Freqcon Full User Manual
Contents
1. The input scaling is used to convert the input sensor readings in volts mA etc into an engineering value representing the input for example Bar temperature flow rate etc It is also used to limit the range of the values The Low value of the sensor input on the left must be less than the High value however the engineering scale values on the right can have the high value less than the low value The Scales are displayed as below Low 0 0 Hz 0 0 High 10 0 Hz 100 0 The figures to the left show the input range which produce the scaled value shown on the right i e 0Hz will produce an engineering value of 0 and 10Hz will produce a value of 100 If the input is higher or lower than the values on the left they are clipped to those values An example of inversion is Low 0 0 Hz 20 0 kg s High 100 0 Hz 0 0 kg s which gives a reading of 20 0 kg s when the input is less than or equal to 0 0 Hz and 0 0kg s when the input is greater than or equal to 100 0 Hz The result of this scaling is then fed directly to the processing functions for example the Averaging or Linearisation functions Page 12 IIG 9509 03 FREQCON USERS GUIDE 5 1 3 Input Ranging The input signal is internally divided down to a manageable frequency range which ensures that the the highest accuracy is achieved This ranging can be fixed or allowed to Auto Range If the scales are set for a high maximum frequency then with the Fixed Range option s2. Mounting DIN Rail TS35 Orientation Any Connections Screw Clamp with pressure plate Conductor Size 0 5 to 4 0 mm Insulation Stripping 12 mm Weight Approx 150g Page 20 IIG 9509 03
3. been entered they should be saved by pressing the S key If any changes made need to be abandoned pressing the lt ESC gt key will abort the process Look Up Table The Freqcon can store a 21 point look up table to linearise the input signal When this option is selected a dialog box is shown allowing entry of the 21 input output values The input values are in the range set by the scale values in the Scale configuration box so if the input is scaled from 0 to 100 the input values should be in this range An example is shown below where the input has been scaled from 0 to 100 and the look up table converts the percentage into a flow rate in kg sec Output kg s SCuAanuwaan Square Root Extraction If the Square root option is selected the input value will be transformed to the Square root characteristic The maximum and minimum values will remain as set in the Scale configuration box The effect that this has on a signal scaled from 0 to 10 is shown below Square Root Ho ee A Any input values less than 0 0 will produce a value of 0 0 Page 14 IIG 9509 03 FREQCON USERS GUIDE Power 3 2 If the Power 3 2 option is selected the input value will be transformed to the Power 3 2 characteristic This type of linearisation is useful for the calculation of flow rate from rectangular and V notch weirs The maximum and minimum values will remain as set in the Scale configuration box The ef
4. replaced by the hide All option which performs the reverse operation The Configure option on the Main Menu enters the configuration mode Here the menu will disappear and a highlight will appear on the Input Tag Number configuration item This highlight bar can be moved around the screen by using the cursor keys Some configuration items are only available when certain options have been selected If they are unavailable then they will disappear from the screen and it will be impossible to move the highlight bar to that item Once the highlight bar is on the required item pressing lt Enter gt will allow that item to be edited There are several ways that this could happen Firstly if the item is a number this number can be edited using the numeric keys The number will be checked to see if it is within the allowed range and a message will appear if it isn t If the lt ESC gt key is pressed the number will not be changed and the editing will be aborted Secondly a new menu will appear which gives each of the options available for that item The required option is selected from this menu using the up and down cursor keys Some menus lead to a further menu with more detailed options Pressing the lt ESC gt key will always abort the menu operation Thirdly some items can be either on or off and if they are on a number must be entered For example the Rate Limit item can be switched off or it can be a value If this item is sele
