red lion ITMA DC Signal Conditioner Product manual

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red lion ITMA DC Signal Conditioner Product manual | Manualzz

Bulletin No. ITMA3-D

Drawing No. LP0405

Released 06/13

Tel +1 (717) 767-6511

Fax +1 (717) 764-0839 www.redlion.net

MODEL ITMA DC - INTELLIGENT THERMOCOUPLE MODULE WITH ANALOG OUTPUT

USER PROGRAMMABLE INPUT

(Thermocouple types J, K, T, & E, or millivolt)

MICROPROCESSOR CONTROLLED

SIMPLE ADJUSTABLE RANGE SETTING (Using Input Signal)

THERMOCOUPLE BREAK DETECTION

MOUNTS ON “T” AND “G” STYLE DIN RAILS

3-WAY ELECTRICAL ISOLATION (POWER/INPUT/OUTPUT)

MULTIPLE ANALOG OUTPUTS (0 to 20 mA, 4 to 20 mA, and 0 to

10 VDC)

WIDE OPERATING TEMPERATURE RANGE (-25°C to 75°C)

POWER & MEMORY ERROR INDICATION

9 to 32 VDC POWERED

DESCRIPTION

The ITMA accepts a thermocouple or millivolt input and converts it into a voltage or current output. The voltage or current output is linearly proportional to the temperature or millivolt input. This output is ideal for interfacing to indicators, chart recorders, controllers, or other instrumentation equipment.

The ITMA is DC powered. The DC power input is isolated from the signal input and analog output. The unit scales the analog output proportionally to the thermocouple or millivolt input signal. The analog output may be configured for one of the following: 0 to 20 mA, 4 to 20 mA, or 0 to 10 VDC. Making the signal conversion with the ITMA to a current output signal, makes the signal less susceptible to noise interference and allows accurate transmission over long distances. The 3-Way isolation allows the use of grounded thermocouples which can provide additional noise reduction benefits.

The ITMA uses a ten position DIP switch to accomplish the input sensor configuration, range selection, and unit calibration. A simple range setting technique (Field Calibration) is used so the actual input signal adjusts the output for scaling. This technique eliminates the need for potentiometers which are vulnerable to changes due to vibration.

The unit is equipped with a universal mounting foot for attachment to standard DIN style mounting rails, including top hat rail (T) according to EN 50

022 - 35 × 7.5 and 35 × 15, and (G) profile according to EN 50 035 - G 32.

DIMENSIONS In inches (mm)

3.12

(79.2)

1.08

(27.5)

MC2220X

MV E

POWER

ITMA

ERROR

SAFETY SUMMARY

All safety related regulations, local codes and instructions that appear in the manual or on equipment must be observed to ensure personal safety and to prevent damage to either the instrument or equipment connected to it. If equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.

CAUTION: Read complete instructions prior to installation and operation of the unit.

SPECIFICATIONS

1. POWER: 9 to 32 VDC; 1.75 W The power supply must have 300 mA for 200 msec. surge capacity.

2. INPUT: J, K, T, E, mV [selectable via DIP switch]

3. OUTPUT: Self-powered (active); All output signals scaled linearly using temperature or mV input. Unit is shipped set for 4 to 20 mA output. 4 to 20 mA or 0 to 20 mA selected via internal jumper.

Voltage Output Compliance:

0 to 10 VDC across min 1 KΩ load (10 mA)

20 mV peak to peak max. ripple (for frequencies up to 120 Hz)

Current Output Compliance:

0 to 20 mA through max. 600Ω load (12 VDC)

4 to 20 mA through max. 600Ω load (12 VDC)

15 mV peak to peak max. ripple across 600Ω load (for freq. up to 120 Hz)

4. TC BREAK DETECTION: Nominal values shown in the following order:

(0 to 20 mA, 4 to 20 mA, and 0 to 10 VDC).

Upscale: 22.9 mA, 22.5 mA, and 11.5 VDC

Downscale: -0.5 mA, 3.5 mA, and -0.4 VDC

5. RESPONSE TIME: 400 msec (to within 99% of final value w/step input; typically, response is limited to response time of probe.)

