758 & 758SWeight Indicating Instrument

Operation Manual

8555-M021-O1 Rev I PO BOX 151 WEBB CITY, MO 64870 Printed in USA

10/00 PH 417-673-4631 FAX 417-673-5001

http://www.cardinalscale.com

INTRODUCTIONThank you for your purchase of our Cardinal758 Weight Indicating Instrument. It was builtwith Cardinal quality and reliability at ourfactory in Webb City, Missouri. This manualwill guide you through installation, operationand calibration of your indicator. Please read itthoroughly before attempting to install oroperate the weight indicator and keep it handyfor future reference.

FCC COMPLIANCE STATEMENTWARNING! This equipment generates, uses andcan radiate radio frequency and if not installed andused in accordance with the instruction manual,may cause interference to radio communications. Ithas been tested and found to comply with the limitsfor a Class A computing device pursuant toSubpart J of Part 15 of FCC rules, which aredesigned to provide reasonable protection againstsuch interference when operated in a commercialenvironment. Operation of this equipment in aresidential area may cause interference in whichcase the user will be responsible to take whatevermeasures necessary to correct the interference.

You may find the booklet "How to Identify and ResolveRadio TV Interference Problems" prepared by theFederal Communications Commission helpful. It isavailable from the U.S. Government Printing Office,Washington, D.C. 20402. Stock No. 001-000-00315-4.

All rights reserved. Reproduction or use, withoutexpressed written permission, of editorial or pictorialcontent, in any manner, is prohibited. No patent liabilityis assumed with respect to the use of the informationcontained herein. While every precaution has beentaken in the preparation of this manual, the Sellerassumes no responsibility for errors or omissions.Neither is any liability assumed for damages resultingfrom use of the information contained herein. Allinstructions and diagrams have been checked foraccuracy and ease of application; however, success andsafety in working with tools depend to a great extentupon the individual accuracy, skill and caution. For thisreason the Seller is not able to guarantee the result ofany procedure contained herein. Nor can they assumeresponsibility for any damage to property or injury topersons occasioned from the procedures. Personsengaging the procedures do so entirely at their own risk.

TABLE OF CONTENTSIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Load Cell Connection . . . . . . . . . . . . . . . . . . . 4

Serial I/O Connection . . . . . . . . . . . . . . . . . . . 5

Serial Interface Specifications . . . . . . . . . . . . . . . 5

Serial Data Formats . . . . . . . . . . . . . . . . . . . . . . . . 5

Setup and Calibration . . . . . . . . . . . . . . . . . . . . . . 7

Keypad Functions . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Annunciators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Error and Status Displays . . . . . . . . . . . . . . . . . . . 13

Before You Call For Service . . . . . . . . . . . . . . . . . 14

Care and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . 14

Calibration Seal Installation . . . . . . . . . . . . . . . . . 15

NEMA 4X Enclosure . . . . . . . . . . . . . . . . . . . . . . . 16

758 Parts Identification . . . . . . . . . . . . . . . . . . . . . 20

758S Parts Identification . . . . . . . . . . . . . . . . . . . . 21

LIST OF FIGURESFigure No. 1 . . . . 758 Mounting Bracket

Figure No. 2 . . . . Connector Identification

Figure No. 3 . . . . Battery Installation

Figure No. 4 . . . . Load Cell Connections

Figure No. 5 . . . PC Board Layout

Figure No. 6 . . . . Serial I/O Connections

Figure No. 7 . . . Calibration Jumper

Figure No. 8 . . . Keypad Layout

Figure No. 9 . . . Security Seal Installation

Figure No. 10 . . Security Seal (End view)

Figure No. 11 . . . NEMA 4X Gimbal MountingHole Layout

Figure No. 12 . . . Gland Connector Layout

Figure No. 13 . . . NEMA 4X Circuit Board Layout

Figure No. 14 . . . Terminal Block Connector

Figure No. 15 . . . Terminal Block Locations

Figure No. 16 . . . Cable Preparation

Figure No. 17 . . . (P6) AC Power Wiring

Figure No. 18 . . . NEMA 4X Security SealInstallation

Figure No. 19 . . . 758 Parts Identification

Figure No. 20 . . . 758S Parts Identification

1

SERIAL NUMBER __________________________

DATE OF PURCHASE ______________________

PURCHASED FROM _______________________

_________________________________________

_________________________________________

RETAIN THIS INFORMATION FOR FUTURE USE

PRECAUTIONSBefore using this instrument, read this manualand pay special attention to all "WARNING"symbols:

IMPORTANT

ELECTRICAL

WARNING

SPECIFICATIONS

Power Requirements . . . . . . . . . . . . . 115 VAC 50/60Hz (optional 230 VAC 50/60 Hz) powering a 12VDC 300 mA wall plug-in UL/CSA listed power supply or six (6) Ccell Alkaline, NICAD or NiMH batteries (not included).

Enclosure Size . . . . . . . . . . . . . . . . . . . 7 7/8" W x 4" H x 3" D (194 x 102 x 76mm)

Operating Temperature . . . . . . . . . . . 14º F (-10º C) to 104º F (+40º C)

Display . . . . . . . . . . . . . . . . . . . . . . . . . . Five digit, seven segment 0.7" high LCD

Sensitivity . . . . . . . . . . . . . . . . . . . . . . . 0.8 uV/division (0-3.3 mV/V), Class III

Signal Input Range . . . . . . . . . . . . . . . 0.2mV to 17mV max.

