Hoffer CAT3 Digital Flow Transmitters for Turbine Flowmeters User
Contents
1. PLUG AC MALE 180 NEUTRAL HOT Sw2 312 10 Installation and Operation 4 2 Flowmeter Input The Preamp circuitry for conditioning the flow signal is located on PCA180 The following drawings illustrate typical connections and switch settings on PCA180 for various input signals Magnetic Pickup Coil j Q oc C516 01 815 m Q ANLG cee gn Q PULSE A Mag Pickup Coil I N c PCA180 5VV1 Coil 5C IC DC lo SIG siIc 8 ante E 5 59 1 IC PULSE 777 eee loc 180 N c SW1 HP 312 Installation and Operation 11 Redi Pulse TTL Pulse j Qc 6 H Q P E z 0 ULSE ULSE C 180 fc 5VV1 C Redi Pulse TTL Pickup Coil G GIG GIS S G O Redi Pulse Open Collector a E IIII I ULSE SIS s m Q P 180 5VV1 E 312 12 Installation and Operation 4 3 Pulse Output provides a Pulse Output option that is scaled per flow unit of measure by a factor of 1 10 or 100 The following drawings illustrate typic2. 23 HP 312 Introduction 1 1 Introduction The CAT3 is a versatile DC or AC powered microprocessor based transmitter which provides pulse output analog output and High Low flow alarm options Up to 3 circuit boards may be installed to provide a variety of input output options The flowmeter input circuitry will accept a variety of signal types including low level sinusoidal MCP RF pulse and contact closure Optional 20 point linearization is available to correct for flowmeter non linearities improving overall system accuracy CAT3 is compatible with all Hoffer turbine flowmeters as well as the H O G series positive displacement flowmeters CAT3 Block Diagram PCA182 PCA184 HIGH ALARM LOW ALARM Li HIGH ALARM OUT AC DC CONVERTER 1 OR TA V LOW ALARM OUT FLOWMETER INPUT PREAMP CONDITIONED SIGNAL 1 MICROCONTROLLE lt PULSE OUT PULSE OUT COM ANALOG OUT ANALOG OUT DAC INTERFACE PCA180 PCA183 RS232 An RS232 communications port located under the top plate allows CAT3 to be remotely configured using a Windows based application that included with all units Configuration and remote monitoring may also be performed using any PC based communications program e g HyperTerm
3. HKB STOCK 4200 0406 USE FLAT COVER FOR OPTION 3B O STOCK 4200 0773 KILARK USE DOME COVER FOR MODEL 3BH O XD AD 3 4 MALE NPT COIL RISER WITH ENCLOSURE IEC EExd II C ZONE 1 amp 2 ATEX EExdII C ZONE 1 amp 2 FM EExd II C CLASS I ZONE 1 CSA EX PROOF DIV 1 amp 2 CLASS I GROUPS A B C amp D CLASS II GROUPS F amp G amp IP66 CLASS III NEMA 4X HP 312 Introduction 3B O ATEX EExd II C ENCLOSURE ATEX APPROVED 24 FNPT CABLE FEATURES NOTE WHEN USING THE AC OPTION WITH A 3 O 3B O OR 3B O ATEX ENCLOSURE THE HIGH DOME IS REQUIRED BECAUSE THE AC CONNECTOR IS SLIGHTLY TALLER THAN THE REST SPECIAL FEATURES MODEL XC XC X XC OPTIONS CE MARK REQUIRED FOR EUROPE SP ANY SPECIAL FEATURES THAT ARE NOT COVERED IN THE MODEL NUMBER USE A WRITTEN DESCRIPTION OF THE SP MIL DESIGNED TO MEET EMC STDS EN5011 1992 AND EN61326 1 1997 NOTES 1 PULSE SCALING IS SUPPLIED AS A STANDARD IN THE BASE PRISE AND IS SCALED TO THE UNIT MEASURE 2 WINDOWS BASED SETUP DISC AND 6 FOOT COMMUNICATION CABLE AVAILABLE 5 HP 312 6 Introduction This page intentionally left blank HP 312 Specifications 7 3 Specifications General Specifications Input Signal Type Magnetic pick up MCP pick up Contact Closure Pulse Input frequency range 0 2 Hz to 4 KHz Signal level Power supply Analog Output Load resistance Accuracy Tempe
