Kaman DIT-5200L User Manual

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DIT-5200L

Non-Contact Displacement

Differential Measuring System

User’s Manual

This apparatus, when installed and operated per the manufacturer’s recommendations,

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conforms with the protection requirements of EC Council Directive 89/336/EEC on the
approximation of the laws of the member states relating to Electromagnetic Compatibility.
Refer to the DIT-5200L Declaration of Conformity or contact Kaman Measuring Systems for

_____________________________________________________________________________

Kaman Precision Products PART NO: 860522-001

www.kamansensors.com

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Last Revised 11/16/2012

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Table of Contents

PART 1 - INTRODUCTION..........................................................................................................3

PART 2 – CONNECTING THE DIT-5200L...................................................................................4

2.1 What’s Included ................................................................................................................. 4

2.2 Cautions and Safeguards................................................................................................. 4

2.3 Pin out and Connector Assignments.............................................................................. 4

PART 3 – APPLICATION INFORMATION ...................................................................................6

3.1 Fixturing............................................................................................................................... 6

3.2 Sensor Mounting and Installation.................................................................................... 7

3.3 Electrical Nulling Procedure............................................................................................. 7

3.4 Optimizing Performance................................................................................................... 8

3.5 Factors That May Degrade Performance...................................................................... 8

3.6 Target Characteristics....................................................................................................... 9

PART 4 – CALIBRATION ...........................................................................................................11

PART 5 – GENERAL SPECIFICATIONS & TYPICAL PERFORMANCE...................................13

PART 6 - TROUBLESHOOTING................................................................................................15

APPENDIX A DIT-5200L SENSOR DIMENSIONS ..................................................................16

APPENDIX B DIT-5200L ENCLOSURE DIMENSIONS ...........................................................17

APPENDIX C TERMINOLOGY..................................................................................................18

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Kaman Precision Products PART NO: 860522-001

www.kamansensors.com

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Last Revised 11/16/2012

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PART 1 - INTRODUCTION

The DIT-5200L Non-Contact Displacement Measuring System is an advance in precision
measurement technology. It provides exceptional resolution, repeatability, and nulling accuracy
for detecting the aligned / centered position of a conductive target relative to a pair of non­contacting sensors.

The DIT-5200L is identical in form to Kaman’s previous DIT-5200 product. Enhancements have
resulted in lower noise (better resolution) and CE Marking.

The DIT-5200L uses advanced inductive measurement technology to detect the aligned or
centered position of a conductive target. For differential measurement applications, two precisely
matched sensors per channel are positioned on opposite sides or ends of a target. In this sensor­to-target relationship, as the target moves away from one sensor, it moves toward the other
sensor an equal amount. Output is differential and bipolar. Electrically matched sensors on
opposing legs of the same bridge provide exceptional thermal stability

Figure 1 DIT-5200L Circuit

The DIT-5200L signal conditioning electronics is packaged in is a die cast aluminum box with
MCX style sensor connections. The I/O is on a 9 pin mini-D connector. Input power connections
are reverse voltage protected.

The electronics can also be supplied as a bare PCB for installation inside the user’s enclosure.
Custom configurations can also be designed for OEM application requirements
The DIT5200L is CE Marked when purchased in the original enclosure. To maintain the CE
Marking, a ferrite must be installed over the input power wires only on the I/O cable.

_____________________________________________________________________________

Kaman Precision Products PART NO: 860522-001

www.kamansensors.com

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Last Revised 11/16/2012

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PART 2 – CONNECTING THE DIT-5200L

2.1 What’s Included

 DIT-5200L Signal Conditioning Electronics
 2 or 4 sensors (Typically 15N or 20N)
 18” Input/Output Cable

2.2 Cautions and Safeguards

The sensor faces may be damaged if allowed to strike the target or other hard surface. Protective
plastic caps should remain in place until the sensors are ready for installation.

The maximum input voltage to the DIT-5200L is +/-15.5V, exceeding this input voltage will cause
damage to the DIT-5200L.

2.3 Pin out and Connector Assignments

The DIT-5200L I/O connections are via an ITT Cannon model MDM-9SL2P connector on the
enclosure. A mating connector with 18 inch leads is provided as part of the system. Connection
information is detailed below.

Sensor connections are the same for both the enclosure style and the OEM DIT-5200L. On the
OEM DIT-5200L orient the box so the I/O connector is on the right and the sensor connections
are on the left.

Pin Color Function

1 Black +15V @ 40 mA

(typical).

2 Brown -15V @ 40 mA

(typical)

3 Red Power Supply

Common
4 Orange +X Output
5 Yellow -X (Gnd)
6 Green +Y Output
7 Blue -Y(Gnd)
8 Violet N/C
9 Gray N/C

Figure 2 I/O Connector

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Kaman Precision Products PART NO: 860522-001

www.kamansensors.com

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Last Revised 11/16/2012

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Function Sensor Label

Axis 1 Positive

Sensor

Axis 1 Negative

Sensor

Axis 2 Positive

Sensor

Axis 2 Negative

Sensor

+X

-X

+Y

-Y

Figure 3 Sensor Connections

The output on the channel will become more positive with movement toward the positive (+)
sensor. The output on the channel will become more negative with movement toward the
negative (-) sensor.

On single channel systems only the Axis 1 (X channel) is used.
The system is set up with the sensors as marked. Sensors are supplied as matched pairs for

optimum performance. Swapping sensors will result in degraded performance without factory
recalibration.

_____________________________________________________________________________

Kaman Precision Products PART NO: 860522-001

www.kamansensors.com

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Last Revised 11/16/2012

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PART 3 – APPLICATION INFORMATION

For differential measurement applications, the two electronically matched sensors are positioned
on opposite sides or ends of the target. The sensor to target relationship is such that as the target
moves away from one sensor, it moves toward the other an equal amount.

Figure 4 Sensor/Target Relationship

Standard systems come with two measurement axes (four sensors; two per axis) and can
therefore be fixtured a number of ways to provided precise x-y alignment. The figure below
illustrates target configuration for x-y alignment of an image stabilization mirror for an electro­optical application.

Figure 5 Sensor Position on a Stabilization Mirror

3.1 Fixturing

The user provides fixturing for the DIT-5200L electronics and sensors. The following information
establishes fixturing requirements for optimum system performance. Both the sensor and target
fixturing must be structurally sound and repeatable

_____________________________________________________________________________

Kaman Precision Products PART NO: 860522-001

www.kamansensors.com

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Last Revised 11/16/2012