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MODEL WM WATTHOUR METER Installation

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1. Table 9 2 Spare Parts List Item Part Number Quantity Fuse 3 8A 250 V 041487 5 Fuse 3 4A 250 V 041486 5 Microprocessor Mother Board 040326 1 Analog Input Board 040178 1 Disconnect power to the system before servicing or replacing fuses Table 9 3 Software List NOTE Model WM Program diskette Item No 040545 is included with this product manual located in the pocket inside of back cover This diskette includes the software shown in the table below SOFTWARE TITLE PROGRAM NUMBER PROGRAM WM DATA ACQUISITION 58P107175 PROGRAM WM CALIBRATION amp SET UP 58P107177 2011 DynAmp LLC Page 30 040530 L Installation Operation and Service Manual WM Watthour Meter 10 DRAWING LIST The drawings listed below are to be considered as part of this manual The drawings appear in the order shown Table 10 1 Drawing List DRAWING TITLE DRAWING NUMBER Line Cord Selection Form 09A040570 Schematic System WM Watthour Meter 05D107172 Schematic WM Watthour Meter Motherboard 05D107136 Assembly WM Watthour Meter Motherboard 75B108756 Schematic WM Watthour Isolated Input 26B107125 Assembly WM Watthour Isolated Input 75B108661 Outline And Mounting WM Watthour Meter 02C107171 2011 DynAmp LLC Page 31 040530 L Installation Operation and Service Manual WM Watthour Meter This Page is Intentionally Blank 2011 DynAmp LLC Page 32 040530 L
2. To install the unit connections should be made as follows Check the line voltage indicated on the WM Watthour Meter scaling label Check the line voltage shown by the WM s power entry module voltage selector If the voltage indicated is not the proper line voltage for your location see Line Voltage Selection Connect power 100Vac 120 Vac 220Vac or 240 Vac 47 to 63 Hz to the input power module using the supplied line cord 2011 DynAmp LLC Page 11 040530 L Installation Operation and Service Manual WM Watthour Meter NOTE The line cord supplied has been selected for the particular country in which the Wattmeter will be used This information must accompany all Wattmeter orders The proper line cord should have been selected from the line cord selection reference drawing in the rear of this manual If the incorrect line cord has been supplied refer to this drawing to select the proper cord Connect the voltage input signal to terminals 1 and 2 Connect the current input signal to terminals 4 and 5 This signal is a voltage based on and only proportional to the input current If applicable connect a suitable electro mechanical counter to terminals 7 and 8 If applicable connect the analog Watts output terminals 9 and 10 to a remote recorder monitoring device 5 7 RS 232 SERIAL PORT A 25 pin RS 232 connector J4 is provided on the rear panel of the WM Watthour meter
3. Installation Operation and Service Manual WM Watthour Meter APPENDIX A GLOSSARY OF TERMS ampere A A unit of electric current flow equivalent to the motion of 1 coulomb of charge 6 28 x 10 electrons per second through any cross section analog to digital converter A D A device or circuit that converts an analog quantity into digital units such as binary bits American Wire Gauge AWG The standard American method of designating wire sizes The smaller the gauge the larger the wire size 0000 AWG equals 460 mils diameter and 40 AWG equals 3 145 mils diameter binary coded decimal BCD A system in which each digit of a decimal number is represented by its binary equivalent For instance decimal 327 equals 0011 0010 0111 in BCD notation in pure binary notation the number would be 101 000 111 digital to analog convertor D A or DAC A device or circuit that converts digital units into an analog quantity erasable programmable A PROM that can be erased by exposure to ultraviolet light EPROM read only memory hertz Hz The unit of measurement for frequency 1 Hz equals one cycle per second integrated circuit IC A chip of semiconductor material in which components and wires are created by processing distinct areas of the material usually silicon kiloampere kA See ampere 1 kA equals 1000 amperes k designates 10 power kilovolt kV See volt 1 kV equals 1000 volts k designates 10 pow
4. Update warranty and move Hazard Warnings Safety update to current format Update drawing list and drawings Update drawing list and remove Section Ordering Information Update to DynAmp Update fuse precautions per ECR 1304 ECR 1532 Table 6 1 Data Record Format PAR 10245 Handling A Storage ECR 1440 Calibration Intervals New Manual Format ECR 1440 Calibration Intervals inserted Date 9 94 10 94 04 95 05 95 10 95 11 96 8 97 3 01 06 02 11 03 11 04 07 06 12 09 05 11 Page ix Installation Operation and Service Manual WM Watthour Meter This Page is Intentionally Blank 2011 DynAmp LLC Page x 040530 M Installation Operation and Service Manual WM Watthour Meter TABLE OF CONTENTS Par Title Page 1 SAFETY 1 1 1 OVERVIEW 2 HANDLING AND STORAGE 3 3 DESCRIPTION 5 3 1 OVERVIEW 4 SPECIFICATIONS 7 5 INSTALLATION 11 5 1 ENVIRONMENTAL CONSIDERATIONS AAA 11 5 2 TEMPERATURE gtt eigene EEN 11 5 3 CONTAMINA TION WEE 11 5 4 ELECTRICAL ISOLATION ncnian a aade aaa apia didunia kE dna 11 5 5 MOUNTING CONSIDERATIONS eiert 11 5 6 WIRING AND INITIAL SETUP wis ctcrscntcadeniaectsaheatiacadielaigeciatearacsaeeieeurebaiiensaiiens 11 E SERIAL PORT hrepeni eiye aR p eaa raae eE a arganit 12 6 OPERATION 13 6 1 GENERAL OPERATING INSTRUCTIONS AAA 13 6 2 VOLTAGE AND CURRENT OVER RANGE INDICATIONS AA 13 6 3 POWER OVER RANGE INDIGATION seeessseesesesrserirssrnnsr
5. Watthour readings will be recorded once per shift once per day etc Counter Reset Determine when the remote Watthour counter is to be reset at the beginning of each shift each day etc Power Loss Contingency Establish a means of determining measurement uncertainty for a known period of WM Watthour meter turn off or power loss The WM Watthour meter will not continue to log Watthours when the Watthour meter is off The significance of the power off time can only be assessed by considering the overall time period that the energy in Watt hours is to be reviewed 2011 DynAmp LLC Page 14 040530 L Installation Operation and Service Manual WM Watthour Meter For example in an eight hour shift WM Watthour meter power off periods will introduce errors noted if not accounted for in the log time period Watthour meter work shift maximum de energized 4 length X 100 error minutes minutes percent 0 50 480 x 100 0 1 1 00 480 x 100 0 2 5 00 480 x 100 1 0 The percent error calculated above assumes conditions of full scale voltage and current inputs These conditions would produce the maximum error due to power loss or accidental turn off of WM Watthour meter Accidental Restart Contingency The WM Watthour meter s front panel restart switch is surrounded by a cylindrical switch guard to minimize the possibility of accidental restart of the Watthour count If an accidental restart of the