4. 4 20 5 1 5 VDC POWER SUPPLY MODELCAT3 X X X M OPTION DC 8 30 VDC AC 100 240 VAC NOTE WHEN IS SELECTED THE ALARM OPTION IS NOT AVAILABLE USE REMOTE ACC39B POWER SUPPLY IF REQUIRED HP 312 4 Introduction ALARM OUTPUT MODELCAT3 X X MEH OPTION 4 HIGH OPEN COLLECTOR 5 HIGH TTL CMOS 6 HIGH RELAY ONE SPDT CONTACT RATED 2A 30V 7 LOW OPEN COLLECTOR 8 LOW TTL CMOS 9 LOW RELAY ONE SPDT CONTACT RATED 2A 30V NOTE WHEN ALARM OPTION IS SELECTED AC POWER IS NOT AVAILABLE USE REMOTE ACC39B POWER SUPPLY ENCLOSURE STYLE MODELCAT3 X XC X OPTIONS 1 GENERAL PURPOSE 2 6 L X 2 6 H X 2 6 W MINIMUM MOUNTING SPACE D 2 LONG DIN RAIL MOUNT SINGLE UNIT UP TO 20 CAT3 UNITS CAN BE MOUNTED ON A SINGLE RAIL ADD 2 PER UNIT 3 0 MEETS CLASS 1 DIV 1 AND 2 GROUPS C D 3H O CLASS IL GROUPS E F G NEMA 4X WITH O RING CERTIFIED CSA UL BODY KILARK GECCT 3 STOCK 200 0945 USE FLAT COVER FOR OPTION 3 STOCK 200 0533 KILARK GECBC DOME COVER DOES NOT MEET GROUP USE DOME COVER FOR MODEL 3H O STOCK 4200 0398 KILARK 2GOU DOME COVER MUST BE USED FOR A C POWERED UNITS 3B 0 MEETS CLASS I DIV 1 AND 2 GROUPS A B C D 3BH O CLASS 1 ZONES 1 AND 2 GROUPS IIB H2 CLASS DIV 1 AND 2 GROUPS F G CLASS III NEMA 3 4 7 B C D 9 E F G CERTIFIED CENELEC CSA UL FM BODY KILARK
5. be disposed of in HFC s discretion HFC does not warrant these goods to meet the requirements of any safety code of any state municipality or other jurisdiction and Purchaser assumes all risk and liability whatsoever resulting from the use thereof whether used singly or in combination with other machines or apparatus This warranty shall not apply to any HFC goods or parts thereof which have been repaired outside HFC s factory or altered in any way or have been subject to misuse negligence or accident or have not been operated in accordance with HFC s printed instructions or have been operated under conditions more severe than or otherwise exceeding those set forth in the specifications for such goods THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE HFC SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OR LOSS OF USE OF THE GOODS WITHOUT LIMITING THE GENERALITY OF THE FOREGOING THIS EXCLUSION FROM LIABILITY EMBRACES THE PURCHASER S EXPENSES FOR DOWNTIME OR FOR MAKING UP DOWNTIME DAMAGES FOR WHICH THE PURCHASER MAY BE LIABLE TO OTHER PERSONS DAMAGES TO PROPERTY AND INJURY TO OR DEATH OF ANY PERSONS HFC NEITHER ASSUMES NOR AUTHORIZES ANY PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE OR USE OF HFC S GOODS AND THERE ARE NO ORAL AGREEMENTS OR WARRANT
6. 4999 991 F12 4999 992 F13 4999 993 F14 4999 994 F15 4999 995 F16 4999 996 F17 4999 997 F18 4999 998 F19 4999 999 F20 5000 000 K01 1 00 K02 1 00 K03 1 00 K04 1 00 K05 1 00 K06 1 00 K07 1 00 K08 1 00 K09 1 00 10 1 00 1 1 00 2 1 00 1 00 4 1 00 15 1 00 312 20 Appendix Default Configuration FIELD Value K16 1 00 K17 1 00 K18 1 00 19 1 00 K20 1 00 CF 1 000 TU 100 GAL FM 1 MIN NB 01 LF 00000 000 AF 99 999 PS 0 OFF FO 8 UA Off AL 99999 981 OC 0 Rate TP No AS No HP 312 Appendix B Communications 21 Appendix B Communications Message Format And Timeout Communication messages consist of a string of ASCII characters terminated by a carriage return character maximum message length coming to the CAT3 is 20 characters including the carriage return The CAT3 will transmit no more than 35 characters before transmitting a carriage return If a message longer than 20 characters sent the instrument responds with Command Sequence is Too Long lt NL gt If an unrecognized or invalid command is sent the instrument responds with Invalid Command lt NL gt The sending unit RS232C serial port configuration must be configured as follows Baud rate 2400 Data bits 8 Parity none Stop bits 1 Handshaking none The CAT3 echoes all received messages and then t
7. IES COLLATERAL TO OR AFFECTING THE AGREEMENT PURCHASER S SOLE AND EXCLUSIVE REMEDY IS THE REPAIR AND OR REPLACEMENT OF NONCONFORMING GOODS AS PROVIDED IN THE PRECEDING PARAGRAPHS HFC SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES HFC 9708 CONTENTS 1 Introduction 1 1 1 Model Number Designation 3 2 Specifications 7 3 Installation and Operation 9 31 Power Supply 9 3 2 Flowmeter Input 10 3 3 Pulse Output 12 3 4 Analog Output 14 3 5 Alarm Outputs 16 3 5 Communications Connections 18 3 6 Wiring 18 Appendix A Default Configuration 19 Appendix B Communications 21 Message Format And Timeout 21 Messages