Transducer Excitation . . . . . . . . . . . . 5.2 VDC

Number of Load Cells . . . . . . . . . . . . up to 4 each 350Ω

Load Cell Cable Length . . . . . . . . . . 150' max.; 30' max w/o sense lines

Resolution . . . . . . . . . . . . . . . . . . . . . . . 5,000 divisions

Capacities . . . . . . . . . . . . . . . . . . . . . . . 1,000 to 5,000 divisions commercial up to 10,000 divisions noncommercial

Division Value . . . . . . . . . . . . . . . . . . . 1, 2 or 5 x 1, 0.1, 0.01, 0.001

Sample Rate . . . . . . . . . . . . . . . . . . . . 1 to 8 samples per second selectable

Auto Zero Range . . . . . . . . . . . . . . . . 0.5 or 1 through 9 divisions

Weighing Units . . . . . . . . . . . . . . . . . . Pounds, kilograms, ounces or grams

Keyboard . . . . . . . . . . . . . . . . . . . . . . . Membrane type with 4 keys

Standard Features:Metric ConversionRS-232 I/O Serial InterfaceSelectable baud rateAuto Shut-Off FeatureSelectable Sleep -ModeSelectable Filtering

INSTALLATION

Before beginning installation of your 758 weight indicator, make certain that the instrument hasbeen received in good condition. Carefully remove the instrument from the shipping carton andinspect it for any evidence of damage (such as exterior dents or scratches) that may have takenplace during shipment. Keep the carton and packing material for return shipment if it shouldbecome necessary. It is the responsibility of the purchaser to file all claims for any damages orloss incurred during transit, unless this responsibility has been accepted by the seller in itsproposal. Should your 758 come already installed on a scale, the following informationdescribing the installation of the instrument does not apply to you.

Begin the installation by deciding where the instrument is to be mounted. The 758 may comemounted on a column or you may choose to mount it on a desktop or wall. Refer to Figure No. 1for illustrations of the mounting brackets. Two (2) holes are located in the mounting bracket forattachment to the wall. This bracket may be removed or left in place for desktop use.

Regardless of how and where you mount your 758, it should be in a safe area where it will not bein the way of normal traffic. The location chosen should be free of temperature extremes andwater. It should be in a location where the display is easily viewed and is not subject to directsunlight. The indicator should be mounted such that it is within easy reach of the operator. If wallmounted, make certain that the structure and mounting bolts are of sufficient strength to supportthe 758. The mounting bracket should be securely fastened to the wall or column top so that itcannot break loose from the mounting surface. After the 758 has been mounted, it may beconnected to the plug-in power supply or the batteries may be installed.

2

MountingThe Model 758 Weight Indicating Instrument may be mounted on a desktop or other smooth, flat,horizontal surface or it may be mounted on a wall using two (2) #10 screws placed 6.00 inchesapart on the wall. Refer to Figure No. 1. All Input, Output and powerconnections to the Model 758are made at the rear panel ofthe instrument. Connectionsfor the Load Cell input andthe RS-232 Serial I/0 are allmade via 9 pin "D" shapedsubminiature connectors.The 12VDC 300 mA wallplug-in UL/CSA listed powersupply is connected using apower jack. Figure No. 2 illustrates the layout of therear connector panel.

Figure No. 2

BatteriesThe 758 can use six (6) "C" size Alkaline, Ni-Cad or Nimh batteries (not included). If you wish tooperate the 758 from batteries, you must first obtain and install batteries before operations canbegin. The batteries are contained in a battery holder inside the instrument. Access is via aremovable panel on the back of the indicator.

All six (6) batteries must be of the same type. They must all be Alkaline, allNi-Cad or all NiMH. DO NOT mix Alkaline and Ni-Cad or NiMH batteries. DO NOTconnect the plug-in power supply with batteries installed in the instrument!

3

+

-

-

+

Figure No. 3

6.00"

Figure No. 1

+12 VDC LOAD CELL SERIAL

(-) (+) GROUND LUG

Batteries, Cont.To install the batteries, turn the indicator so that the display is facing down (away from you) andresting on the keypad. Locate the rectangular panel on the back of the indicator and remove thetwo (2) screws retaining it (see Figure 3). Remove the panel (lift straight up and slide it out fromunder the end cap) exposing the battery holder. Install six (6) "C" size batteries in the holder,making certain that they are positioned in accordance with the polarity markings located in thebattery holder. Refer to Figure No. 3 for illustration of battery installation.

After placing all six (6) of the batteries in the holder, replace the panel on the back of the 758(slide under the end cap) and install the two (2) screws. Make sure the wall plug-in power supplyis unplugged, then turn the indicator over (display facing up) and press the ON | OFF key. If thedisplay turns on, the batteries have been installed correctly. If not, remove the panel and checkfor one (1) or more improperly positioned batteries.

The 758 does not have a battery charging circuit. Should you wish to use Ni-Cador NiMH batteries, they must be fully charged before installing. Whendischarged, the Ni-Cad or NiMH batteries must be removed and placed in anexternal charger to recharge. DO NOT connect the plug-in power supply withbatteries installed in the instrument!

Load Cell ConnectionThe load cell cable connects to the 758 via a 9-pin "D" connector on the rear panel of theindicator. Figure No. 4 shows the pin identification for the load cell connector. Make certain thatthe pins are correctly identified before soldering a wire to them.

If you use load cells with sense leads (6 wire load cells) in your installation, jumpers J2 and J3,located on the printed circuit board (see Figure No. 5) should be disconnected or placed on onepin only. If you do not use load cells with sense leads (4 wire load cells), jumpers J2 and J3must be installed on the printed circuit board (refer to Figure No. 5), for proper operation.

Make certain that the connector retainingscrews are used to hold the load cell cableconnector securely to the rear panel.