5. the QuickStep value were set to 10 C then if the input value suddenly changed by a value greater than 10 then the averaging would have no effect and the input would follow the step change otherwise the signal would be averaged over the set time period The QuickStep value has the same effect if the step is increasing or decreasing Digital Filter The input can be fed into a Digital Filter which provides filtering of frequencies greater than about 1Hz whilst still retaining a fairly quick response time 5 1 4 2 Linearisation There are 6 options available for linearisation of the input signal None There is no linearisation of the input signal Polynomial A polynomial equation is used to linearise the input signal The polynomial can use any combination of the following powers 0 ps Wight 23 Si OT 8 x Vx x Ax x7 x x3 xf x5 x6 x x8 IIG 9509 03 Page 13 FREQCON USERS GUIDE If the polynomial option is selected a dialog box is displayed allowing the user to enter the coefficients for each of the available powers So for example if the required polynomial is y 10 95 2 3045Vx 0 546x 1 023e 5x then a value of 10 95 is entered against the Constant item a value of 2 3045 is entered against the x 0 5 item a value of 0 546 is entered against the x1 item and a value of 1 023e 5 is entered against the x6 item and all the other values are set to 0 0 Once the polynomial coefficients have
6. 3 Output Scaling The output scaling is used to map the input values onto the output range and to set the maximum and minimum output values In many cases this process will have been handled automatically by the software The Scales are displayed as below Low 0 0 0 0 V High 100 0 10 0 V The figures to the left set the input values which produce the output value shown on the right Le 0 will produce OV on the output and 100 will produce 10V on the output Another example is Low 0 0 Hz 1 0 V High 16 0 Hz 5 0 V which outputs 1V when the input is at 0 0 Bar and 5V when the input is at 16 0 Hz An example of inversion is Low 100 0 1 s 0 0 mA High 0 0 I s 20 0 mA which outputs 0 0 mA when the input is at 100 0 I s and 20 0 mA when the input is at 100 0 I s 5 3 Communications Configuration The unit can be configured at manufacture to use either an RS232 or an RS485 communications link If the RS4835 link is installed it is possible to connect up to 32 units on one communications line however every unit must be configured to have a unique address There is a slight complexity associated with setting the Comms Address as the PC software needs to know both the current address and the new address In this way it will address the Freqcon with the current address and send the command to set the new address The Freqcon responds that the command has been executed and from that moment will only respond to the new addre
7. FREQCON USERS GUIDE FREQCON FREQUENCY TO ANALOGUE CONVERTER Whilst every effort has been taken to ensure the accuracy of this document we accept no responsibility for damage injury loss or expense resulting from errors or omissions and reserve the right of amendment without notice Industrial Interface Research Ltd 2002 This document is issued by Industrial Interface Research Ltd and may not be reproduced in any way without the prior written permission of the company IIG 9509 03 Page 1 CONTENTS 1 INTRODUCTION 1 1 Hardware Features 1 1 1 Isolation Details FREQCON USERS GUIDE 1 2 Software Features 1 3 Smart LED 2 UNPACKING 3 WIRING DETAILS 3 1 Power Supply 3 2 Input Sensor 3 3 Analogue Output 3 3 1 Voltage Output NIDA A wn fs HRS AN a Error Bookmark not define 3 3 2 Current Source Output 3 4 Communication Connection 4 PROGRAMMING GUIDE 4 1 PC Software Installation 4 2 Using the Software 4 2 1 The Main Menu 4 2 2 File Operations Oooo o NI NX 4 2 3 Editing the Configuration 4 2 4 Programming the Freqcon 4 2 5 Reading from the Freqcon 4 2 6 Monitoring Current Values 4 2 7 Printing the Configuration 4 2 8 Additional Features 4 2 9 Quitting the Program 5 CONFIGURING THE FREQCON 5 1 Frequency Input Configuration 5 1 1 Input Options 5 1 2 Input Scaling 5 1 3 Input Ranging 5 1 4 Input Processing 5 1 5 Advan
8. Freqcon is changed it will be necessary to tell the program what address to use to talk to the unit This is described in more detail in the Section Communications Configuration below 5 2 Analogue Output Configuration The analogue output of the Freqcon can also be configured in several different ways and in 4 different modes of operation The output can produce a voltage output from 0 to 10V or a current output from 0 to 20mA The output value can be a re transmission of the input signal taking into account any averaging linearisation or rate limiting that has been applied it can also output the minimum or maximum recorded inputs or be preset to a fixed output value These options are explained below 5 2 1 Output Types The Output Type Menu is used to select either a Voltage output or a Current Source output Voltage There are 3 voltage options available 2 preset types 0 to 10V and 1 to 5V and there is an option to set a custom voltage output range If the custom voltage is selected the minimum and maximum outputs are set by using the Low and High scale values to the right of the signs The Low figure must be less than the high value Current Source There are 3 current source options available 2 preset types 0 to 20mA and 4 to 20mA and there is an option to set a custom current source output range If the custom option is selected the minimum and maximum outputs are set by using the Low and High scale values to
