Omega Products DP-7600 Installation Manual

DP-7600

High Speed Strain Gauge Readout

omega.com

e-mail: [e-mail]

For latest product manuals:

omegamanual.info

User’s Guide

Shop online at

Servicing North America:

USA: One Omega Drive, Box 4047

ISO 9001 Certified Stamford CT 06907-0047

Tel: [phone] FAX: [phone]
e-mail: [e-mail]

Canada: 976 Bergar

Laval (Quebec) H7L 5A1, Canada
Tel: [phone] FAX: [phone]
e-mail: [e-mail]

For immediate technical or application assistance:

USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA

®

Customer Service: 1-800-622-2378 / 1-800-622-BEST

®

Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN

®

TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA

Mexico: En Espan˜ol: [phone]-7803 e-mail: [e-mail]

FAX: [phone] [e-mail]

Servicing Europe:

Benelux: Postbus 8034, 1180 LAAmstelveen, The Netherlands

Tel: [phone] FAX: [phone]
Toll Free in Benelux: 0800 0993344
e-mail: [e-mail]

Czech Republic: Frystatska 184, 733 01 Karvina´, Czech Republic

Tel: [phone] FAX: [phone]
Toll Free: 0800-1-66342 e-mail: [e-mail]

France: 11, rue Jacques Cartier, 78280 Guyancourt, France

Tel: [phone] FAX: [phone]
Toll Free in France: 0800 466 342
e-mail: [e-mail]

Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

Tel: [phone] FAX: [phone]
Toll Free in Germany: 0800 639 7678
e-mail: [e-mail]

United Kingdom: One Omega Drive, River Bend Technology Centre

ISO 9002 Certified Northbank, Irlam, Manchester

M44 5BD United Kingdom
Tel: [phone] FAX: [phone]
Toll Free in United Kingdom: 0800-488-488
e-mail: [e-mail]

OMEGAnet®Online Service Internet e-mail

www.omega.com [e-mail]

It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that
apply. OMEGA is constantly pursuing certification of its products to the European New Approach
Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts
no liability for any errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, human applications.

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’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
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 W

ARRANTY 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.

TABLE OF CONTENTS

DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

SWITCH FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

LED INDICATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Limit Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Limit One Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Decimal Point Position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Filter Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Baud Rate Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Echo Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Linefeed Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Unit Address Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Legend Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Continuous Update. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Device Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Serial Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Protection Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Protection Code Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Span Number Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Dead Weight Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Dead Weight Stay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

SERIAL COMMUNICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Echo. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Line Feed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Address Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Address Disable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Read Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Set Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Peak and Runout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Remote Tare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

TABLE OF CONTENTS

Test Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Continuous Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Set Legend. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Remote Serial Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Decimal Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Reading Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Absolute or Relative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Set Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Calibration Span Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Serial Reading Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Limit Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

REMOTE INPUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

DP-7600 SENSITIVITY SETTINGS. . . . . . . . . . . . . . . . . . . . . . . . . 14

EXCITATION SETTINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

DP-7600 BACK VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

DP-7600 REAR TERMINATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 15

SCHEMATIC (DP-7600 Top Board) . . . . . . . . . . . . . . . . . . . . . . . . . 16

SCHEMATIC (DP-7600 Bottom Board) . . . . . . . . . . . . . . . . . . . . . . 19

SCHEMATIC (DP-7600 Analog Input Option Board) . . . . . . . . . . . 21

SCHEMATIC (DP-7600 Output Option Board) . . . . . . . . . . . . . . . . 22

SCHEMATIC (DP-7600 RS232/RS485 Option Board) . . . . . . . . . . 23

DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inside Back Cover

DESCRIPTION:

The Model DP-7600 is a high speed, high resolution, strain gauge readout. The unit
performs 1000 conversions per second with 15 bits (plus sign) resolution. Limit check­ing and Peak/Runout tracking are all done at a user selectable rate (from 1 - 500Hz);
meanwhile, the display provides a stable 1Hz filtered data reading. Peak and runout
data can also be displayed using front panel switches. A tare reading of up to 50% of
span can be entered with a single front panel switch press. The tare feature can be
enabled or disabled at any time, without losing the tare value itself, using the unit’s
absolute and relative reading modes. Limit status and display mode settings are always
clearly indicated with front panel LED’s. Programming of the unit is easily performed
using all five of the front panel switches, and calibration requires a security code
which prevents unwanted corruption of calibration data. Remote interfacing is avail­able via RS232/RS485 (optional), or active low logic inputs located on the rear of the
unit.

SWITCH FUNCTIONS:

There are five switches located behind the front lens of the model DP-7600. The front
panel switches appear as shown below. The text located at the top half of each switch
(i.e., NORMAL, PEAK, RUNOUT, TARE, ABS/REL) indicates that particular
switch’s function when the unit is in data acquisition and display mode. The text locat­ed in the lower half (i.e., ENTER, UP, DOWN, NEXT, EXIT) indicates the switch’s func­tion during setup and calibration. A complete description of each switch is as follows:

1

Data Acquisition & Display

: Press to set the display mode for actual reading.

Setup & Calibration Modes

: Press to record a complete setting and advance to the next setup.

