PD260 Enhanced Series Inductive Loop Vehicle Detector USER
Contents
1. Setting RELAY Presence Detect Fault a L w Pulse Detect J UnDetect T Fault RELAY AB Logic FWD AB Logic REV Pulse Width 50ms C 150ms H 250ms n 500ms 750ms RELAY TIME 900ms 1sec 2sec J Uu Delay Output Osec off 100ms 250ms RELAY 500ms DELAY 1second D J 2seconds 5seconds 10seconds RELAY Polarity fail safe secure 304UMO0002 Rev 01 PD260 Enhanced Series User Manual Page 15 of 45 3 2 5 1 Presence Relay RELAY As mentioned above after selecting which relay and channel to affect the user has the option of selecting a presence or pulse output Navigating into the presence menu gives the option to output T L T for a detect the presence of a vehicle or the occurrence of a fault This means that the relay will produce an output for the entire i duration of the event In the case of a vehicle presence this means I there will be an output from the arrival of the vehicle over the loop until it has left the loop Presence outputs act in a fail safe manor irrespective of polarity in that a relay set to vehicle detect presence will also produce an output if the channel goes into fault Refer to section 3 2 5 5 for the polarity of outputs for all presence relay cases 3 2 5 2 Pulse Relay RELAY Navigating into the pulse menu gives the option to output a pulse in the event2. The stats sub menu is for clearing the statistical information of the detector used in the diagnostics menu The values reset are the max and min values as well as the channel and AB logic counts and the recovered from fault state Clearing the stats can also be achieved by power cycling the unit The detector automatically tunes to the inductive loop connected to it when the power is applied whether on initial installation or after any break in power supply Should it be necessary to retune the detector the retune sub menu provides the ability to re initiate the automatic tuning cycle If there is a vehicle on either of the loops when a retune is requested on that loop it will be tuned out Every setting change done by the user is saved when the unit loses power For this reason this Factory Reset sub menu restores all the settings to the factory defaults for the specific model after asking for confirmation The powerfail setting may be toggled on and off via this selection in the reset menu Off by default this setting is designed to retain the memory of a vehicle on the loop in the event of a power fail situation This is designed specifically for fail safe situations to retain the output state and prevent a glitch on the outputs for a power failure As such when the power is restored the detector will not retune but return to the detect state prior to the power failure If a vehicle was on the loop during the power failure
3. Green LCD diagnostics displays Selectable through the menu structure for Resetting Channel Statistics Retuning Channels Resetting settings to factory default Loop isolation transformer gas discharge tubes and Zener diode clamping on loop input Selectable to have infinite memory retention of detector state on power failure provided certain criteria are met Refer to section 3 2 7 1 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 6 of 45 2 2 Electrical Data Power requirements 120 Vac 10 48 to 62Hz PD261 230 Vac 10 48 to 62Hz PD262 Requirement 1 5 VA Maximum 230 V 12 V 10 to 24 V 10 DC AC 48 to 62Hz PD264 Requirement 1 VA Maximum O 12 V Relay Contact Rating Relays rated 1 A Q 70 Vac 0 6A O 100 Vpc Maximum recommended voltage 70Vac 100Vpc Optional Opto Isolated 50mA 9 30Vpc For ambient temperatures above 60 C De rate the relay maximum current as per graph below Relay Contact Current De rating 0 714 TT FEI E 8 o 8 D g Maximum Relay Contact Current fimps Ambient Temperature degrees Celcius 2 3 Environmental Data Storage Temperature 40 C to 80 C Operating Temperature 30 C to 70 C as a function of the LCD below 20 C the LCD response time is affected Humidity Up to 9526 relative humidity without condensation Circuit protection Conformal coating over the PCB and all components IP Rating IP30 This product M
4. the detector will give a pulse output on detection of a vehicle Pulse on undetect the detector will give a pulse output when the vehicle leaves the loop Pulse on fault the detector will give a pulse output when the channel goes into fault Pulse on AB Logic in the forward direction the detector will give a pulse output when a valid AB Logic forward direction is detected This is when a vehicle travels over loop 1 then loop 2 without losing loop 1 before reaching loop 2 e Pulse on AB Logic in the reverse direction the detector will give a pulse output when a valid AB Logic reverse direction is detected This is when a vehicle travels over loop 2 then loop 1 without losing loop 2 before reaching loop 1 For both AB Logic conditions no further outputs will be generated until the vehicle has left both loops even if the vehicle reverses off the loops In the event of a loss of power with the powerfail setting on any remaining vehicles must leave the loops before any new AB logic conditions will be generated Pulse outputs are fail secure outputs and will not operate if a failure occurs On the PD260 the relays are configured as presence outputs and so are fail safe outputs by default This means that if the outputs are changed to pulse outputs while a pulse will not occur on a fault unless set to fault it will still output if power is lost As such configuring them for pulse outputs requires the user to change the polarity to
