USER`S MANUAL - Hoffer Flow Controls, Inc
Contents
1. 14 5 2 Intrinsic Safety Connections 18 6 VALVE CONTROL amp DC POWER 19 7 INSTALLATION 21 7 1 Wall Mounting 21 7 2 Removing The Front Panel 22 7 3 The Main Electronics 24 7 4 Wiring 25 7 5 Terminal Designations 26 INDEX Q ere e ree re ere rr re 27 HP292 292 Introduction 1 1 INTRODUCTION The Model 314i Batch Controller accepts a pulse or frequency flow signal and automatically controls the batching of fluids via a one or two stage control valve The Batch Controller is intrinsically safe and can be used in hazardous areas provided it is connected as directed to approved flowmeters and control solenoids The Model 3147 is fully programmable with K factors decimal point positions valve delays and signal timeouts being programmed via the front panel switches Switches on the input board enable the input to be readily configured for most applications including turbine flowmeters paddlewheel flowmeters reed switches and Namur proximity switches The instrum2. Ex 94 C 8425X Type of Protection EX ia Group Temperature Class T4 at ambient temperature of 60 C When installing in hazardous areas the instrument must be installed according to the guidelines in Sections 5 amp 6 and in accordance with local wiring standards for installation in hazardous areas Flowmeter Inputs Entity Parameters on the flowmeter input enable connection to a wide range of approved sensors Input Parameters are Ui 24V I 20mA Pi 320mW Output Parameters are Uo 10 0V Io 9 0mA Maximum allowed external capacitance is 60 Maximum allowed external inductance is 1 5H DC Power Input and Switching Outputs Can be connected to LS circuits with the following maximum values per circuit Ui 28V 185mA Pi 1 3W HP292 Introduction 5 2 SPECIFICATIONS General Display Batch Total Accumulated Total Preset K factor Decimal Points Frequency Range Signal Type DC Power Input Battery Backup Type Function Outputs Outputs Switching Power Saturation Volts Isolation HP292 LCD continuously powered 7 digits with 10mm 0 4 high digits Displayed when the Accumulated Total button is pressed 5 digits with 8 5mm 0 33 high digits The pulses per unit of measure e g pulses gallon is programmable in the range 0 2 to 29 999 Decimal Point positions are fully programmable for batch total and preset 0 25Hz to 5KHz5KHz in tw
3. D DC Power Input 5 Decimal Point 12 Display 5 Display Contrast 24 E Entity Parameters 4 Example 13 External Power 19 F Flow Alarm 10 HP292 Flowmeter Input 14 Frequency Divider 12 Frequency Range 5 G Group 4 Intrinsic Safety Connections 18 Isolation 5 K K factor 5 Model Number 2 Mounting 6 Operating Temperature 6 Operation 7 Pneumatic System 20 PRESET 7 Prestop Quantity 12 Programming 11 Protection 6 R Reed Switches 14 Relays 19 RESET Switch 24 5 Scaling Factor 12 Signal Timeout 10 Simple Apparatus 18 Solenoids 19 Specification 5 Start Time 12 Starting 8 Stopping 8 Switching Power 5 Switching Threshold 14 Temperature 6 Temperature Class 4 Terminal Designations 26 Turbine Flowmeters 14 Wall Mounting 21
4. 03 1 Frequency Divider 0 500 CAL 04 1 One decimal place CAL 05 1 One second delay on full flow to stop pipe hammer CAL 06 10 10 litre preset 07 2 Two second signal timeout HP292 14 Flowmeter Input 5 FLOWMETER INPUT 5 1 General Connections The Model 3147 has an input conditioning circuit which will accept signals from most pulse or frequency producing flowmeters A 6 position DIP switch on the rear panel enables the input circuit to be configured for different signal types The input will interface directly to Turbine Flowmeters Open Collector Outputs Reed Switches Logic Signals Two Wire Proximity Switches The following pages give examples of interconnection to various signal outputs and a circuit diagram of the input is also provided For pulse or logic type signals the input switching threshold is 1 3 volts Hence the input signal must have a low voltage of less than 1 2 volts and a high voltage of greater than 1 4 volts Separate input terminals are provided for the coil input so that high inductance values can be handled while maintaining the intrinsic safety of the system For a coil the minimum input voltage is 40mV All inputs are protected for over voltage up to 25 volts HP292 Pulse Input Coil Input HP292 Flowmeter Input 15 3 3V 3 3V T Mn UK INPUT COMPARATOR 5 56 30 E 001 luF 40 d
