Omega Products CS7500 Installation Manual

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User’s Guide

CS7500 / CS7600

M-4382/1006

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It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that
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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.

TABLE OF CONTENTS

SPECIFICATIONS 2

UNPACKING AND STARTUP 3

OPERATIONAL FEATURES 5

MENU ACCESS 7

OPTION CONFIGURATION 9

MENU NAVIGATION 14

7600 MENU ENTRY 14

7500 MENU ENTRY 15

CAL 40, FILTER & CALIBRATION 16

CFG 50 COUNTING FUNCTIONS 17

CFG 60 RS232 CONFIGURATION 17

CAL 70 TIME AND DATE 18

CAL 80 FORMATED PRINT SLOT 18

CONTINUOUS OUTPUT PRINT CODES 19

COMMAND FORMATS 21

RS232 PIN ASSIGNMENTS 23

AVERAGE PIECE WEIGHT STORAGE 24

WEIGHING WITH/WITHOUT TARE 25

COUNTING 26

DISPLAY MESSAGES 32

STATUS CHARACTERS 33

115 TO 220 VAC CONVERSION 34

1

SPECIFICATIONS

LOAD CELL A/D CONVERTER

TYPE: 24 bit delta sigma
EXCITATION: 5 VDC, 120 mA max .
SIGNAL INPUT: 16 mv
SENSITIVITY: 0.1 uV/grad
UPDATE RATE: 30 update/second

DISPLAY: Six (6) Decades, 0.6 inch LED

INDICATORS: Gross, Tare, Net, Zero, Stable, Base, Units, Count .

POWER INPUT: 117/217 VAC, 50-60 HZ, 20 watts, fuse 0.25 A Slo-Blow.

SERIAL PORT: RS232C

COUNTING SCALE: Cast Aluminum, 14” (L) x 15.5” (W) x 5.25 (H); 15.25 lbs.

OPTIONS:

TIME & DATE: 12/24 hr, battery backed.

AC/DC: Battery backed (counting Scale).

REMOTE DISPLAY: Wall or post mount.

DUAL CHANNEL: Independent A/D converter.

2

Unpacking and Startup

Counting Scales:

After opening the shipping carton, remove the molded foam top from the carton. (On
2 lb. and 5 lb. capacity scales the platform is packaged on top of this foam, remove it
first and lay it aside.)

Gently lift and remove the stainless steel platform cover only.

Remove any options which may be packed with the scale.

Carefully remove scale from the packaging by grasping both sides of the base.
DO NOT LIFT SCALE BY THE TOP SPIDER OR SUB-PLATFORM ASSEMBLY.

Place the scale on a stable, level surface for operation.

Adjust the corner leveling feet until the level bubble indicates the unit is level. Firmly
tighten hex jam nuts on the leveling feet. (Any time the scale is relocated, it should be
leveled.)

Remove the protective plastic wrap from the platform and place the platform on the
spider.

To activate the scale, plug the line cord into any grounded 50/60 hertz 120 volt outlet.

3

Operational Features

Automatic Zero-Tracking (AZT) - Maintains the system zero and is normally set to +/-

1/4 of the display resolution.

Count/Weigh - Scale is capable of both counting and weighing functions. The count
may be turned off on the 7600 if not needed.

Four Selectable Sample Sizes - Four different sample sizes may be entered into the
scale memory during programming.

Counting Functions - A variety of different counting methods may be employed,
depending on type of counting selected during calibration.

Sample Update - Piece weight accuracy may be improved after the initial sample by
adding a quantity of parts between 10% and 100% of the original sample to the
platform. When this is done the scale will recalculate the piece weight, display the new
percent error/accuracy for 2 seconds and then return to the counting mode.

Second Base - An optional second base is available to expand the capacity of the
scale.

Peak/Hold – Captures the peak reading directly (based on filter settings) or after preset
number of “stable” readings.

Accumulation – Based on count or weight.

Counting Scale Connectors:

The following connectors may be accessed through the opening on the bottom of the
scale.