5. FREQ The frequency sub menu shows the current frequency in kilohertz as DIAG well as the maximum and minimum frequency the loop has reached including the changes from going into detect and environmental changes The frequency is inversely proportional to the inductance so low inductances will show high frequencies while high inductances will show low frequencies Depending on the frequency setting the displayed values could be from 12 to 80 kilohertz in the 20 to 1500uH 39 18 1385 1426 304UMO0002 Rev 01 PD260 Enhanced Series User Manual Page 20 of 45 SENS DIAG The sensitivity sub menu shows the current percentage change in inductance Detects are shown as negative values and anti detects are shown as positive values The max value will show the largest percentage change noted while the min value will show the smallest peak value of any one vehicle detected SENS DIAG AL L SENS DIAG ER gl SENS DIAG ogs DIAG NOISE The noise sub menu shows the instantaneous noise measured over a short period of time Due to the sporadic nature of noise it is difficult to determine the difference between true noise and faster moving vehicles which produce large detect levels As such the max value may show a larger number as a function of some vehicle detect properties Simply reset the statistics and monitor the max without vehicles passing over the loop to get a better ind
6. detect and is used in the paragraphs below When the presence mode is set to permanent the relay will indicate vehicle presence for an unlimited period of time However on limited presence the detect time will be dependent on the change of inductance The presence time on the limited presence setting will be approximately 1 hour for a 196 L L Refer to section 3 2 4 for more information on presence modes The presence outputs are known as fail safe outputs This implies that in the event of a power failure or loop failure the relays will produce detect outputs By default the PD260 relays are configured as presence outputs and so are fail safe outputs Fail Secure outputs are available on request MOQ applies Uehicle ON Loop eessen S Vehicle OFF Loop Green LED OFF l Relay Contact c s ee SR BB ven N Relay Contact OPEN ien Pouer Tuning Vehicle Vehicle Suitched Complete Enters Leaves ON Loop Loop The above picture illustrates the states of the indicator LEDs and a typical fail safe presence relay For more information on all the possible presence output relay states refer to section 3 2 5 6 304UMO0002 Rev 01 PD260 Enhanced Series User Manual Page 27 of 45 4 3 2 Pulse Output 4 4 When configured as a pulse output the relay will output a pulse according to the pulse duration setting default is 150ms The output may be set to be any of the following Pulse on detect
7. mm How far below the surface is the loop mm Shape of loop Number of Turns Size of wire used mm or AWG Type of wire insulation Thickness of insulation mm How far below the surface is the loop mm Are there any metal objects below the loop such as concrete reinforcing water pipes etc if yes please give details 304UMO0002 Rev 01 PD260 Enhanced Series User Manual Page 42 of 45 Are there any power cables below these loops Yes No If yes please give details Are there any other loops in the area Yes No If so how many and how close to these loops are they m FEEDER CABLE DETAILS Channel 1 Channel 2 Length of feeder cable m Length of feeder cable m Size of wire used mm or AWG Size of wire used mm or AWG should be 1 5 mm or larger Type of wire insulation Type of wire insulation Thickness of insulation mm Thickness of insulation mm Type of feeder cable used screened armoured multicore etc In the feeder cable how many twists per meter are there should be more than 20 per metre Are there any other cables close to these feeder cables Yes No If yes please give details FEEDER CABLE and LOOP DETAILS Channel 1 Channel 2 Is the loop and feeder cable one continuous Is the loop and feeder cable one continuous piece of wire or is there a joint between the piece of wire or is there a joint between the loops and the fee
8. 4 Channel 1 Loop pair Yellow 5 Channel 2 Loop Twist this Yellow 6 Channel 2 Loop pair Grey 7 Relay 2 N O Contact Grey 8 Relay 2 Common Contact Green Yellow 9 Earth White 10 Relay 1 N O Contact White 11 Relay 1 Common Contact 6 3 PD264 Enhanced Series Detector English 11 pin connector wiring for PD264 DETECTOR Order number 304FT2004 302FT0041 WIRING HARNESS Pin No Function WIRE COLOUR Red 1 12 24V AC DC 10 Black 2 45 65 Hz 200 mA max Blue 3 Channel 1 Loop Twist this Blue 4 Channel 1 Loop pair Yellow 5 Channel 2 Loop Twist this Yellow 6 Channel 2 Loop pair Grey 7 Relay 2 N O Contact Grey 8 Relay 2 Common Contact Green Yellow 9 Earth White 10 Relay 1 N O Contact White 11 Relay 1 Common Contact WARNING 10 The wiring harness wire colour to PIN No assignment only applies to the stated wiring harness Part No Other wiring harnesses will have different wire colour to PIN No assignments 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 35 of 45 7 APPLICATIONS The PD260 Enhanced Series dual channel detectors can be used in a variety of applications in the parking and door gate environments To arm card readers and ticket dispensers As a barrier gate door closing detector As a barrier gate door opening detector Free exit To generate pulses for vehicle counting As a logic unit to determine the direction