5. S4 53 1 ag 150K 10K 52 100K 1O 10K H 20 S6 Must be open except with an external DC supply The Frequency Input Circuit 16 Flowmeter Input 1 MAG Coil eri Use shielded cable 2 Redi Pulse Pick up Pulse output V 12 28 Vdc x 0v 1 7 te ala lt 4 3 Redi Pulse Pick up Open Collector with 100 K ohm internal pullup resistor V 12 28 Vdc 8 OV i Bp 4 292 Switch Settings ON EN E EEE 1 6 eg Millivolt signal from Turbine 20mV minimum Switch Settings ON u ON EE E E 4 Squarewave CMOS or Pulse 5 Open Collector with 100 K ohm internal pullup resistor 6 Reed Switch with 100 K ohm internal pullup resistor Flowmeter Input 17 Switch Settings ON Eu Switching threshold voltage is 1 3 volts ON EE EE E E eg positive displacement flowmeters with reed switch outputs Note For a switch or reed input with contact bounce S4 can be switched This will eliminate the effect of switch bounce while limiting the input frequency to 200Hz HP292 18 Flowmeter Input 5 2 Intrinsic Safety Connections When installing the Model 3147 in hazardous areas the wiring and installation must comply with local installation standards The Model 3147 will connect directly to a turbine flowmeter or paddlewheel with
6. a certified 1 5 coil or other certified 1 5 sensors which produce a pulse output provided they do not exceed the following input parameters Ui 24V 20mA Pi 320mW The maximum allowed capacitance and inductance of the pulser or coil including cabling is Cext 60uF Lext 1 5H The internal capacitance and inductance of the Model 3147 seen on the input are negligibly small and maximum voltage and current produced by the Model 3147 on its inputs terminals 1 to 4 are Uo 10 0 volts open circuit Io 9 0mA short circuit Note that devices such as reed switches which can be classed as Simple Apparatus as defined in the CENELEC standard EN50020 can be connected to the Model 3147 without certification The Model 3147 has two pulse inputs a high impedance balanced input for coils and a pulse input for other devices It is not allowable to connect both inputs at the same time HP292 Valve Control amp DC Power 19 6 VALVE CONTROL amp DC POWER The Model 3147 will operate from an external power source between 12 28Vdc and draws no more than 8mA The instrument has internal battery backup which will power the instrument if DC power is interrupted but these batteries are not capable of powering the solenoids or sensors if they require external power Open collector outputs provide control to solenoids or relays and can sink up to 200mA Connection for Intrinsically Safe applications are given on the followin
7. MODEL 314i Field Mounted Batch Controller USER S MANUAL HP 292 May 1998 HOFFER FLOW CONTROLS INC The Turbine Flowmeter Company 107 Kitty Hawk Lane P O Box 2145 Elizabeth City NC 27906 2145 800 628 4584 252 331 1997 FAX 252 331 2886 www hofferflow com E mail info hofferflow com 292 1 HOFFER FLOW CONTROLS INC MAKES NO WARRANTY ANY KIND WITH REGARD TO THIS MATERIAL INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 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 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 number of each item to be connecte
8. ach have dual functions as described below STOP gt Front Panel Keys 3 1 1 Setting the PRESET Quantity The Batch quantity is programmed as follows Switch Action Display Comments Press PRESET The Accumulated Total together with the Preset quantity is displayed 1 2345 The most significant digit of the Preset quantity flashes indicating that it can be changed Press A 2 2345 Pressing the key will increment the digit The up arrow on the Stop key indicates to increment the digit Press gt 2 2 345 Pressing the gt key will change digit and enables the next digit to be incremented The right arrow on the RUN key indicates to change digit Press PRESET 22345 00 Pressing PRESET returns the instrument to the Run mode and batches can now be run Once programmed the Preset quantity will be retained in memory and will not alter until changed by the user HP292 8 Operation The Preset quantity can only be set while the instrument is in a non operational state such as when the batch is complete or has been cancelled 3 1 2 Starting a Batch To start a batch press the RUN key The Total will then reset to zero and provided there is flow the Total display will start counting upwards The batcher has two output transistors and these are switched on and off as described in Section 3 2 3 1 3 Stopping The process can be stopped at any time by pressing the STOP switch This is indicated by t
