Omega Vehicle Security DRA-DCC-8 User's Manual
Contents
1. User s Guide Ve iiri d domum y http www omega e mail info omega com Pabpssapacossoseosee ONCE ee tii mS M a DRA DCC 8 DIGITAL TO 8 CURRENT LOOP CONVERTER omega com EOMEGA OMEGAnet On Line Service Internet e mail http www omega com info omega com Servicing North America USA One Omega Drive Box 4047 Canada 976 Bergar 150 9001 Certified Stamford CT 06907 0047 Laval Quebec H7L 5A1 Tel 203 359 1660 Tel 514 856 6928 FAX 203 359 7700 FAX 514 856 6886 e mail info omega com e mail canada omega com For immediate technical or application assistance USA and Canada Sales Service 1 800 826 6342 1 800 TC OMEGASM Mexico and Latin America Benelux Czech Republic France Germany Austria United Kingdom 150 9002 Certified Customer Service 1 800 622 2378 1 800 622 BESTSM Engineering Service 1 800 872 9436 1 800 USA WHENS M TELEX 996404 EASYLINK 62968934 CABLE OMEGA Tel 95 800 TC OMEGASM FAX 95 203 359 7807 En Espanol 95 203 359 7803 e mail espanol omega com Servicing Europe Postbus 8034 1180 LA Amstelveen The Netherlands Tel 31 20 6418405 FAX 31 20 6434643 Toll Free in Benelux 06 0993344 e mail nl omega com Ostravska 767 733 01 Karvina Tel 42 69 6311899 FAX 42 69 6311114 e mail czech omega com 9 rue Denis Papin 78190 Trappes2. S SOURCE INK az 6 1 PLC INTERFACE Curse The PLC s output modules can be divided into EI E three popular types TTL output module 24Vdc ioe sink type and 24Vdc source type reno P d There is a jumper selector on printed circuit card PN 7040 which selects between Sink Source B input TTL output module should usualy be considered as sink type See figure 2 Figure 2 6 2 THE E ENABLE TERMINAL For E 1 the unitis enabled which means that all input vectors are received and the output is updated W hen E 0 the unit ignores any new input vector The E terminal is recommended to be used asa strobe for parallel data which has a long setup time In this case the following sequence is recommended prior to applying a new vector the E terminal should be set to logical 0 inhibit state then the new input vector should be imposed O nce the new data is set the E terminal should be pulsed The E terminal is also used for multidrop configuration The 15 bit vectors are applied to the units in parallel and the selection is carried out by controlling the E inputs 7 SERIAL CON TROLMO DE 7 1 RS232c RS422 SELECT he DRA DCC 8 is equipped with two serial 2040 communication ports The RS232c and the no RS422 A jumper switch atthe right side of the DIP switch array is used to select the req
3. HOUSING Box erminals MOUNTING FUSE W EIGHT DIM EN SIONS Parallel amp Serial control inputs 3 O utput current loop address 12 Output current value Data 1 Enable E 0 lt 0 lt 0 5V 4 lt 1 lt 60V 160 microsecond 6000 updates per second RS232c full duplex RS422 full duplex 300 4800 9600 19200 BPS Even One Reports as interrogated Up to eight units 8 continues current loops 0 20mA or 4 20mA user selected 4 2 ms max for 99 of step 15 32 Vdc regulated 85mA max According to Rmax KQ Vsupply 6 20 0 1 of span typical 0 296 of span max 0 025 of span typical 0 05 of span max Yellow Power O n LED 8 Red output channel LEDs 10 to 60 C 14 to 140 F 25 to 85 C 13 to 185 F 5 to 95 non condensing Plastic Polycarbonate According to IP 50 DIN 40050 According to IP 20 DIN 40050 Standard DIN rail 630mA fast blow 5x20mm 0 7Kg 1 5 Ib 73 2H x 200W x 121mmD 2 88 x7 88 x4 76 WARRANTY DISCLAIMER OMEGA ENGINEERING INC warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase OMEGA Warranty adds an additional one 1 month grace period to the normal one 1 year product warranty to cover handling and shipping time This ensures that OM EGA s customers receive maximum coverage on each product If the unit should malfunction it must be returned to the factory for evaluation OMEGA s