PIN NO. FUNCTION 1 +EXCITATION 9 +SENSE 7 +SIGNAL 2 -SIGNAL 4 -SENSE 6 -EXCITATION 5 SHIELD

Mating Connector Information

DESCRIPTION ITEM Cardinal Part #CONNECTOR DE9-P 6610-2379CONNECTOR SHELL C883010001 6610-1131

Load Cell Connection With Over 30 Feet Of CableFor installations with over 30' of cable between the indicator and the load cells, sense wiresshould be used. The sense wires must be connected between the +SENS and the -SENSterminals on the indicator and the +EXCITATION and the -EXCITATION wires of the load cells orthe +SENS and -SENS terminals of the load cell trim board or the section seal trim board. Forthe indicator to utilize the sense wires, the +SENS jumper J2 and the -SENS jumper J3 must beopen (see Figure No. 5).

4

LOAD CELL

12

4 235

7 69 8

Figure No. 4

PC Board Layout

Figure No. 5 - Main PCB

NOTE: P1, P2, P3, J2 and J3 are on solder side of board.

Serial I/0 ConnectionYour Model 758 has a RS-232 serial port that may be connected to a printer to record weight andassociated data or it may be connected to a remote display (like the SB-80) or to a computer fortransmission of weight data. The weight data may be transmitted on demand (pressing thePRINT key or on receipt of a command from the computer) or continuously. Figure No. 6 showsthe Serial I/0 connector along with the identity of the pins used.

PIN NO. FUNCTION 2 DATA INPUT (RXD) 3 DATA OUTPUT (TXD) 5 SIGNAL GR OUND (GND) 7 REQUEST TO SEND (RTS) 8 CLEAR TO SEND (CTS)

SERIAL INTERFACE SPECIFICATIONS

The 758 RS-232 serial interface can be configured during the setup and calibration procedure orduring the setup review operation. Using either method, it is possible to select the operation ofthe serial interface as well as select the baud rate.

The baud rates supported are: 1200, 2400, 4800, 9600 and 19.2K baud. The data format is fixed at 8 bits, No parity, and 1 stop bit. The indicators are shipped from the factory with the baud rate set to 9600 baud.

The serial interface can be configured to operate with a printer, remote display (SB-80) or acomputer. The mode of operation is made during the setup and calibration of the instrument.Refer to the applicable section of this manual for detailed information.

When configured for a printer, weight data is sent when the PRINT key is pressed or the 758 cansend data on receipt of a command from the computer. If configured for a remote display, weightdata is sent continuously.

5

12

4 235

7 69 8

SERIAL

Figure No. 6

SERIAL DATA FORMATS

Printer Data FormatIf the Printer Continuous output was not selected, PC=0 PC=0 (0=NO) during setup and calibration ofthe instrument, pressing the PRINT key will cause the 758 to transmit weight data to a printer.The transmitted data will be gross weight only and will include the units of measure. The dataformat for this operation is as follows:

Gross Weight PXXXXX^lb^G CRLF

where:P = Polarity (space if positive, - if negative)

XXXXX = Five (5) numeric digits of weight with decimal point if required and leading zeros suppressed

^ = Space (hex 20)lb = ASCII letters "I" and "b" to identify weighing units as poundskg = ASCII letters "k" and "g" to identify weighing units as kilogramsoz = ASCII letters "o" and "z" to identify weighing units as ounces^g = Space (hex 20) and ASCII letter "g" to identify weighing units as gramsG = ASCII letter "G" for Gross weightCRLF = Carriage Return and Line Feed commands (can be CR only if selected

during the setup and calibration of the 758)

Weight-On-DemandIf the Printer Continuous output was not selected, PC=0 PC=0 (0=NO) during setup and calibration ofthe instrument, and the 758 is connected to a computer, it will transmit a single set of weight dataeach time the computer sends an ENQ (hex 05). This is known as Weight-On-Demand. Anexample and explanation of the data format transmitted is shown below.

Continuous OutputIf the Printer Continuous output was selected PC=1 PC=1 (1=YES) during setup and calibration, the758 will transmit weight data continuously. If connected to a remote display, the display willcontinuously show weight data. An example and explanation of the data format transmitted isshown below.

Weight-On-Demand and Continuous Output Data Format ExampleThe data format transmitted for both Weight-On-Demand and Continuous Output will be GROSSweight only. The weight data always includes the units of measure. An example of the dataoutput (with and without a decimal point) is shown below:

Pxxxxx^UU^M^SS^CR (no decimal point in weight display)PxxxxxD^UU^M^SS^CR (decimal point in weight display)

where:P - polarity (space if positive, - if negative)xxxxx - weight with leading spaces^ - spaceD - decimal point (embedded where necessary)UU - units, upper case (LB, KG, OZ, ^G)M - mode, upper case (G=gross)SS - status, upper case (CZ=center-of-zero, MO=motion,

BZ=below zero and OC=over capacity)CR - carriage return (hex OD)

6

SETUP AND CALIBRATION

Your 758 indicator has been thoroughly tested and calibrated before being shipped to you. If youreceive the indicator attached to a scale, calibration is not necessary. If the 758 is beingconnected to a scale for the first time or recalibration is necessary for other reasons, proceed asindicated.

Calibration of the 758 Weight Indicating Instrument isaccomplished entirely by the keypad. To enter thesetup and calibration mode, the calibration jumper (J1),must be removed before turning on the indicator. Togain access to the calibration jumper, first remove theinstrument from the gimbal mounting by removing thetwo large knobs and sliding the enclosure from thebracket. Remove the two (2) screws from the left endcap (as viewed from the indicator front) and remove theend cap.

Locate the calibration jumper J1 on the circuit boardand remove it. See Figure No. 7. With the calibrationjumper removed, press the ON / OFF key. The displaywill show intint=. The 758 is now ready for setup and calibration.

During the setup and calibration process it will be necessary to enter operational parameters via the 758's keyboard. Pressing the PRINT key will cause the data entered or displayed to beretained and the 758 will advance to the next prompt. The cursor location is identified by theblinking character and can be advanced to the right to the next position by pressing the UNITSkey. Pressing the ZERO key will change the blinking character to the next value.