9. 5 mm The feeder is twisted to minimise the effect of electrical noise Joints in the loop or feeder are not recommended Where this is not possible joints are to be soldered and terminated in a waterproof junction box This is extremely important for reliable detector performance Other forms of joins such as those available in kits where the joint is properly sealed against moisture are also permitted Sensing Loop Geometry NOTE 1 The circumference of the loop must not exceed 30 m 2 The area of the loop must not exceed 30 m and must not be less than 1 m 3 The loop must be constructed as detailed below Sensing loops should unless site conditions prohibit be rectangular in shape and should normally be installed with the longest sides at right angles to the direction of traffic movement These sides should ideally be 1 metre apart Loops operating from the same detector module can share a common slot along one of the longer sides if so required This type of configuration could be applied in a direction logic application The maximum separation permitted for this application is 1 metre ensuring that a vehicle can straddle both loops simultaneously in the required direction of travel The only factor which governs maximum separation between loops in all other applications is the feeder length with 100 metres being the maximum recommended length The length of the loop will be determined by the width of the roadway to be monit
10. Rev 01 PD260 Enhanced Series User Manual Page 10 of 45 As a general rule the detector connected to the inductive loop with the greatest inductance should be set to operate at the lowest frequency Setting 8 Highest There are eight manual frequency shift selections to choose from numbered from 1 to 8 with 1 producing the lowest frequency and 8 the highest Due to the non linear nature of the oscillator the higher selections produce more of a shift than the lower ones When the frequency setting is altered the operating frequency of both detector channels shifts since the channels have a common oscillator Selecting any one of these manual settings will put the detector into manual frequency selection and retune the channels to that setting Each setting will show whether it will increase or decrease the current frequency if selected by way of an arrow on the far right This is shown by the examples on the left The current setting will still be reflected with the left facing arrow When AFS is on the selected frequency will still be indicated by the arrow At each extreme of high frequency and low frequency there will be some settings which don t allow one or more of the channels to tune as the frequency shift pushes the frequency out of the acceptable operational range It is possible for the operational frequency to be sufficiently high or low that none of the selections are tuneable In this situation the loo
11. Undetect Detect Open circuit Short circuit or Indeterminate Inductance Change for each vehicle type Use the maximum sensitivity reading and reset the statistics between each reading Vehicle Type Channel 1 Inductance Change Channel 2 Inductance Change Bicycle AL L AL L Motorbike AL L AL L Car AL L AL L SUV AL L AL L Articulated truck AL L AL L 5 Ton Tip Truck AL L AL L Forklift AL L AL L Other type Please specify AL L AL L Comments 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 45 of 45
12. of a detect an undetect or a fault This means that the relay will produce an output on the set event but only for the duration set under pulse width After that duration the output ends and there will be no further output until the next event JL Pulse outputs act in a fail secure manor irrespective of polarity in that a relay set to pulse on detect will not produce an output if the channel goes into fault Refer to section 3 2 5 6 for the polarity of outputs for all pulse relay cases 3 2 5 2 1 Relay Pulse Width Under the pulse sub section of the relay menu pulse widths range AAT ME from 50ms to 2seconds and can be different on each relay SEC C Short pulses are used in responsive systems where higher speed outputs can be individually processed or limited to a shorter period of 4 T time than the time the vehicle remains over the loop Longer pulses IL may be used where the output required is longer than the time the vehicle remains over the loop 3 2 5 3 Relay Output Delay Filter RELAY TIME From the relay menu the delay time filter setting ranges from zero off to 10 seconds and allows the output to be delayed accordingly DELAY SEC By setting a non zero delay the output delay feature is turned on J Small unwanted objects may be filtered out as a vehicle has to be Un present over the loop for the full duration of the delay in order to produce an output The delay time may be applied on any sensit
