9820 General Purpose Indicator
Contents
1. Apply no load to the strain gage transducer Depress MODE Depress Shifts Decimal pw Pt to the Right Depress Readout TARE Led displays 0000 turns on Depress Shifts Decimal Pt to the Left Depress RCAL Readout CAL Led Depress SES No Change amp W switch displays CAL turns on Depress MODE OPERATE mcerface ADVANCED FORCE MEASUREMENT 7401 E BUTHERUS DR SCOTTSDALE AZ 85260 TEL 480 948 5555 FAX 480 948 1924 www interfaceforce com2. If the instrument is in its operating mode S3 becomes an AUTO CAL switch CAUTION Depressing this switch will cause the instrument to recalibrate its full scale reading Be sure to read the CALIBRATION INSTRUCTIONS before using this switch Step Switch S4 This switch also serves two functions depending on the present status of S1 If the instrument is in the Mode Selection sequence this switch allows the user to cycle through the digits Used in conjunction with S2 and S3 it allows rapid updating of the Set Point Hysteresis and Cal values If the instrument is in the operating mode S4 recalls the max Hi and min Lo values RCAL Switch S5 This switch activates a reed relay which places a fixed resistor across Sig and Vexc for a positive RCAL reading or across Sig and Vexc for a negative RCAL reading Solder jumpers 4 and 5 determine which RCAL reading is generated Reference Figure 6 Front Panel Switch Disable Jumper Reference Figure 5 Jumper 1 when removed disables the CAL Switch 53 Jumper 2 when removed disables the MODE Switch 1 Page 7 FUNCTION DEFINITIONS Set Point High 1 SPH1 SPH1 is the present value being constantly compared with the displayed reading If the magnitude and sign of the reading exceeds the present SPH1 value the SPH1 relay will activate relay option assembly required and the front panel LED H1 will illuminate If the displayed reading equals the SPH1 va
3. 50V 1A 9 lt 50V 1A 50V 1A 50V 1A lt 50V 1A lt 50V 1A lt 50V 1A Maximum recommended load Figure 4 Relay Output and RS232 Wiring SPL2 Solder pad select for either normally open no or normally closed nc Factory set for no Page 4 Front Panel 53 CAL Switch Enable 10V Analog Out Zero Adjust Front Panel S1 MODE Switch Enable Transformer E A N w A 1234 lt 11 Baud Rate 5V Exc Gain 40 Gain 80 Spare Relay Output Vexc Adjust Option Connector 20mA Analog 4mA Analog 10V Analog Out Output Adjust Output Adjust FS Adjust Figure 5 Location of Jumpers and Adjustment Potentiometers Top View For RCAL to generate a Positive Output install solder jumper 5 as shown below For RCAL to generate a Negative Output remove solder jumper 5 and install solder jumper 4 NOTE DO NOT INSTALL SOLDER JUMPERS 4 be _ AND 5 THE SAME TIME 0 THIS WILL SHORT LOS OUT Vexc Solder jumpers shown 2 for 115VAC operation For 230VAC operation remove both 115VAC solder jumpers and add 1 solder jumper here Note For use with an external RCAL resistor remove internal RCAL resistor see Figure 5 Figure 6 Location of Jumper Bottom View Page 5 SWITCH AND FUNCTION DEFINITIONS SWITCH DEFINITIONS OO interface eG S1 S2 S3 S4 Mode Selection Switch S1 S
4. 1 is used to cycle through the various setpoints hysteresis and calibration values and decimal point locations The sequence is as follows The designators in parenthesis identify text that will be displayed momentarily followed by the value Set Point High 1 SPH1 Set Point Low 1 SPL1 Set Point High 2 SPH2 Set Point Low 2 SPL2 Hysteresis High HH Hysteresis Low HL Auto Cal CAL Decimal Point dP Exit While in the Mode Selection sequence the indicator is no longer monitoring the input signal To exit depress S1 once after the Decimal Point selection is completed Increment or Tare Switch S2 This switch serves two functions depending on the present status of S1 If the instrument is in the Mode Selection sequence this switch increments the flashing digit If the instrument is in its normal operating mode S2 becomes the TARE switch If the TARE LED located on the front panel is not illuminated depressing S2 once will automatically zero the readout and illuminate the TARE LED Depressing S2 again will UNTARE the readout and extinquish the TARE LED TARING is accomplished by storing the reading prior to TARING and subtracting this value from all subsequent readings Page 6 SWITCH DEFINITIONS CONT Decrement or Calibrate Switch S3 This switch serves two functions depending on the present status of 51 If the instrument is in the Mode Selection sequence this switch will decrement the flashing digit