Scale IntervalWith the display showing int=int= press the UNITS key to show the current setting. Press the ZEROkey until the proper scale interval (1, 2 or 5) is displayed, then press the PRINT key to store thedisplayed value and proceed to the next prompt.

Decimal Point LocationWith the display showing dP=dP= press the UNITS key to show the current setting. Press the ZEROkey until the number corresponding to the desired decimal point position is displayed. Press thePRINT key to store this setting and proceed to the next step.

0 = XXXXX 1 = XXXX.X 2 = XXX.XX 3 =X X.XXX

Scale CapacityWith the display showing CAP=CAP= press the UNITS key to show the current setting. Press theZERO key to enter the proper digit at the blinking location. Press the UNITS key to step to theright and the next digit location. Repeat the process until all five (5) digits of the capacity havebeen entered. Should you make a mistake and press the UNITS key with an incorrect digitentered, it will be necessary to press the UNITS key until the blinking character returns to theproper location, then use the ZERO key to enter the correct digit. After all digits have beencorrectly entered, press the PRINT key to store the capacity and advance to the next step.

Weighing UnitsWith the display showing Unt=Unt= press the UNITS key to show the current setting. If the valueshown is acceptable, press the PRINT key again to save it, otherwise press the ZERO key toenter the new weighing units and press the PRINT key to save the new setting.

1 = Pounds Only 4=Kilograms/Pounds2 = Kilograms Only 5=Ounces Only3 = Pounds/Kilograms 6=Grams Only

7

J1

CalibrationJumper

Figure No. 7

SETUP AND CALIBRATION, Cont.

If the scale has been previously calibrated and you do not wish to change thecalibration setting, simply press the PRINT key twice and the internal calibrationfactor will be retained and you will proceed to the Zero Tracking Range.

Load Calibration WeightThe display will now indicate Load=Load= which is a prompt for the entry of the calibration weightvalue and placement of this amount of test weights on the scale platform.

1 . Make certain the scale platform is empty and free of debris, then place the desiredamount of calibrated test weights on the scale platform. It is recommended that aminimum of 50% of the scale's capacity be used but 70% to 100% is preferred.

2. Press the PRINT key.

3. Determine the exact amount of test weights to be placed on the scale platform and enterthis value into the 758 by using the ZERO and UNITS keys in the same manner used toenter the scale's capacity. Verify that the numbers entered are the same as the totalweight of test weights, and the least significant digit agrees with the scale interval.

4. Press the PRINT key.

After a moment the display will indicate the message unLoAdunLoAd which is a request that the testweights be removed from the scale platform. Remove the weights then press the PRINT key.The calculated calibration factor is now stored in the 758's nonvolatile memory.

Zero Tracking RangeThe display will now indicate trA=trA=. Press the UNITS key to show the value assigned to theAutomatic Zero Tracking Range. This is the value in scale divisions that will be automaticallyzeroed off. For example, if the scale divisions are 0.5 and the zero tracking is set to 3, the 758will automatically zero weights of 1.5 or less. Values of one (1) through nine (9) divisions areavailable for the zero tracking range, or select ten (10) if 0.5 division zero tracking range isdesired. Entry of two (2) zeros (00) will disable the zero tracking feature. Use the ZERO key tostep through these available values. Once the proper value is shown press the PRINT key tostore the value.

Four Percent Zero Tracking Range LimitThe display will next indicate trL=trL=. This is the prompt to select whether a 4% limit be placed onthe zero tracking and the push button zero. Press the UNITS key to show current setting, thenpress the ZERO key to select 1 (1=YES, enable) or 0 (0=NO, disable). If enabled (1), the zerotracking and the push button zero is limited to 4 % of the scale capacity. If disabled (0), zerotracking and the push button zero will operate up to the full capacity of the scale. Press thePRINT key to save the setting.

Digital Filter Level SelectionThe display will now show FLt=FLt= which is the prompt for the selection of the digital filtering level.Your 758 will arrive with the factory filter setting (1=minimal) already entered. Please check withyour scale service technician should you wish to change the programmed filter level and breakrange. Four (4) levels of filtering (0, 1, 2 and 3) are available. They are as follows:

0 = NO FILTERING 2 = MODERATE FILTERING1 = MINIMAL FILTERING 3 = CUSTOM FILTERING

NOTE: Three (3), custom filtering is used when zero (0), one (1) or two (2) are inadequate.

Press the UNITS key to show the current setting. Then press the ZERO key to select the desiredlevel of filtering. Press the PRINT key to save the setting.

8

SETUP AND CALIBRATION, Cont.

If you select 3, (Custom Filtering), the 758 will display F=F=. Press the UNITS key to show thecurrent setting for the filter level. The filter level is a number from 1 to 16 that corresponds to thelevel of filtering with 16 being the greatest filtering and 1 the least. Use the ZERO and UNITSkeys to select the filter level, then press the PRINT key to save the setting.

Next, the 758 will display br=br= . Press the UNITS key to show the current setting for the breakrange. The break range is a number from 1 to 64 that corresponds to the number of divisionchange to break out of filtering. Use the ZERO and UNITS keys to select the break range value,then press the PRINT key to save the setting.

Motion (Unstable) RangeThe display will now show Un5=Un5=. Press the UNITS key to show the current setting. Changes inweight exceeding the selected number of divisions will cause the STABLE weight annunciator toturn off. Values from zero (0) to nine (9) divisions may be selected by pressing the ZERO key.Once the correct value is shown press the PRINT key to save the setting.