13. proportional to the size of the detect level The larger the detect level the longer it will take to tune out the vehicle and the smaller the detect level the sooner it will tune it out The presence mode can be toggled between permanent and limited presence via the presence menu In addition to the mode selected an overriding time out may be set which is able to operate in both modes The time out selection ranges from O off to 60 minutes For example if limited presence is selected and a time out is set then for a small enough detect the vehicle may be tuned out before the time out and for a large enough detect the time out will expire first tuning out the vehicle In this way subsequent vehicles travelling over the loop may be detected So too if permanent presence is selected and a time out is defined the detector will hold the presence of the vehicle until either the vehicle leaves or the time out expires Each channel may have an independent presence mode and time out setting It should be noted that a time out is typically used in conjunction with limited presence to ensure a worst case or longest time period that a vehicle parked over the loop could prevent further events being detected However it can also be used with permanent presence to prevent the loss of the detect before the time out expires in the case of smaller detect levels or very slow moving vehicles NOTE The time out should NOT be used in safety applicatio
14. their operation and T ii H 3 providing diagnostic information Additionally statistical information L such as the min and max values the number of vehicles counted per channel and the number of AB logic events is provided The following parameters may be verified using the diagnostics e Loop status Display the actual loop operating frequency and magnitude of the current change of loop inductance AL L as well as signal and noise levels e Sensitivity Display the minimum and maximum changes of inductance AL L that caused a detect since the statistics were last cleared e Channel counts Display the number of vehicles detected This historical information is valuable for providing information about intermittent faults It is highly recommended that after installation of a detector or if the loop has been changed in any way that the diagnostics is used to verify the correct operation of the detector A record of the readings should be kept so that if there is a problem in the future a comparison can be made to identify what has changed The form in Appendix C could be used to record these readings Historical Information is cleared each time power is reset or from the reset menu Refer to section 3 2 7 for more information The sub menus for diagnostics prompt the user which channel s information to display and are as follows examples given below are random and not related to absolute maximum or minimum values
15. 04UMO0002 Rev 01 PD260 Enhanced Series User Manual Page 39 of 45 APPENDIX B INSTALLATION OUTDOORS Appendix B 1 IEC 60950 22 2005 Outdoor cabinet If the PD260 Enhanced Series Detector is to be installed outdoors it must be installed in a cabinet housing that complies with the requirements of IEC 60950 22 2005 for a minimum of pollution degree 2 Appendix B 2 IEC 60950 22 2005 Northern Europe To achieve outdoor operation down to 50 C as required by IEC 60950 22 2005 for Northern Europe Finland Norway and Sweden a heater with a thermostat must be included in the cabinet that houses the PD260 Enhanced Series Detector Appendix B 3 IEC 60950 1 2005 Overvoltage Category If the unit is likely to be exposed to transient overvoltage greater that IEC 60950 1 Overvoltage Category II additional protection must be provided external to the unit on the supply lines 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 40 of 45 APPENDIX C REQUEST FOR TECHNICAL SUPPORT FORM For Technical support please fill in the form below and send it to your supplier It is recommended that at installation you complete this form as a record of the Installation If there is a problem later on you can identify what has changed For locating faults in Inductive Loop Vehicle Detector installations it is highly recommended that you use the on board diagnostics Refer to section 3 2 6 for details for more information Contact De
16. 8nSIIIVIty ia 13 3 2 3 1 Automatic Sensitivity Boost ASP 13 32 4 PIOSCNCE C 14 329 MEN CIT 15 3 2 5 1 Presence Pelay C 16 3 2 5 2 gU TNT 16 32 5 2 1 Relay Pulse Width wicca ii ii ii 16 3 2 5 3 Relay Output Delay Filter ovio dee aeaa Ai uia se oua occae 16 3 2 5 4 Qutput EE 17 3 2 5 5 Relay Output State Summary for Presence sse 18 3 2 5 6 Relay Output State Summary for Pulse sse entes 19 REZO DIAGHOSTICS 55335 ts eee c e e oe het eoo etes e te te e E Ts 20 3 2 6 1 Diagnostic fault display information esent 23 A gt sss oec teo e heo eh tic t eee 24 3 2 7 1 POWer falle oet otto t eto te ett atit ett ote 24 3 3 From SR ne ler e EE 25 PRINCIPAL OF OPERATION cic iii ii fa 26 4 1 Detector Purings 2 33 x B a uta 26 42 jDetector Sensitiviti coser plot tecum tA dale Ce LLL a eee d 26 4 3 TYPES Or UU nts se Lc Liao mea AP sepe cet 27 4 9 1 Presence OUP U EE 27 4 9 2 Pulse OutpUEbz EE 28 4 4 RESPONSE TIMES stie ote ate n Lone ten es 28 INSTALLATION GUIDE a 29 5 1 Product Safety Requirements coc i pe ret e o t it rea e ERE e I Ee EE ape D Eee LER PUR RR 29 5 2 Operational Constraints tienen tidad dad 29 5 2 1 Environmental Factors to Consider sessi sienne either 29 5 2 2 e 30 5 2 3 sinister Em 30 5 3 Loop and Feeder Material Specification eee en