6. and insert short style fuses in fuseholder Use a small pair of needle nose pliers to gently remove the voltage selector pc board and selector indicator from the power entry module Observe the imprinted line voltage options and adjacent imprinted arrow on the voltage selector pc board The line voltage to be selected and adjacent arrow will be oriented toward the inside of the power entry module The white plastic indicator will be oriented 180 opposite toward the outside face of the power entry module Adjust the white plastic voltage selection pointer to the appropriate position Gently replace the voltage selector pc board in the power entry module so that the arrow on the white plastic voltage selector points to the arrow on the power entry module The white plastic indicator should face out Gently replace the fuse holder cover The indicator should point to the desired line voltage 2011 DynAmp LLC Page 27 040530 L Installation Operation and Service Manual WM Watthour Meter 9 4 BASIC TROUBLESHOOTING If problems arise refer to the table below as an initial step Table 9 1 Troubleshooting Table Symptom Possible cause A single dash appears in upper left corner Loose or disconnected harness from Isolator pc of display remaining display blank board to display pc board Displayed values do not change output Isolator connector P11 loose or disconnected does not track input Displayed voltage 0 00
7. located on the rear panel power entry module and a RESTART switch located on front panel Model WM Watthour meter provides several outputs The voltage current and Watt values displayed on front panel fluorescent indicator are the average of the most recent 32 samples The display readings are updated approximately every 250mSec Rear panel outputs include an analog voltage proportional to power Watts suitable for driving a remote analog recorder Individual measured values of voltage current and power Watts are available in digital form via the RS 232 serial port An additional parameter elapsed time since counter restart is output with the serial data A pulse output whose frequency is proportional to Watthours is also available to drive a remote electrical or mechanical counter optional The optional counter then will provide an external Watthour readout The counter output is driven by the microprocessor which is programmed to the full scale count rate per hour specified by the user The counter may be panel mounted anywhere within 100 feet of the WM Watthour meter A diskette called Model WM Watthour Meter Setup amp Data Acquisition Item No 040545 is located in a pocket on the inside back cover of this product manual This 3 5 1 44MB IBM compatible disk includes software to scale and calibrate Model WM In addition the disk includes executable EXE and C language source code for a typical data acquisition software ap
8. the rules and requirements provided in this manual GENERAL This equipment is designed to be connected to hazardous electric voltages Ignoring the installation precautions and warnings can result in severe personal injury or equipment damage To avoid the risk of electrical shock or fire the safety instructions and guidelines in this manual must be followed The electrical specifications must not be exceeded and the unit must be installed according to directions provided HAZARDOUS VOLTAGE This equipment is intended for indoor use only It should be mounted in a well ventilated area away from high heat dust and corrosive atmosphere The ambient temperature must not exceed 55 C For mounting considerations that fall outside the recommended specifications provided in this manual the factory should be contacted for approval INSTALLATION This unit is rated for installation category III and pollution degree 2 Symbol Identification General definitions of safety symbols used on equipment and manual A Caution Warning Refer to accompanying documents for instructions 2011 DynAmp LLC Page v 040530 M Installation Operation and Service Manual WM Watthour Meter This Page is Intentionally Blank 2011 DynAmp LLC Page vi 040530 M Installation Operation and Service Manual WM Watthour Meter DynAmp LLC Customer Support For further assistance contact DynAmp Customer Support at Americas Telephone 1 614 87
9. to TP 3 Adjust the multiplier zero pot R30 for a reading of 0 volts 0 01mV Remove connections shorting voltage and current inputs to TP 4 7 4 PROGRAMMING SET UP PARAMETERS Scaling parameters of the Model WM Watthour meter are programmed at the factory but the user may wish to rescale the unit at a later date This product manual includes one 3 5 1 44MB IBM compatible floppy diskette called Model WM Watthour Meter Setup amp Data Acquisition Item No 040545 The setup software calculates gain constants for voltage current power Watts and energy Watthours These constants are maintained in non volatile RAM The setup software requires an IBM compatible computer with DOS version 3 3 or higher An RS 232 serial port and appropriate serial connection cable are also required The software calibration procedure should be done in the order shown below Connect the computer RS 232 port COM1 to the WM Watthour meter RS 232 port meter connector J 4 located on the rear panel J4 is a standard DB 25 female connector This RS 232 port using an appropriate cable NOTE To use COM2 COM or COM 4 ports see step e below a Connect a stable DC source to voltage input terminals TB10 1 and TB10 2 Measure the voltage input signal with the DVM Adjust the DC source for the specified input 0 05 of full scale b Connect a second stable DC source to current input terminals TB10 4 and TB10 5 Measure the curren
10. 0 00 Max count 99 999 999 Page 7 Installation Operation and Service Manual WM Watthour Meter Table 4 1 continued WM Watthour Meter Specifications Input Processing Resolution 12 bit Ato D Sampling Rate 25 milliseconds Average Value Calculation 32 samples arithmetic mean Output change vs Temperature Voltage and Current 0 006 C max Power Watts kW or MW 0 022 C max Energy Watthours KWH or MWH 0 022 C max Analog Output Watts Range 0 1 0Vdc to 0 10Vdc Resolution 12 bit D to A Accuracy 0 25 Change vs Temperature 0 022 C max Load 3 mA maximum Over range Capability 10 00 RS 232 port Data Format 8 bits no parity 1 stop bit 9600 baud Output Data Voltage Current Power W kW MW Energy Watthours KWH MWH and elapsed time since restart sec ASCII Control Characters d Transmit data request TT reset Watthour count s set up WM parameters External counter optional Open collector output 30V pulse approx 100msec Count rate 100 full scale inputs 100 to 10 000 counts per hour Loading on counter output 70 Ohms minimum ac Power Input 100Vac 120Vac 220Vac or 230 240Vac 1 0 13 Factory configured as ordered field configurable Line Frequency 47 63 HZ Power Consumption 60 VA max Line Voltage sensitivity Volts Amps or Watts 0 001 Vac 120Vac nominal line i Accuracy specifie