Sample RateThe display will now show Sr=Sr=. Press the UNITS key to show the current setting. The samplerate may be set from a minimum of one (1) sample per second to a maximum of eight (8)samples per second in one (1) sample per second intervals. Press the ZERO key until thedesired sample rate is displayed. Press the PRINT key to save the setting.

Power Up ZeroWith the display showing PUO=PUO= press the UNITS key to show current setting, then press ZEROto select 1 (1=YES, enable) or 0 (0=NO, disable). Press the PRINT key to save the setting. If1=YES is selected, the weight display will be reset to zero automatically on power up. If 0=NO isselected, the weight display will not be reset to zero.

Automatic ShutoffThe display will now show ASH=ASH=. This Automatic Shutoff feature will automatically turn the 758off after a predetermined period of inactivity to prolong battery life. To turn the instrument backon you must press the ON / OFF key. Press the UNITS key to show the current setting. Use theZERO key to select the number (1 through 9) of minutes (time approximate) of inactivity beforeturning the 758 off. A zero (0) disables the Automatic Shutoff feature. Press the PRINT key tosave the setting. Note: This setting may be revised without having to enter the calibration mode.

Sleep ModeThe display will now show SLP=SLP=. The Sleep Mode feature also conserves battery power whenthe indicator remains unused for a selected period of time. With the feature enabled, the loadcell excitation will be reduced and the display will show SLEEPSLEEP. The Sleep feature requires thatthe indicator remain at the center of zero (0) to activate, unlike the Automatic Shutoff featurewhich only requires no motion to activate. Placing weight on the platform will activate theindicator and return it to the weight mode. Press the UNITS key to show the current setting. Toenable, use the ZERO key to select the number (1 to 9) of minutes (time approximate) ofinactivity at zero (0) before the indicator will enter the Sleep mode. Press the PRINT key to savethe setting. Enter a zero (0) to disable the Sleep mode. Note: This setting may be revisedwithout having to enter the calibration mode.

Baud Rate SelectionThe display will now show bAUdbAUd. Press the UNITS key to show the current setting. Ifacceptable, press the PRINT key to save it. Otherwise use the ZERO key to select the desiredbaud rate and press the PRINT key to save the setting. Note: The FACTORY setting is 4 (9600baud) and may be revised without having to enter the calibration mode. The following baud ratesare available:

1 = 1200 2= 2400 3 = 4800 4 = 9600 5 = 19,200

9

SETUP AND CALIBRATION, Cont.

Printer Continuous OutputThe display will now show PC=PC=. Press the UNITS key to view the current setting. If a 1 (1=YES)is displayed, the feature has been enabled and the 758 will send a continuous output of weightdata to the serial I/0 connector. If a 0 (0=NO) is displayed the data will only be transmitted whenthe PRINT key is pressed or on receipt of an ENQ command from a computer. Press the ZEROkey to change between 1 (YES) and 0 (NO). Once the proper setting is displayed, press thePRINT key to save the setting. Note: This setting may be revised without having to enter thecalibration mode.

Carriage Return/Line Feed SelectionThe display will now show CrLFCrLF. This feature determines if the data transmitted from the serial I/0 port (when the PRINT key is pressed) will be terminated with a carriage return and a line feedor a carriage return only. Press the UNITS key to view the current setting. If a 1 (1=ON) isdisplayed, the data will be terminated with a carriage return and a line feed. If a 0 (0=OFF) isdisplayed, the data will be terminated with a carriage return only. Press the ZERO key to changethe setting between 1 (YES) and 0 (NO). Once the proper setting is displayed, press the PRINTkey to save the setting. Note: This setting may be revised without having to enter the calibrationmode.

End-Of-Print Line FeedsThe display will now show EoP=EoP=. At the end of a data transmission to a printer, the 758 can senda number of line feed commands to space the paper in the printer to the desired position forwithdrawal or for the next print. Press the UNITS key to view the current setting. If the settingshown is acceptable, press the PRINT key to save it. Otherwise, use the ZERO and UNITS keysto select the desired number of line feeds (0 to 99). With the desired number displayed, pressthe PRINT key to save the setting. Note: This setting may be revised without having to enter thecalibration mode.

The indicator will display donEdonE. The setup and calibration process has been completed. Removethe power from the indicator, re-install the calibration jumper J1 and re-assemble for use.

SETUP REVIEW

The 758 allows several operational parameters to be reviewed and changed as necessarywithout having to enter the setup and calibration mode. The parameters in the setup review willbe processed in the following sequence:

POWER UP ZERO AUTOMATIC SHUTOFF TIME SLEEP MODE TIME BAUD RATE PRINTER CONTINUOUS OUTPUT CARRIAGE RETURN/LINE FEED SELECTION END-OF-PRINT LINE FEEDS

To enter the setup review mode, simply turn the 758 off then press and hold the PRINT key thenpress the ON key. The display will then prompt for entry of the power up zero feature PUO=PUO=.Refer to the instructions listed in the Setup and Calibration section of this manual for informationon how to change these parameters.

For a quick reference, the following chart shows a summary of the setup and calibration steps.