9. an absence of signal input If the Signal Timeout is set to 0 this function is disabled HP292 Programming 11 4 PROGRAMMING The Model 3141 is fully programmable with all parameters being stored in memory The Program Mode can be entered in one of two ways 1 By removing the lower cover strip 1 the dark gray strip along the bottom of the enclosure and replacing it the wrong side up This brings a small magnet on the inside of the cover strip in contact with a reed switch inside the instrument The program key is then pressed to enter the Program Mode 2 By removing the front section of the enclosure which contains the main processor board and batteries Once removed the PRESET key is pressed to enter the Program Mode The PRESET switch is used to step through the program CAL sequences and gt and A keys on the front panel are used to change and increment the flashing digits Up to seven CAL steps are accessible depending on which options are installed The CAL number is displayed on the lower display and the parameter is displayed on the upper display HP292 12 Programming 4 1 Program Steps Step CAL 1 CAL 2 CAL 3 CAL 4 CAL 5 CAL 6 CAL 7 HP292 Comment Scaling Factor whole numbers Scaling Factor digits after the decimal point The Scaling Factor is the pulses per unit of measure e g pulses litre pulses gallon etc The Scaling Factor can be programmed in the
10. ation 2 1 2 Intrinsic Safety Considerations 4 2 SPECIFICATIONS 5 1 5 Battery Backup 5 Outputs 5 Physical 6 3 OPERATION rere 7 3 1 Front Panel Operation 7 3 1 1 Setting the PRESET Quantity 7 3 1 2 Starting a Batch 8 3 1 3 Stopping 8 3 1 4 Accumulated Total 8 3 2 Batch Operations 8 3 2 1 Control Outputs 9 3 2 2 Signal Timeout 10 4 PROGRAMMING 11 4 1 Program Steps 12 4 2 Example 13 5 FLOWMETER INPUT 14 5 1 General Connections
11. d 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 HFC 9707 WARRANTY HOFFER FLOW CONTROLS INC warrants this unit to be free of defects in workmanship and materials provided that the unit was properly selected for the service intended properly installed and not misused Equipment returned transportation prepaid within 12 months after delivery of goods or 18 months from date of shipment for units destination outside the United States and is found by HOFFER FLOW CONTROLS inspection to be defective in workmanship or materials will be repaired or re
12. ent is housed in an attractive polycarbonate enclosure which is completely watertight A universal bracket is supplied as standard for wall mounting while an optional pipe mounting bracket is also available This instrument conforms 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 Emission Standard EN 50082 1 Residential Commercial amp Light Industry Environment Generic Emission Standard EN 50082 2 Industrial Environment In order to comply with these standards the wiring instructions in Section 7 4 must be followed HP292 2 Introduction 1 1 Model Number Designation Basic Model 314i Power Options 3 12 28 Vdc Mounting Type O No Cable Entry Holes 2 Wall Mount with Cable Glands 4 1 NPT Bottom Mount w Union 5 1 NPT Rear Mount w Union 6 2 Galvanized Pipe Bracket Options CE Compliant HP292 Introduction 3 12536551 PRESET 5341 Lj The Model 314 HP292 4 Introduction 1 2 Intrinsic Safety Considerations The Model 3141 is certified for use in hazardous areas to CENELEC standards Approval details are as follows CENELEC Approval
13. g pages For single style applications only Output 1 is required Specification for Outputs Maximum Current sink 200mA Maximum Voltage 30VDC Saturation Voltage 2 0VDC max across the outputs in the on state Isolation Both outputs are separately isolated HP292 20 Valve Control amp DC Power SAFE AREA HAZARDOUS AREA BARRIER 1 1 5 Barrier Uo 28 V maximum lo mA maximum Approved 1 5 Coll BARRIER 2 1 5 Barrler Uo 28 V maximum lo 185 mA maximum Po 1 3W Approved 1 5 Coll z Output 2 Example Barriers MTL 729P 4021 3021 3022 Pepperi amp Fuchs E KHUSISD IEx147 Cable Length lt 1 km Model 3147 KHD3 ISD Ex148 Batch Controller Intrinsically Safe Installation Solenoid Only certified intrinsically safe solenoids may be used for LS applications Because these solenoids have a relatively small coil they are only usually suitable for small line sizes and non viscous products Generally it is preferable to use a pneumatic system with the solenoid valves controlling air to a larger pneumatically controlled valve HP292 Installation 21 7 INSTALLATION 7 1 Wall Mounting A wall mounting bracket is supplied with each instrument The bracket should be attached to the wall using round head screws do not use countersunk screws The bracket is mounted with the tray section at the bottom The instrument is then attached