5. INSTRUCTION MANUAL MODEL 9820 STRAIN GAGE TRANSDUCER INDICATOR CONTROLLER ats CAL Ha mMmcerface eee ADVANCED FORCE MEASUREMENT E BUTMERUS OF SCOTTSDALE BEBO Www nier tacs orte com Warranty and Repair Policy 1 Interface warrants that its instruments shall be free from defects in material and workmanship for one year under normal and proper use when correctly installed 2 Any Interface product which proves defective in material or in workmanship within one year from date of shipment by Interface will be repaired or replaced free of charge provided that 1 buyer provides Interface with satisfactory proof of the defect and that the product was properly installed maintained and operated within the limits of rated and normal usage 2 buyer obtains from Interface authorization to return the product and 3 products claimed to be defective must be returned with transportation charges prepaid Product will be returned to Buyer with transportation charges collect unless the item is found to be defective in which case Interface will pay the return transportation charges 3 The remedy set forth herein does not apply to damage to or defects in any product caused by the Buyer s misuse or neglect nor does it apply to any product which has been repaired or disassembled which in the sole judgement of Interface affects the performance of the product 4 Interface m
6. ON The Model 9820 enclosure is designated for panel mounting in a 1 8 DIN cutout The cutout dimensions are shown below Y 1 772 0 024 0 000 9 92 mm lt 3 622 lt 0 032 0 000 45 To panel mount the 9820 perform the following steps 1 Rotate the four pawl screws outside screws in each corner several turns counter clockwise to retract the pawls Make sure the pawls retract enough to clear the back of the mounting panel The pawls may be retracted to accomodate panel thicknesses up to 0 25 inches 6 35mm 2 Insert the instrument into the panel cutout 3 Position the pawls so that their elongated dimension overlaps the panel cutout then tighten the screws Do not over tighten 4 Installation complete WIRING Reference Figures 3 and 4 for TRANSDUCER and RELAY RS232 wiring information Power is applied with a 3 prong AC power cord The instrument is protected by a 250V 250mA fast acting 5mm fuse The fuse holder is an integral part of the input power connector A spare fuse is provided in the fuse holder Internal solder jumpers are provided to allow 115VAC or 230VAC operation Reference Figure 6 on page 5 Page 2 Pawl Screw Case Screw 1 of 4 outside screws 1 of 4 inside screws These 4 screws are used to mount These 4 screws hold the front panel the instrument in a panel to the instrument case OO interface Status LEDS See Status Definition Mode or Menu RCAL Switc
7. S Four front panel switches S1 S2 53 and S4 allow the user to program Set Point Hysteresis Calibration Number CAL and Decimal Points and to monitor minimum maximum or real time values OO interface S1 S2 53 S4 1 Depress MODE S1 switch once The text SPH1 followed by the current value of Set Point High 1 SPH1 will be displayed The system will idle in this condition until 53 S3 or S4 is depressed If S2 or S3 is depressed the most significant digit will be incremented S2 or decremented S3 Incrementing the most significant digit will display numbers from 9 to 9 Depressing S4 will select the next least significant digit position for updating The digit being updated will be flashing Using S2 S3 and S4 set Set Point High 1 to the desired value Page 10 PROGRAM INSTRUCTIONS CONT 2 Depress MODE 51 switch once The text SPL1 followed by the current value of Set Point Low 1 will be displayed Repeat Step 1 to set Set Point Low 1 to the desired value Depress MODE 51 switch once The text SPH2 followed by the current value of Set Point High 2 will be displayed Repeat Step 1 to set Set Point High 2 to the desired value Depress MODE 51 switch once The text SPL2 followed by the current value of Set Point Low 2 will be displayed Repeat Step 1 to set Set Point Low 2 to the desired value Depress MODE 51 switch once The text HH followed