10

11

CAP=

Unt=

load=

i n t = Interval

LocationDecimal Point

0,1,2 or 3dp=

Scale Capacityup to 99,999

W e i g h i n g Units

Calibration Weight

unload

1,2 or 5

RemoveTest Weights

Press PRINT twice to bypassor once and enter test weightvalue and load scale.Press PRINT again.

t r l =

Filter Level1 to 16

CALIBRATION COMPLETE

Break Range 1 to 64

Motion Range 1 through 9

f l t =Filtering?0,1, 2 or 3

0 = No Filtering1 = Minimal

2 = Moderate3 = Custom

Sample Rate

Auto Shutoff 0=Disable1 to 9 Minutes

Sleep Mode 0=Disable1 to 9 Minutes

BAUD Rate

1=1200 2=24003=4800 4=9600

5=19,200

PrinterContinuous

Output

Carriage ReturnLine Feed

End-of-Print Line Feeds

b r =

Uns=

s r =

asH=

sLp=

PC=

C r l f

eop=

bAUd

done

4% ZeroTracking Limit1=Yes 0=No

F =

puo=Power Up

Zero

1 = lb only 2 = kg only 3 = lb / kg4 = kg / lb 5 = oz only 6 = grams only

tra=

Zero TrackingRange

1,2,3,4,5,6,7,8,9 or 10=(.5) 0 to disable

If Filtering=3 thenIf Filtering=0, 1 or 2 then

1 to 8

0 = XXXXX 2 = XXX.XX1 = XXXX.X 3 = XX.XXX

1. Press ON | OFF key to turn off.2. Remove calibration jumper J1.3. Press ON | OFF key to turn on.

SETUP and CALIBRATION, Cont.

KEYPAD FUNCTIONS

Figure No. 8

( I ) ON (O) OFF KEYWith the 758 off, pressing this key will apply power to the instrument and turn on the display. Ifthe 758 is already on, pressing this key will display OFF OFF and remove power from the instrument.

è¢ç ZEROThis key is used to reset the display to zero up to the selected limit of either 4% or 100% of thescale capacity. The zero limit is set during setup and calibration of the 758. It also used to stepthrough the available values during setup and calibration.

UNITSThis key is used to change the weighing units to the alternate units of measurement if selectedduring setup of the instrument (WEIGHTING UNITS = 3 or 4). For example, with poundsdisplayed (lb annunciator turned on) pressing this key will change the weighting units tokilograms (kg annunciator will turn on). NOTE: This feature must be enabled during setup andcalibration for this key to be operational. This key is also used to display the current settingduring setup and calibration.

¤¤ PRINTPressing this key will initiate the transmission of weight data via the serial I/O port unless thecontinous data output feature was enabled during setup and calibration or setup review. NOTE:If the continuous data output feature was selected, this key will be disabled. This key is alsoused to save the current setting during setup and calibration.

ANNUNCIATORS

The annunciators are turned on to indicate that the display is in the mode corresponding to theannunciator label or that the status indicated by the label is active.

è¢ç (ZERO)The è¢ç (ZERO) annunciator is located to the left of the weight display and is turned on toindicate that the weight is within +/- 1/4 division of the center of zero.

12

The membrane keyboard is not to be operated with pointed objects (pencils, pens,fingernails, etc). Damage to keyboard resulting from this practice will NOT becovered under warranty.

ANNUNCIATORS, Cont.

÷ÿ (STABLE)The ÷ÿ÷ÿ STABLE annunciator is located to the right of the weight display and is turned on whenthe weight display is stable. When off, it means that the change in successive weight samples isgreater than the motion limits selected during setup and calibration of the 758.

lbThe lb annunciator is located to the left of the weight display and is turned on to show that the displayed weight units is pounds.

kgThe kg annunciator is located to the left of the weight display and is used to indicate that thedisplayed units of weight measurement is kilograms.

ozThe oz annunciator is located to the right of the weight display and is turned on to show that the displayed weight units is ounces.

g The g (gram) annunciator is located to the right of the weight display and is used to indicatethat the displayed units of weight measurement is grams.

ERROR AND STATUS DISPLAYS

The 758 is equipped with a diagnostic software program that tests various portions of theinstrument's circuitry and verifies proper operation. Should a problem be detected, an error orstatus message will be displayed alerting the operator to that condition. The following lists theseerrors and status displays and their meaning:

Display Meaning

UNSUNS Motion is present when the 758 is attempting to perform one ofthe following operations:Power UpZero Weight Display

-oF--oF- Attempting to display a negative number greater than -9,999 ora positive number greater than 99,999.

O CapO Cap Scale weight exceeds scale capacity.

CALiBCALiB Indicates improper stored calibration data, calibration isnecessary.

a faila fail The analog to digital circuit has failed. Consult scaleserviceman.

Help aHelp a The microprocessor has stopped receiving the signal from theanalog circuit. To correct, remove the load from the scaleplatform and power the indicator off and back on.

trltrl Indicates an attempt to zero a weight outside the scale zerorange. (See Four Percent Zero Tracking Range Limit).

lo Batlo Bat This indicates the batteries are low. Replace if using alkalinebatteries or if using Ni-Cad or NiMH batteries, remove andrecharge.

13

BEFORE YOU CALL FOR SERVICE

The 758 has been designed to provide you with years of trouble-free operation. In spite of this,troubles sometimes happen. Before calling for service assistance you should make some initialchecks to verify that a problem does exist. The following describes several types of symptomsalong with suggested remedies.

Problem Possible SolutionsDisplay does not turn on Batteries discharged - replace if Alkaline or recharge if

NI-CAD or NiMH. Batteries not installed or not installedcorrectly. Is DC power supply cable plugged into 758? IsAC power adapter plugged into wall receptacle? Checkwall receptacle for proper AC power. Try anotherelectrical appliance in the same receptacle, does itwork? Check the circuit breaker. Has there been apower failure of any kind?

Incorrect weight displayed Has the instrument been calibrated? Insure that thescale platform isn't touching an adjacent object. Checkthe load cell connector wiring. If using four (4) wire loadcells, insure the sense lead jumpers (J2 & J3) areinstalled. Have proper operation procedures beenfollowed?

Indicator will not display Refer to Error and Status Display section and makeweight certain that the O CAP O CAP message is displayed. If so, and

scale is not loaded, perform the calibration sequence.