D-Subminiature Connector (9-pin) - Used with RS-232 Interface.

Remote Display Connector - Used to connect a remote display option to the scale.

REMOTE BASE CPC Style connector (8 pin) - Same as indicator wiring.

5

Operational Features

Push-Button Functions

ZERO Button - Sets the scale to zero.
UNITS Button - Used to switch the scale between the primary weighing unit,

secondary weighing unit, and the count mode.
PRINT Button - Transmits formatted print to any device connected to the RS-232
port. Holding this push-button for four seconds will access the RS-232 configuration
mode.

SAMPLE SET Button - Places the scale in the sample set mode for counting
operations. Hold to access setpoint targets when enabled.

7600 18-Key: Full Numeric + Enhanced Operation

GROSS/NET Button - Switches the scale display between Gross weight and Net

weight.
PIECE WEIGHT Button - Will cause the scale to display the presently stored piece
weight, if any, and puts it into the piece weight entry mode.
TARE Button - Will tare off any weight setting on the platform and enter it into the tare
memory.
KEYPAD TARE Button - Will display whatever tare is presently stored in the tare
memory and puts the scale into the keypad tare entry mode.
BASE Button - Used to switch the scale between base 1 and base 2, when the
second base option is installed.
% Button - Used to display the percent of error, or percent of accuracy. (Only if these
features have been selected during programming.)
ID Button - Will display whatever ID number is presently stored in the ID memory
and puts the scale into the ID entry mode.
CHECK Button - Pressing this button will cause the scale to initiate the diagnostic
countdown. It may also be used as a continue key if the scale should freeze on any of
the diagnostic numbers during countdown.
CLEAR Button - Used when the scale is in one of the data entry modes. Pressing this
button once will put a decimal point onto the display and pressing it a second time will
clear the display.
ENT Button - Used when the scale is in one of the data entry modes. Button is used
to enter information into the system memory.

6

Menu Access:

To access instrument configuration, calibration or to enable options, depress the “Zero”
key for five seconds.
The Audit Trail counters (“Pxxxx” and “Cxxxx”) are displayed first followed by access
code request (“AC?”). The initial factory setting is “0000” which is entered “AC0000” and
“Print”. If no entry is made, instrument returns to operate mode. Stepping the “Zero” key
when “AC?” is on, will display software version, display check and keypad test.

Configuration and Calibration

Key Functions

The 7500 4-Key access functions (------)

ZERO

(DP/Clear)

DP/Clear: Enters a decimal point or double push clears the display.
Increment: Scrolls selection of sub parameters or increments value for numeric entry.
Advance: Multiplies a numeric entry by “10”.
Enter: Stores entry and steps to the next parameter or exit.

The 7600 (18-Key) uses direct key entry.

The access code can be changed to any four digit combination when exiting setup and
display is “AC ?”, either input change and enter or use enter alone to exit.

SAMPLE

(Increment)

UNITS

(Advance)

PRINT
(Enter)

Front panel access is inhibited if conventional “sealing” is applied by
setting jumper J1-1 in the B position. The internal “CAL” button is
then used for access.

subsequent stepping of the button will select 7300, 7400, 7500, 7600, etc. Leave on
current model and allow time out to incorporate.

Holding the “CAL”, will display the current “7X00” and

7

Menu Layout:

CAL1

Options: Dual / Triple Range, Peak Hold, Remote Inputs,
Setpoints, UPS Worldship, Accumulate, Analog Output

CAL 10

Capacity, Auto Configuration, Initial Zero, Enable Count,
Enhance Mode

CAL 20

Capacity, Resolution, Zero Range, Units, Print, Overrange,
Zero Tracking

CAL 30

Secondary Resolution

CAL 40

Filter, Zero, Span

CFG50

Counting Functions, Sample Size, Switch Mode,
Percent Error, Auto Sample/Bulk, Negative Sample

CFG60

RS232 Configuration: Baud Rate, Word, Stop, Parity,
Echo, Address

CAL 70

Time & Date: 12/24 hr, AC/DC Sleep Set

CAL 80

Formatted Print Slot

CAL 200 Remote Display AC/DC only

8

Option Configuration (Cal 1):

Step Parameter Definition

bat 1 OFF, On

dtr 2 0……15

dtr High Res. Medium Res.

