LDX-D

User’s Guide

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M-4346/1113

Index

1.0

Safety Information

1.1 Electrostatic discharge

2.0

Installation

2.1 Mounting and Access

2.2 Connections and Link Identification

2.3 Description of Links

2.4 Primary Frequency

2.5 Transducer Input Load

2.6 Bandwidth

2.7 Basic Configuration

2.8 Output Descriptions

2.9 Connections

2.10 Placement and EMC

2.11 LDX-D Synchronization

3.0 Setting Up

3.1 Set-up Summary

3.2 Set-up Procedure

Index

8

9

7

7

5

6

4

4

7

10

11

14

15

15

16

2

3

1

4.0

MATH Functions

4.1 MATH Introduction

4.2 MATH Set-up Procedure

5.0

Transducer Sensitivity

5.1 X1, X2, X5 and DIV2 Link

6.0

Application

6.1 Application Example

7.0

Specification

7.1 Mechanical Outline

7.2 Technical Specification

Return of Goods

M-4346/1113

20

20

21

21

18

18

19

22

22

23

1.0 Safety Information

Terms in this Manual

WARNING statements identify conditions or

practices that could result in personal injury or loss of life.

CAUTION statements identify conditions or practices

that could result in damage to the equipment or other property.

Symbols in this manual

This symbol indicates where applicable cautionary or other information is to be found.

Warnings & Cautions

WARNING: Do not operate in an explosive atmosphere

WARNING: Safety critical environments

This equipment is not intended for use in a safety critical environment

CAUTION: Low voltage

This equipment operates at below the SELV and is therefore outside the scope of the Low Voltage Directive.

This equipment is designed to work from a low voltage

DC supply. Do not operate this equipment outside of specification.

1.0 Safety Information

2

M-4346/1113

1.0 Safety Information (cont.)

Warnings & Cautions

1.1 CAUTION: Electrostatic Discharge

This equipment is susceptible to electrostatic discharge

(ESD) when being installed or adjusted, or whenever the case cover is removed. To prevent ESD related damage, handle the conditioning electronics by its case and do not touch the connector pins.

During installation, please observe the following guidelines:

• Ensure all power supplies are turned off.

• If possible, wear an ESD strap connected to ground. If this is not possible, discharge yourself by touching a metal part of the equipment into which the conditioning electronics is being installed.

• Connect the transducer and power supplies with the power switched off.

• Ensure any tools used are discharged by contacting them against a metal part of the equipment into which the conditioning electronics is being installed.

• During setting up of the conditioning electronics, make link configuration changes with the power supply turned off. Avoid touching any other components.

• Make the final gain and offset potentiometer adjustments, with power applied, using an appropriate potentiometer adjustment tool or a small insulated screwdriver.

1.0 Safety Information (cont.)

3

M-4346/1113

2.0 Installation

2.1 Mounting and Access

Before mounting the LDX-D, please refer to section 2.10.

Hook the LDX-D on the DIN rail with the release clip facing down and push onto the rail until a ‘click’ is heard.

To remove, use a screwdriver to lever the release clip down. Pull the bottom of the housing away from the rail and unhook.

1 2

3

4

DIN Rail Cover release latch Withdraw PCB

To access internal links, the front cover and PCB must be withdrawn from the housing. Use a screwdriver or similar tool to depress the top latch. The cover will spring forward. Repeat with the bottom latch, then gently pull the PCB out.

2.0 Installation

4

M-4346/1113

2.0 Installation (cont.)

2.2 Connections and link identification

Transducer

• Primary Frequency

• Synchronization

1

5

2

6

Power

Fine Adjust

Gain

Offset

3

7

4

8

9 output

13 power

12

+

16

1 Synchronization 1

2 Synchronization 2

3 Primary (red)

4 Primary (blue)

5 Screen (0 V)

6 CT (yellow)

7 Secondary (green)

8 Secondary (white)

Power Supply & Outputs

9 Voltage Output

10 Math OUT

11 Signal 0 V

12 Current OUT

13 Math External IN

14 Inverted Math OUT

15 –VE power supply

16 +VE power supply

• Coarse Offset

• Input Load

• Input Gain

• Coarse Gain

• Bandwidth

• Null at set-up

9 10 11 12

• Maths

13 14 15 16

Terminals 5, 11, and 15 are internally connected but, for best performance, they should be treated as separate terminals.