11. 1 6900 Fax 1 614 871 6910 8 00 AM to 5 00 PM USA Eastern Time From first Sunday in November to second Sunday in March 13 00 GMT to 22 00 GMT From second Sunday in March to first Sunday in November 12 00 GMT to 21 00 GMT Europe Telephone 41 22 706 1446 Fax 41 22 706 1311 8 30 AM to 5 00 PM Central European Time From last Sunday in October to last Sunday in March 7 30 GMT to 16 00 GMT From last Sunday in March to last Sunday in October 6 30 GMT to 15 00 GMT After Hours Critical Service Emergency Telephone 1 614 871 6906 5 00 PM to 8 00 AM USA Eastern Time From first Sunday in November to second Sunday in March 22 00 GMT to 13 00 GMT From second Sunday in March to first Sunday in November 21 00 GMT to 12 00 GMT Central e mail help dynamp com DynAmp web www dynamp com 2011 DynAmp LLC Page vil 040530 M Installation Operation and Service Manual WM Watthour Meter This Page is Intentionally Blank 2011 DynAmp LLC Page viii 040530 M Installation Operation and Service Manual WM Watthour Meter Page Rev All New sevl A sevl B drws C drws D drws E Front F All G 26 H 26 All J v 1 25 28 K all L 19 M 2011 DynAmp LLC 040530 M REVISION PAGE Revision Summary First Issue Text changes Add program disk to inside back cover Add drawing revisions several Add drawing revisions 05D107125 Change fuse ratings 05D1071 72 spare parts Warranty Change
12. 5 seconds that is 18 2 hours then press ENTER f The computer will display Reset WhM Watthour Meter Press the WM s front panel RESTART button The WM will begin transmitting data sets with the specified period between sample sets The character d will appear in the lower right hand corner for approximately 100 milliseconds each time a data set is requested by the Data Acquisition Program The data will appear on the computer screen as it is received The data will be appended to the target file after each line of data sample set appears on the computer screen g When all 40 sample sets are completed and stored the computer will display Quit y n h Type y to repeat from step h above Type n to exit WM Data Acquisition Program i If the RESTART button is not pressed within 60 seconds the computer will display Receiver Timeout Error Quit y n 2 This message is also displayed if there is a communication problem between the computer and the WM Watthour meter j Type y to exit the WM Data Acquisition Program Check the RS 232 connection cable and Port address if RESTART was pressed and Receiver Timeout Error message resulted Repeat from Step e above 6 9 RIPPLE ON SIGNAL INPUTS It is sometimes difficult to supply the Watthour meter a clean dc input signal In the industry most rectifier output currents are smooth and ripple free due to the inductive loads attached to the rectifier output Often the v
13. C to contain a specific value proportional to the count rate specified by the user This proportional value represents quantity of energy used assuming that both inputs are at full scale for the entire 25 millisecond sample period As the microprocessor cycles the process of sampling the power over time is essentially a definite integral of the power yielding energy Watthours KWH or MWH The energy value is summed in RAM and stored as a running total This total is constantly compared to the proportional value in non volatile RAM 2011 DynAmp LLC Page 24 040530 L Installation Operation and Service Manual WM Watthour Meter When the value in RAM exceeds the value in non volatile RAM a pulse is generated by the pulse output circuit to increment the 6 digit electro mechanical counter by one count The value in non volatile RAM is then subtracted from the running total The same running total is also maintained in a different RAM address This running total is scaled per user s specification and displayed on the vacuum fluorescent display This running total is zeroed whenever the RESTART button is depressed 2011 DynAmp LLC Page 25 040530 L Installation Operation and Service Manual WM Watthour Meter This Page is Intentionally Blank 2011 DynAmp LLC Page 26 040530 L Installation Operation and Service Manual WM Watthour Meter 9 MAINTENANCE TROUBLESHOOTING AND REPAIR 9 1 MAINTENANCE The WM Watthou
14. DynAmp MODEL WM WATTHOUR METER Installation Operation and Service Manual Manual Item No 040530 Rev M DynAmp LLC 3735 Gantz Road Phone 1 614 871 6900 www dynamp com Grove City Ohio 43123 USA Fax 1 614 871 6910 help adynamp com Installation Operation and Service Manual WM Watthour Meter This Page is Intentionally Blank 2011 DynAmp LLC Page ii 040530 M Installation Operation and Service Manual WM Watthour Meter DynAmp LLC WARRANTY Items and components manufactured by Seller for permanent installation are warranted for two 2 years from the date of shipment Items and components manufactured by Seller for portable and temporary use in more than one location are warranted to be free from defects in material and workmanship for a period of eighteen 18 months from the date of shipment Items and components not manufactured and resold by Seller are warranted by their manufacturer Warranty repair shall be at DynAmp s option in the form of repair or replacement of the defective items or components Concerning warranty repairs DynAmp will be responsible for DynAmp provided time material and transportation costs shipping or travel Actual method of warranty repair correction will be determined by DynAmp at DynAmp s sole option Such warranty repair shall constitute a fulfillment of all DynAmp LLC liabilities in respect to said items and components In no event shall DynAmp LLC be liable for conseq
15. MUNICATION PROCEDURES eee 29 9 6 SPARE PARTS ORDERS ROUTINE OR EMERGENCN AA 29 9 7 SPARE PARIS LIST tics is bosch edna eine aan a e a a a 30 10 DRAWING LIST 31 APPENDIX A 33 GLOSSARY OF TERMS eege ainan onn a eege 33 TABLE 4 1 WM WATTHOUR METER SPECIFICATIONS o ceceeeeececeeeeseeseeeeeceeceeeseunaeseeeseeeenenaans 7 TABLE 4 1 CONTINUED WM WATTHOUR METER SPECIFICATIONS sisisesoinesnenrienrrrrnerrreerrrrrrerrree 8 TABLE 4 1 CONTINUED WM WATTHOUR METER SPECIFICATIONS aisisesoinesneneneerrrrnerrrrererrrrerrree 9 TABLE 6 1 DATA R GoppEOopMAT rorntn trete arenan urere orerennne 16 TABLE 9 1 TROUBLESHOOTING TABLE 28 TABLE 9 2 SPARE PARTS Uer 30 TABLE 923 SORTWAREIASS WEE 30 TABLE TO T DRAWING LIS Tess sscsvcrvicncosedz a geed EE 31 2011 DynAmp LLC 040530 M Page vi Installation Operation and Service Manual WM Watthour Meter 1 SAFETY 1 1 OVERVIEW This equipment is designed to be connected to hazardous electric voltages Ignoring the installation precautions and warnings can result in severe personal injury or equipment damage The following are general guidelines that should be followed when installing operation and servicing the Watthour Meter Model WM All installation maintenance and service must be performed by qualified technicians who are familiar with the warnings and instructions of this manual Always follow all local and plant safety procedures The cover must r
16. Watthour meter is suspected the time since restart data may be used to confirm that an accidental reset did occur Unfortunately this data is the elapsed since the most recent restart that is multiple accidental restarts between data log entries will not be detected 6 7 RS 232 PORT PROTOCOL The WM Watthour meter system software polls the RS 232 port once each 200 to 250 milliseconds In order to access the WM s RS 232 port the user must program the RS 232 data format of the connected computer for a data format of 8 bits no parity 1 stop bit and 9600 Baud The WM will respond to the ASCII characters d r and s When one of these characters is received it will be displayed on the right most character of the fluorescent indicator module for approximately 100 milliseconds All other characters will be ignored Upon receiving the ASCII character d the WM Watthour meter will transmit an ASCII string containing the most recent instantaneous values of voltage current and power Watts written to RAM The transmitted ASCII string will also include the present accrued Watthour count and elapsed time since restart seconds The ASCII string will be a space delimited Data Record containing ten fields See table below for the Data Record Format 2011 DynAmp LLC Page 15 040530 L Installation Operation and Service Manual WM Watthour Meter Table 6 1 Data Record Format Field Content