0 ---- --- ---- ---­1 50% X2 ---- ---­2 50% X5 ---- ---­3 25% X2 ---- ---­4 25% X5 ---- ---­5 20% X2 ---- ---­6 20% X5 ---- ---­7 20% X10 ---- ---­8 10% X2 ---- ----

9 10% X5 ---- ---­10 10% X10 ---- ---­11 25% X5 50% X2
12 10% X5 50% X2
13 25% X10 50% X2
14 10% X10 50% X2
15 1% X100 10% X10

Charger enabled/disabled
(AC/DC board only)

Dual/Triple Range (0 = off)

Step Parameter Definition

Peak/Hold function, zero key clears current

PHd 3 OFF, Peak-H, Hold

peak, tare function is disabled, print code 22
and 32 are modified to value and value with
labels (xx.xxx / Peak xx.xxx lb)

HdS 3.1 0……240

Hold after “samples”: Weight must be stable
for 0 – 240 samples to “hold”.

Remote inputs,(with DIO option) Input 1:

Rln 4 no, yes

Gross/net, Input 2: Tare, Input 3: Zero,
Input 4: Print
UPS WorldShip, Parameters 25, 60-69, 80 +

UPS 5 no, yes

are hidden, format:9600/odd/7/2,“39” outputs
the UPS format.

9

ACC 6 OFF, A-Cnt, Cnt, A-Prl, Prl

AOS 7 Gross, Net, Display

Zr 7.1 0.00

FS 7.2 Full-scale

Zr.A 7.3 Zero Cal Adjust

SP.A 7.4 Span Cal Adjust

INSTRUMENT CAL UP CAL DOWN

A-Cnt: Auto count accumulator
Cnt: Manual count accumulator
A-Pri: Auto primary units accumulator
Pri: Manual primary units accumulator

Sets the weight that the output represents:
Gross, Net, or Display.

Sets the value of weight that is equal to
4mA/0V.

Sets the value of weight that is equal to
20mA/10V.

Use the cal up/down keys (table II) to set the
output to as close to 4mA/0V that is
acceptable to one’s requirements.
Use the cal up/down keys (table II) to set the
output to as close to 20mA/10V that is
acceptable to one’s requirements.

7500 SAMPLE UNITS

7600 UNITS/4 PRINT/7

SPt 8

OFF, Tr, Prtr, drtr, drtk,
C tr, C Prtr, C drtr, C drtk

Out 8.1 CHG, dIO

dIO Relays as per SPt 8

CHG

tr : Target weight relay K1
Prtr : tr + Preact weight
Drtr : tr + Dribble weight relay K2
Drtk : tr + dr + Trickle weight relay K3
C tr : Target count relay K1
C Prtr : tr + Preact count
C drtr : tr + Dribble count relay K2
C drtk : tr + dr + Trickle count relay K3

CHG : Uses battery ckt to drive LED
dIO : Uses relay board, K1-3.

tr : LED on < tr, off > tr
Prtr : on < Pr, flashes <tr, off > tr
Drtr : on < dr, flashes <tr, off > tr
Drtk : on < dr, flashes fast < tk, slow < tr

10

r

Option Configuration Dual Channel:

P20
Sense Jumpers
Plus….. 1-2
Minus… 3-4

1 2

A

J1

B

EW-1000 Rev…..

Excitation +

Excitation –

P5

P20

Sense +

Sense -

Transformer

1 2
3 4

6 5 4 3 2 1 TB-20

EW -1000-CH2
A/D Converter

F1

Line
Filte

0.25A
SB

CAL/SEL

Signal +
Signal -

11