Note: If the output polarity is incorrect, reverse the transducer secondary connections

2.0 Installation (cont.)

5

M-4346/1113

2.0 Installation (cont.)

2.3 Description of links

The table below and subsequent diagrams explain the link functions and detail the factory settings.

Link

COARSE GAIN

COARSE OFFSET

NULL

PRIMARY

MT

INPUT LOAD

INPUT GAIN

BW

MATH

Description

Select coarse output gain

Select coarse output offset

Options

Range 1 to 6

+VE, -VE, 5 V, 10 V

Used during set-up to null output Output in null state or enabled

Select primary frequency 5 kHz, 10 kHz, 13 kHz

Select synchronization mode Master or track

Select transducer secondary load 100 kW

or 2 kW

Input gain X1, X2, X5, DIV2

Sets output signal bandwidth

Enables maths option

L = 500 Hz, H = 1 kHz

A+B, A-B, (A+B)/2, (A-B)/2

Factory Setting

Link ON, position 1

No offset, links PARKED

Link PARKED, output enabled

Both links ON, 5 kHz

Set as master

Link PARKED, 100 kW

Link ON, X1

Link ON, 500 Hz

Links PARKED, maths not set

Note: If the output polarity is incorrect, reverse the transducer secondary connections.

2.0 Installation (cont.)

6

Link ON Link PARKED

Link OFF

M-4346/1113

2.0 Installation (cont.)

2.4 Primary Frequency

The LDX-D primary frequency is set using links as shown below. Transducer specifications determine the optimum frequency.

Primary amplitude is not adjustable. The DRC uses ratiometric techniques and is insensitive to primary amplitude. Maximum secondary transducer amplitudes must be observed.

Refer to section 5.1.

1

2

3

4

5 1 0 1 3

M T

5 kHz

1

2

3

4

10 kHz

3

4

1

2

13 kHz

1

2

3

4

2.5 Transducer Input Load

The LDX-D has two input load ranges.

100 k

Ω is often used for LVDT transducers while 2 k

Ω is often used for Half Bridge transducers. If loads of less than 100 k

Ω are required, an external resistor may be wired across the SEC1 and SEC2 terminals. Most transducers perform well into 100 k

Ω. See specification section 7.2 for further details.

100 k

Ω - link PARKED

2 k

Ω - link ON

2.6 Bandwidth

The LDX-D has selectable bandwidth (BW). The bandwidth setting is independent of other DRC settings. Where possible, the lowest bandwidth setting should be used to minimize output noise.

500 Hz - Link ON

1 kHz - Link PARKED

Note: Total system bandwidth is dependent on probe type and application

2.0 Installation (cont.)

7

M-4346/1113

2.0 Installation (cont.)

2.7 Basic Configuration

Please refer to section 2.10 before installation.

A floating output power supply is recommended as it will minimize ground loop noise problems.

Please refer to section 6.1

for a typical arrangement.

Power Supply

10-30 VDC pri1

3 pri2

4 sec1

7

CT

6 sec2

8 screen

5

0V

(GND)

Sy1 Sy2

1 2

Transducer

+

16

Power converter

-

15

0V

(GND)

2.0 Installation (cont.)

8

Output

11

0V

(GND)

9

Vout

Voltage

12

Iout

+

Current

-

+

-

Math 10

14

Voltage and current connections are shown.

Generally only one type is used.

M-4346/1113

2.0 Installation (cont.)

2.8 Output Descriptions

Coarse Gain

Input Gain

This section describes how the various outputs of the LDX-D are related.

Transducer

Circuits

Offsets

+

-

Vout

This is a voltage output. The gain and offset controls are used to set the required output range. All other outputs are affected by changes made to Vout.