6. TEMPERATURE EFFECTS:

Temperature Coefficient: ± 0.025% of input range per °C

Ice Point Compensation: ± 0.75°C for a 50°C change in temperature

7. DIELECTRIC WITHSTAND VOLTAGE: 1500 VAC for 1 minute

Working Voltage: 50 VAC

Power input to Signal input, Power input to Signal output, & Signal input to

Signal output.

8. RANGE & ACCURACY: (12 Bit resolution)

Accuracy: ± ( 0.075% Range + 0.25°C [Conformity] + 0.50°C [Ice Point]) at 23°C after 20 min. warm-up, conforming to ITS-90.

Note: TC Conformity and Ice Point do not apply to mV input

1

Relative Humidity: Less than 85% RH (non-condensing)

Span: The input span can be set to a min. of 1/8 of the full scale range, anywhere within that range.

Thermocouple Accuracy for each type and the corresponding ranges:

TC

(INPUT) RANGE

J

K

T

E mV

1

2

3

0

1

2

3

0

3

2

3

0

1

0

1

2

0

1

2

3

DIP SWITCH

TYPE RANGE

6 7 8 9 10

TEMPERATURE

& mV RANGE

0 0 0 0 0 -136 to 111°C

0 0 0 0 1 69 to 575°C

0 0 0 1 0 338 to 800°C

0 0 0 1 1 -149 to 862°C

0 0 1 0 0 -200 to 541°C

0 0 1 0 1 427 to 1132°C

RANGE

ACCURACY

± 0.19°C

± 0.38°C

± 0.35°C

± 0.76°C

± 0.56°C

± 0.53°C

0 0 1 1 0 648 to 1372°C ± 0.54°C

0 0 1 1 1 -192 to 1372°C ± 1.17°C

0 1 0 0 0 -225 to 149°C

0 1 0 0 1 74 to 326°C

0 1 0 1 0 68 to 400°C

0 1 0 1 1 -200 to 400°C

0 1 1 0 0 -111 to 311°C

0 1 1 0 1 276 to 609°C

0 1 1 1 0 377 to 1000°C

± 0.28°C

± 0.19°C

± 0.25°C

±

±

±

±

0.45°C

0.32°C

0.25°C

0.47°C

0 1 1 1 1 -114 to 1000°C ± 0.84°C

1 1 1 0 0 -9 to 6 mV ± 0.0113 mV

1 1 1 0 1 -9 to 22 mV ± 0.0233 mV

1 1 1 1 0 -9 to 63 mV ± 0.0540 mV

1 1 1 1 1 -9 to 77 mV ± 0.0645 mV

WIRE COLOR

ANSI BS1843

White (+)

Red (-)

Yellow (+)

Red (-)

Blue (+)

Red (-)

Violet (+)

Red (-)

N/A

Yellow (+)

Blue (-)

Brown (+)

Blue (-)

White (+)

Blue (-)

Brown (+)

Blue (-)

N/A

Note: DIP switch settings

Accuracy Example:

Type “J” Range “0”

-136°C to 111°C

Range

( ±0.19°C +

ON = 1 OFF = 0

Conformity

±0.25°C

Ice Point

+ ±0.50°C ) =

Total Error

±0.94°C

9. ENVIRONMENTAL CONDITIONS:

Operating Temperature Range: -25°C to 75°C (-13°F to 167°F)

Storage Temperature Range: -40 to 85°C (-40°F to 185°F)

Operating and Storage Humidity: 85% max. relative humidity (noncondensing) from -25°C to 75°C.

Vibration to IEC 68-2-6: Operational 5-150 Hz, 2 g

Shock to IEC 68-2-27: Operational 30 g

Altitude: Up to 2000 meters

10. MOUNTING: Universal mounting foot for attachment to standard DIN style mounting rails, including top hat (T) profile rail according to EN50022

-35 × 7.5 and -35 × 15, and G profile rail according to EN50035 - G32.

11. CONNECTION: Compression type terminal block

12. CONSTRUCTION: High impact black plastic case

13. CERTIFICATIONS AND COMPLIANCES:

CE Approved

EN 61326-1 Immunity to Industrial Locations

Emission CISPR 11 Class B

IEC/EN 61010-1

RoHS Compliant

Refer to the EMC Installation Guidelines section of this bulletin for additional information.