9. IG 9509 03 Page 11 FREQCON USERS GUIDE for the analogue output Pressing the lt ESC gt key will quit from this function but first the program asks if the current remote values should be stored in the Freqcon as default values 4 2 9 Quitting the Program To quit the program select the Quit option from the main menu A quick way to select the quit option is just to press the lt ESC gt key If the current configuration has not been saved to disk the program will inform the user and give an opportunity to save it if required 5 CONFIGURING THE FREQCON 5 1 Frequency Input Configuration The Freqcon is an extremely versatile device which can support many different types of input In addition the input value can be altered using averaging techniques linearisation methods and the rate of change of the input can be limited The Frequency input can also be set into an autoranging mode whereby the hardware is configured to give the unit the best time response for a wide variation in frequency input This is all described below 5 1 1 Input Options The Freqcon can have an Identity Tag Number entered for User records This is entered in the Tag section of the Input Configuration box The Freqcon can scale the input to reflect actual signal values e g a flow in kg sec a pressure in Bar or a temperature in C The units describing the input can be entered in the Units section of the Input Configuration box 5 1 2 Input Scaling
10. ced Input Options 5 2 Analogue Output Configuration 5 2 1 Output Types 5 2 2 Output Modes 5 2 3 Output Scaling 5 3 Communications Configuration 6 TROUBLESHOOTING 6 1 Unit is Completely Dead 6 2 Incorrect Reading 6 3 Unit Won t Respond to PC 7 SPECIFICATIONS Page 2 IIG 9509 03 FREQCON USERS GUIDE 7 1 Frequency Input 7 1 1 Input Types and Specification 7 1 2 Temperature Stability 7 2 Analogue Output 7 2 1 Maximum Output Values 7 2 2 Temperature Stability 7 3 Time Response 7 4 Communications Channel 7 5 Isolation 7 6 Power Requirements 7 7 Dimensions 7 8 Mountings IIG 9509 03 Page 3 18 19 19 19 19 19 19 20 20 20 20 20 FREQCON USERS GUIDE 1 INTRODUCTION 1 1 Hardware Features The FREQCON is an Intelligent Analogue to Frequency Converter It supports a wide range of signal inputs from hall effect transducer signals to 24V signals It also produces 2 types of analogue output voltage and mA source The instrument has a choice of either an RS232 or an RS485 communication port If the RS485 option is fitted the unit can be multi dropped allowing up to 32 units to share the same communications line The instrument is packaged in a very compact enclosure which can be mounted on standard DIN rail 1 1 1 Isolation Details The Freqcon has full 3 port isolation of 500V between the Input Stage Processing Comms Output Stage and PSU This is illustrate
11. cted a menu appears to select whether it should be activated or not and if it is the current value for the Rate Limit will appear and can be edited just like a standard value Again the lt ESC gt key can be pressed to abort the operation Once all the configuration items are edited as required the user should press the lt ESC gt key to return to the Main Menu It might be advisable at this point to save the configuration to disk 4 2 4 Programming the Freqcon Once the configuration has been set as required it can be programmed into a Freqcon simply by selecting the Program option from the Main Menu A dialog box will appear showing the progress If an error occurs this will be shown in the dialog box Pressing the lt ESC gt key will abort the programming however any changes which have already been sent to the Freqcon will still take effect Page 10 IIG 9509 03 FREQCON USERS GUIDE 4 2 5 Reading from the Freqcon If a Freqcon has been connected to the PC its configuration can be read by selecting the Read command from the Main Menu A dialog box will appear showing the progress and indicating if any errors have occurred Once the reading has finished the display will be updated to show the configuration This could then be saved to disk or re edited if required 4 2 6 Monitoring Current Values It is possible to monitor the Current live data direct from an attached Freqcon This is achieved by selecting the M