4. SERIAL CO N TROL MODE 7 1 RS232c RS422 Select 7 2 RS422 Termination 7 3 Serial Control Switch Settings 7 4 Serial Communication Parameters 7 4 1 Baud Rate Select 7 4 2 ID Code 7 4 3 Command Formats SELF TEST M O DES 8 1 Self Test 1 8 2 Self Test 2 8 3 Self Test 3 MULTIDRO P CO N FIGURATIO N 10 PUTTING THE UNIT IN TO OPERATION 11 CALIBRATIO N 12 SPECIFICATIONS 1 MOUNTING INSTRUCTIONS The DRA DCC 8 is designed for standard DIN rail mounting Place the unit on the upper part of the mounting rail with the fastening tab facing down Using a suitable flat screwdriver loosen the tab slightly and attach the unit to the rail Once the tab is loosened ensure that the unit is fastened securely in place 2 REPLACING FUSES In order to replace a blown fuse the unit has to be disassembled as follows a Take off both terminal strips by removing the four screws at the edges Note This does not require disconnecting the cables connected to the strips b Remove the front panel using a suitable flat screwdriver Press down gently on the plastic springloaded tabs located in the slots either side of the unit c Disconnect the flat connector which couples the LED circuit on the front panel d Replace the blown fuse WARNING Never install a fuse rated more than 800mA 7041 3 ASSEM BLY The DRA DCC 8 unitincludes Lin B H two printed circuit cards designated as 7041 and P
5. Customer Service Department will issue an Authorized Return AR number immediately upon phone or written request Upon examination by OMEGA if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to mishandling improper interfacing operation outside of design limits improper repair or unauthorized modification This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of being damaged as a result of excessive corrosion or current heat moisture or vibration improper specification misapplication misuse or other operating conditions outside of OMEGA s control Components which wear are not warranted including but not limited to contact points fuses and triacs OMEGA is pleased to offer suggestions on the use of its various products However OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA either verbal or written OMEGA warrants only that the parts manufactured by it will be as specified and free of defects OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER EXPRESSED OR IMPLIED EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPO
6. N 7040 The two printed circuit cards should occupy the slots in the enclosure ul according to fig 1 o Figure 1 7040 Insert the two printed cards into their slots Connect flat cable between them Connect the front panel flat cable The panel must be inserted into the grooves on both sides of the case while pressing down until a distinct click is heard Assembly is completed by laying the terminal strips in place Note The terminal strips are polarized and must not be placed backwards 4 SUPPLY VOLTAGE The DRA DCC 8 is powered by a DC power supply ata range of 15 32Vdc In order to determine the minimum supply voltage use the following equation Vmin 8 Rload Q 0 02 where Vmin is the minimum required supply voltage Rload Q is the maximum output load including the leads resistance Note If Vmin turns to be less than 15V the minimum required voltage should be 15 Vdc 5 MODES OF OPERATION The DRA DCC 8 unitcan be operated in several modes determined by an internal array of 8 DIP switches as follows 4 20 or 0 20mA output current mode e Parallel control mode Serial control mode e Self test mode 5 1 0 20 OR 4 20mA OUTPUT CURRENT MODE Two current output spans are available 4 20mA or 0 20 selected by SW 6 The DRA DCC 8 receives 12 bits of data which determine the output current value A channel data value of 40
7. Tel 33 130 621 400 FAX 33 130 699 120 Toll Free in France 0800 4 06342 e mail france omega com Daimlerstrasse 26 D 75392 Deckenpfronn Germany Tel 49 07056 3017 FAX 49 07056 8540 Toll Free in Germany 0130 11 21 66 e mail germany omega com 25 Swannington Road P O Box 7 Omega Drive Broughton Astley Leicestershire Irlam Manchester LE9 6TU England M44 5EX England Tel 44 1455 285520 Tel 44 161 777 6611 FAX 44 1455 283912 FAX 44 161 777 6622 Toll Free in England 0800 488 488 e mail uk omega com rem BU I r Se It is the policy of OMEGA to comply with all worldwide safety and EMC EMI regulations that apply OMEGA is constantly pursuing certification of its