Testers & Accessories

M

U Controllers, Calibrators, Simulators & Pumps

M

DATA ACQUISITION

U Data Acquisition & Engineering Software

M

U Plug-in Cards for Apple, IBM & Compatibles

M

U Recorders, Printers & Plotters

HEATERS

U Heating Cable

M

U Immersion & Band Heaters

M

U Laboratory Heaters

ENVIRONMENTAL

MONITORING AND CONTROL

U Metering & Control Instrumentation

M

M

M

U Industrial Water & Wastewater Treatment

M

Omega CCT-20, CCT-90, CCT-95 Owner Manual

User’s Guide

http://www.omega.com e-mail: [email protected]

RTD, Potentiometer and Resistance

Signal Conditioners

Servicing North America:

For immediate technical or application assistance:

Servicing Europe:

TABLE OF CONTENTS

POWER SUPPLY

POWER SUPPLY

TABLE OF CONTENTS

WARRANTY/DISCLAIMER

RETURN REQUESTS / INQUIRIES

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA…Of Course!

TEMPERATURE

PRESSURE, STRAIN AND FORCE

FLOW/LEVEL

pH/CONDUCTIVITY

DATA ACQUISITION

HEATERS

ENVIRONMENTAL

MONITORING AND CONTROL

Related manuals

Table of contents

Omega CCT-20, CCT-90, CCT-95 Owner Manual

User’s Guide

http://www.omega.com e-mail: [email protected]

RTD, Potentiometer and Resistance

Signal Conditioners

Servicing North America:

For immediate technical or application assistance:

Servicing Europe:

TABLE OF CONTENTS

POWER SUPPLY

POWER SUPPLY

TABLE OF CONTENTS

WARRANTY/DISCLAIMER

RETURN REQUESTS / INQUIRIES

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA…Of Course!

TEMPERATURE

PRESSURE, STRAIN AND FORCE

FLOW/LEVEL

pH/CONDUCTIVITY

DATA ACQUISITION

HEATERS

ENVIRONMENTAL

MONITORING AND CONTROL

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