14. WEIGHT: 4.02 oz. (114.0 g)

BLOCK DIAGRAM

3V

7

TC

-

+

8

DC

POWER

10

12

22M

A/D

CONVERTER

1.7V

PROCESS

CIRCUITRY

POWER

SUPPLY

22V

4V

3V

1.7V

PWM

CONTROL

CIRCUITRY

ANALOG

OUTPUT

CIRCUITRY

1

3

+

-

4

6

+

-

CURRENT

OUTPUT

VOLTAGE

OUTPUT

FUNCTION DESCRIPTIONS

Open Sensor Detection

The output can be set to go Upscale or Downscale for the detection of an open sensor. The nominal values for each output range are listed under TC

Break Detection in the Specifications section. This setting is always active, so changes to the setting are effective immediately.

Ice Point Compensation

The Ice Point Compensation for the thermocouple sensors can be enabled (DIP

Switch OFF) or disabled (DIP Switch ON). The mV sensor input is not affected by this setting. Generally, the Ice Point Compensation is always enabled.

Unit Malfunction

If the unit has scaling problems (output remains at -0.5 mA, 3.5 mA, or -0.5

VDC nominal), check the ERROR LED on the front of the unit. An E 2 PROM problem is indicated when the ERROR LED is on. If the ERROR LED is on, perform a Basic Calibration followed by a Field Calibration. Turn the power off for 5 seconds. Turn power on and check if the ERROR LED is on. If the LED is on, contact the factory.

EMC INSTALLATION GUIDELINES

Although Red Lion Controls Products are designed with a high degree of immunity to Electromagnetic Interference (EMI), proper installation and wiring methods must be followed to ensure compatibility in each application. The type of the electrical noise, source or coupling method into a unit may be different for various installations. Cable length, routing, and shield termination are very important and can mean the difference between a successful or troublesome installation. Listed are some EMI guidelines for a successful installation in an industrial environment.

1. A unit should be mounted in a metal enclosure, which is properly connected to protective earth.

2. Use shielded cables for all Signal and Control inputs. The shield connection should be made as short as possible. The connection point for the shield depends somewhat upon the application. Listed below are the recommended methods of connecting the shield, in order of their effectiveness.

a. Connect the shield to earth ground (protective earth) at one end where the unit is mounted.

b. Connect the shield to earth ground at both ends of the cable, usually when the noise source frequency is over 1 MHz.

3. Never run Signal or Control cables in the same conduit or raceway with AC power lines, conductors, feeding motors, solenoids, SCR controls, and heaters, etc. The cables should be run through metal conduit that is properly grounded. This is especially useful in applications where cable runs are long and portable two-way radios are used in close proximity or if the installation is near a commercial radio transmitter. Also, Signal or Control cables within an enclosure should be routed as far away as possible from contactors, control relays, transformers, and other noisy components.

4. Long cable runs are more susceptible to EMI pickup than short cable runs.

5. In extremely high EMI environments, the use of external EMI suppression devices such as Ferrite Suppression Cores for signal and control cables is effective. The following EMI suppression devices (or equivalent) are recommended:

Fair-Rite part number 0443167251 (RLC part number FCOR0000)

Line Filters for input power cables:

Schaffner # FN2010-1/07 (Red Lion Controls # LFIL0000)

6. To protect relay contacts that control inductive loads and to minimize radiated and conducted noise (EMI), some type of contact protection network is normally installed across the load, the contacts or both. The most effective location is across the load.

a. Using a snubber, which is a resistor-capacitor (RC) network or metal oxide varistor (MOV) across an AC inductive load is very effective at reducing

EMI and increasing relay contact life.

b. If a DC inductive load (such as a DC relay coil) is controlled by a transistor switch, care must be taken not to exceed the breakdown voltage of the transistor when the load is switched. One of the most effective ways is to place a diode across the inductive load. Most RLC products with solid state outputs have internal zener diode protection. However external diode protection at the load is always a good design practice to limit EMI.

Although the use of a snubber or varistor could be used.

RLC part numbers: Snubber: SNUB0000

Varistor: ILS11500 or ILS23000

7. Care should be taken when connecting input and output devices to the instrument. When a separate input and output common is provided, they should not be mixed. Therefore a sensor common should NOT be connected to an output common. This would cause EMI on the sensitive input common, which could affect the instrument’s operation.

Visit RLC’s web site at http://www.redlion.net/Support/InstallationConsiderations.

html for more information on EMI guidelines, Safety and CE issues as they relate to Red Lion Controls products.