17. ale current per hour then press ENTER Use five significant digits The process energy consumption corresponding to the voltage current and power levels used in the previous examples would be entered as 5 0000 The computer will display Please Enter Watthour Unit of Measure Type the appropriate symbol for energy units typically MWH then press ENTER The computer will display Counts per Hour 2011 DynAmp LLC Page 21 040530 L Installation Operation and Service Manual WM Watthour Meter This count may range from 100 to 10 000 counts per hour and is the pulse output to the external electro mechanical counter Type the appropriate number of counts per hour with both inputs at full scale MWH then press ENTER q The computer will display The display parameters are Full Scale Voltage 100 00 V Full Scale Current 50 000 kA Full Scale Watt 5 0000 MW Full Scale Watthour 5 000 MWH Counts per Hour 1000 Are the parameters correct y n If display values are correct type y then press ENTER To change display scaling values before proceeding press n then press ENTER then repeat steps h through r above The WM Watthour count will begin totalizing at this time The WM Calibration and Test Program may also be copied to and run from the computer s hard disk 7 5 ANALOG WATT OUTPUT CALIBRATION For proper scaling the component values of R39 and R40 must be installed for the de
18. are discussed below 5 2 TEMPERATURE Model WM Watthour meter is designed to operate within stated tolerances at ambient tem peratures DynAmp LLC does not advise installation in areas where these conditions cannot be maintained to ensure the accuracy of the WM Watthour meter 5 3 CONTAMINATION The standard WM Watthour meter is neither air tight nor sealed against exposure to contaminants If the installation is to take place in an area of continued exposure to harsh chemicals conductive particles or other foreign matter provisions should be made for the protection of the unit 5 4 ELECTRICAL ISOLATION The voltage and current input signals of the WM Watthour meter are internally isolated from all other Watthour meter inputs outputs line voltage and each other Care however must be taken to avoid over ranging the isolation voltage specifications for model WM input circuitry 5 5 MOUNTING CONSIDERATIONS The dimensions required for the WM Watthour meter are given in table 4 1 and on the drawings located in the rear of this manual When installing the unit adequate provision should be made for ease of removal for inspecting and or maintenance Proper placement to allow the operator to see the display adequately must also be given some consideration 5 6 WIRING AND INITIAL SETUP A 10 terminal connector strip is provided on the rear panel of the WM Watthour meter Refer to the Outline and Mounting drawing at the rear of this manual
19. ately 10 volts to the input of the front end isolators The output of the isolators are then instantaneously multiplied together by an analog multiplier All three outputs are then taken into an analog switch that in turn drives the analog to digital converter on the microprocessor board 8 7 ANALOG WATTS OUTPUT CIRCUIT The analog Watts output circuit consists of a 12 bit D A converter and a buffer amplifier The circuit is used to output the instantaneous Watts signal to any external device This output can be scaled between 100mV and 10V full scale corresponding to the full scale Watts reading 8 8 PARALLEL OUTPUT CIRCUIT The parallel output circuit is used to drive the 40 character by 2 line vacuum fluorescent display through the display interface circuit The display is used to show the dc average voltage dc average current average Watts and Watthours The display is continuously updated using the most recent data The parallel output circuit is located on the same pc board assembly as the analog input and output circuits 8 9 PULSE OUTPUT CIRCUIT The pulse output circuit is used to drive an external electro mechanical counter The output is approximately 24 Vdc with a period of 100 milliseconds The output is driven via an open collector transistor circuit 8 10 THE WATTHOUR FUNCTION To obtain the Watthour function a time integration is required The non volatile RAM inside the WM Watthour meter is programmed by DynAmp LL
20. d at full scale input and is rated in percent of full scale at DynAmp standard test conditions H unspecified factory will calibrate for 1000 counts hour 2011 DynAmp LLC Page 8 040530 L Installation Operation and Service Manual WM Watthour Meter Table 4 1 continued WM Watthour Meter Specifications Dimensions and Weight Front WM Panel standard 19 rack mount 4U rack space 6 96 H x 19 W x 14 68 D Hole Spacing 176 8mm x 482 6mm x 372 9mm 4 00 101 6mm Counter remote 1 97H x 2 36W x 3 5D cutout for panel mounting 50 1mm x 60mm x 89mm Weight 15 Ibs 6 81kq Environmental Operating Temperature 4 F to 131 F 20 C to 55 C Storage Temperature 4 F to 131 F 20 C to 55 C Relative Humidity 0 85 Isolation Voltage to Current input 300Vac Voltage or Current input to anything 300Vac Output to Chassis 500Vac Line to anything 500Vac 2011 DynAmp LLC 040530 L Page 9 Installation Operation and Service Manual WM Watthour Meter This Page is Intentionally Blank 2011 DynAmp LLC Page 10 040530 L Installation Operation and Service Manual WM Watthour Meter 5 INSTALLATION 5 1 ENVIRONMENTAL CONSIDERATIONS Prior to installing the WM Watthour meter some considerations should be given to the factors of temperature contamination and electrical isolation These factors
21. d returns to zero again volts direct A voltage difference of potential which does not change in Vdc current polarity Watt W The practical unit of electric and other power One Watt is dissipated by a resistance of 1 ohm through which a current of 1 ampere flows Watthour WH The unit of electrical energy or work 1 WH equals 10 KWH Watthour meter WM Watthour meter An instrument for measuring electrical energy in Watts and Watthours 2011 DynAmp LLC Page 34 040530 L