17. 9LF0006 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 5 of 45 2 1 TECHNICAL DATA Functional Data Tuning Self tuning range Sensitivity Frequency Output Configuration Pulse Output Duration Filter Delay Presence Mode Presence Time Drift Compensation Rate Response Times Visual Indications Reset Surge protection Power Fail Fully Automatic 20 uH to 1500 uH Fifteen step adjustable on the LCD menu Ranging from 0 01 AL L to 5 AL L ASB Automatic Sensitivity Boost selectable Eight step adjustable on LCD menu 12 80 kHz Frequency determined by loop geometry AFS Automatic Frequency Selection selectable 2 output relays ER output optional User configurable for Presence on detect or fault Pulse on detect undetect or fault Pulse on AB logic forward or reverse Normally Open N O contacts Opto Isolated outputs are available on request MOQ applies Eight step selectable on the LCD menu Ranging from 50ms to 2seconds Default set to 150ms Eight step selectable output filter Ranging from 100ms to 10seconds Default is OFF Permanent or Limited to approximately 1 hour for a 196 AL L Eight step selectable on LCD menu Ranging from 30seconds to 60minutes Default is OFF Approx 1 AL L per minute 200 300 milliseconds subject to sensitivity level and level of detect as well as speed of vehicle over the loop 1 x Power Status LED Red 2 x Channel Status LEDs
18. CD Menu system on the front of the enclosure 304UMO0002 Rev 01 PD260 Enhanced Series User Manual Page 26 of 45 4 3 Multiple sensitivity levels have been provided in the PD260 Enhanced Series Detector to cater for a wide range of parking and vehicle access control applications The detection of small unwanted objects such as bicycles and trolleys may be eliminated by selecting lower sensitivity levels whilst high bed vehicles and vehicle trailer combinations will not lose detection by using Automatic Sensitivity Boost ASB option ASB operates as follows When ASB is disabled the undetect level is dependent on the sensitivity setting of the detector Hence as the detector is made less sensitive the undetect level will reduce accordingly When the ASB is enabled the undetect level is fixed irrespective of the sensitivity setting and will be equivalent to the undetect level when the sensitivity is on maximum setting Types of Output Each relay output may be configured to be either a presence or pulse output and may be set to operate on either channel Refer to section 3 2 5 for more information on how to set the outputs 4 3 1 Presence Output When a relay is configured as a presence output it will produce a continuous output during the presence of a vehicle over the inductive loop or during the presence of a fault depending on whether configured as presence on detect or presence on fault from the relay menu Default is presence on
19. HEAD OFFICE VCCE Office Park 170 Peter Brown Dr Pietermaritzburg 3201 South Africa Tel 27 33 260 2700 Fax 27 33 260 2701 FACTORY 32a Wiganthorpe Rd Willowton Pietermaritzburg 3201 South Africa Tel 27 33 345 3456 Fax 27 33 394 6449 www nortech co za info amp nortech co za INOF2 TECH INTERNATIONAL PD260 Enhanced Series Inductive Loop Vehicle Detector USER MANUAL NORTECH INTERNATIONAL PTY LTD All rights reserved Copyright O 2012 Document Number 304UMO0002 01 Date of Issue June 2012 This document is for information only and unless otherwise indicated is not to form part of any contract In accordance with the manufacturer s policy of continually updating and improving design specifications contained herein are subject to alteration without notice Table of Contents 1 2 3 4 5 INTRODUCTION pee O 5 TECHNICAL DATA ee iet eter nitentes e LUT 6 2 1 Functional Data TTT 6 2 2 Electrical Data nd REEL Ai 7 23 Environmental Datan nusiima ie 7 2 4 Mechanical Data care ie EE do ite e REL did 8 2 5 Approvals itecto niet etti edt rent coe ie ed omui E 8 OPERATING PROCEDURE 5 6111corier a id 9 eli Hardware Set U piss ices D teen dtu ait estu o C E E ME T 9 32 COD Menu System 3s o O 9 3 2 1 ie ER TE eben PEBRREEPPD PMID 10 3 22 Frequency EE 10 3 2 2 1 Automatic Frequency Selection AF 12 3 2 9 O
20. UST be installed in an enclosure 304UMO0002 Rev 01 PD260 Enhanced Series User Manual Page 7 of 45 2 4 Mechanical Data Housing Material Mounting Position Connections Size of Housing ABS blend Shelf or DIN rail mounting 11 pin Submagnal JEDEC No B11 88 78mm High X 41mm Wide X 80mm Deep m 80 mm m 40 6 mm d E q E sl z dk e 2 5 Approvals CE Regulations EN 301 489 3 Equipment Type III Class of Equipment 2 EN 50293 Performance Criteria B Safety IEC EN 60950 1 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 8 of 45 3 OPERATING PROCEDURE 3 1 Hardware Set Up The PD260 Enhanced Series dual channel parking detector is designed to be shelf or DIN rail mounted with the controls and visual indicators at the front and wiring at the rear of the enclosure The power loop and relay outputs are all connected to the single 11 pin plug which is mounted at the rear of the enclosure 3 2 LCD Menu System O O O Normal Dis play Frequency CH2 CH1 PWR Hmm FREQ RELAY E SIG 1 SENS DIAG NOISE MIN oe SIE Sensitivity W Settings Lu N i kHz T A Presence Relay Settings Diagnostics Reset Settings l Go back 304FP2001_00 304UM0002 Rev 01 PD260 Enhanced Series U