8. Model CAT3 DC or AC Powered Microprocessor Controlled Transmitter USER S MANUAL HP 312 March 2011 PERFECTING MEASUREMENT H HOFFER FLOW CONTROLS INC 107 Kitty Hawk Lane P O Box 2145 Elizabeth City NC 27906 2145 1 800 4584 252 331 1997 FAX 252 331 2886 www hofferflow com E mail info hofferflow com HOFFER FLOW CONTROLS INC makes no warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose This manual has been provided as an aid in installing connecting calibrating operating and servicing this unit Every precaution for accuracy has been taken in the preparation of this manual however HOFFER FLOW CONTROLS INC neither assumes responsibility for any omissions or errors that may appear nor assumes liability for any damages that may result from the use of the products in accordance with information contained in the manual HOFFER FLOW CONTROLS policy is to provide a user manual for each item supplied Therefore all applicable user manuals should be examined before attempting to install or otherwise connect a number of related subsystems During installation care must be taken to select the correct interconnecting wiring drawing The choice of an incorrect connection drawing may result in damage to the system and or one of the components Please review the complete model
9. Output Released The PS and FO menus shall control the pulse output Used to terminate the TP command TP Output 1Hz Test Frequency for Pulse Output Test Pulse Output Sets output to 1Hz 5096 duty cycle signal This mode is for factory test RA Release Alarm Output for Control According to Menu Settings Alarm Released Releases alarm output for control by the alarm output settings AS Alarm Output Test 0 Alarm output is set low 1 Alarm output is set high For 0 Alarm Active For 1 response Alarm Released After using the 5 command you must initiate a RA command to allow HIT 2A to return to normal operation HP 312 28 Appendix Communications System Commands Supported by Communications Messages System Command Description Response Comments OI Output 4mA Output is 4mA Current output set to 4mA MO Output 12mA Output is 12mA Current output set to 12mA OM Output 20mA Output is 20mA Current output set to 20mA OF Output Rate Input Output equal to input Current output follows rate HP 312 Appendix B Communications 29 RR Read Rate FLOW DATA DATA 0 tothe following maximums 99999 999 ifRD 3 999999 99 if RDz2 9999999 9 ifRD 1 99999999 ifRD 0 CN Adjust 4mA output point CN DATA DATA is th
10. al connections and switch settings for various pulse output options TTL 0 5V 0 10V High Level DC In AC Square j DC DC SIG SIG USER DCS ANLG PULSE PULSE INPUT PULSE N C N C N C 566666666 SW2 Sw2 TTL 0 5V 0 10V AC Square High Level Pulse AC Square HP 312 Installation and Operation 13 Open Collector Isolated Pulse j USER DCS DC V e Bo SIG SIG ANLG PULSE PULSE INPUT PULSE N C N C N C SI SISISISISISISISIS III III 180 180 5VV2 5VV2 Isolated Pulse HP 312 14 Installation and Operation 4 4 Analog Output CAT3 provides an Analog Output option that will output an analog current or voltage that is proportional to the flow rate Analog Output j DC POWER SUPPLY DC DC SIG SIG ANLG PULSE PULSE N C N C N C nta LOAD 666666666 PCA183 183 5VV1I 5VV1 4 20 mA Output 1 5 V Output The Microcontroller located PCA183 accepts the square wave output of the preamplifier and performs all of the calculations that are required to control the Loop Driver After measuring the frequency of the square wave the Microcontroller uses the following equa