products to the European New Approach Directives OMEGA will add the CE mark to every appropriate device upon certification The information contained in this document is believed to be correct but OMEGA Engineering Inc accepts no liability for any errors it contains and reserves the right to alter specifications without notice WARNING These products are not designed for use in and should not be used for patient connected applications Contents 9 A UC N MOUNTING INSTRUCTIONS REPLACING FUSES A SSEM BLY SUPPLY VOLTAGE MODES OF OPERATION 5 1 0 20 or 4 20mA output current selection 5 2 Switch Settings PARALLEL CONTROL MODE 6 1 PLC Interface 6 2 The E EN ABLE Terminal
8. The purchaser is responsible for shipping charges freight insurance and proper packaging to prevent breakage in transit FOR WARRANTY RETURNS please have the FOR NON WA RRANTY REPAIRS consult ollowing information available BEFORE contacting OMEGA for current repair charges Have the OMEGA following information available BEFORE PO number under which the product was contacting OMEGA PURCHASED 1 PO number to cover the COST 2 Model and serial number of the product under of the repair warranty and 2 Model and serial number of product and 3 Repair instructions and or specific problems 3 Repair instructions and or specific relative to the product problems relative to the product OMEGA s policy is to make running changes not model changes whenever an improvement is possible This affords our customers the latest in technology and engineering OMEGA is a registered trademark of OMEGA ENGINEERING INC Copyright 1996 OMEGA ENGINEERING INC All rights reserved This document may not be copied photocopied reproduced translated or reduced to any electronic medium or machine readable form in whole or in part without prior written consent of OMEGA ENGINEERING INC Where Do Find Everything Need for Process Measurement and Control OMEGA Of Course TEM PERATURE f Thermocouple RTD amp Thermistor Probes Connectors Panels amp Assemblies A Wire Thermocouple RTD amp Thermistor f Calibrator
9. The response from the device will be 3 300 1270 0 4087 2099 764 3078 550 LF CR Note Wait until the status report has terminated before transmitting new commands 8 SELF TEST MO DES The DRA DCC 8 is provided with three test modes MODE s 52 s3 s4 5 56 57 SELF TESTE ON OFF x X OFF SELF TEST 2 OFF ON X OFF SELF TEST 3 ON ON x OFF according to para 5 2 8 1 SELF TEST 1 Communication Ports Test In order to test the serial communication ports this test mode converts the unit to a transponder for ASCII characters Any transmitted character will be echoed to the host terminal The host parameters should be set to Baud rate 4800 Word length 8 bits Parity even Stop bit 1 8 2 SELF TEST 2 Same Leve In this test mode the DRA DCC 8 unit ignores the address field All the outputs are set according to the data field only 8 3 SELF TEST 3 Saw Tooth In this test mode only one output channel according to the address setting will produce a saw tooth wave form in which the whole value range is used 9 MULTIDRO P CON FIG URATIO N Up to eight DRA DCC 8 units can be installed in a multidrop configuration using the RS422 communication port The controller s RS 422 transmitter is connected to the units receivers while the controller s RS 422 receiver is connected to the units transmitters As communication cable might be
10. 95 FFF is always interpreted as a 20mA output current A channel data value of 0 000 will produce a OmA output current when SW 6 is OFF or4mA when ON 5 2 SWITCH SETTINGS Parallel Control Mode MODE 52 53 S4 55 S6 57 0 20mA OFF OFF X X X OFF OFF 4 20mA OFF OFF X X X ON OFF Serial Control Mode BAUD RATE BPS S1 52 53 S4 55 56 S7 300 OFF OFF ON 4 20mA ON 4800 ON OFF ON 9600 19 CODE 5 e 20 20mA 19200 ON ON ON SW5 MSB Self Test Mode MODE s s2 s3 4 55 56 S7 SELF TEST 1 ON OFF X X OFF SELF TEST 2 OFF ON X OFF SELF TEST 3 ON ON x OFF according to para 5 2 6 PARALLEL CON TROLMO DE MODE s 52 s3 4 5 56 7 PARALLELMODE OFF OFF X OFF according to para 5 2 In the parallel control mode the DRA DCC 8 unit is controlled via a 15 bit bus Three A ddress bits A0 A 3 select the proper current output channel and 12 Data bits 00 011 determine its value A0 and DO MSB The DRA DCC 8 microprocessor continuously scans the input vector Address Data terminals and updates its memory tables upon recognizing a new vector The unit is asynchronous in nature The data should be valid for atleast 160 microseconds