Iout

This is a current output only, LDX-D is not loop powered. This can be set for up to

±20 mA. A common output is 4-20 mA. The Iout is proportional to Vout but cannot be independently adjusted. The approximate relationship is shown below:

Voltage (V)

-10 -8 -6 -4 -2 0 2 4 6 8 10

Current (mA)

-20 -16 -12 -8 -4 0 4 8 12 16 20

When relating current to voltage, 4-20 mA is the same as a 2 to 10 V span (or ±4 V with a +6 V offset).

Mout

Mout is the main MATH output. This is a voltage output. Vout and Min are combined in the MATH section. The output of this section is inverted to keep the signal polarity the same as Vout.

Mout# This is an auxiliary voltage output. This is the direct output of the MATH stage and

is the inverse of Vout. If MATH options are not selected then Mout ∝ Mout# ∝ Vout.

Refer to section 4.1.

Min

All outputs may be used at the same time but cannot be independently adjusted for scalefactor or offset.

2.0 Installation (cont.)

9

Fine Gain

I

∝

V

-1

MATH

-1

Vout

Iout

Mout#

Mout

M-4346/1113

2.0 Installation (cont.)

2.9 Connections

The diagram in section 2.7 shows a basic connection with LVDT. The following diagram gives further details of Omega LVDT transducers and alternative connections for Half Bridge transducers.

LVDT

Pri1 (red)

3

Pri2 (blue)

4

Sec1 (green)

7

CT (yellow)

6

Sec2 (white)

8 screen

5

0 V (GND)

LVDT Electrical Connections

Red and blue

Green and white

Yellow

Black

Primary (energising)

Secondary (signal)

Secondary center tap

Transducer body ground

Half-Bridge

Pri1 (red)

3

Pri2 (blue)

4

Sec1 (yellow)

7

LINK

Screen

CT

Sec2

6

8

5

0V (GND)

Half Bridge Electrical Connections

Red and blue

Yellow

Black

Energising

Signal

Transducer body ground

The CT terminal is provided to terminate the center tap (CT) connection of a transducer if present. There is no electrical connection within the LDX-D. This is provided to allow for quadrature components to be fitted if required.

2.0 Installation (cont.)

10

M-4346/1113

2.0 Installation (cont.)

2.10 Placement and EMC

LDX-D has been designed to comply with EMC regulations. For best performance, the EMC compliance of surrounding equipment must be considered. High levels of EMI (electro magnetic interference) can affect the performance of LDX-D.

Residential, Commercial and Light Industrial Environments

Typically this will be an office, laboratory or industrial environment where there is no equipment likely to produce high levels of electrical interference such as welders or machine tools. Connections may be made using twisted unscreened wire which is a cost-effective option giving good performance in this environment. Standard equipment wire such as 7/0.2 (24AWG) can be twisted together as required. Standard data cable such as a generic CAT5 UTP will also give good performance.

Industrial Environments

Typically this will be an industrial environment where there is equipment likely to produce high levels of electrical interference such as welders, large machine tools, cutting or stamping machines. LDX-D should be mounted inside an industrial steel enclosure designed for EMI screening. Many enclosures, though metal, are not designed for good screening and so careful installation is important. Place LDX-D away from equipment within the enclosure that is likely to produce high levels of EMI.

Connections should be made using a screened cable (braided or foil screened cables may be used). The cable screen should be connected to the housing at the cable entry point. An EMC cable gland is recommended. If this is not possible, then the unscreened section of cable should be kept as short as possible, and the screen should be connected to a local ground.

Where possible, the LDX-D should be the only ground connection point. If voltage, current or power supplies are ground referenced and connected at some distance from LDX-D, then noise may be introduced.

All 0 V terminals on LDX-D are connected internally. Ground 2 may be connected to any of the LDX-D 0 V terminals, however terminal 11 is preferred. Screen ground (ground 1) may be connected via terminal 11. Only one local ground is needed for each

LDX-D.

A local power supply is ideal but, if this is not possible, a screened cable arrangement can be used to reduce noise picked up.