CARE AND CLEANING

1. DO NOT submerge indicator in water, pour or spray water directly on instrument.2. DO NOT use acetone, thinner or other volatile solvents for cleaning.3. DO NOT expose equipment to temperature extremes.4. DO NOT place equipment in front of heating/cooling vents.5. DO clean the indicator with a damp soft cloth and mild non-abrasive detergent.6. DO remove power before cleaning with a damp cloth.7. DO provide clean AC power and adequate protection against lightning damage.8. DO keep the surroundings clear to provide clean and adequate air circulation.

14

CALIBRATION SEAL INSTALLATION

If your Model 758 Weight Indicating Instrument is used in a commercial application it must betested and sealed by your local weights and measurement official. The 758 is designed to accepta lead and wire security seal to prevent unauthorized access to the calibration adjustments.Refer to the Figures No. 9 and 10 for details on the installation of the seal.

Figure No. 9

Bend tab over screwhead and secure withwire seal.

Figure No. 10

15

NEMA 4X ENCLOSURE

Installation InstructionsThe Model 758 in a NEMA 4X enclosure can bemounted on either a horizontal or verticalsurface. The enclosure is attached to the wallusing the gimbal stand. Refer to Figure No. 11for the hole layout for the gimbal stand.

First make certain that the location is free fromsudden changes in temperature and that themounting surface is strong enough to supportthe enclosure while being close enough toprovide the operator easy access to thekeyboard. Carefully lay out the mounting hole locations, then drill and install the anchor bolts.Attach the enclosure to the wall and securely tighten the retaining bolts.

Continue by removing the back cover on the instrument enclosure. Referring to Figure No. 12,remove all ten (10) retaining screws and set aside. Fully open the back cover of instrumentexposing the internal circuit boards. See Figure No. 13.

Figure No. 13

16

Figure No. 12

LoadRS-232

AC

SerialCellPower

Ground Lug

Figure No. 11 - NEMA 4XGimbal Stand Mounting Hole Layout

8.00"

Two (2) #10 screws shouldbe used for wall mounting

PowerSupply

MainBoard

PowerCable

Load CellConnection

SerialConnection

CalibrationSwitch

ACPowerConnection

Load CellCable

Please note, for ease of wiring, the terminalblocks can be removed from the matingconnector, then replaced after the wiring hasbeen completed. See Figure No. 14.

Figure No. 14

Voltage SelectionThe 758 in a NEMA 4X enclosure is shipped from the factory configured for 115 VAC 50/60 Hzoperation with a 1/10 ASB fuse installed and the Voltage Selection jumpers (J1) installed onpins 1 & 2 and 3 & 4. On installations requiring 230 VAC 50/60 Hz, a Voltage Selection jumpermust be moved to pins 2 & 3 on J1 and the 1/10 ASB fuse must be replaced with a 1/16 ASBfuse. (See Figure No. 15)

Figure No. 15

Load Cell Connection

CAUTION! Disconnect any external load cell power supply before connectingload cells to the instrument. Failure to do so, will result in permanent damage tothe instrument.

1. Loosen the cable gland connector for the load cell. This gland connector is located on theback of the enclosure. Refer to Figure No. 12 for an illustration of the gland connectorlayout.

2. Slip the single cable from the load cell or load cell junction boxthrough the gland connector and into the enclosure.

3. Remove 2" of the outer insulation jacket then remove 1/4" ofinsulation from each of the four (4) wires and shield without senseleads or six (6) wires and shield with sense leads (refer to FigureNo. 16).

4. Connect each of the wires to the terminal block for scale inputreferring to the labels on the circuit board for terminal connections.Refer to Figure No. 15 for terminal block locations.

5. To terminate, insert the wire into the opening then tighten the cageclamp screw locking the wire in place. Repeat the procedure untilall of the wires are in place.

17

1/4"2"

Figure No. 16

Fuse1/10 ASB (115V)1/16 ASB (230V)

ACPowerInput

J1 (Voltage Selection)

ScaleInput

RS-232Serial

RS-232 Serial Cable Installation1. Loosen the cable gland connector(s) for the RS-232 serial cable. The gland connector(s)

for the RS-232 serial data are located on the back of the enclosure. Refer to Figure No. 12for an illustration of the gland connector layout.

2. Slip the serial cable throught the gland connector and into the enclosure.

3. Remove 2" of the outer insulation jacket then remove 1/4" of insulation from each of thewires (refer to Figure No. 16).

4. Connect each of the wires to the RS-232 Serial Data terminal block referring to the labelson the circuit board for terminal connections. Refer to Figure No. 15 for terminal blocklocations.

5. To terminate, insert the wire into the opening then tighten the cage clamp screw, lockingthe wire in place. Repeat the procedure until all of the wires are in place.

AC Power Connection

It is the responsibility of the customer to have a qualified electrician install theproper power cord plug which conforms to the national electrical codes andlocal codes and ordinances.

Referring to Figure No. 12 for an illustration of the gland connector and conduit hole layout, usethe 1/2" conduit hole to bring the AC power into the enclosure. Use a seal-tite or rigid conduitfitting to make a water-tight connection. NOTE! 18AWG copper wire should be used to connectthe AC power to the instrument.

1. With the AC wiring in the enclosure, remove 1/4" ofinsulation from each of the wires (refer to Figure No. 16).

2. Connect each of the wires to the AC power terminal block(P6) referring to Figure No. 17, the color code wiring tablebelow and the labels on the circuit board for terminalconnections. Refer to Figure No. 15 for terminal blocklocations.

3. To terminate, remove the terminal block from the matingconnector, insert the wire into the opening, then tightenthe cage clamp screw, locking the wire in place.