2

WIRING CONNECTIONS

All conductors should meet voltage and current ratings for each terminal. Also, cabling should conform to appropriate standards of good installation, local codes and regulations. It is recommended that power supplied to the unit be protected by a fuse or circuit breaker. When wiring the unit, use the numbers on the label to identify the position number with the proper function. Strip the wire, leaving approximately 1/4" (6 mm) of bare wire exposed (stranded wire should be tinned with solder). Insert the wire into the terminal, and tighten the screw until the wire is clamped tightly.

+

-

MONITORING INSTRUMENT

VOLTAGE METER

OR

CURRENT METER

I+

V+

TC-

TC+

VDC+

1

4

2

5

7

10

POWER

ERROR

8 9

11 12

3

6

I-

V-

VDC-

POWER SUPPLY

9 to 32 VDC

INPUT, OUTPUT, AND POWER CONNECTIONS

INPUT

Ensure thermocouple wire ends are stripped and clean. Connect positive thermocouple lead to terminal #7 (TC+). Connect negative thermocouple lead to terminal #8 (TC-). If the thermocouple probe cannot be connected directly to the module, thermocouple wire or thermocouple extension-grade wire must be used to extend the connection (copper wire does not work). Always refer to the thermocouple manufacturer’s recommendations for: mounting, temperature range, shielding, etc.

Remove this side of the unit case.

WIRE JUMPER

OUTPUT

Connect the output signal wires to the desired output terminals. For voltage output, use terminals #4 and #6; for current output, use terminals #1 and #3 observing proper polarity. Only one output may be used at a time. The unit is factory set for a 4 to 20 mA output. The voltage output will track the current output nominally within a ±2.5% deviation range.

To select 0 to 20 mA, output you must open the case and cut the wire jumper.

The jumper is located to the left side of the board as shown in the drawing.

POWER

Connect DC power to terminals #10 and #12 observing proper polarity. Be certain DC power is within the 9 to 32 VDC specifications.

POWER LED

The ITMA has a green LED located on the front to indicate that power is applied to the unit.

DIP SWITCH SETTING DESCRIPTIONS

SWITCH

1

2

3

LABEL DESCRIPTION

OUTPUT CAL Output Calibration

FIELD CAL Field Calibration

BASIC CAL Basic Calibration

4

5

6

9

10

7

8

TC Type and Range switch settings (ON = 1 OFF = 0)

TC

TYPE

J

K

T

E mV

0

0

1

0

0

6

DIP SWITCH

7 8

0

0

0

1

1

1

1

0

1

1

RANGE

0

1

2

3

DIP SWITCH

9 10

0 0

0

1

1

1

0

1

FACTORY SETTINGS

The unit is shipped from the factory calibrated for a 4 to 20 mA output using a type J thermocouple in range 3. The ITMA should be Field calibrated by the operator for the application environment it will be used in. If the unit is not recalibrated by the operator, the following table lists the temperature ranges for the given thermocouple types.

NOMINAL FACTORY FIELD CALIBRATION

TYPE

J

K

T

E

RANGE

3

3

3

3

TEMPERATURE RANGE

-50°C to 500°C

-85°C to 790°C

-195°C to 162°C

3°C to 602°C

TROUBLESHOOTING

For further technical assistance, contact technical support at the appropriate company numbers listed.

3

CALIBRATION PROCEDURES

1.0 Field Calibration

THERMOCOUPLE

CALIBRATOR

-

+

I+

V+

TC+

VDC+

4

1 2

5

POWER

ERROR

7 8 9

3

6

10 11 12

9-32 VDC

I-

V-

TC-

VDC-

5

4

3

2

1

10

9

8

7

6

I+

V+

TC-

TC+

VDC+

VOLTAGE METER

OR

CURRENT METER

4

7

1

POWER

ERROR

10

POWER SUPPLY

9 to 32 VDC

RANGE

RANGE

TYPE

TC

TC TYPE

OPEN SEN DN

ICE PT DIS/EN

BASIC CAL

FIELD CAL

OUTPUT CAL

DIP SWITCH SETTINGS:

ON = 1 OFF = 0

2

5

8

11

Field Calibration Wiring

MODEL ITMA

3

6

9

12

I-

V-

VDC-

Note: The nominal output value for the various output ranges are designated in the following order: (0 to 20 mA, 4 to 20 mA, 0 to 10 VDC)

Allow a 30 minute warm-up period before starting Field Calibration. Field Calibration scales the voltage or current output to a temperature or mV input. This procedure assigns an input value to analog output low and an input value to analog output high. The microprocessor handles configuring the output so it is linear to the temperature or mV input.