2.0 Installation (cont.)

11

M-4346/1113

2.0 Installation (cont.)

Keep exposed cable as short as possible

Ground

1 and 2

Connect screen to chassis ground

2.0 Installation (cont.)

Keep exposed cable as short as possible

EMC gland

Enclosure

12

Ground

1

Ground

2

M-4346/1113

2.0 Installation (cont.)

Transducer

Power supply pri1

3 pri2

4 sec1

7

CT

6 sec2

8 screen

5

0V

(GND)

+

16

Sy1

1

Sy2

2

Transducer

Power converter

-

15

0V

(GND)

Output

9

Vout

12

Ground 1

Math

11

0V

(GND)

13 Min

10 Mout

14

Mout#

Ground 2

2.0 Installation (cont.)

13

Voltage

+

-

M-4346/1113

2.0 Installation (cont.)

2.11 LDX-D Synchronization

When a system comprises several LDX-D modules, it is possible to synchronise primary oscillator phases. Synchronization will not be required for most installations. It is only required when transducers and their cables are installed in close proximity to each other and there may be electrical interaction or cross-talk between probes. This may be seen as a change in output from one module when the probe connected to an adjacent module is moved. Even when probes are installed close to each other, synchronization may not be required as cable shielding is generally effective. If interactions are seen, the cause is often poor 0

V or screen connection or mechanical effects between probes when mounted together.

PCB Idents

5 10 13

1

2

3

4

M T

Link Positions

(Primary links not shown)

2.0 Installation (cont.)

14

MASTER TRACK

M-4346/1113

3.0 Setting Up

3.1 Set-up Summary

This is a set-up summary. A more detailed procedure is included in following sections but these simple steps describe a typical setting procedure and apply to most applications. Other procedures may be used as appropriate.

Step 1 Step 2 Step 3 Step 4 Step 5

Set links as required* • Add offset if required • Final checks • Set LDX-D output to zero

• Move transducer to full scale position

• Align transducer null • Set LDX-D coarse and fine gain

• Set LDX-D coarse and fine offset

• Repeat steps 2 - 4 to check setting

Primary frequency

Transducer load

Initial gain

Bandwidth

No offset*

No MATH*

Shift zero

0V

transducer

+5V

electronics

+10V

Null

Zero

electronics transducer

-5V

Zero

electronics transducer

Null

+5V

Null



*If in doubt about initial link position, use the factory setting. Performing initial set-up without offset and MATH options makes set-up easier.

Note: If the output polarity is incorrect, reverse the transducer secondary connections.

For a bi-polar output i.e. ±10 VDC or ±20 mA, follow steps 1 to 3.

For a uni-polar output i.e. 0-10 VDC, 0-20 mA or 4-20 mA, follow steps 1 to 4.

In either case, step 5 (final checks) should be followed to complete the set-up.

3.0 Setting Up

15

M-4346/1113

3.0 Setting Up (cont.)

3.2 Set-up Procedure

Step 1 - Set-up LDX-D links

If the transducer characteristics are known, set the frequency and input resistance links as required.

If the transducer is known to be outside the standard sensitivity range, the X1, X2, X5 or DIV2 links will have to be used. Please refer to section 5.1

Step 2 - Align LDX-D and transducer null

Any electrical offset in the LDX-D is removed. The transducer position is adjusted so that transducer and LDX-D nulls are aligned.

Null the LDX-D

1 Put the gain link onto the null position. This puts a temporary short across the transducer input and allows any electronics offset to be removed

2 Adjust the fine offset control to give as near zero output as practical

Null the transducer

3 Replace the gain link to the original position

4 Adjust the position of the transducer to give as near zero output as practical. This is the center of the mechanical range

If the transducer cannot be centered for practical reasons, an offset will remain within the system. There may be noticeable interaction between gain and offset adjustment. This does not prevent the LDX-D being set-up, although several iterations may be required when adjusting gain and offset. Please consult your supplier for guidance if required.

3.0 Setting Up (cont.)

16

M-4346/1113

3.0 Setting Up (cont.)

Step 3 - Setting bi-polar (±) full scale output

1 Move the transducer to the position where maximum LDX-D output is required

2 If the output polarity is wrong, reverse the transducer secondary connections (terminals 7 & 8). Move the transducer back and recheck the zero position

3 Move the coarse gain link along from position 1 towards position 6 until the LDX-D output is near the required value

4 Adjust the fine gain control to give the required output

5 The bi-polar output is now set. Proceed to step 5

If a uni-polar output is required proceed to step 4.