12. d below RS232 RS485 Configurable Communications Output Universal Stage Input Stage Input Supply uP Supply Output Supply 24 V Input The unit can be totally configured with very easy to use PC software and there is no need to set links or switches within the unit 1 2 Software The instrument can re scale the input signal average it or linearise it This value can then be re transmitted on the output clipped or inverted The maximum and minimum values of the signal are stored and can be accessed through the communications channel or transmitted on the analogue output The system communicates using the standard Modbus ASCII protocol allowing it to communicate with a range of SCADA packages Page 4 IIG 9509 03 FREQCON USERS GUIDE 1 3 Smart LED The unit has a Smart LED status indicator which has four modes of operation One flash every 2 seconds This indicates that the unit is healthy and functioning normally Quick Flashing An error has occurred This could simply be a power glitch If it is the unit will still be functioning correctly However if the unit is powered down for 5 seconds and then the power is re applied and the quick flashing continues the unit has developed a fault e LED On Continuously The Unit is malfunctioning LED Off Continuously Either the power supply is not connected properly or the unit is faulty 2 UNPACKING The instrument should be carefully inspected for sign
13. elected the hardware will switch in the required frequency divider and this will remain fixed However if the frequency were to go low the signal would still be divided and the time response of the unit would be reduced If the alternative option Auto Ranging is selected then the internal divider will adapt according to the applied input frequency thus keeping the response time to a minimum There are a few considerations with AutoRanging Firstly when a new range is being selected there will be no reading of the frequency input for 2 seconds Also if the input frequency increases by more than a factor of 50 in less than a couple of seconds the autoranging may fail and the reading will reduce to the minimum value The input will recover when the signal frequency decreases again 5 1 4 Input Processing The Input Processing Configuration box allows the user to configure averaging technique linearisation and rate limiting 5 1 4 1 Averaging There are 3 options for averaging of the input signal None The averaging can be switched off e Time Average The input can be averaged over a period of time which can be set from 0 2 secs to 3000 secs If this option is selected another option becomes available QuickStep This is an option which allows the input to follow a quick step response if the change between 2 values is greater than the QuickStep value The QuickStep option can be either switched off or set to value For example if
14. executed So for most users this will only have to be set once Setting the Current Address of a connected Freqcon This is achieved by pressing the lt ALT gt key together with the A key This tells the program what address to use to communicate with a Freqcon Freqcons can have their address set to any number from 1 to 254 however the default value is address 1 This function will probably be necessary only if several Freqcons are used in a multi dropped RS485 configuration Resetting the Peak and Valley values on a Freqcon This is done by pressing lt ALT gt and R at the same time When used a dialog box will appear on the screen informing the user that the Freqcon is being reset This function resets the Peak hold and Valley hold values to the current input value Setting the Remote control values on a Freqcon Pressing lt ALT gt and C together will run this function It is possible to configure a Freqcon to have a fixed value on its analogue output Before using this facility it will be necessary to read the current configuration from the Freqcon by using the Read command from the Main Menu If the connected Freqcon has any of the Remote Control outputs configured a dialog box will appear otherwise a message will inform the user that the Freqcon is not configured for Remote Control The dialog box will only show the options which can be controlled and new values are entered by typing a new value I
15. fect that this has on a signal scaled from 0 to 10 is shown on the next page EPower 3 2 HH BEE Any input values less than 0 0 will produce a value of 0 0 Power 5 2 If the Power 5 2 option is selected the input value will be transformed to the Power 5 2 characteristic This type of linearisation is useful for the calculation of flow rate from rectangular and V notch weirs The maximum and minimum values will remain as set in the Scale configuration box The effect that this has on a signal scaled from 0 to 10 is shown below Any input values less than 0 0 will produce a value of 0 0 5 1 4 3 Rate Limiting The input signal can have its rate of change limited to a preset value So for example if a rate limit of 0 5 Bar sec was set and the input signal changed from 5 to 10 Bar the rate limited value would increase at the rate of 0 5 Bar per second and would thus take 10 seconds to change from 5 to 10 Bar 5 1 5 Advanced Input Options The Advanced Options Configuration box allows the user to alter the Address of the Freqcon for multi dropped installations IIG 9509 03 Page 15 FREQCON USERS GUIDE Comms Address This option allows the Address of the Freqcon to be changed Enter the required address from 1 to 254 This is mainly used in systems where several Freqcons are being connected on one RS485 communications lead and each unit must have a unique address If the address of the