22. e elapsed time since restart The time period between sample sets is specified by the user The WM Data Acquisition Program requires an IBM compatible computer with DOS version 3 3 or higher An RS 232 serial port and appropriate serial connection cable are also required To run the program follow the steps below Connect the computer RS 232 port COM1 or COM2 to WM Watthour meter RS 232 port located on the rear panel using an appropriate cable J4 is a standard DB 25 female connector Insert the WM Calibration amp Test Program Disk into the computer s 3 5 1 44MB disk drive typically A Go to the DOS prompt and type A or the designated drive letter then press ENTER to log to the 3 5 inch disk drive Type cd acquire then press ENTER to go to the acquire subdirectory Type WHMDAT B then press ENTER to begin the WM Data Acquisition program 2011 DynAmp LLC Page 16 040530 L Installation Operation and Service Manual WM Watthour Meter The computer will display WhM Watthour Meter Data Acquisition Routine 06 09 94 DEO Default Comm Port 1 Change Comm Port y n a Type n to select Comm 1 Type y to select Comm 2 b The computer will display Enter Data Filename c Type the name of path filename of target for acquired data then press ENTER d The computer will display Acquisition Time sec e Type the number of seconds between samples the number of seconds must be between 1 and 6553
23. eld When the displayed value s exceed the available display digits the fluorescent indicator will display the following characters 2011 DynAmp LLC Page 13 040530 L Installation Operation and Service Manual WM Watthour Meter XXXXXXXX V typical voltage display overflow XXXXXXXX kA typical current display overflow XXXXXXXX MW typical power display overflow 6 5 ENERGY WATTHOUR OVER RANGE INDICATION The WM will count and display up to 99 999 999 Watthours kW or MWH When the maximum has been exceeded the fluorescent indicator module will display a blinking o r in the position adjacent right of the energy Watthour data field This blinking o r indication will remain until the RESTART button is depressed When the count has been exceeded the energy unit count data Watthours KWH or MWH will turn over and begin again at 000 00 Note that once the count has been exceeded and the blinking o r is displayed adjacent to the Watthours it will not be known how many times the number of times the maximum count has turned over and again started at zero counts 6 6 SUGGESTIONS FOR DATA LOGGING Data may be logged using a computer linked to the WM Watthour meter via the RS 232 serial port or it can be recorded by hand It is important to establish an agreed upon data logging method before the data is taken For best results define the following parameters Time Period Determine what time s the Watt and
24. emain closed at all times during operation to ensure safety of personnel Only authorized personnel or technicians should be allowed to open and service the unit Replace fuses with correct type size and value Refer to the servicing instructions or spare parts list for more information on replacement fuses Do not bypass the fuses or modify the electronics Disconnect power to the system before replacing fuses Failure to follow these instructions will result in intermittent operation and premature failure and will void the warranty Units are not intrinsically safe Do not place in explosive atmospheres Use of the equipment in a manner not specified by the manufacturer can impair the protection provided within DynAmp does not assume liability for the customer s failure to comply with the rules and requirements provided in this manual 2011 DynAmp LLC Page 1 040530 L Installation Operation and Service Manual WM Watthour Meter This Page is Intentionally Blank 2011 DynAmp LLC Page 2 040530 L Installation Operation and Service Manual WM Watthour Meter 2 HANDLING AND STORAGE DynAmp products are engineered and manufactured for use in industrial environments However they contain sensitive electronic and mechanical components which may be damaged and fail if not handled and stored properly All products must be handled and stored with the same care as any precision measurement instrument Severe bumps or jolts ma
25. er kiloWatt Kw See Watt 1 Kw equals 1000 Watts k designates 10 power kiloWatthour A large unit of electrical energy or work with relation to time 1 KWH kWH equals 10 Watts for one hour milliampere Ma See ampere 1 Ma equals 0 001 ampere The m designates 10 power Microprocessor MPU Usually a single chip element that contains the control unit central processing circuitry arithmetic and logic functions and can be used as the central processing unit of a microcomputer or dedicated automated control system milliseconds Ms 1 Ms equals 0 001 second The m designates 10 power megaWatt MW See Watt 1 MW equals 1 000 000 Watts M designates 10 power megaWatthour MWH A very large unit of electrical energy or work with relation to time 1 MWH equals 10 Watts for one hour programmable read Memory which can permanently store a program by a burn in only memory PROM procedure from an PROM programmer random access memory A memory that provides user access to storage in which data can RAM be retrieved in any order 2011 DynAmp LLC Page 33 040530 L Installation Operation and Service Manual WM Watthour Meter volts alternating current Vac A voltage of which the average value is zero and periodically changes polarity referred to as a cycle In one cycle the ac voltage starts at zero rises to a maximum positive value returns to zero rises to a maximum negative value an
26. he equipment is removed for inspection prior to installation the equipment must be repackaged in the original undamaged container or crate in the same manner as it was shipped to prevent environmental damage or placed in a storage location that meets the required environmental and storage conditions General product storage temperature and humidity requirements Storage Temperature 40 to 70 C 40 to 158 F Storage Humidity 85 non condensing DynAmp LLC does not assume liability for the customer s failure to comply with handling and storage requirements For further assistance contact DynAmp customer support 2011 DynAmp LLC Page 3 040530 L Installation Operation and Service Manual WM Watthour Meter This Page is Intentionally Blank 2011 DynAmp LLC Page 4 040530 L Installation Operation and Service Manual WM Watthour Meter 3 DESCRIPTION 3 1 OVERVIEW The DynAmp Model WM is a microprocessor based Watthour meter for dc applications The instantaneous current and voltage signals are multiplied to give an instantaneous power reading in Watts A time integration of the Watts signal yields a totalized numerical count representing dc Watthours Voltage current power Watts and energy Watthours are indicated on the front panel display Model WM may be configured for input power of 100Vac 120Vac 220Vac or 230 240Vac at 47 to 63 Hz The WM Watthour meter controls are few and simple They are POWER ON OFF
27. in the WM Watthour meter 8 3 MEMORY The memory circuits consist of EPROM RAM and non volatile RAM NOVRAM The EPROM is used for program storage The RAM is used for system variables and counter constants The NOVRAM is used for system scaling factors The NOVRAM is programmed through the RS 232 port per the user s specifications 8 4 TIMER CIRCUITS The timer circuits are used to generate the timing pulses required by the WM Watthour meter The timer circuits generate interrupt pulses that control the operation of the microprocessor unit MPU During each interrupt cycle the MPU inputs the voltage current and Wattage signals The MPU then calculates the Watthours count The Watt signal is also output via the D A converter circuit to an analog Watts output 8 5 RS 232 CIRCUIT The RS 232 circuit is used to input the user s specifications for calibration of the WM Watthour meter The circuit is also used to output the voltage current Watts and Watthours and time since last integration counter reset data upon request 2011 DynAmp LLC Page 23 040530 L Installation Operation and Service Manual WM Watthour Meter THE FOLLOWING CIRCUITS ARE LOCATED ON THE WM ISOLATOR PC BOARD ASSEMBLY 8 6 ANALOG INPUT CIRCUITS The analog input circuit contains scaling components isolation amplifiers filtering and multiplying circuitry The analog input circuitry for the voltage and current are scaled so they provide approxim