Example: ±10 V is required from a ±1 mm transducer. Set the transducer at the +1 mm position and set the output to +10 V.

Step 4 - Setting uni-polar full scale output (adding an offset)

1 Move the transducer to the null position. LDX-D output will be 0 V or 0 mA

2 Apply offset using the +VE, -VE, 5V and 10 V links and adjust the fine offset control to set precisely. Both links may be used to give greater offset shift. Proceed to step 5

Example: 0-10 V is required for a ±1 mm transducer. Set the transducer to give ±5 V over the full range and then, with the transducer at

null, add +5 V offset. Adjust the fine offset to give 5 V. When the transducer is moved to the +1 mm position, the output will be +10 V.

Example: 4-20 mA is required for a ±1 mm transducer. Set the transducer to give ±8 mA over range and then, with the transducer at null,

add +5 V (≈10 mA) offset. Adjust the fine offset to give +12 mA. When the transducer is moved to the +1 mm position, the output will be +20 mA.

Step 5 - Final checks

Ensure that calibration is correct by moving the transducer across the required mechanical range (including the mid position) and checking the calibration points. Fine adjustments can be made if required.

It may only be possible to set the output accurately at the two calibration points. This is due to non-linearity within the transducer.

3.0 Setting Up (cont.)

17

M-4346/1113

4.0 MATH Functions

4.1 MATH Introduction

By linking two LDX-D modules, the following analog arithmetic may be performed: A+B, A-B, (A+B)/2 and (A-B)/2.

The output of LDX-D A, Vout

A

, is connected to the Min terminal of LDX-D B. The output of LDX-D B is routed internally to the arithmetic circuits and the result is available at the Mout terminal.

The inverse of Mout is available as Mout#. Vout, Mout and Mout# may be used at the same time, however they are not individually adjustable.

1 2

Transducer

A

7

6

3

4

8

LDX-D A

No MATH link setting required

Vout ∝ transducer A position

Mout = Vout

Mout# = 1/Mout =

1/Vout

16

15

5

0V

(GND)

Transducer

Power

Supply

4.0 MATH Functions

Output

9

Vout

12

Iout

Math

11

0V

(GND)

13

Min

10

Mout

14

Mout#

1 2

Transducer

B

7

6

3

4

8

LDX-D B

Math links set as

A-B (example)

Vout ∝ transducer B position

Mout = Vout

A

- Vout

B

Mout# = 1/ Mout

16

15

5

0V

(GND)

Transducer

Power

Supply

18

Output

9

Vout

12

Iout

Math

11

0V

(GND)

13

Min

10

Mout

14

Mout#

+

-

V

M-4346/1113

4.0 MATH Functions (cont.)

4.2 MATH Set-up Procedure

3

4

1

2

A+B A-B

LINK FOR

(X)/2

A+B

1

2

3

4

A-B

1

2

3

4

(A+B)/2

1

2

3

4

(A-B)/2

1

2

3

4 4

Mout=Vout

1

2

3

Setting up two LDX-D for MATH can become confusing as the output of each LDX-D will affect the final output. The steps below are guidelines to help the set-up process.

Step 1 - Requirements

Write down the arithmetic required and the range of outputs likely to be seen. This will allow the requirement for each individual LDX-D to be determined. Vout of each LDX-D is used.

Example: ±10 V required for A-B.

If each LDX-D is set to ±10 V, then A-B would calculate to be ±20 V. However, as this is not possible, each LDX-D must be set to

±5 V or use ±10 V (A-B)/2.

Example: 0-10 V required for A+B.

Set each LDX-D for 0-5 V or set each LDX-D to 0-10 V and use (A+B)/2.

Step 2 - Initial set-up

Set up each LDX-D as an individual module first.

Working around transducer null and having a ±V output will make set-up easier.