8. akes no warranty concerning components not manufactured by it However in the event of the failure of any component or accessory not manufactured by Interface reasonable assistance will be given to Buyer in obtaining from the respective manufacturer whatever adjustment is reasonable based on the manufacturer s own warranty Interface expressly disclaims any liability to its customers dealers and representatives and to users of its products and to any other person for special or consequential damages of any kind and from any cause whatsoever arising out of or in any way connected with the manufacture sale handling repair maintenance or replacement arising out of or in anyway connected with the use of said products 5 Representations and warranties made by any person including dealers and representatives of Interface which are inconsistent or in conflict with the terms of this warranty including but not limited to the limitations of the liability of Interface as set forth above shall not be binding upon Interface unless reduced to writing and approved by an officer of Interface Inc THIS EXPRESS WARRANTY SUPERCEDES ANY AND ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE OBTAINING SERVICE UNDER WARRANTY Advance authorization is required before any product is returned to Interface Prior to the return of any product write or call the Repair Department at Inte
9. by the current value of Hysteresis High will be displayed Repeat Step 1 to set Hysteresis High to the desired value The maximum value for HH is 99 counts Depress MODE 51 switch once The text HL followed by the current value of Hysteresis Low will be displayed Repeat Step 1 to set Hysteresis Low to the desired value The maximum value for HL is 99 counts Depress MODE 51 switch once The text CAL followed by the current CAL number will be displayed Repeat Step 1 to set the CAL number The maximum CAL number is 99 999 Page 11 PROGRAM INSTRUCTIONS CONT 8 Depress MODE 51 switch once The text dP followed by the current decimal position will be shown flashing Increment S2 or decrement S3 the decimal point to the desired location 9 Depress MODE 51 switch once The instrument will exit the Mode Selection Sequence and enter the normal operating mode i e monitoring the input signal This is the end of the PROGRAM INSTRUCTIONS Page 12 CALIBRATION INSTRUCTIONS The Interface Model 9820 can be calibrated using 2 different methods 1 The first method uses actual or simulated ZERO and FULL SCALE FS inputs Actual inputs may come from a strain gage transducer loaded with calibrated weights Simulated inputs may come from a strain gage bridge simulator 2 The second method utilizes an RCAL resistor to simulate a load on a strain gage bridge The RCAL resistor is activated when the RCAL S5 s
10. erential amplifier and a 4 1 2 digit analog to digital converter combine to accurately digitize the input signal A5V 60mA or 10V 120mA short circuit protected transducer excitation supply is also provided A 10VDC analog output signal with a 2kHz bandwidth comes standard with the instrument A front panel RCAL switch provides a convenient calibration feature TARE and CALIBRATION are easily performed via front panel pushbuttons The 3 optional features provided are 1 4 relay setpoint outputs 2 Serial RS232 communications output 4 20mA analog output SPECIFICATIONS Excitation voltage Jumper selectable 5 or 10 Default VDC Excitation current 60mA 5VDC 120 10 Input amp gain Jumper selectable 40 or 80 Signal input range 25mV at Input amp gain 80 50mV at Input amp gain 40 Default Max internal counts 19 999 over signal input range Max display range 99 999 Sensitivity 1 25uV internal count at input amp gain 80 Conversion rate 2 5 samples second Filter 2 pole 10Hz low pass Nonlinearity 0 01 1 internal count Step Response 500ms CMRR 120dB 50 60Hz Input impedance 1000 megohm min Input bias current 10nA max Zero tempco 1uV degC typ Gain tempco 20ppm degC typ Operating range 10 to 50 degC Input Power 115 or 230 VAC solder pad jumper selectable Pkg dimensions 3 78W x 1 89H x 5 13D Page 1 INSTALLATION AND WIRING INSTALLATI