28. instnnntrrnetrintinstinsetnnarnnsrnnnna 13 6 4 DISPLAY DIGIT OVERFLOW INDICATION AAA 13 6 5 ENERGY WATTHOUR OVER RANGE INDICATION 14 6 6 SUGGESTIONS FOR DATA LONG dEkgieteteest uge eeEeetegett deet eeg 14 6 7 RS 232 PORT PROTOCOL eae rare oa ch cc da eege eege 15 6 8 THE WM DATA ACQUISITION PROGRAM 16 6 9 RIPPLE ON SIGNAL INPUTS irinenn Steeg eegenen 17 7 CALIBRATION 19 1 1 CALIBRATION INTERVALS eegener dele seis aneeavaceestaeevncebea enti dtpeaattienned ad 19 T2 DEE Sege deeg 19 T3 ZEROING EE 19 ZA PROGRAMMING SET UP PARAMETERS AAA 20 7 5 ANALOG WATT OUTPUT CALUIBRATION eecceesee essere eennee trees eeneeeeeeeeseneeeeeneeee 22 8 THEORY OF OPERATION 23 Od CAE NEAL E 23 8 2 MICROPROCESSOR EE 23 83 MEMORY EE 23 8 4 TIMER CRO US a aa Eet denk 23 8 5 AS Loe GIG WM niian aap E E N ET 23 2011 DynAmp LLC Page xi 040530 M Installation Operation and Service Manual WM Watthour Meter 8 6 ANALOG INPUT CIRGUITS wiossccecesccctescnseuee tekicieetidalelesdee dae eae shteceapesareaeertiedaeeddaenss 24 8 7 ANALOG WATTS OUTPUT CIRCUIT WEE 24 8 8 PARALLEL OUTPUT CIRCUIT virrin aiaia 24 8 9 PULSE OUTPUT CUR GO EE 24 8 10 THE WATTHOUR FUNCTION we sccicctctcsisccigescantedeneenstiehgadensdhennsieleeeeadunioie Wades 24 9 MAINTENANCE TROUBLESHOOTING AND REPAIR 27 9 1 MANTERNACH Eeer bela aa 27 OF FUSEREPLACGEMEN ME 27 9 3 LINE VOLTAGE SELECTION EE 27 9 4 BASIC TROUBLE Tele CC 28 9 5 SERVICE ASSISTANCE AND COM
29. ish to telephone us please telephone at 614 871 6900 and follow the instructions for EMERGENCY SERVICE You will be contacted within 30 minutes We cannot however guarantee that service assistance will be available at any given off hour time When we are reached by phone our first step will be to provide over the phone assistance at no charge If the problem cannot be resolved by telephone we will arrange for service at your site or by shipment to DynAmp LLC as you request We will make every possible attempt to quickly support your emergency on site needs regardless of how contacted 9 6 SPARE PARTS ORDERS ROUTINE OR EMERGENCY Requests for spare parts either in an emergency or for a routine order should be directed to Inside Sales during normal hours if possible or via any method shown above for off hours In many cases we can provide same day delivery for critical circumstances When contacting us please present as much information as possible the related equipment Model Number and Serial Number the required part name and its item number any other identifying or vendor number s and your time needs An approved Purchase Order Number should be given with your order 2011 DynAmp LLC Page 29 040530 L Installation Operation and Service Manual WM Watthour Meter 9 7 SPARE PARTS LIST Table below lists the recommended spare parts that should be on hand to facilitate minimum downtime of the WM Watthour meter
30. ll Scale Voltage Type the actual process voltage level represented by the full scale voltage input signal then press ENTER Use five significant digits For example a typical process voltage would be entered as 100 00 The computer will display Please Enter Voltage Unit of Measure Type the appropriate symbol for voltage units typically V then press ENTER The computer will display Please Enter Full Scale Current Type the actual process current level represented by the full scale current input signal then press ENTER Use five significant digits For example a typical process current would be entered as 50 000 The computer will display Please Enter Current Unit of Measure Type the appropriate symbol for current units typically kA then press ENTER The computer will display Please Enter Full Scale Watt Type the actual process power level at full scale typically full scale volts times full scale current then press ENTER Use five significant digits For example the process power level corresponding to the voltage and current examples would be entered as 5 0000 The computer will display Please Enter Watt Unit of Measure Type the appropriate symbol for power units typically MW then press ENTER The computer will display Please Enter Full Scale Watthours Type the actual process energy consumption at full scale typically full scale volts times full sc
31. nce of testing and calibration laboratories and Laboratory Accreditation Bureau Guidance for Documenting and Implementing ISO IEC 17025 2005 and Laboratory Guidance As a guideline DynAmp recommends a 24 month interval of calibration for all permanently installed products and a 12 month interval of calibration for all products used in portable applications 7 2 GENERAL Calibration of the WM Watthour meter is accomplished at the factory but the user may wish to recalibrate the unit at a later date possibly to scale the unit to different values than the original ones The correct values of R1 R2 R4 R9 C1 R21 R22 R24 R28 C8 R39 and R40 must be installed first Two stable DC voltage sources and a 4 5 digit digital voltmeter should be used for calibration The WM should be energized for at least 15 minutes prior to calibration Refer to drawings at the back of this manual for component locations The calibration procedures should be done in the order shown below 7 3 ZEROING Connect a DVM to TP 1 and TP 4 Short the current and voltage input terminals to TP 4 circuit common Adjust the current signal input zero pot R11 for a reading of O volts 0 01mV Move the positive DVM test probe to TP 2 Adjust the voltage signal input zero pot R30 for a reading of 0 volts 0 01mV 2011 DynAmp LLC Page 19 040530 L Installation Operation and Service Manual WM Watthour Meter Move the positive DVM test probe
32. oltage output will not be so smooth It will sometimes have large amounts of ripple on it and induce errors in measured readings 2011 DynAmp LLC Page 17 040530 L Installation Operation and Service Manual WM Watthour Meter The Watthour meter model WM has been designed to deal with these difficult measuring situations The WM can handle a rather large amount of ripple on the input signals without any measurement degradation A worst case situation would probably be a single phase 50Hz rectifier with a full wave bridge output Even with this large amount of ripple the WM display will only appear to be unstable in the last display digits Keep in mind that the display will be displaying average volts and amps 2011 DynAmp LLC Page 18 040530 L Installation Operation and Service Manual WM Watthour Meter 7 CALIBRATION 7 1 CALIBRATION INTERVALS DynAmp does not specify required intervals of calibration for its products The end user of the product is responsible for identifying the appropriate interval between calibrations The intervals should be determined based on the following factors e Requirements of a Quality Management System e Accuracy and permissible limits of errors e Purpose and usage e Experience with similar products e Manufacturer s recommendations e Stability of the product e Past history e Other characteristics of the product Reference ISO IEC 17025 2005 General requirements for the compete