Step 3 - Final checks and further comments

Initially each LDX-D Vout may have been set to an accurate zero but an offset may still be seen at Mout. This is because of offsets inherent within the MATH circuits. To remove this offset, adjust one of the Vout offsets. Mout offset adjustment is best performed on the LDX-D set for MATH.

4.0 MATH Functions (cont.)

19

M-4346/1113

5.0 Transducer Sensitivity

5.1 X1, X2, X5 and DIV2 link

The LDX-D compensates for changes in primary signal amplitude by producing an internal error signal that is the ratio between the primary and secondary signals. If the transducer output signal is too high or too, low errors may occur that can degrade the performance of the LDX-D/transducer combination. For these transducers the X1, X2, X5 or DIV2 input gain link must be used.

Calculating transducer Full Range Output (FRO)

In general, transducer sensitivity is quoted as mV/V/mm where:

mV = output of the transducer V = primary voltage mm = mechanical position of the transducer from null (usually mid mechanical range).

To calculate the transducer full range output, simply multiply all three together.

Example:

GP911-1 sensitivity is 210 mV/V/mm

LDX-D primary voltage is 3 V

GP911-1 range is ±1 mm

Transducer full range output is 210 x 3 x 1 = 630 mV (0.63 V). It falls within the standard range.

Set the X2, X5, DIV2 link as shown in the table below:

Transducer Full Range Output

400 mV FRO to 2500 mV FRO

150 mV FRO to 400 mV FRO

150 mV FRO to 400 mV FRO

2500 mV FRO to 5000 mV FRO

5.0 Transducer Sensitivity

Comment

Standard range

Low output transducer

Very low output transducer

High output transducer

20

Input Gain Link setting

Link ON X1

Link ON X2

Link ON X5

DIV2 - Links X1, X2, X5 parked (ie. all OFF)

M-4346/1113

6.0 Application

6.1 Application example

Probe B Probe A

Mains in

1 2 3 4

5 6 7 8

5 6 7 8

1 2 3 4

5 6 7 8

Phoenix Contact MINI_PS power supply shown

- -

- -

+ +

+

+

IN 120 – 230 VAC

L

NC NC

N

1 4 sy1 sy2 pri1 pri2

5 8 scn CT sec1 sec2

Power

Fine Adjust

Gain

Offset

Vout Mout 0V Iout

9 output

12

13

+

1 4 sy1 sy2 pri1 pri2

5 8 scn CT sec1 sec2

Power

Fine Adjust

Gain

Offset

Vout Mout 0V Iout

9 output

Min Mout#

13 power

+

9 10 11 12 9 10 11 12

13 14 15 16 13 14 15 16

LDX-D A

LDX-D B

6.0 Application

LDX-D B set to A-B

Chassis/Ground

DVM = probe A - probe B

AUTO

Vdc

I dc



Vac

I ac

AUTO

Hi

V



Lo m A

Hi G uar d

LDX-D A linked to LDX-D B

21

Actual installation may differ depending on requirements.

This is one practical example.

M-4346/1113

7.0 Specification

7.1 Mechanical Outline (mm)

111.0

7.0 Specification

Solartron Metrology Ltd.

Bognor Regis PO22 9ST

UK www.solartronmetrology.com [email protected]

114.5

22

22.5

M-4346/1113

7.0 Specification (cont.)

7.2 Technical Specification

Power Requirement

Voltage Range

Current Range

Transducer Excitation

Primary Voltage

Primary Frequency

Primary Current

Link Selectable

Signal Input (Transducer Sensitivity Range)

Standard X1

Gain Range

Link Select

Special input gain X2

Special input gain X5

Special input gain DIV2

Input Load Resistance

Options

Signal Output

Voltage Output

Current Output

Output Ripple

Output Offset

10 to 30 VDC

160 mA at 10 V to 70 mA at 30 V

3 V rms nominal

5 kHz, 10 kHz or 13 kHz

30 mA max.