11. asarange of the value from F19 plus 0 001 to 5000 000 Frequencies F02 to F19 must be 0 001 greater than the previous frequency and 0 001 less than the next frequency FREQ DATA for F01 through F20 Data to fixed three decimal places K Factor 1 20 K FACT DATA for KO1 through K09 K FACT DATA for K10 through K20 DATA to decimal places as per KD command CF Correction Factor 0 001 to 9999999 999 CORR FACT DATA TU Total Units custom units 100 for gallons 140 for liters 110 for cubic feet 150 for cubic meters 180 for barrels other integer values from 0 and less than 999 will map to GAL LIT NEG M3 BBL CUS TOT UNITS DATA DATA shall be These three numbers will be the same as the first three digits of the tag number Changes to this menu shall cause the changes to the tag number for gallons for liters for cubic feet for cubic meters for barrels for custom HP 312 IM Appendix B Communications 25 Rate Units 0 for seconds 1 for minutes 2 for hours 3 for days FLOW UNITS DATA DATA shall be SEC for seconds MIN for minutes HR for hours DAY for days NB Max Sample Time m to 8 0 m MAX M TIME DATA LF Out Low 0 000 toa maximum value of the Out High setting FLOW DATA AF Out High Minimum is the Out L
12. e integer value that the HIT2A sends to the 4 20mA converter to output 4mA This parameter is passed to the HIT2A to adjust the 4mA output point of the device This value is used in production at the test step to calibrate the 4mA output point CN will cause an Invalid Command response and absence of the symbol will cause the HIT2A to ignore the data CM Adjust 20mA output point DATA DATA is the integer value that the HIT2A sends to the 4 20mA converter to output 20mA This parameter is passed to the HIT2A to adjust the 20mA output point of the device This value is used in production at the test step to calibrate the 20mA output point will cause an Invalid Command response and absence of the symbol will cause the HIT2A to ignore the data SA Set Alarm Output On Alarm Active Sets the alarm output active regardless of the settings HP 312
13. eturn package and on any correspondence FOR WARRANTY RETURNS please FOR NON WARRANTY REPAIRS OR have the following information available CALIBRATIONS consult HOFFER FLOW BEFORE contacting HOFFER FLOW CONTROLS for current repair calibration CONTROLS charges Have the following information 1 P O number under which the available BEFORE contacting HOFFER product was PURCHASED FLOW CONTROLS 2 Model and serial number of the 1 P O number to cover the COST of the product under warranty and repair calibration 3 Repair instructions and or specific 2 Model and serial number of the problems relative to the product product and 3 Repair instructions and or specific problems relative to the product HFC 9708 LIMITED WARRANTY HOFFER FLOW CONTROLS INC HFC warrants HFC s products goods described in the specifications incorporated in this manual to be free from defects in material and workmanship under normal use and service but only if such goods have been properly selected for the service intended properly installed and properly operated and maintained This warranty shall extend for a period of one 1 year from the date of delivery to the original purchaser or eighteen 18 months if the delivery to the original purchaser occurred outside the continental United States This warranty is extended only to the original purchaser Purchaser Purchaser s sole and exclusive remedy is the repair and or replacement of n
14. he minimum input frequency is below 1 Hz HP 312 16 Installation and Operation 3 5 Alarm Outputs provides an optional High Low Flow Alarm feature Alarms require an optional circuit board PCA184 The Alarm option is not available when the AC Power option is equipped The drawings below illustrate the typical connections and switch settings for various alarm options Hi Lo Alarm Relay j High Low Nomally Closed High Low COM 2220000 PULSE 184 N C SW1 N C SIG NO1 SIG ANLG SISISISISIS SISISISISISISISISIS Hi Lo Alarm TTL 0 5V USER DCS ALARMI Jpc sic Q sre PULSE PULSE IN c IN c Iy c SISISISISIS anth 184 swl HP 312 Installation and Operation 17 Hi Lo Alarm Open Collector USER DCS Rm 184 swl gt lt L AA o SISISISISIS DC ALARM1 SIG SIG ANLG PULSE PULSE N C N C N C SISISISISISISISISIS HP 312 18 Installation and Operation 4 5 Communications Connections The RS232 serial port connector is located under the top plate of CAT3 and may be accessed by removing the two screws from the top plate A matching connector is provided with HOFFER HIT2A 301 Communications Cable CAT3