21. bles Possibly the wire insulation has deteriorated and moisture is causing a short to earth or wires of the loop are no longer encapsulated and are moving For more information about Frequency drift refer to the Theory of Application section in the Diagnostic Unit DU100 User Manual Document No 895UM0001 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 12 of 45 3 2 3 Sensitivity The sensitivity level of the detector determines the change of inductance necessary to produce a detect The PD260 provides a large range of sensitivities with fifteen available settings Each SENS Mi L N C channel may have an independent sensitivity level Defined as the percentage change in inductance sensitivity selections range from 0 01 which is the highest sensitivity to 5 0 as the lowest sensitivity Setting 0 01 Highest 0 0 07 VEHICLE TYPE 9GAL L Metal Supermarket Trolley Bicycle 0 04 Four Wheel Drive 0 40 Ton Tip Truck A 2 00 o oa Ss Zeg 5 00 Lowest Forklift 1 00 Automatic Sensitivity Boost For a standard loop of 1 0 metres by 2 0 metres with 2 turns circumference less than 10 m and a ten metre feeder cable the above right table shows typical sensitivity values for different vehicle types For more information about Sensitivity refer to the Theory of Application section in Diagnostic Unit DU100 User Manual Document No 895UM0001 3 2 3 1 Automatic Sensitivity B
22. buried under the road surface The detector has been designed for ease of installation and convenience With the on board diagnostics and automatic frequency selection to assist with installation as well as customisable outputs the product is easily configurable to suit most applications With the introduction of the easy to operate LCD menu system settings can be changed for frequency sensitivity presence modes as well as configurable and interchangeable output combinations The menu also provides access to a host of diagnostic and statistic information Over and above the LCD menu system the PD260 provides additional visual outputs LEDs on the front of the enclosure to provide an indication of the state of the channels as well as the detector itself The channel LEDs indicate whether a vehicle is present over the loop or there is a fault on the loop while the power LED indicates that the unit has been powered and is operational or whether either of the channels has recovered from a fault The unit has relay change over contacts on the 11 pin connector at the rear of the enclosure for providing outputs as selected through the menu system Although it is a dual channel detector the design eliminates the possibility of crosstalk between the loops connected to the detector Related Documents Data Sheet Document No 304DS0002 Installation Leaflet Document No 304LF0002 2 4 Channel Vehicle Detector Installation Guide Document No 87
23. der Yes No loops and the feeder Yes No Please give details 304UMO0002 Rev 01 PD260 Enhanced Series User Manual Page 43 of 45 With the detector disconnected measure the following Channel 1 AC voltage between the two wires of the feeder cable V AC voltage between one of the feeder cable wires and earth V DC resistance of Feeder plus Loop ohms Inductance of Feeder plus Loop uH Frequency of measurement KHz Loop and feeder resistance to earth with detector unplugged using a 500V Megger Mega Ohms should be greater than 10 Mega Ohms Channel 2 AC voltage between the two wires of the feedercable V AC voltage between one of the feeder cable wires and earth V ohms DC resistance of Feeder plus Loop Inductance of Feeder plus Loop uH Frequency of measurement KHz Loop and feeder resistance to earth with detector unplugged using a 500V Megger Mega Ohms should be greater than 10 Mega Ohms 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 44 of 45 READINGS FROM ON BOARD DIAGNOSTICS Channel 1 Frequency kHz Frequency Min kHz Frequency max kHz Sensitivity Min AL L Sensitivity Max AL L Channel Status Undetect Detect Open circuit Short circuit or Indeterminate Channel 2 Frequency Frequency Min kHz kHz Frequency Max kHz Sensitivity Min Sensitivity Max Channel Status AL L AL L
24. e and 2 This device must accept any interference received including interference that may cause undesired operation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help The following booklets prepared by the Federal Communications Commission FCC may also prove helpful How to Identify and Resolve Radio TV Interference Problems Stock No 004 000 000345 4 Interface Handbook Stock No 004 000 004505 7 These booklets may be purchased from the Superintendent of Documents U S Government Printing Office Washington DC 20402 WARNING 11 Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment 3
25. ehicle types as well as different loop and feeder combinations Upon detection of a vehicle passing over the loop the detector operates its output relays which may be used to indicate controls associated with the installation Detector Tuning Tuning of the detector is fully automatic The detector will re tune if any of the following events occur When power is applied to the detector Achannel reset is initiated via the menu system A detect of greater than 16 A L L occurs A fault has occurred and is self healing The detector will automatically tune each channel to its connected loop The detector will tune to any loop with an inductance in the range 20 to 1500 micro henries pH This wide range ensures that all loop sizes and feeder combinations will be accommodated in the tuning range of the detector Once tuned any slow environmental change in loop inductance is fed to a compensating circuit within the detector which keeps the detector correctly tuned For more information about tuning noise and drift refer to section 3 2 2 1 For more information about diagnostics refer to section 3 2 6 Detector Sensitivity Sensitivity of the detection system is dependent on factors such as loop size number of turns in the loop feeder length and the presence of metal reinforcing beneath the loop The nature of the application determines the required sensitivity which may be adjusted by means of the L