The Field Calibration procedure is described below.

1

1

2

2

3

Step 1.3 & 1.4

3

4

4

5

5

6

6

7

7

8

8

9

9

10

10

ON

Note: The unit needs to have the Field Calibration completed by the operator before normal operation. To abort this calibration and reset to the previous settings, set the FIELD CAL switch(#2) OFF prior to the final OFF setting of the OUTPUT

CAL switch (Step 1.13) and turn off power. Wait 5 seconds and then turn on power and the previous settings will be loaded.

1

1

1

1

1

2

2

2

2

2

3

3

3

3

3

4

4

4

Step 1.11

4

Step 1.5

Step 1.7

Step 1.9

Step 1.13

4

5

5

5

5

5

6

6

6

6

6

7

7

7

7

7

8

8

8

8

8

9

9

9

9

9

10

10

10

10

10

ON

ON

ON

ON

ON

ON

Field Calibration with a Thermocouple Calibrator

1.1 Enable the Ice Point Compensation on the Thermocouple Calibrator and set it to the Thermocouple type being used in your application.

1.2 Connect the thermocouple wire as selected in step 1 to the TC input terminals of the ITMA and the thermocouple calibrator.

1.3 Set the ICE PT EN/DIS switch (#4) OFF to enable Ice Point Compensation.

1.4 Set the Type and Range for the thermocouple or mV used in your application

(DIP switches #6 through #10). (TC type “J”, Range 0 shown)

1.5 Set the FIELD CAL switch (#2) ON. [Output goes to -0.8 mA, 3.5 mA, or -0.4 V nominal]

1.6 Apply the input signal for the analog output low value.

1.7 Set the OUTPUT CAL switch (#1) ON. [Output stays at -0.8 mA, 3.5 mA, or -0.4

V nominal]

1.8 Adjust the input signal up until the output equals desired low value.

1.9 Set the OUTPUT CAL switch (#1) OFF. [Output increases to 22.9 mA, 22.5 mA, or 11.5 V nominal]

1.10 Apply the input signal for the analog output high value.

1.11 Set the OUTPUT CAL switch (#1) ON. [Output decreases to 21.1 mA, 20.7 mA, or 10.6 V nominal]

1.12 Adjust the input signal down until the output equals desired high value.

1.13 Set the OUTPUT CAL switch (#1) OFF.

1.14 Set the FIELD CAL switch (#2) OFF.

1.15 Disconnect the thermocouple calibrator from the ITMA and connect the actual sensor to be used in the application.

Step 1.14

2.0 Field Calibration With an Accurate Adjustable Millivolt Source: (Alternate Method)

VOLTAGE METER

OR

CURRENT METER

1 2 3 4 5 6 7 8 9 10

Step 2.2 & 2.3

ON

Note: The nominal output value for the various output ranges are designated in the following order: (0 to 20 mA, 4 to 20 mA, 0 to 10 VDC)

This calibration procedure can be used to assign the high and low input values if a thermocouple calibrator is not available.

I+

V+ 4

1 2

5

POWER

3

6

I-

V-

1 2 3 4 5 6 7

Step 2.4

8 9 10

ON

Note: To abort this calibration and reset to the previous settings, set the FIELD CAL switch(#2) OFF prior to the final OFF setting of the OUTPUT CAL switch (Step

2.12) and turn off power. Wait 5 seconds and then turn on power and the previous settings will be loaded.