15. inal or ASCII terminal HP 312 2 Introduction The standard unit is packaged in an extruded aluminum enclosure for wall mounting or may be mounted directly on a flowmeter using an optional NEMA 4X or EX enclosure An optional bracket is also available for mounting on standard DIN rail This instrument is designed to conform to the EMC Directive of the Council of European Communities 89 336 EEC and the following standards Generic Emission Standard EN 50081 1 Residential Commercial amp Light Industry Environment Generic Emission Standard EN 50081 2 Industrial Environment Generic Immunity Standard EN 50082 1 Residential Commercial amp Light Industry Environment Generic Immunity Standard EN 50082 2 Industrial Environment HP 312 Introduction 3 1 1 Model Number Designation MODEL A CC XC C XC PULSE INPUT LINEARIZED PULSE OUTPUT LINEARIZED ANALOG OUTPUT POWER SUPPLY ALARM OUTPUT ENCLOSURE STYLE SPECIAL FEATURES PULSE INPUT MODEL A X X XC OPTION 1 MAG COIL PULSE DRY CONTACT Q MC3P 3 ISOLATED PULSE RPM RPR AND HALL EFFECT COILS LINEARIZED PULSE OUTPUT MODEL CAT3 FC XC C OPTION 1 0 5 TTL CMOS 2 OPEN COLLECTOR 3 OPEN COLLECTOR WITH PULL UP TO V 4 AC SQUARE WAVE 5 0 10V SQUARE WAVE REQUIRES CUSTOMER SUPPLIED POWER 12 30 VDC LINEARIZED ANALOG OUTPUT MODELCAT3 XC X XX 1
16. number of each item to be connected and locate the appropriate manual s and or drawing s Identify all model numbers exactly before making any connections A number of options and accessories may be added to the main instrument which are not shown on the basic user wiring Consult the appropriate option or accessory user manual before connecting it to the system In many cases a system wiring drawing is available and may be requested from HOFFER FLOW CONTROLS This document contains proprietary information which is protected by copyright rights are reserved No part of this document may be photocopied reproduced or translated to another language without the prior written consent of HOFFER FLOW CONTROLS INC HOFFER FLOW CONTROLS policy is to make running changes not model changes whenever an improvement is possible This affords our customers the latest in technology and engineering The information contained in this document is subject to change without notice Return Requests Inquiries Direct all warranty and repair requests inquiries to the Hoffer Flow Controls Customer Service Department telephone number 252 331 1997 or 1 800 628 4584 BEFORE RETURNING ANY PRODUCT S TO HOFFER FLOW CONTROLS PURCHASER MUST OBTAIN A RETURNED MATERIAL AUTHORIZATION RMA NUMBER FROM HOFFER FLOW CONTROLS CUSTOMER SERVICE DEPARTMENT IN ORDER TO AVOID PROCESSING DELAYS The assigned RMA number should then be marked on the outside of the r
17. onconforming goods as provided in the following paragraphs In the event Purchaser believes the goods are defective the goods must be returned to HFC transportation prepaid by Purchaser within twelve 12 months after delivery of goods or eighteen 18 months for goods delivered outside the continental United States for inspection by HFC If HFC s inspection determines that the workmanship or materials are defective the goods will be either repaired or replaced at HFC s sole determination free of additional charge and the goods will be returned transportation paid by HFC using the lowest cost transportation available Prior to returning the goods to HFC Purchaser must obtain a Returned Material Authorization RMA Number from HFC s Customer Service Department within 30 days after discovery of a purported breach of warranty but no later than the warranty period otherwise such claims shall be deemed waived See the Return Requests Inquiries Section of this manual If HFC s inspection reveals the goods are free of defects in material and workmanship or such inspection reveals the goods were improperly used improperly installed and or improperly selected for service intended HFC will notify the purchaser in writing and will deliver the goods back to Purchaser upon i receipt of Purchaser s written instructions and ii the cost of transportation If Purchaser does not respond within thirty 30 days after notice from HFC the goods will