11. gt Vexc 4 P Sig Transducer 6 Vexc Sig 5 4 RCAL External RCAL 3 Apply power to the instrument NOTE If the instrument was previously calibrated and no new calibration is required do not proceed any further previous calibration information is stored in non volatile EEPROM and is ready for use when power to the instrument is reapplied Set the CAL NUMBER to the full scale value provided with the RCAL resistor Example If the RCAL resistor supplied with the instrument creates an output equivalent to 8096 of a full scale 500 pound load set the CAL NUMBER to 400 00 0400 0 or 00400 Page 15 CALIBRATION INSTRUCTIONS CONT 5 The TARE and CAL LED s on the front panel should be illuminated Depress the S2 switch once The TARE LED should extinquish The instrument should now display the UNTARED reading Depress the CAL S3 switch once Hold for 3 seconds The CAL LED should extinquish The instrument should now display the UNCALIBRATED reading 8 With no load on the transducer verify the readout is approximately zero Depress the TARE S2 switch once The TARE LED should illuminate and the readout should be ZERO 1 digit Depress and hold the RCAL switch The display should read a value greater than 01000 For optimum performance the readout should be closer to 19000 Ignore decimal point While holding down
12. h S5 Selection Switch S1 P Single Function Switch Single Function Switch Increment or Tare Selection Switch 2 Step or Min Max Recall Dual Function Switch Decrement or Calibrate Selection Switch S4 Selection Switch S3 Dual Function Switch Dual Function Switch Figure 1 Model 9820 Front Panel View Fuse Holder Setpoint Relay and RS232 Option Connector 250V 250mA 5mm fuse 15 pin Hi Density Female D Sub RELAY RS232 Line 50 60 Hz 115V 10A 00000000 TRANSDUCER Transducer Analog Output and RCAL Connector AC Power Connector 8 pin Male 1 5mm Terminal Strip Connector 3 prong grounded IEC connector Figure 2 Model 9820 Rear Panel View Page 3 1 J1 7 Vexc Transducer 4 Sig 6 1 Vexc 3 880 External RCAL 5 lt RCAL Analog Output 2 lt Analog Out 10V Standard 4 20mA Optional Analog Output Return 44 1 44846 Remote Tare Figure 3 Transducer Wiring 9 pin 25 pin Gnd gt 5 4 7 2 1 gi Gnd lt 3 lt gt 2 2 4 MN RXD DSR lt 6 gt 6 30 DTR DTR gt 4 lt 20 4 lt DSR RXD 2 3 gt 5 gt TXD lt 50V1A lt 6 com lt 50 1A c Le 50V 1A hs ne lt
13. lue nothing will happen If SPH1 is exceeded the readout must then drop below SPH1 less the Hysteresis High HH value before the relay deactivates and the H1 LED turns off Set Point Low 1 SPL1 SPL1 is another preset value being constantly compared with the displayed reading If the magnitude and sign of the displayed reading than the SPL1 present value the SPL1 relay will activate relay option assembly required and the front panel LED L1 will illuminate If the displayed reading equals the SPL1 value nothing will happen If the displayed reading drops below SPL1 it must then exceed SPL1 plus the Hysteresis Low HL value before the relay deactivates and the L1 LED turns off Set Point High 2 SPH2 5 2 is independent and functions identically to SPH1 SPH2 has its own relay contact outputs and front panel LED H2 Set Point Low 2 SPL2 SPL2 is independent and functions identically to SPL1 SPL2 has its own relay contact outputs and front panel LED L2 Hysteresis High HH HH is the hysteresis value for SPH1 and SPH2 The hysteresis value determines the number of counts the displayed reading must fall below SPH1 and SPH2 values before deactivating their respective relays and LEDs The maximum value of hysteresis is 99 counts while the minimum is counts Page 8 FUNCTION DEFINITIONS CONT Hysteresis Low HL HL is the hysteresis value for SPL1 and SPL2 The hysteresis value determines the n
14. ormat is described below 1 No parity bit 2 1 stop bit 3 8 data bits The data transmission sequence is described below 1 Sign plus or minus 1st word 2 Magnitude most significant digit MSD first 2nd thru eth word 3 Decimal point exponent 7th word 4 End of Line EOL Control Z 8th word Note Data is transmitted in ASCII characters The decimal position is t ttransmitted as a power of 10 exponent in ASCII Page 17 RS232 SERIAL COMMUNICATION OUTPUT CONT The decimal point as a power of 10 exponent is X XXXX ASCII ASCII XXX XX ASCII ASCII XXXXX ASCII The baud rate is set by jumpers Reference page 5 Figure 5 The baud rates are Jumpers Baud Rate 1234 me m Default Page 18 This page left intentionally blank Page 19 MODEL 9820 PROGRAM MENU DIAGRAM SETUP PROCEDURE CALIBRATION PROCEDURE USING ACTUAL OR SIMULATED LOADS START START Depress Depress Led MODE Depress Increments turns off Flashing Digit Depress Decrements Flashing Digit Depress Steps Flashing STEP Digit to Right set 5 1 Depress CAL Led Depress turns off MODE Depress Increments p w Flashing Digit Depress Decrements Flashing Digit Depress Steps Flashing STEP Digit to Right A