14. he Pause message displayed on the screen either flashing or solid Once the process has been interrupted in this way it can be continued by pressing the RUN key or the process can be aborted by pressing the STOP switch a second time 3 1 4 Accumulated Total During a batch run the Accumulated Total can be displayed by pressing the ACCUM TOTAL key In the non operational state i e when the batch is complete the ACCUM TOTAL key also functions as the PRESET key and enables the Preset quantity to be changed The Accumulated Total cannot normally be reset except by pressing the internal Reset button see section 7 3 Pressing this button will also reset all the setup parameters 3 2 Batch Operations HP292 9 The operation of the Batch Controller is shown below PAUSE Batch Quantity Run Stop Run Reached Run on state E x Output 1 _ i Transistor i tput 2 Start Time lt i i Quantity 3 2 1 Control Outputs The two output transistors can be set up to control a single valve or a dual valve with slow stop and or slow start Alternatively the second output can be used to control a pump The output operation is shown above A time delay between the Start and the time when Output 2 switches on can be programmed to provide a soft startup The delay can range from 0 no delay to 9 seconds A Prestop quantity i e the quant
15. ity to the end of the batch can also be programmed to provide a slowdown of flow at the end of the batch thereby enabling precise quantities to be batched The process can be stopped at any time by pressing the STOP key whereby both outputs will immediately switch off The process can then be aborted and the batcher reset by pressing the STOP key again or the process continued by pressing the RUN key HP292 10 Operation If the process is continued and the instrument was previously in the slow start or main control phases 1 e not the prestop phase the timer will be reset and a slow start will occur with a full time delay to ensure a correct start up The totals will not be reset and the batch quantity will remain unchanged 3 2 2 Signal Timeout The Signal Timeout period defines a time interval which is used to detect if the flow has stopped If there is no signal input for a time greater than the Signal Timeout period the flow is deemed to have stopped A Signal Timeout period detects the loss of signal midway through a batch when the outputs are on In this case the Batcher will enter a Flow Alarm condition and switch off the outputs The Flow Alarm condition is maintained until acknowledged by pressing the STOP switch The alarm condition is also signaled to the operator by the PAUSE message being displayed either flashing or solid The instrument enables the user to program a time interval of up to 99 seconds to detect
16. justed for optimum contrast Adjacent to this control is a RESET switch which can be used to reset the microprocessor Note that pressing this button will reset all Setup Parameters and set all totals to zero DISPLAY CONTRAST RESET BATTERY CONNECTOR o O N e zi z fE BATTERY gt 1 BATTERY e o BATTERY CONNECTOR The Main Electronics HP292 Installation 25 7 4 Wiring When connecting the Model 314i it is good practice to use shielded cable The shield should be connected to earth near the instrument The other end of the shield should not be connected In order to comply with the requirements for Electromagnetic Compatibility as per EMC Directive 89 336 EEC of the Council of the European Community this wiring practice is mandatory HP292 26 Installation 7 5 Q L on 11 12 HP292 Terminal Designations Coil Input Coil Input Pulse Input Pulse Input DC Power OV DC Power 12 to 28 VDC Output 1 Output 1 Output 2 Output 2 INDEX A Accumulated Total 5 B Batch Operations 8 Batch Total 5 Battery Backup 5 C Cable Entry 6 CAL Sequences 11 CENELEC Approval 4 Control Outputs 9