18. ow Setting LF to a maximum of the following 99999 999 ifRD 3 999999 99 ifRD 2 9999999 9 ifRD 1 99999999 ifRD 0 20mA FLOW DATA PS Pulse Scale wn for OFF wj for 1 10 forl0 100 for 100 PULS SCALE DATA DATA shall be OFF for OFF XI for 1 10 for10 100 for 100 312 26 Appendix B Communications FO PULS FR Pulse Frequency 1 m 2 m 4 m 8 m EQ DATA UA 0 1 2n Alarm Function for OFF for RATE for TOTAL ALARM FUNC DATA DATA shall be OFF for OFF RAT for RATE TOT for TOTAL AL Alarm Out 0 001 toa maximum defined as follows If UA is RATE 99999 999 999999 99 999995999 9 299999997 If UA is Total or Off 599999 999 1 999999 99f 999999929 9999 9999 ifRDz3 ifRDz2 ifRD 1 if RD 0 if TD 23 if TD 2 if TD 1 if TD 0 ALARM OUT DATA OC 0 1 2 3 Current Out Current output follows rate Current output set to 4mA Current output set to 12mA Current output set to 20mA For 0 response For 1 response For 2 response For 3 response Output Output Output Output equal to input is 4mA is 12mA is 20mA HP 312 Appendix B Communications 27 PR Pulse Output Controlled By PS and FO Pulse
19. ransmits a response string terminated with a carriage return If the sending unit takes longer than one minute to send a message CAT3 aborts the message by clearing the receive buffer If the sending unit PC or other such device wishes to change a setting on the CAT3 the sending unit shall follow the command with an equal sign with the data following immediately after the equal sign The carriage return terminates the message Any response that sends data back to the sending unit shall have equal sign followed by the data Space is allowed between the equal sign and the data on the return message but the total message length is limited to 35 characters HP 312 22 Appendix B Communications READ Example If the sending unit wishes to read the number of points that the has in the K factor table the sending unit shall send NP lt CR gt The echoes the sent message and responds with NUM PTS 2 CR WRITE Example If the sending unit wishes to change the number of points to 20 in the K factor table the sending unit shall send NP 20 lt CR gt The CAT3 echoes the sent message and responds with NUM PTS x 20 CR The CAT3 checks the ranges for data and rejects writes that are not within the allowed range If the sending unit sends data that is not within the allowed range the CAT3 echoes the sent message and responds with the value that is currently
20. rature drift Pulse output Pulse Scaling Hi Lo Alarm Communications Operating temperature Humidity Enclosure Regulatory CE compliant Options 20 point linearization 10 mV rms to 30 Vdc 8 30 Vdc Reverse polarity protected 100 240 Vac Fuse rating 0 5A 250 Vac 4 20mA 1 5V 24mA overflow condition Max 650 Ohms at 24 Vdc 0 02 of full scale 20 C 40ppm deg C 0 5 0 10V Open Collector AC square Requires 12 30 Vdc Power Supply Internal pull up resistor 10k Ohms Recommended load min 50k Ohms Per flow unit of measure divide by 1 10 100 Relay 2A 30 Vdc 0 5V Open Collector 0 5A 30 Vdc RS232 port for Configuration and diagnostics 40 to 85 C 0 90 Non condensing Extruded aluminum DIN rail mount Explosion Proof HP 312 8 Specifications This page intentionally left blank HP 312 Installation and Operation 9 4 Installation and Operation 4 1 Power Supply DC Power 8 30 VDC DC DC SIG SIG E 111111111 M C N C POWER SUPPLY 666666666 180 lt sw2 AC Power 100 240 VAC AC power for CAT3 requires an optional circuit board PCA182 The Alarm option PCA184 is not available when the AC Power option is equipped c 51 srs le ANLG 1 PULSE OQ purse w e 91 M C L11 l n c 1210