ERROR

ADJUSTABLE

MILLIVOLT

SOURCE

+

TC-

TC+

VDC+

7

10

8

11

9

12

POWER SUPPLY

9 to 32 VDC

Field Calibration Wiring

VDC-

1

1

1

2

2

2

3

3

3

4

4

4

5

Step 2.6

5

Step 2.8

5

6

6

6

7

7

7

8

8

8

9

9

9

10

10

10

ON

ON

ON

2.1 Connect the accurate Adjustable Millivolt Source to the TC input terminals.

2.2 Set the ICE PT EN/DIS switch (#4) ON to disable Ice Point Compensation.

2.3 Set the Type and Range for the thermocouple or mV used in your application

(DIP switches #6 through #10).(TC type “J”, Range 0 shown)

2.4 Set the FIELD CAL switch (#2) ON.[Output goes to -0.8 mA, 3.5 mA, or -0.4 V nominal]

2.5 Apply the input signal (mV equivalent for the thermocouple temperature) for the analog output low value.

2.6 Set the OUTPUT CAL switch (#1) ON. [Output stays at -0.8 mA, 3.5 mA, or -0.4

V nominal]

2.7 Adjust the input signal up until the output equals desired low value.

Step 2.10

I+

V+ 4

1 2

5

3

6

I-

V-

MODEL ITMA 1 2 3 4 5 6 7

Step 2.12

8 9 10

ON

2.8 Set the OUTPUT CAL switch (#1) OFF. [Output increases to 22.9 mA, 22.5 mA, or 11.5 V nominal]

2.9 Apply the input signal (millivolt equivalent for the thermocouple temperature) for the analog output high value.

TC+

VDC+

POWER

ERROR

7

10

8

11 12

9-32 VDC

9

TC-

VDC-

10

9

8

7

6

5

4

3

2

1

RANGE

RANGE

TYPE

TC

TC TYPE

OPEN SEN DN

ICE PT DIS/EN

BASIC CAL

FIELD CAL

OUTPUT CAL

DIP SWITCH SETTINGS:

ON = 1 OFF = 0

1 2 3 4 5 6 7 8 9 10

1 2 3

Step 2.13

4 5 6 7 8 9 10

Step 2.14

ON

ON

2.10 Set the OUTPUT CAL switch (#1) ON. [Output decreases to 21.1 mA, 20.7 mA, or 10.6 V nominal]

2.11 Adjust the input signal down until the output equals desired high value.

2.12 Set the OUTPUT CAL switch (#1) OFF.

2.13 Set the FIELD CAL switch (#2) OFF.

2.14 Set the ICE PT EN/DIS switch (#4) OFF to enable Ice Point Compensation.

2.15 Disconnect millivolt source from the ITMA and connect the actual sensor to be used in the application.

4

3.0 Ice Point Calibration

VOLTAGE METER

OR

CURRENT METER

ADJUSTABLE

MILLIVOLT

SOURCE

-

+

TC-

TC+

VDC+

I+

V+

1

4

2

5

POWER

ERROR

3

6

7

10

8 9

11 12

I-

V-

PRECISION

THERMOMETER

VDC-

1 2 3 4 5 6 7 8 9 10

Step 3.1

1 2 3 4 5 6 7 8 9 10

POWER SUPPLY

9 to 32 VDC

Ice Point Calibration Wiring

Step 3.5

1 2 3 4 5 6 7 8 9 10

Step 3.5

1 2 3 4 5 6 7 8 9 10

Step 3.6

ON

ON

ON

Note: The nominal output value for the various output ranges are designated in the following order: (0 to 20 mA, 4 to 20 mA, 0 to 10 VDC)

The Ice Point Calibration should only be performed with an ambient temperature between 21°C and 29°C. This Calibration was performed on the unit at the factory during the Basic Calibration and generally does not need to be done again. The Ice

Point Compensation can be adjusted through this calibration. The Ice Point Calibration procedure is described below.

Note: Calibration can be aborted by setting the BASIC CAL switch(#3) OFF prior to the setting of the OUTPUT CAL switch OFF. (Step 3.6)

3.1 Connect a precision mV source with an accuracy of 0.02% to Terminal #7 TC+

Input and Terminal #8 TC- Input. Set the OUTPUT CAL switch (#1) and ICE PT

EN/DIS switch (#4) OFF. Set the BASIC CAL (#3) and FIELD CAL (#2) switches ON. The positions of switches #5 thru #10 are not relevant for this calibration procedure.

3.2 Connect a precision thermometer (accuracy of 0.1°C) to the unused terminal (#9) beside the TC Input terminals.

3.3 Apply power and allow a 30 minute warm-up period. [Output goes to -0.9 mA,

3.4 mA, or -0.5V nominal]

3.4 Using the temperature indicated by the precision thermometer, input an equivalent

1 mV/°C signal to the TC Input terminals and wait 5 seconds.