15. pply input signal for zero reading on display Set SPL1 Depress MODE Depress Increments Flashing Digit Depress Decrements e p Roadout ispl Set SPH2 Flashing Digit T displays 0000 turns on Depress Steps Flashing STEP Digit to Right Apply full scale Depress input signal MODE Depress Increments Flashing Digit Depress Decrements Depress Readout CAL Led set 2 We Flashing Digit displays CAL turns on Depress Steps Flashing STEP Digit to Right Depress MODE Depress __ Increments CALIBRATION PROCEDURE Flashing Digit USING RCAL RESISTOR Depress Decrements Flashing Digit START HH Depress Steps Flashing STEP Digit to Right 15 TARE ITARE Led Depress LED on turns off MODE Depress Increments Flashing Digit Depress Decrements Flashing Digit Depress Steps Flashing YES Depress CAL Led STEP Digit to Right turns off Depress O MODE Depress Increments Flashing Digit Depress Decrements Set CAL Flashing Digit Depress Steps Flashing STEP Digit to Right
16. press the TARE S2 switch once The TARE LED should illuminate and the readout should be ZERO 1 digit Apply the FULL SCALE load to the transducer If a strain gage simulator is used set it to the the desired mV V setting The instrument should display a value greater than 01000 For optimum performance the readout should be closer to 19000 Ignore decimal point Depress the CAL S3 switch once Hold for 3 seconds The CAL LED should turn on and the readout should display the CAL NUMBER 1 digit The CALIBRATION sequence is now complete NOTE Calibration values tare and slope values are maintained in non volatile memory and are updated every time CALIBRATION Steps 9 and 11 are performed TARING the display does not change the scale factor slope value calculated when Step 11 is completed S3 has a 3 second delay feature to prevent inadvertent loss of calibration Page 14 CALIBRATION INSTRUCTIONS CONT RCAL METHOD 1 Connect the strain gage transducer to the instrument using Figure 3 as areference Do not apply any load to the transducer Verify that either an internal or external RCAL resistor is provided with the instrument If an internal RCAL resistor is provided no installation is required Proceed to Step 3 If an external RCAL resistor is provided install it across pins 5 and 6 Positive Reading or pins 5 and 7 Negative Reading Verify internal RCAL resistor is removed 1 J1 7
17. rface advising them of 1 a part number 2 a serial number of the defective product 3 a technical description of the defect including specific test data written observations on the failure and specific corrective action required 4 a no charge purchase order number so the product can be returned to sender correctly and 5 ship and bill addresses Non verified problems or defects may be subject to an evaluation charge Please return the original calibration data with the unit REPAIR WARRANTY All repairs of Interface products are warranted for a period of 90 days from date of shipment This warranty applies only to those items which were found defective and repaired It does not apply to products in which no defect was found and returned as is or merely recalibrated Out of warranty products may not be capable of being TABLE OF CONTENTS DESCRIPTION and SPECIFICATIONS INSTALLATION and WIRING SWITCH and FUNCTION DEFINITIONS 6 OPERATING INSTRUCTIONS CALIBRATION INSTRUCTIONS OPTIONS FIGURES Figure 1 Model 9820 Front Panel View Figure 2Model 9820 Rear Panel View Figure 3 Transducer Wiring Figure 4Relay and RS232 Wiring Figure 5Location of Jumpers and Adjustment Potentiometers Figure 6Location of RCAL Jumper DESCRIPTION The Model 9820 is a microprocessor based digital indicator capable of interfacing directly to a low level strain gage load cell transducer An internal high gain fully diff