33. plication for use with Model WM 2011 DynAmp LLC Page 5 040530 L Installation Operation and Service Manual WM Watthour Meter This Page is Intentionally Blank 2011 DynAmp LLC Page 6 040530 L Installation Operation and Service Manual WM Watthour Meter 4 SPECIFICATIONS Table 4 1 WM Watthour Meter Specifications Overall Linearity Volts amp Current Watts Repeatability Volts amp Current Watts 0 03 of full scale 0 04 of full scale 0 05 of full scale 0 06 of full scale Inputs Voltage DC or AC peak and Current 0 0 1V to 0 200V full scale or 0 0 1mA to 0 1 0A full scale or 4 20mA Input Impedance Voltage or Current Input Scaled for a voltage input 0 1V to 0 9 5V 0 9 5V to 0 to 100V Z Ohms gt 10M Ohms Z Ohms 10 5K V Voltage or Current Input scaled for a current input Z Ohms 02 lin 10 Displav functions Voltage Current Power Watts kW or MW Energy Watthours KWH or MWH 5 digit dc average volts 5 digit dc average amps 5 digit average Watts 10 digit Watthours Accuracy display Energy Watthours kWH or MWH 2011 DynAmp LLC 040530 L Voltage and Current 0 10 Power Watts kW or MW 0 25 Energy Watthours KWH or MWH 0 30 External counter 0 30 1 digit Over range Capability display Voltage and Current 5 00 Power Watts kW or MW 1
34. r meter is engineered by DynAmp LLC for long life and maintenance free operation in the field In the event that problems do arise it is recommended that the user contact DynAmp LLC immediately to arrange for return of the WM Watthour meter for repairs or adjustments Extensive field maintenance is not recommended or covered herein as most users do not have the expensive troubleshooting equipment necessary for troubleshooting microprocessor circuits 9 2 FUSE REPLACEMENT The line input fuse is located in the power entry module which is located on the rear panel This fuse is rated at 0 5 A 250Vdc slo blow for 100Vac and 120Vac and rated at 0 25 A 250 Vdc slo blow for 220Vac and 230 to 240Vac Only a fuse of the same specifications should be used as a replacement Disconnect power to the system before servicing or replacing fuses 9 3 LINE VOLTAGE SELECTION The white plastic pointer on the power entry module indicates the selected line voltage The line voltage input may be field configured for 100Vac 120Vac 220Vac 230 240Vac To select the line voltage Remove the plastic fuseholder cover from the power entry module by prying with a small blade screwdriver Refer to drawing Schematic System WM Watthour meter at the rear of this manual Install the appropriate fuse s for the desired line voltage The power entry module has provisions for dual European style fusing To use dual fusing remove shorting bar from the fuse holder
35. s Comment 1 Voltage 2 Voltage Unit of Measure V kV 3 Current 4 Current Unit of Measure A KA 5 Watts 6 Watts Unit of Measure W kW MW 7 Watthours 8 Watthours Unit of Measure Wh kWh MWh 9 Time Since last reset 10 Time Unit of Measure Always Sec Upon receiving the ASCII character r the WM Watthour meter will restart the Watthour count only this will not reset the external counter Upon receiving the ASCII character s the WM Watthour Meter enters the set parameters mode Refer to Calibration section for more information 6 8 THE WM DATA ACQUISITION PROGRAM The WM Watthour meter product manual includes a 3 5 inch 1 44 MB IBM compatible floppy disk The disk includes a working example of a typical data acquisition program for use with the WM Watthour meter This disk includes both the executable file and the C language program source code files The file WHMDAT B EXE was compiled with the Microsoft C Version 6 0 compiler The WM Data Acquisition Program source code may be modified and recompiled for the specific requirements of the process being monitored Other computer languages such as BASIC may also be used to create data acquisition programs to access the WM Watthour meter RS 232 port The WM Data Acquisition Program restarts the displayed Watthour count then takes 40 sets of samples of voltage current power Watts energy Watthours and th
36. sired full scale output voltage refer to the Isolator pc board assembly at the rear of the manual To calibrate the analog Watt output a Connect a stable DC source to voltage input terminals TB10 1 and TB10 2 Measure the voltage input signal with the DVM Adjust the DC source for the specified input 0 05 of full scale b Connect a second stable DC source to current input terminals TB10 4 and TB10 5 Measure the current input signal with the DVM Adjust the DC source for the specified input 0 05 of full scale c Connect a DVM to TP 3 and TP 4 d Adjust the Watt output calibrate pot R33 for the desired full scale voltage reading 0 01mV 2011 DynAmp LLC Page 22 040530 L Installation Operation and Service Manual WM Watthour Meter 8 THEORY OF OPERATION 8 1 GENERAL Refer to the schematics included in the back of this manual Reference to these drawings will be helpful in gaining an understanding of the WM Watthour meter for maintenance and or troubleshooting purposes THE FOLLOWING CIRCUITS ARE LOCATED ON THE WM MOTHERBOARD ASSEMBLY 8 2 MICROPROCESSOR The operation of the WM Watthour meter is based on a Motorola MC6809 or equivalent microprocessor MPU performs all of the necessary calculations and data manipulation for correct operation of the WM Watthour meter The MPU is driven by a clock circuit and its associated interrupt circuitry to synchronize all operations with
37. t input signal with the DVM Adjust the DC source for the specified input 0 05 of full scale c Insert the WM Calibration amp Test Program Disk into the computer s A drive Reset re boot the computer d Wait for the MIRROR program title screen to be displayed Press any key to continue The computer will display the Mirror status screen displaying the settings used by the MIRROR program If the MIRROR Status Screen is not displayed at this point in the procedure press ESC then type qu to exit the MIRROR program Begin again at Step d above To use COM2 COM3 or COM4 port Connect RS 232 cable to desired computer COM port Enter MIRROR program as above Press any key to see status screen Press ESC key to get prompt Command Type PO The mirror program will detect available COM ports Select the desired port then continue steps below e Type 7 then press ENTER to select 9600 baud rate The computer display will clear except for a status bar across the bottom of the computer screen f Press s to initiate WM setup routine The computer will display 2011 DynAmp LLC Page 20 040530 L Installation Operation and Service Manual WM Watthour Meter g Please adjust voltage and current inputs to full scale Continue y n Use the DVM to measure the voltage and current inputs to confirm that full scale input levels are properly set Press y to continue The computer will display Please Enter Fu