ON

3.5 Set the OUTPUT CAL switch (#1) ON and then OFF.

3.6 Set the BASIC CAL switch (#3) and FIELD CAL switch (#2) OFF. [Output increases to -0.8 mA, 3.5 mA, or -0.38 V nominal, or more]

4.0 Basic Calibration

POWER SUPPLY

9 to 32 VDC

Basic Calibration Wiring

I+

V+

TC+

VDC+

1 2

4 5

POWER

ERROR

7

10

8

11

9

12

3

6

I-

V-

TC-

VDC-

9-32 VDC

7

5

6

4

3

10

8

9

2

1

VOLTAGE METER

OR

CURRENT METER

ADJUSTABLE

MILLIVOLT

SOURCE

-

+

TC-

TC+

VDC+

I+

V+

1

4

2

5

POWER

ERROR

3

6

7

10

8 9

11 12

I-

V-

PRECISION

THERMOMETER

VDC-

1 2 3 4 5 6 7 8 9 10

Step 4.1

MODEL ITMA

RANGE

RANGE

TYPE

TC

TC TYPE

OPEN SEN DN

ICE PT DIS/EN

BASIC CAL

FIELD CAL

OUTPUT CAL

DIP SWITCH SETTINGS:

ON = 1 OFF = 0

1 2 3 4 5 6 7 8 9 10

1 2 3 4 5 6 7 8 9 10

Steps 4.3 to 4.15

1 2 3 4 5 6 7 8 9 10

Step 4.16

1 2 3 4 5 6 7 8 9 10

1 2 3 4 5 6 7 8 9 10

Step 4.17

1 2 3 4 5 6 7 8 9 10

Step 4.18

ON

ON

ON

ON

ON

ON

ON

Note: The nominal output value for the various output ranges are designated in the following order: (0 to 20 mA, 4 to 20 mA, 0 to 10 VDC)

The Basic Calibration should only be performed with an ambient temperature between 21°C and 29°C. The Basic Calibration was performed on the unit at the factory and generally does not need to be done again. This procedure initializes the unit by calibrating the input, and the Ice Point Compensation. The Basic Calibration should be performed only if a condition exists as described in the “Unit Malfunction” section. After completion of this calibration, the unit needs to be scaled in Field

Calibration. The Basic Calibration procedure is described below.

Note: To abort this calibration and reset to the previous settings, set the BASIC CAL switch(#3) OFF prior to the final setting of the OUTPUT CAL switch (Step 4.17) and turn off power for 5 seconds. Then turn on power and the previous settings will be loaded.

4.1 Connect a precision mV source with an accuracy of 0.02% to Terminal #7 (TC+

Input) and Terminal #8 (TC- Input). Set the ICE PT EN/DIS switch (#4),

RANGE (#9&#10), TYPE (#6, #7, and #8), OUTPUT CAL (#1), and FIELD

CAL (#2) switches OFF. Set the BASIC CAL switch (#3) ON.

4.2 Apply power and allow a 30 minute warm-up period. [Output goes to -0.9 mA,

3.4 mA, or -0.5 V nominal]

4.3 Set the OUTPUT CAL switch (#1) ON and then OFF.

4.4 Input -9 mV and wait 5 seconds.

4.5 Set the OUTPUT CAL switch (#1) ON and then OFF.

4.6 Input 6 mV and wait 5 seconds.

4.7 Set the OUTPUT CAL switch (#1) ON and then OFF.

4.8 Input 22 mV and wait 5 seconds.

4.9 Set the OUTPUT CAL switch (#1) ON and then OFF.

4.10 Input 41mV and wait 5 seconds.

4.11 Set the OUTPUT CAL switch (#1) ON and then OFF.

4.12 Input 63 mV and wait 5 seconds.

4.13 Set the OUTPUT CAL switch (#1) ON and then OFF.

4.14 Input 77 mV and wait 5 seconds.

4.15 Set the OUTPUT CAL switch (#1) ON and then OFF.

4.16 Ice Point Calibration. a. If ice point calibration is not desired, go to step 4.17.

b. To Enable ice point calibration, set the FIELD CAL switch (#2) ON.

1. Connect a precision thermometer (accuracy of 0.1°C) to the unused terminal beside the TC Input terminals.

2. Allow 5 minutes for the temperature to equalize.

3. Using the temperature indicated by the precision thermometer, input an equivalent 1 mV/°C signal to the TC Input terminals.