Data Acquisition & Display

: Press to set the display mode for peak.

Setup & Calibration Modes

: Press to increment the digit/parameter being set.

Data Acquisition & Display

: Press to set the display mode for runout.

Setup & Calibration Modes

: Press to decrement the digit/parameter being set.

Data Acquisition & Display

: Press to record the current reading as the tare value.

Setup & Calibration Modes

: Press to advance to the next digit to be set.

Data Acquisition & Display

: Press to toggle between absolute and relative reading mode.

Setup & Calibration Modes

: Press to exit the setup or calibration mode at any time (all prior

changes are saved).

2

LED INDICATORS:

Limit 1 Illuminates when the display reading exceeds the set limit,
and in the setup mode when establishing the limit.

Limit 2 Illuminates when the display reading exceeds the set limit,
and in the setup mode when establishing the limit.

Limit 3 Illuminates when the display reading exceeds the set limit,
and in the setup mode when establishing the limit.

Limit 4 Illuminates when the display reading exceeds the set limit,
and in the setup mode when establishing the limit.

Peak Illuminates when the display is set in the peak mode.

Runout Illuminates when the display is set in the runout mode.

Relative Illuminates when the display is set in the relative mode.

Setup Illuminates when the display is in the setup mode.

SETUP:

Meter setup is accomplished by using all five of the front panel switches. The setup
m

ode is entered by pressing the Normal [Enter] and Peak [Up] switches simultaneously.

will flash on the display for a second and the setup LED indicator will illu­minate. While in the setup mode, programming of the meter functions is accomplished
by setting individual digits of the various parameters (with the exception of baud rate
and decimal point programming). A flashing digit indicates that it is the active digit
being set. The flashing digit can be incremented by pressing the UP switch; conversely,
it can be decremented by pressing the DOWN switch. Once a particular digit has been
set to the desired value the NEXT switch can be pressed to advance to the next digit.
Once all the digits have been set to the proper value the ENTER switch can be pressed

3

to advance to the next parameter. At any time during the setup sequence the EXIT
switch can be pressed to leave the setup mode and save the current settings. If the
setup sequence is completed the unit will save all settings and automatically return to
data acquisition and display mode. If a meter setup is started, and a long period
(approximately 100 seconds) of inactivity is detected by the meter, the meter will
return to data acquisition and display mode without saving any new settings.

DISPLAY MODE

Upon entering the setup mode display will flash “d-node” then the unit will
go to one of the following display modes: CH1, CH2, Plus, Minus, Mult or Div. To
select a different mode press RUNOUT [down]. To enter selected display mode and to
go to the next setup option press NORMAL [ENTER].

Note: If no math functions are desired select CH1 or CH2. In normal operation mode:
pressing NORMAL [ENTER] will cycle between the two channels.

If any math function is selected then all math functions are available as well as CH1
and CH2. In normal operation mode: pressing NORMAL [ENTER] will cycle between

the two channels and all math functions.

LIMIT PROGRAMMING

All four limits are programmed in succession (1 through 4) immediately
after entering the setup mode. The corresponding LED illuminates to indicate which
limit is being programmed. All limits can be programmed to any number that is within
the display span (as determined by the meter calibration), and are activated when a
reading that exceeds the programmed limit number is detected.

LIMIT ONE DELAY

The limit one delay is a programmable delay, from 0 - 100 seconds, between
the time a reading exceeding the limit one number is detected and when the limit one
output will be activated. Using the delay feature, the limit one output can be tied to the
REMOTE RESET input on the rear of the unit to reset the peak reading so that the
next peak can be properly detected in a process sequence.

DECIMAL POINT POSITION

The calibration span number is displayed with the decimal point shown in its
selected position. The decimal point can be moved across the display to the desired
position using the UP and DOWN switches.

4

FILTER SETUP

The digital filter determines the rate at which the limits are checked for out­put activation, peak/runout tracking, and analog output updates. The digital filter is
programmable from 1 to 500Hz. When stability is more an issue than speed the filter
should be set closer to 1Hz; conversely, when quick detection and activation is more
important the filter should be set closer to 500Hz. Note: Unless the serial option is

installed, the setup sequence is now finished and the unit will return to acquisition
and display mode.

BAUD RATE SELECTION

Program the desired baud rate using the UP or DOWN switches to toggle
through the available settings (300, 600, 1200, 2400, 4800, 9600, 19200, and 38400).
Once the proper baud rate is selected press the ENTER switch to advance to the next
setup.

ECHO SETUP

The model DP-7600 can be programmed to automatically re-transmit (echo)
characters received on its serial communications input. A value of one enables the echo
feature; conversely, programming a zero will disable it.

LINEFEED SETUP

The unit can be programmed to transmit linefeed characters in addition to
the carriage return that is transmitted at the end of data strings. Programming a one
will enable transmission of linefeed characters, while programming a zero will prevent
their transmission.

UNIT ADDRESS SETUP

Multiple DP7600 units can be networked together on a serial bus using the
addressing capability of the unit. Each unit can have a unique address from 0 to 250
(Note: 0 disables the address feature since the unit will respond to all incoming com­mands/queries).

5