16. icon 1 unl Freqcon Programmable Transmitter Configuration Input Output Tag No Type 6 20 mA Source Mode Re Tx Units Hz Menu Low 0 08 Hz 6 00 mA High 100 00 Hz 20 00 mA New Scales Open Low 6 06 Hz 0 00 Hz Save High 100 00 Hz 100 00 Hz hide All AutoRanging ON Program Processing Read Average Over 1 66 secs print QuickStep 1 00 Hz Monitor Linearisation None Quit Rate Limit Off Advanced Comms Address 1 COM Address tn 811 95 The top line shows the version number and the configuration filename The bottom line is the HELP LINE which gives advice on what the current option means The 2nd from bottom line is the STATUS LINE which gives information on the active COM port the address to be used for communicating and the current date The screen is split left to right The left side of the screen holds the current configuration for the input and the right side of the screen holds the current configuration for the analogue and digital outputs These are divided by the Main Menu which is in the middle of the screen 4 2 1 The Main Menu The Main Menu is the central point of the program It is very easy to use The current option on the menu is highlighted Any other option can be selected by using the up or down cursor keys to select the required option or by pressing the highlighted capital letter in the required option Once the highlight bar is on the required option the function is act
17. ivated by pressing the lt Enter gt key There are several other menus in the software and they all work in the same way If the user needs to return to the Main Menu at any point in the program then by pressing the lt ESCAPE gt key one or more times the main menu will become available 4 2 2 File Operations There are 3 File operations New Open and Save New Clears the current configuration and sets all the items to their default values IIG 9509 03 Page 9 FREQCON USERS GUIDE Open Prompts the user to enter a filename from which to load a configuration Save Prompts the user to enter a filename so that the current configuration can be saved to disk The current filename is shown in the upper right hand corner of the display After the filename an asterisk may appear this signifies that the configuration has been modified and not saved to disk The configuration file will always be saved with an extension of FN1 even if another extension is specified in the Save dialog box 4 2 3 Editing the Configuration Firstly there are 2 views for the configuration When the program is executed the display will show empty boxes on the screen except for the Input box in the top left of the configuration screen However by selecting the show All option from the Main Menu the contents of all the boxes will become visible At the same time the show All option on the Main Menu will be
18. onitor option from the Main Menu A window will appear on the screen showing the current values of the Input and Output of the Freqcon The values are updated once every 2 secs and is indicated by a flashing to the right of the input value Pressing the lt ESC gt key will exit from the monitoring window 4 2 7 Printing the Configuration The current configuration can be printed simply by selecting the Print option from the Main Menu The user is asked if the output should be sent direct to a printer or to a disc file for printing later The printer must be able to print 80 columns and to accept the data as plain text No formatting commands are sent to the printer so it should be possible to use most types and makes of printer 4 2 8 Additional Features There are several items available which are not selected direct from the Main Menu All these functions are selected by pressing the lt ALT gt key together with another key As soon as the lt ALT gt key is pressed a reminder of the available options is shown on the Help line at the bottom of the screen The functions are Setting the Active COM port This is done by pressing the lt ALT gt key together with the P key This will display a dialog box to allow selection of the required COM port The program supports the standard ports 1 to 4 When the program is terminated the currently selected COM port will be stored and used automatically the next time that the program is