4.17 Set the OUTPUT CAL switch (#1) ON and then OFF.

4.18 Set the BASIC CAL switch (#3) and FIELD CAL switch (#2) OFF. [Output increases to -0.8 mA, 3.5 mA, or -0.4 V nominal, or more]

4.19 Perform a Field Calibration. (See Section 1.0)

5

INSTALLATION

The unit is equipped with a universal mounting foot for attachment to standard DIN style mounting rails, including G profile rail according to EN50035 - G32 , and top hat (T) profile rail according to EN50022 - 35 x 7.5 and 35 x 15. The unit should be installed in a location that does not exceed the maximum operating temperature and provides good air circulation. Placing the unit near devices that generate excessive heat should be avoided.

G Rail Installation

To install the ITMA on a “G” style DIN rail, angle the module so that the upper groove of the

“foot” catches under the lip of the top rail. Push the module toward the rail until it snaps into place. To remove a module from the rail, push up on the bottom of the module while pulling out away from the rail.

T Rail Installation

To install the ITMA on a

“T” style rail, angle the module so that the top groove of the “foot” is located over the lip of the top rail. Push the module toward the rail until it snaps into place. To remove a module from the rail, insert a screwdriver into the slot on the bottom of the

“foot”, and pry upwards on the module until it releases from the rail.

APPLICATION

The temperature of certain industrial plastics is critical for melt flow of an injection molding process. Different plastic grades and the complexity of the mold determine required temperatures for efficient material flow.

The master control room monitors the temperature of the melt flow of each injection mold machine. They will determine whether the operator may start the process on his machine or override the injection molding process. The injection molding machines are located throughout the plant, posing a thermocouple signal loss problem from long cable runs. The

ITMA DC powered unit is mounted at the machine and uses the local 24

VDC for power. The signal loss problem is solved using the 4 to 20 mA analog output for the long cable run to the master control room.

I+

V+

MELT FLOW

+

TC-

TC+

MACHINE'S

POWER SUPPLY

24VDC

COMM

VDC+

1 2 3

4 5

POWER

6

ERROR

7 8 9

10 11 12

I-

V-

VDC-

ORDERING INFORMATION

MODEL NO.

ITMA

DESCRIPTION

Intelligent Thermocouple Module

PART NUMBER

ITMA3035

+

-

MASTER

CONTROL

ROOM

6

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7

LIMITED WARRANTY

The Company warrants the products it manufactures against defects in materials and workmanship for a period limited to two years from the date of shipment, provided the products have been stored, handled, installed, and used under proper conditions. The Company’s liability under this limited warranty shall extend only to the repair or replacement of a defective product, at The Company’s option. The Company disclaims all liability for any affirmation, promise or representation with respect to the products.

The customer agrees to hold Red Lion Controls harmless from, defend, and indemnify RLC against damages, claims, and expenses arising out of subsequent sales of RLC products or products containing components manufactured by RLC and based upon personal injuries, deaths, property damage, lost profits, and other matters which Buyer, its employees, or sub-contractors are or may be to any extent liable, including without limitation penalties imposed by the Consumer Product Safety

Act (P.L. 92-573) and liability imposed upon any person pursuant to the Magnuson-Moss Warranty

Act (P.L. 93-637), as now in effect or as amended hereafter.

No warranties expressed or implied are created with respect to The Company’s products except those expressly contained herein. The Customer acknowledges the disclaimers and limitations contained herein and relies on no other warranties or affirmations.

Red Lion Controls

Headquarters

20 Willow Springs Circle

York PA 17406

Tel +1 (717) 767-6511

Fax +1 (717) 764-0839

Red Lion Controls

Europe

Softwareweg 9

NL - 3821 BN Amersfoort

Tel +31 (0) 334 723 225

Fax +31 (0) 334 893 793

Red Lion Controls

India

201-B, 2nd Floor, Park Centra

Opp 32 Mile Stone, Sector-30

Gurgaon-122002 Haryana, India

Tel +91 984 487 0503

Red Lion Controls

China

Unit 302, XinAn Plaza

Building 13, No.99 Tianzhou Road

ShangHai, P.R. China 200223

Tel +86 21 6113 3688

Fax +86 21 6113 3683

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