26. en 0 Power On Tuning Fault Closed 1 Closed 1 Open 0 Open 0 Power On Idle Closed 1 Open 0 Open O Closed 1 Power On into Detect Open O Closed 1 Closed 1 Open 0 Power On back to idle Closed 1 Open 0 Open O Closed 1 Power On into fault Closed 1 Closed 1 Open 0 Open 0 Power On fault covers to idle Closed 1 Open 0 Open O Closed 1 Power turns Off Closed 1 Closed 1 Open 0 Open 0 Presence Relay fail safe relay Pulse Relay fail secure relay Presence on Fault Selection Relay 1 and 2 Fail secure Fail safe Fail secure Fail safe Power Off Closed 1 Closed 1 Open O Open 0 Power On Tuning Fault Closed 1 Closed 1 Open 0 Open 0 Power On Idle Closed 1 Open 0 Open O Closed 1 Power On into Detect Closed 1 Open 0 Open O Closed 1 Power On back to idle Closed 1 Open 0 Open O Closed 1 Power On into fault Open O Closed 1 Closed 1 Open 0 Power On fault covers to idle Closed 1 Open 0 Open O Closed 1 Power turns Off Closed 1 Closed 1 Open 0 Open 0 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 18 of 45 3 2 5 6 Relay Output State Summary for Pulse Below is the output state summary for a relay set to output on a pulse referring to the normally open relay contacts of the relay in all cases The normally closed relay contacts where applicable will always be the
27. er Status LED and two Green Channel LEDs There are four possible conditions which are indicated by the LEDs e Idle condition no vehicle is detected e Detect condition a vehicle is detected passing over the inductive loop e Tuning condition the detector is currently tuning to the loop e Fault condition the detector is unable to tune to the loop as it is either out of operational conditions such as low signal strength or frequency out of range or there exists a fault on the loop such as a short circuit or an open circuit If a loop fault exists the Green Channel LED will come on and flash at a rate of 2Hz indicating the fault If the fault is self healing the detector will continue to operate but the LED will flash at a slower rate of 1Hz indicating to the user that a fault has occurred The detector must be power cycled or have the statistics cleared in order to clear the historical fault information In order to distinguish between a detect condition and a tuning condition the Channel LED displays the same in tuning as it does in fault Once the channel is tuned the Green Channel LED will go off As indicated above if the unit has recovered from a fault the channel LED will flash at 1Hz otherwise it will remain off In the event of a vehicle being detected passing over the inductive loop the Green Channel LED will light up indicating the presence of a vehicle over that channel and remain on for the duration of the de
28. er snnt 30 5 4 Sensing Loop Geomet innen nsi nnne entes een ns intr n senten enne sinn ns sn nnne rese 31 e SE Ee le REEL TEE 32 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 2 of 45 Gz GONFIGURA TON ES 34 6 1 PD261 Enhanced Series Detector English nennen 34 6 2 PD262 Enhanced Series Detector English 35 6 3 PD264 Enhanced Series Detector English 35 NE duBle erm E 36 8 CUSTOMER FAULT ANALYSIS oi eege EES EE 37 8 1 Fault FINAN ed tete de ete ee eite Enc A end ce de be de uc 37 8 2 Detector On Board Diagnostics 38 8 3 XkF nctional RRE 38 APPENDIX A FCC ADVISORY STATEMENT eeeeeeeeeeeseeeene rr 39 APPENDIX B INSTALLATION OUTDOORS eeeeeeeeeeeseees seen n nenne nnn na sain natn nn sn tn ss satanas n sse tn nns nn as 40 Appendix BI IEC 60950 22 2005 Outdoor Cabinet nennen 40 Appendix B 2 IEC 60950 22 2005 Northern Europe 40 Appendix B 3 IEC 60950 1 2005 Overvoltage Category ssssssssssssseeeeeeeee enne 40 APPENDIX C REQUEST FOR TECHNICAL SUPPORT FORM e eeeeeeeeeneeenen enne nnnm nnn nn nnns 41 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 3 of 45 WARNING WARNING WARNING WARNING WARNING WARNING WARNING pe O This unit must be grounded earthed Disconnect power before working on this unit Installat
29. fail secure to produce the below inverted logic Vehicle ON Loop x ES 1 Vehicle OFF Loop Green LED ON l To ee Green LED gl LI U U 150 ms Pulse Relay Contact JA IO t Relay Contact OPEN E EE lt Pouer Tuning Uehicle Uehicle Switched Complete Enters Leaves ON Loop Loop The above picture illustrates the states of the indicator LEDs and the inverted logic of a presence relay configured for fail secure pulse output For more information on all the possible pulse output relay states refer to section 3 2 5 7 Response Times The response time of the detector is the time taken from when a vehicle moves over the loop to when the detector gives an output The response times of the PD260 have been adjusted to prevent false operation in electrically noisy environments but retain adequate response to vehicles in parking and vehicle access control applications The response time will be proportional to the level of sensitivity the level of the detect and the speed of the vehicle In other words a fast moving large detect will respond quicker than a slow moving small detect Also if the sensitivity is set very low the point at which it crosses the threshold will be later than higher sensitivity settings 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 28 of 45 5 5 1 5 2 INSTALLATION GUIDE Optimum functioning of the detecto