400 to 2500 mV FRO (in 6 gain ranges)

150 to 400 mV FRO

55 to 150 mV FRO

2500 to 5000 mV FRO

100 kW, 2 kW

1

See note

2

Up to 100%

(coarse & fine adjustment)

Up to ±10 VDC 3, 4

Up to ±20 mA into 500 W load 4

<1 mV rms

Coarse (link selectable)

Fine (front panel adjust)

±10 VDC (≈20 mA),

±5 VDC (≈10 mA)

±2.5 VDC (≈5.6 mA)

7.0 Specification (cont.)

23

M-4346/1113

7.0 Specification (cont.)

Signal Output (cont.)

Temp. Co. Gain

Temp. Co. Offset

Warm-up

Linearity

Bandwidth (-3 dB)

Maths

Link Selectable

Link Selectable

Maths Accuracy

Environmental

Operational Temperature Range

Storage Temperature Range

Certification

Immunity

Emissions

Mechanical and Connections

Transducer

Power Supply

Output Signal

Enclosure (size)

Weight

Material

7.0 Specification (cont.)

<0.01% FRO/ºC

<0.01% FRO/ºC

15 minutes recommended

<0.1% FRO

500 Hz, 1 kHz

A + B, A - B, (A +B)/2, (A - B)/2

5

0.1% FRO

0 to 60ºC (32 to 140ºF)

-20 to 85ºC (-4 to 185ºF)

BS EN61000-6-2:2001 Immunity for Industrial Environments

6

BS EN61000-6-3:2001 Emission for Residential, Commercial and Light-Industrial Environments

6

Screw terminals

Screw terminals

Screw terminals

114.5 x 99 x 22.5 mm

120 g

Green polyamide

24

M-4346/1113

7.0 Specification (cont.)

Notes

1

Omega Transducers are calibrated using the following loads:

LVDT

Half Bridge

Standardised (plugged)

10 kW

2 kW

Non-standardised (unplugged)

100 kW

1 kW

Displacement

100 kW n/a

When a standard LVDT transducer is connected to LDX-D set for 100 kW, transducer characteristics will be similar to the nonstandardised (unplugged) version of that transducer. When a non-standardised (unplugged) Half Bridge transducer is connected to LDX-D set for 2 kW, transducer characteristics will be similar to the standardised (plugged) version of that transducer. Any difference in transducer sensitivity is removed during LDX-D set-up.

Where load resistance is critical, an external resistor may be fitted. If a 10 kW

load is required an additional 11 kW resistor may be used in conjunction with the 100 kW internal load. This may be connected across the SEC1 (7) and SEC2 (8) terminals.

If a 1 kW

load is required, an additional 1 kW resistor may be used.

2 No input options are offered. As connection of transducer is by screw terminal, additional internal configuration methods are not required. By changing connections and use of external components, the user can perform:

•

Change input polarity • Half Bridge connection • Grounding one side of the input • Phase correction • Quad resistors.

3

LDX-D can drive into a 1 kW load but this offers no advantage. 10-100 kW is recommended.

7.0 Specification (cont.)

25

M-4346/1113

7.0 Specification (cont.)

4

Output range can be adjusted as required anywhere within this range by using a combination of gain and offset, for example: ±10 VDC, ±5 VDC, 0-5 VDC, 0-10 VDC, 4-20 mA.

5

Maths requires the use of a second LDX-D. An additional output offset may be seen at any of the MATH outputs. This is not specified as it is trimmed out during set-up.

6

The LDX-D is able to comply with the toughest electrical emissions and immunity regulations. Compliance requires proper installation according to the user manual. Compliance does not guarantee performance as the installation environment may be outside of test specification limits. The flexibility of LDX-D means it can be installed in a variety of ways according to user requirements. Simple installations with short non-screened cables will meet the lesser light-industrial immunity regulations.

Heavy industrial installations, especially with longer cables, will need more careful installation with screened cables.

7.0 Specification (cont.)

26

M-4346/1113

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials andworkmanship for a period of 13 months from date of purchase. OMEGA’s 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 malfunctions, 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 having been 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, EXPRESS

OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY

WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HERE-

BY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser setforth 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 specialdamages.

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 forthin 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 numbershould 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. Purchase Order 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. Purchase Order number to cover the COST of the repair,

2. Model and serial number of the 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 2004 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 the prior written consent of OMEGA

ENGINEERING, INC.

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M-4346/1113