21. stored in the CAT3 Example If the sending unit wishes to change the max sample time to 2000 from the previous setting of 10 the sending unit shall send NB 2000 CR The CAT3 echoes the sent message and responds with MAX M TIME 10 CR HP 312 Messages Appendix B Communications 23 Commands Supported By Communications Messages Description Allowed Data Response DN Tag Number 0 to 99999999 TAG NUM DATA The first three digits are the units code for total Changing these digits will change the TU settings FC Linearization 0 Average K factor 1 Linearization table F C METHOD AVG for Average K factor F C METHOD LIN for Linearization table KD K Factor Decimal Point Location 0 for 00000000 1 for 0000000 0 and all K Factors are less than 9999999 9 otherwise not allowed 2 for 000000 00and all K Factors are less than 999999 99 otherwise not allowed 3 for 00000 000 and all K Factors are less than 99999 999 otherwise not allowed K FAC DECL DATA AK Average K Factor 0 001 to 99999 999 if KD 3 999999 99 ifKD 2 9999999 9 ifKD 1 99999999 ifKD 0 AVG KFAC NP Number Points in the Table 2 to 20 NUM PTS DATA HP 312 24 Appendix B Communications Frequency 1 20 L01 hasarangeof 0 000 tothe value of F02 minus 0 001 F20 h
22. tions to compute the flow rate and current frequency 6o cr flowrate Kfactor HP 312 Installation and Operation 15 Where Kfactor Is dependent on the Flow Calculation Method setting and is either the Average K Factor or the Linearized K Factor from the Frequency K Factor table FM Is the Flow rate Units setting of 0 1 or 2 Where 0 is for Seconds 1 is for Minutes and 27 is for Hours CF 16 the Correction Factor setting current 4mA omy Howat AF Where AF Is the 20 mA maximum Flow rate value If the calculated flowrate is greater than the AF setting the current will be set to 24mA to indicate an Over range condition After calculating the current the Microcontroller digitally sends the current information to the Loop Driver loop driver located on PCA183 uses the digital information sent to it by the Microcontroller to set the current of the loop The Loop Driver also supplies power to the Microcontroller The analog output response time to reach steady state due to a change in the flow rate is approximately two 1 8 seconds When flow stops the time for the analog output to return to 4 mA will be between 3 and 12 seconds depending on the Maximum Sample Time MST setting MST is adjusted using the DATA command where NB is a value between 1 and 80 The default MST setting is NB 1 Adjusting the MST is only recommended for low flow applications where t
23. unit has to be powered from external supply in order to be able to communicate Additional power for CAT3 communication circuitry is supplied by the RS232 serial port of the computer terminal COM port settings must be set as follows Baud Rate 2400 Data Bits 8 Parity None Stop bits 1 Handshaking None HOFFER HIT2A 301 Communications Cable Molex DB 9 0511100660 or Equivalent ES vDCI J 6DSR BR TRIS t tj D VDC2 i 552 DTR4 5 8 CTS OQ SIGCOM 5 3 29 NC Pin2 Pin 1 4 6 Wiring When installing CAT3 it is a good practice to use shielded cables for all input and output signals The shield should be connected to the earth ground lug on the CAT3 The shield on the opposite end of the cable should be left open This wiring practice is mandatory in order to comply with the requirements for Electromagnetic Compatibility as per EMC Directive 89 336 EEC of the Council of European Community HP 312 Appendix Default Configuration 19 Appendix A Default Configuration Factory default configuration FIELD Value DN 10000000 FC 0 Average KD 3 AK 1 00 NP 20 601 4999 981 F02 4999 982 F03 4999 983 F04 4999 984 F05 4999 985 F06 4999 986 F07 4999 987 F08 4999 988 F09 4999 989 F10 4999 990 F11
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