19. owing characteristics e Peak Output Voltage 1V minimum 30V maximum e Current Sink capability ImA minimum 7 1 2 Temperature Stability 80ppm C over operating range 7 2 Analogue Output 0 10V 0 03 0 06 0 20mA 0 03 6 0uA 0 06 7 2 1 Maximum Output Values Maximum Voltage Output 10 8 V 3 into a minimum of 500Kohm Maximum Current Output 22 0 mA 3 into a maximum of 1Kohm 7 2 2 Temperature Stability 80ppm C over operating range 7 3 Time Response The time response of the unit will vary depending on the configuration and whether communications are in progress with the unit but is substantially quicker than most intelligent transmitters For example with a 0 100Hz step input with 4 20mA output no processing options selected and no communications in progress the maximum response time would be 300msec for 90 response IIG 9509 03 Page 19 FREQCON USERS GUIDE 7 4 Communications Channel 1 RS232 channel 1 RS485 Channel Factory Fitted Option Baud Rate 9600 Parity Even Start Bits 1 Stop Bits 1 Protocol ModBus ASCII Protocol 7 5 Isolation Unit has full 3 port Isolation to 500V between Input Power Supply Input Outputs and Processor and Communication Channels The unit can also withstand transients of 2 5kV for 50 psecs 7 6 Power Requirements 16 to 32V dc at up to 150mA 24Vdc Maximum load Conditions 7 7 Dimensions 105mm x 76mm x 22 5mm H x D x W 7 8 Mountings
20. put The connections are shown The 0 to 10V signal is on Pin 5 The Output Gnd is on Pin 4 A Wire Link MUST be placed between pins 5 and 6 otherwise the voltage output will remain at OV 3 3 2 Current Source Output The Freqcon can produce a 0 to 20mA output signal The connections are as shown The 0 to 20mA signal is on Pin 6 The Output Gnd is on Pin 4 3 4 Communication Connection Gnd 0 10Volt 7 Wire Link The Communication signals are terminated on a 10 way IDC connector on the top face of the enclosure There are 2 types of signal available RS232 or RS4835 The standard unit is able to produce RS232 signals However the signals from this connector are not RS232 and must be used in conjunction with the standard Freqcon Communications cable which produces the RS232 signals ready for direct connection to a PC The Communications cable has a 10 way IDC connector at one end and a 25 way D Type connector at the other It may also be necessary to use an adapter to convert the 25 way D type into a 9 way D type for connection to some serial ports This is illustrated here Unicon Cable 25 Way D Type Female Rx 2 3 7 Gnd Adapter 25 to 9 Way 2 and 3 Swapped Male to Female IG 9509 03 Page 7 PC 25 Way D Type Male PC 9 Way D Type Male FREQCON USERS GUIDE The RS485 connections are terminated on a 10 way IDC connector on the top face of the enclosure The pin out of this connector i
21. s of damage which may have occurred in transit In the unlikely case that damage has been sustained please retain all packaging for our inspection and contact your supplier immediately The instrument comes with the following items as standard 1 Freqcon Smart Frequency to Analogue Converter If Communications Cable is Ordered 1 PC Communications Cable terminated with 25 Way D Type Connector If PC software ordered 1 3 5 Floppy Disc containing Smart PC Software If Full User Manual Ordered 1 A4 Bound User Manual IG 9509 03 Page 5 FREQCON USERS GUIDE 3 WIRING DETAILS The Freqcon is housed in a compact DIN rail mounting enclosure with 12 terminals arranged in 4 rows of 3 terminals Two rows are at the top of the front panel and 2 rows are at the bottom The sensor input terminals are on the second from bottom row and the power supply and analogue outputs are on the top terminals 3 1 Power Supply The connection for the Power Supply is made to pins and 2 as shown 3 2 Input Sensor The Freqcon can accept a wide range of signal levels for the frequency input However the same terminals are used whatever type of signal is applied The Frequency Signal is connected to pin 9 The Signal Ground is connected to pin 7 Frequency Signal T Signal Ground Page 6 IIG 9509 03 FREQCON USERS GUIDE 3 3 Analogue Output 3 3 1 Voltage Output The Freqcon can produce a 0 to 10V out
22. s shown below IMPORTANT NOTE No connection must be made to any of the other pins on this connector RS485 A Pin 4 RS485 B Pin 6 Pin 9 Gnd When connecting several Freqcons on one communications loop all the RS485 A lines should be connected together and all the RS485 B lines should be connected The Gnd lines should be used as a shield It may also be necessary to terminate the communications cable with a 120 ohm resistor across lines A and B The connection made to a PC through the RS485 connection is half duplex that is data can only travel in one direction at a time 4 PROGRAMMING GUIDE 4 1 PC Software Installation The software is supplied on a standard floppy disc The first thing to do is install the program All commands below are followed by the lt ENTER gt key Insert the floppy disc At the C prompt type a At the A prompt type install The automatic installation routine will then install the required files onto the hard disc in a directory specified by the user This working copy should be the only one that is used with the master disc stored safely in case the software needs to be re installed Page 8 IIG 9509 03 FREQCON USERS GUIDE 4 2 Using the Software To run the software type FREQCON at the DOS prompt A title screen will be displayed and pressing any key will then display the main screen This is shown below Fregcon 1 66B Industrial Interface Research Ltd ci un