18. the RCAL switch depress the CAL S3 switch once The CAL LED should turn on and the readout should display the CAL NUMBER 1 digit The RCAL CALIBRATION sequence is now complete NOTES Calibration values tare and slope values are maintained in non volatile memory and are updated every time CALIBRATION Steps 9 and 10 are performed TARING the display does not change the scale factor slope value calculated when Step 10 is completed S3 has a 3 second delay feature to prevent the inadvertent loss of calibration Page 16 OPTIONS 4 20 mA ANALOG OUTPUT OPTION The 4 20mA analog output option replaces the 10VDC output It is therefore available on J1 pin 2 Reference page 4 Figure 3 Ithasa compliance voltage of 15VDC The output is normally 4mA at Signal Zero and factory adjusted to 20mA at Signal Full Scale RELAY OUTPUT OPTION The relay outputs are triggered by SPH1 SPL1 SPH2 and SPL2 Reference page 4 Figure 4 for wiring information The relays for SPL1 and SPL2 have only the normally open contact brought out to J1 The normally closed contact may be brought out instead if the appropriate solder jumper were installed For safety it is recommended that a voltage less than 50V and a current less than 1A be applied to any relay contact RS232 SERIAL COMMUNICATION OUTPUT The RS232 transmission is of the displayed reading and is transmitted once every display update if the DSR line is TRUE HIGH The data f
19. umber of counts the displayed reading must exceeed SPL1 and SPL2 values before deactivating their respective relays and LEDs The maximum value of hysteresis is 99 counts while the minimum is counts Auto Cal CAL This input allows the user to calibrate the full scale readout to any desired engineering units The CAL number is entered in the same way as the Set Point and Hysteresis values This input must be entered prior to performing the calibration The CAL number may be any number from 1 to 99 999 Zero is an invalid CAL number For best stability and performance keep the maximum CAL number below 19 999 counts Decimal Point dP dP allows selection of decimal point locations for display The locations selectable are XXX XX XXXx x and Min Max Recall HI LO The HI and LO values are the maximum and minimum values respectively of the displayed readings Sign and magnitude are constantly compared with the displayed readings at the instrument update rate The maximum value is initialized to 99 999 and the minimum value to 99 999 each time the TARE switch S2 is depressed whether to TARE or UNTARE the readout Page 9 OPERATING INSTRUCTIONS TURN ON INSTRUCTIONS Reference Figures 3 and 4 for proper input and output signal wiring 1 Apply power to the instrument 2 Verify the instrument readout blanks momentarily then displays the value of the input signal PROGRAM INSTRUCTION
20. witch is depressed Reference Figure 3 for location of S5 ACTUAL OR SIMULATED LOAD METHOD 1 Connect the strain gage transducer to the instrument using Figure 3 as a reference Do not apply any load to the transducer 2 Apply power to the instrument NOTE If the instrument was previously calibrated and no new calibration is required do not proceed any further previous calibration information is stored in non volatile and is ready for use when power to the instrument is reapplied 3 Calculate the CAL NUMBER by verifying the load that will be used to calibrate the full scale of the Model 9820 Example If a 500 pound load is used to calibrate full scale and the desired readout is 500 0 the CAL NUMBER will be 5000 The decimal point can be selected later If the desired readout is 500 then the CAL NUMBER will be 500 4 Program in the CAL NUMBER Reference PROGRAM INSTRUCTIONS Step 7 If the CAL NUMBER was previously programmed skip this step Page 13 CALIBRATION INSTRUCTIONS CONT 5 The TARE and CAL LED s on the front panel should be illuminated Depress the TARE S2 switch once The TARE LED should extinquish The instrument should now display the UNTARED reading Depress the CAL 53 switch once Hold for 3 seconds The CAL LED should extinquish The instrument should now display the UNCALIBRATED reading With no load on the transducer verify the instrument reading is low De
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