11. SE ARE HEREBY DISCLAIMED LIMITATION OF LIABILITY The remedies of purchaser set forth herein are exclusive and the total liability of OMEGA with respect to this order whether based on contract warranty negligence indemnification strict liability or otherwise shall not exceed the purchase price of the component upon which liability is based In no event shall OMEGA be liable for consequential incidental or special damages CONDITIONS Equipment sold by OMEGA is not intended to be used nor shall it be used 1 as a Basic Component under 10 CFR 21 NRC used in or with any nuclear installation or activity or 2 in medical applications or used on humans Should any Product s be used in or with any nuclear installation or activity medical application used on humans or misused in any way OMEGA assumes no responsibility as set forth in our basic WARRANTY DISCLAIMER language and additionally purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product s in such a manner RETURN REQUESTS INQUIRIES Direct all warranty and repair requests inquiries to the OMEGA Customer Service Department BEFORE RETURNING ANY PRODUCT S TO OMEGA PURCHASER MUST OBTAIN AN AUTHORIZED RETURN AR NUMBER FROM OMEGA S CUSTOMER SERVICE DEPARTMENT IN ORDER TO AVOID PROCESSING DELAYS The assigned AR number should then be marked on the outside of the return package and on any correspondence
12. mand block The second byte is the ID code 07 The third byte is the addressable channel number 07 Up to four bytes of a channel s value can be in BCD mode 0 4095 Leading zeroes can be omitted The last byte is CR which must terminate the command block 7 4 3 2 WITH ECHO BACK FO RMATS C ID CO DE CHAN N EL VA LUE CR This format differs only in the opening character After every command block transfer the DRA DCC 8 echoes back the following C ID CODE CHANNEL LF CR Note If the value is omitted it will be treated as zero Separators such as blanks or commas are not allowed Example Channel 4 in DRA DCC 8 no 7 has to receive the value of 981 Echo back is required The command format is C 7 4 981 CR The echo back will be C 7 4 Note The channel numbers on the DRA DCC 8 front panel are designated from 1 to 8 in binary they are designated from 0 to 7 Note When applying the echo back mode it is advisable to wait for the echo back before transmitting a new command 7 4 3 3 STATUS REPO RT FO RMAT S ID CO DE CR The addressed DRA DCC 8 unit will respond with the values stored in its eight channels The response will start with S ID code following with eight channel values separated with commas and LF CR as terminators Example DRA DCC 8 unit number 3 has the following stored data ch1 300 ch2 1270 ch3 0 ch4 4087 ch5 2099 ch6 764 ch7 3078 ch8 550
13. s amp Ice Point References Ef Recorders Controllers amp Process Monitors A Infrared Pyrometers PRESSURE STRAIN AND FORCE Transducers amp Strain Gauges Load Cells amp Pressure Gauges Displacement Transducers 4 Instrumentation amp Accessories FLOW LEVEL Rotameters Gas Mass Flowmeters amp Flow Computers A Air Velocity Indicators Turbine Paddlewheel Systems f Totalizers amp Batch Controllers pH CONDUCTIVITY WA pH Electrodes Testers amp Accessories lA Benchtop Laboratory Meters Controllers Calibrators Simulators amp Pumps A Industrial pH amp Conductivity Equipment DATA ACQUISITION lA Data Acquisition amp Engineering Software A Communications Based Acquisition Systems A Plug in Cards for Apple amp Compatibles lA Datalogging Systems Recorders Printers amp Plotters HEATERS A Heating Cable A Cartridge amp Strip Heaters A Immersion amp Band Heaters WY Flexible Heaters 4 Laboratory Heaters ENVIRONMENTAL MONITORING AND CONTROL Metering amp Control Instrumentation Refractometers A Pumps amp Tubing A Air Soil amp Water Monitors Industrial Water amp Wastewater Treatment A pH Conductivity amp Dissolved Oxygen Instruments M2612 0197