23. ss To perform this operation on the PC software the current address of the Freqcon is set using the lt ALT gt A command The current address is shown on the Status Line near the bottom of the screen The new address is then set in the Advanced Options configuration box This configuration must then be programmed into the Freqcon It is then necessary to change the PC software current address using lt ALT gt A again if you wish to communicate with the Freqcon 6 TROUBLESHOOTING 6 1 Unit is Completely Dead Check that Power Supply is Connected correctly e Check that Supply is correct voltage IIG 9509 03 Page 17 FREQCON USERS GUIDE 6 2 Incorrect Reading Check that Sensor is wired correctly Check that Input Scaling is as required Check that Linearisation has not been set incorrectly Reading may respond very slowly if Rate Limited Reading may respond very slowly if averaged over a long time period The reading may be incorrect if large frequency changes occur quickly with the AutoRange option selected The reading may be incorrect if the Fixed Range option is selected and too high a frequency has been connected Check that the applied frequency signal is within the set ranges voltage limits and frequency limits for the Freqcon If unit is multi dropped check that PC is addressing correct unit 6 3 Unit Won t Respond to PC Check that PC is using correct COM port see Status Line Check that PC is
24. the right of the signs The Low figure must be less than the high value 5 2 2 Output Modes There are 4 modes that the analogue output can be set to Re Transmit Valley Hold Peak Hold and Remote Control Re Transmit Input Value This option takes the value from the input and sets the output value according to the scaling selected If any processing has been performed on the input value this will be included in the value passed to the output stage Itis possible to limit the range of the output signal and even invert it This is described in Section Output Scaling below Valley Hold This option monitors the value from the input and stores the minimum recorded value and sets the output value according to the scaling selected If any processing has been performed on the input value this will be included in the value passed to the output stage It is possible to limit the range of the output signal and even invert it This is described in Section Output Scaling below e Peak Hold This option monitors the value from the input and stores the maximum recorded value and sets the output value according to the scaling selected If any processing has been performed on the input value this will be included in the value passed to the output stage It is possible to limit the range of the output signal and even invert it This is described in Section Output Scaling below Page 16 IIG 9509 03 FREQCON USERS GUIDE 5 2
25. using correct address see Status Line Check that Comms Cable is securely fastened to PC and Freqcon Check that Freqcon is correctly powered Check that the Frequency applied is not too high Check Freqcon Status LED If 1 flash every 2 seconds Unit is OK If quick flashing Error has occurred This could simply be a power glitch Power down wait for 5 seconds and re apply power If quick flashing continues contact your supplier If LED is ON continuously Unit is malfunctioning contact your supplier If LED is OFF continuously Either the power supply is not connected properly or unit is faulty 7 SPECIFICATIONS Operating Temperature 0 to 40 C Specifications 20 C 7 1 Frequency Input The Frequency Input is divided by an optimal amount and sampled with a resolution of 1 33333 Sec Maximum Frequency 1MHz Accuracy Better than 0 08 of reading Page 18 IIG 9509 03 FREQCON USERS GUIDE 7 1 1 Input Types and Specification 1 Volt Free Contact 2 Open Collector with following Characteristics e Current Sink capability ImA minimum e On voltage at ImA sink current 0 25V maximum e Off state voltage rating 6V minimum 3 Logic with following characteristics Includes 5V 12V and 24V logic e Logic 0 Voltage 0 25V maximum 30V minimum e Logic 1 Voltage 1V minimum 30V maximum 4 Inductive Pick up with 1V minimum peak output voltage 5 DC coupled bipolar waveform generator with foll
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