38. to connect an optional external computer Standard RS 232 cables not provided should be used to connect this plug to another computer The cable length should be a maximum of 50 feet 15 meters from the computer to the WM Watthour meter 2011 DynAmp LLC Page 12 040530 L Installation Operation and Service Manual WM Watthour Meter 6 OPERATION 6 1 GENERAL OPERATING INSTRUCTIONS The WM Watthour meter should now be ready to operate Place the POWER switch located on the rear panel to the ON position The front panel display will illuminate showing readings for voltage current power Watts and energy Watthours If any tests are to be made to confirm readout accuracy allow 30 minutes for the WM Watthour meter to stabilize If at any time it is necessary to restart the WM Watthour meter quickly depress and release the momentary RESTART switch located on the front panel This sets the Watthour count stored in WM Watthour meter random access memory RAM to zero and restarts the WM operating software Following restart the Watthour display will start from a zero count however the 6 digit electro mechanical Watthour counter must be manually reset by depressing the RESTART button on the face of the counter After energizing the WM Watthour meter avoid unnecessary use of the RESTART switch or turning the POWER switch to OFF and then ON as either of these operations may advance the Watthour remote counter reading by one co
39. uential damages Information in this document is subject to change without notice 1995 1996 1997 2001 2002 2003 2004 2006 2009 2011 DynAmp LLC All rights reserved Reproduction for purposes other than operation and service without written permission of DynAmp LLC is strictly forbidden This manual includes detailed drawings installation operation service and maintenance Users should evaluate the information in the manual and their particular application DynAmp assumes no liability for any incidental indirect or consequential damages arising fro the use of this documentation While all information presented is believed to be reliable and in accordance with accepted engineering practices DynAmp makes no warranties as to the completeness of the information 2011 DynAmp LLC Page iii 040530 M Installation Operation and Service Manual WM Watthour Meter This Page is Intentionally Blank 2011 DynAmp LLC Page iv 040530 M Installation Operation and Service Manual WM Watthour Meter Hazard Warning All installation maintenance and service must be performed by qualified technicians who are familiar with the warnings and instructions of this manual Disconnect power to the system before servicing or replacing fuses Use of the equipment in a manner not specified by the manufacturer can impair the protection provided within DynAmp does not assume liability for the customer s failure to comply with
40. unt Since the Watthour counter on the Watthour meter front panel is reset when the power is turned off the remote counter should be used to obtain the most accurate Watthour data This counter is zeroed only by the operator and not upon a power outage 6 2 VOLTAGE AND CURRENT OVER RANGE INDICATIONS The WM Watthour meter will accurately measure input signals exceeding full scale voltage and current levels by approximately five percent When input signals exceed their respective 105 full scale over range threshold the front panel fluorescent indicator module will display a blinking o r in the character position adjacent right of the over range quantity This blinking o r indication will remain until the RESTART button is depressed and the over range condition s are no longer present 6 3 POWER OVER RANGE INDICATION The WM will accurately measure power Watt kW or MW exceeding full scale by approximately ten percent When input signals yield power levels exceeding the 110 over range threshold the front panel fluorescent indicator module will display a blinking o r in the character position adjacent right of the Watt data field This blinking o r indication will remain until the RESTART button is depressed and the over range condition s are no longer present 6 4 DISPLAY DIGIT OVERFLOW INDICATION The WM will display 5 significant digits in the voltage and current data field and 10 significant digits in the power data fi
41. with any input Reversed polarity of Voltage input signal Displayed current 0 00 with any input Reversed polarity of Current input signal Displayed power Watthours kW or Reversed polarity of Current and or Voltage MWH is 0 00 with any input input signal s No characters on display Display DC voltage harness disconnected 2011 DynAmp LLC Page 28 040530 L Installation Operation and Service Manual WM Watthour Meter 9 5 SERVICE ASSISTANCE AND COMMUNICATION PROCEDURES If operational problems arise which can not be resolved by review of all related procedures given in this book please contact Service at DynAmp LLC NORMAL BUSINESS HOURS 8 00 am to 4 15 PM USA EASTERN TIME ZONE Monday through Friday Greenwich Mean Time normal working hours Monday through Friday From last Sunday in Oct to 1st Sunday in April 13 00Z to 21 15Z From 1st Sunday in April to last Sunday in Oct 12 00Z to 20 15Z TELEPHONE 614 871 6900 Our automated answering service will accept your messages at all off hours including weekends Phone in and follow instructions for non emergency service We receive those messages at 8 AM on the next normal workday We will respond at the earliest time possible within your time zone and normal workday FACSIMILE 614 871 6910 Automatic reception during all hours NOTE If you are experiencing downtime or other circumstances that are truly critical during our off hours See above and w
42. y damage internal parts and cause malfunction or premature failure DynAmp products are designed and assembled with conformal coating shock mounting and environmental seals when appropriate or when specified However this protection requires that the product must be properly installed and operational before the protection is fully functional Therefore adequate protection from humidity shock and temperature must be provided during handling and storage prior to installation The handling and storage of equipment must be sufficient to meet the storage temperature and humidity specifications of the product and to prevent any condensation or contact with water or any other liquid The storage location and container or crate must provide adequate protection from precipitation rain snow ice and direct water contact Adequate shelter must be provided to prevent the accumulation of precipitation rain snow ice and water which can lead to the deterioration or failure of shipping containers or crates and cause water ingress Storage in coastal or industrial areas subject to salt laden or corrosive air or areas of wind driven sand or other abrasive dust must be adequate to prevent the deterioration or failure of shipping containers or crates and cause ingress Frequent inspection of storage areas and storage containers or crates is required to ensure proper storage conditions are being maintained If the shipping container or crate is opened and or t

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