17. o ranges Switch settable for Sinewave 40mV P P minimum Open Collector Reed Switch or Pulse 12 28 Vdc at 8mA maximum Two lithium battery packs The backup batteries will power the instrument for up to 5 years if no DC power is provided The batteries will not power the sensor or solenoid outputs Two open collector outputs suitable for driving DC solenoids or external relays The outputs provide for one or two stage control of the flow 200mA 30VDC maximum 2 0Vdc max across the output in the on state Both outputs are separately isolated 6 Specification Physical Temperature Dimensions Mounting Protection Cable Entry Pipe Mounting Turbine Meter Adapter HP292 Operating 20 C to 60 C 97mm 3 8 high x 150mm 5 9 wide x 41mm 1 6 deep cable glands not included Universal Mounting Bracket supplied Pipe mount kit and adapters for mounting on turbines are also available Sealed to Nema 4X or IP67 standards By cable glands A galvanized metal bracket is available which enables the model 3141 to be attached to a 2 vertical or horizontal pipe An optional mounting stem is available for mounting the Model 3141 directly on turbine flowmeters which have a 1 MNPT boss 7 3 OPERATION 3 1 Front Panel Operation Three keys on the front of the instrument provide an easy and straight forward method to set up batches and control operations The three keys e
18. placed at HOFFER FLOW CONTROLS sole option free of charge and returned prepaid using the lowest cost transportation 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 return package and on any correspondence FOR WARRANTY RETURNS please have the following information available BEFORE contacting HOFFER FLOW CONTROLS 1 number under which the product was PURCHASED 2 Model and serial number of the product under warranty and 3 Repair instructions and or specific problems relative to the product FOR NON WARRANTY REPAIRS OR CALIBRATIONS consult HOFFER FLOW CONTROLS for current repair calibration charges Have the following information available BEFORE contacting HOFFER FLOW CONTROLS 1 P O number to cover the COST of the repair calibration 2 Model and serial number of the product and 3 Repair instructions and or specific problems relative to the product HFC 9707 CONTENTS 1 INTRODUCTION 1 1 1 Model Number Design
19. range of 0 2 29 999 Frequency Divider This determines the frequency range where 1 0 25Hz 500Hz 10 0 25Hz 5KHz Decimal Point for Total Display The total and preset quantity can be displayed with 0 1 2 or 3 decimal point places Start Time Delay The time in seconds 0 9 sec when Output 2 will switch on once the RUN key is pressed Prestop Quantity The quantity at which Output 2 will switch off before the end of the batch e g If the Preset quantity is 100 litres and the Prestop quantity is 2 litres Output 2 will switch off after 98 litres Signal Timeout A time period between 0 99 seconds during which if there is no flow measured the Outputs will both switch off and the PAUSE message will be displayed Programming 13 42 Example A flowmeter produces 20 538 pulses per litre and has a maximum flowrate of 150 litres minute It is required to batch quantities in batches of around 300 litres and to alarm if there is no flow once the batch has started To increase the accuracy of the batch a two stage valve will be used and the flow will be slow prior to the end of the batch to enable a more accurate cutoff At 150 the frequency is x 20 538 51 3Hz It has also been decided to reduce the flowrate 10 litres prior to the end of the batch The instrument is then programmed as follows CAL 01 00020 Scaling factor Whole numbers CAL 02 5380 Scaling factor Decimals CAL
20. to the bracket at the bottom with two screws see diagram below rom 1203551 mr 5341 STOP ACCUM CJ 5 TOTAL Pu HP292 22 Installation 7 2 Removing The Front Panel The front of the instrument is removed as follows 1 Remove both the top and bottom cover strips ie the dark plastic strips on the front by levering a screwdriver under one end 2 Undo the seven screws retaining the front Note that the screws should not be removed from the front panel as they are retained by O rings 3 Pull the front panel free from the housing Replacing the front panel of the instrument is the reverse procedure However ensure that the front panel is aligned at both connector points before tightening the screws HP292 Installation 23 orm 1253651 PRESET 95341 Tom 105 36571 mue 5397 292 24 Installation 7 3 The Main Electronics The front section of the housing contains the microprocessor batteries and display When replacing the lithium battery packs only one battery pack should be replaced at a time so that there is always one pack connected to power the memory It is also possible to adjust the display contrast via a small potentiometer on the board The DISPLAY CONTRAST control is shown below and this can be ad
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