14. several thousand feet long it is necessary to terminate the end of the line with its characteristic impedance in order to avoid reflections in the transmission line causing data distortion SW 8 in its ON state terminates the Rx inputs with a 1000 load 10 PUTTING THE UNIT INTO OPERATION The DRA DCC 8 is supplied with a set configuration for parallel control mode The DIP switch setting is MODE 51 52 53 54 55 56 87 PARALLEL4 20mA OFF OFF OFF OFF OFF ON OFF The communication port selector see para 7 1 is set to RS232C The unit should be setup according to the required configuration Before applying voltage to the unitsee para 4 for power supply consideration The channel LEDs are connected in series with the output current so that they will light only as an indication of a closed current loop Note After every power on the unit is reset and the initialized default output currents are according to the SW6 setting see para 5 2 In the parallel control mode internal pull up resistors on each of the input terminals keep them in logical 1 state The unit will recognize input voltage up to 0 5V as logical 0 and voltages from 4V to 60V as logical 1 11 DRA DCC 8 CALIBRATION Generally there is no need to calibrate the DRA DCC 8 unit However if calibration is required the following steps should be carried out Two potentiometer trimmers one for Zero and the o
15. ther for Span are located on printed card 7040 The trimmer close to the card edge is the Zero Use the following switch setup for switching all the outputs between 4 and 20mA MODE 51 52 53 54 55 S6 57 ALLCH 4mA OFF OFF X X X ON OFF ALLCH 20 OFF ON X X X ON OFF Note Set the unit to sink mode fig 2 Step 1 Select one channel for example ch 1 for the initial tuning Set the DIPswitch array to all 4mA Apply supply voltage to the unit The initial state of all the output currents is 4 mA Use SW 2 to switch all the outputs between 4 and 20mA Iteratively set the Zero and the Span trimmers for 4 00mA and 20 00mA Step 2 Monitor all the 8 channels in 4mA state and calibrate the Zero trimmer so that their average readings is 4 000mA Then repeat for 20mA state and calibrate the Span trimmer so that their average readings is 20 000mA This procedure should be repeated until calibration is satisfactory 12 SPECIFICATIONS IN PUTS PARALLEL IN PUTS LOGIC LEVELS DATA HOLD TIME MAXIMUM PARALLEL IN PUT RATE SERIALCOMMUNICATION BAUD RATES PARITY STO P BIT STATUS REPO RT MULTIDRO P CA PA BILITY OUTPUTS OUTPUT CURRENT SPAN OUTPUT CURRENT SETTLING TIME PO W ER SUPPLY CURRENT CONSUMPTION MAXIMUM LOOP RESISTANCE ACCURACY RESO LUTION IN DICATO RS AMBIENT TEM PERATURE O peration Storage RELATIVE HUMIDITY
16. uired t communication type See figure 3 ee 1 RS 422 5 232 7 2 RS422 TERMINATION Figure 3 a The SW 8 s ON state terminates RS422 receiver terminals with a 1000 load In a multidrop configuration the last most distant DRA DCC 8 unit should be terminated in order to match the transmission lines Note Only one termination load per RS422 communication link is permissible 7 3 SERIAL CON TROL SW ITCH SETTINGS 1 52 53 54 55 56 57 BAUD RATE ID CODE X ON according to para 5 2 7 4 SERIAL COMMUNICATIO PARAMETERS The communication protocol is 8 bit ASCII even parity and one stop bit 7 4 1 BAUD RATE SELECT SW 1 and SW 2 select one out of four available baud rates SW1 SW2 300 BPS OFF OFF 4800 BPS ON OFF 9600 BPS OFF ON 19200 BPS ON ON 7 4 2 ID CODE Up to eight DRA DCC 8s can be connected in a multidrop configuration Switches SW 3 SW 4 and SW 5 M SB set the ID code 7 4 3 COMMAND FORMATS Three types of command formats are available e Without echo back The host computer sends a massage and does not receives an acknowledgment e W ith echo back The host computer sends a message and receives an acknowledgment stating the DRA DCC 8 ID number and the addressed channel number Status report 7 4 3 1 WITHOUT ECHO BACK FO RMAT A ID CO DE CHANNEL VA LUE CR The character A begins the com
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