4. Repeat the procedure until all of the wires are in place.

5. Reconnect the terminal block to the (P6) matingconnector.

6. Tighten all gland connectors, replace the rear panel and secure with the ten (10) screwsremoved earlier.

P6 WIRING COLOR CODE TABLE

U.S. Code International Code Function

Black Brown L1 (Hot)

White Blue L2 (Neutral)

Green Green/Yellow Ground

18

P6

L1

L2

Ground

PowerCord

Figure No. 17

IMPORTANT! Do not completely tighten the screws untill all neoprene washersare touching the surface rear panel. Follow a diagonal pattern when tighteningthe screws and neoprene washers. When completely tight, the neoprene washerwill protrude beyond the outside edge of the stainless steel part of the washer

SETUP AND CALIBRATION

Your 758 indicator in a NEMA 4X enclosure has been thoroughly tested and calibrated beforebeing shipped to you. If you receive the indicator attached to a scale, calibration is notnecessary. If the 758 is being connected to a scale for the first time or recalibration is necessaryfor other reasons, proceed as indicated.

The calibration switch is located on the enclosure rear panel. To gain access to this switch, firstremove the calibration access screw on the rear panel. (See Figure No. 18)

Once you have located the calibration switch, with a screwdriver or other tool inserted throughthe calibration switch access hole on the rear panel, press the push button calibration switch,then press ON / OFF and release. When intint= is displayed, release the push button switch. The758 is now ready for setup and calibration. Proceed with the calibration instructions on page 7.

CALIBRATION SEAL INSTALLATION

If your Model 758 Weight Indicating Instrument in the NEMA 4X enclosure is used in acommercial application it must be tested and sealed by your local weights and measurementofficial. The 758 NEMA 4X enclosure is designed to accept a lead and wire security seal toprevent unauthorized access to the calibration adjustments. Refer to the Figure No. 18 for detailson the installation of the seal.

19

Figure No. 18

Calibration Access Screw

Calibration Seal

758 PARTS IDENTIFICATION

ITEM PART NO. QTY DESCRIPTION

2 6013-0039 4 #6-32 HEX NUT

3 6013-0245 2 #4-40 HEX NUT

4 6021-0661 6 #6-32 X .25 SS PAN HEAD METAL SCREW

5 6021-0665 1 #6-32 X 3/8 PAN HEAD METAL SCREW

6 6540-0001 4 RUBBER FOOT

7 6540-1052 2 1.18 DIA. X .44 ENCLOSURE KNOB

8 6610-2000 4 JACK SOCKET

9 6610-5002 1 GROUND LUG

10 6610-5119 1 6 C-CELL BATTERY HOLDER

12 6680-0004 4 #6 ZP INT TOOTH LOCK WASHER

13 6680-0040 1 #6 ZP EXT TOOTH LOCK WASHER

14 6680-0052 4 #4 ZP LOCK WASHER

16 6680-0201 4 #6 X .5 SPACER (PCB)

17 6680-1006 4 #6 SS INT TOOTH LOCK WASHER

18 6680-1008 2 #10 X .155 SPACER

19 8530-B159-08 2 SEALING TAB

20 8539-B014-0A 1 LOAD CELL CABLE

21 8555-B014-0A 1 POWER CORD CABLE

22 8555-B015-08 1 ANALOG & SERIAL CABLE

23 8555-C143-0A 1 FRONT COVER

24 8555-C144-08 1 REAR PANEL

25 8555-C146-08 1 DISPLAY STAND

26 8555-C147-08 2 END CAP

27 8555-D001-08 1 KEYPAD

28 8555-D031-0A 1 MAIN PCB BOARD ASSEMBLY

not shown 8555-C107-08 1 758 INDICATOR VINYL COVER

20

21

27

23

16

18

16

25

19

267

4

1728

12 2

22

20

3 9513

2410

14

8

4

Figure No. 19

758S PARTS IDENTIFICATION

21

11

14

4

3

6

13

6

3

8

5

7

12

2

10

14

11

8

5

7

Figure No. 20

9

22

21

18

19 20 15

1716

758S PARTS IDENTIFICATION

ITEM PART NO. QTY DESCRIPTION

2 6013-0039 1 NUT HEX #6-32

3 6021-1142 9 SCW ROUND HEAD #10-32 x 0.625 RHMS

4 6021-1143 1 SCW FILLISTER #10-32 x .625 S.S.

5 6024-0083 2 WASHER FLAT 3/16 NEOPRENE, 70 DURO.

6 6024-1081 10 WASHER FLAT #10 NEOPRENE BACKING S.S.

7 6540-1004 4 RUBBER FOOT

8 6540-1053 2 ENCLOSURE KNOB 1.25 DIA., 10-32 INSERT

9 6650-0087 1 LABEL: MADE IN USA

10 6680-0004 1 WASHER LOCK INT. TOOTH #6 Z/P

11 6680-1008 2 SPACER #10 x .155

12 8555-D066-0A 1 ASSEMBLY: ENCLOSURE, REAR

13 8555-D067-0A 1 ASSEMBLY: ENCLOSURE, FRONT

14 8558-D010-08 1 GIMBAL FOR 708 / 758S

15 8555-C063-0A 1 BEZEL FOR 758S

16 8555-D031-1A 1 BOARD ASSEMBLY - 758 *17 8555-D055-08 1 758S KEYPAD

18 8555-B064-08 1 GASKET FOR 758S ENCLOSURE

19 8555-C050-0A 1 POWER SUPPLY BOARD ASSEMBLY *

20 8555-C060-0A 1 ENCLOSURE FRONT

21 8555-B053-0A 1 ASSEMBLY CABLE, CALIBRATION SWITCH

22 8555-B062-08 1 CALIBRATION SWITCH BRACKET

8555-B051-0A 1 POWER CABLE **8555-B052-0A 1 LOAD CELL CABLE **

¬ Refer to Figure No. 13 for a additional view of part location.

¬¬ Not shown in Figure No. 20. Refer to Figure No. 13 for part location.

22