30. harness Nortech Part No 302FT0041 which can only be used in SELV voltage less than 60 Vpc or less than 42 Vac applications Operational Constraints 5 2 1 Environmental Factors to Consider Even though the PD260 Enhanced Series parking detectors are housed the system integrator MUST ensure that the detector is installed in a housing fire enclosure to protect it from the environment The PD260 Enhanced Series parking detectors are rated to operate from 30 C to 70 C but the rate of temperature change MUST not exceed 1 C per minute This system integrator MUST ensure that the housing used complies with this rate of temperature change requirement For installation Outdoors refer to Appendix B For additional information on Environmental Factors refer to the section Environmental Influences to Design Parameters in the Loops and Loop Installations Manual Nortech Document No MKTO5 304UMO0002 Rev 01 PD260 Enhanced Series User Manual Page 29 of 45 5 2 2 Crosstalk When two loop configurations are in close proximity the magnetic fields of one can overlap and disturb the field of another loop This phenomenon known as crosstalk can cause false detects and detector lock up Should the loops be connected to the same dual channel detector crosstalk will not occur due to the fact that sequential polling of the loops takes place resulting in only one loop being energised at a given time Crosstalk between adjacent loops ope
31. ication DIAG NOISE OU DIAG NOISE 0007 DIAG NOISE NNN SIG DIAG The signal sub menu shows the percentage of the maximum signal strength able to be processed by the microprocessor While the signal should reflect 100 across the inductance range it is normal for it to start to drop slightly at very low inductances towards the edge of the range If the feeder cable is too long or the series resistance is too high the signal level will be seen to drop further The detector does not allow a loop to tune if the signal strength is below 35 to provide some signal hysteresis and prevent the risk of the bouncing in and out of fault ud SIG SIG In 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 21 of 45 COUNT The channel count sub menu shows the number of vehicle detects as a function of sensitivity and presence It should be noted to prevent confusion that this is NOT necessarily the same as the number of relay output events depending on your output settings For example AB logic or fault outputs would yield a different total output count from the number of vehicles detected As the count value becomes increasingly larger the display will drop the lowest significant digit in order to display the most significant digit As a result counts in the hundreds of thousands will display to the nearest 10 counts counts in the millions to the nearest 100 c
32. ignal to monitor and will display the relevant fault display to assist with correcting it FREQ Short circuit The loop is displaying short circuit properties These DIAG include but are not limited to very low signal level or very high frequency E T In practical terms this could arise from a short in the loop wire or a J i very long feeder cables resulting in high resistance and very low kHz signal This could also arise from worn cut insulation on the feeder cables and water getting into the conduits It is also possible that the loop has too few turns resulting in a very low inductance FREQ Open circuit The loop is displaying open circuit properties This is DIAG Seen at very low frequencies and in some cases at low borderline signal level From frequency shift setting 5 and upwards an open circuit and short circuit appear very similar Manually select frequency j 1 to confirm an open circuit condition kHz During normal operation most faults will appear as either a short or open circuit After a fault has occurred in attempting to recover from the fault the detector will prevent retuning to a persistent or borderline fault In doing so the diagnostics will attempt to further refine its evaluation of the loop by providing the following diagnostic displays In practical terms this could arise from a loose or corroded connection a cut loop or feeder wire or no physical loop attached It is also po
33. ion and operation by service personnel only No user serviceable parts inside No internal settings Warranty void if cover removed Always suspend traffic through the barrier area during installation and testing that may result in unexpected operation of the barrier USA FCC Advisory Statement Refer to Appendix A at the end of this document Europe Disposing of the product This electronic product is subject to the EU Directive 2002 96 EC for Waste Electrical and Electronic Equipment WEEE As such this product must not be disposed of at a local municipal waste collection point Please refer to local regulations for directions on how to dispose of this product in an A environmental friendly manner 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 4 of 45 1 INTRODUCTION The PD260 Enhanced Series Two Channel Inductive Loop Vehicle Detector is a dual channel microprocessor based detector designed specifically for parking and vehicle access control applications It is suited primarily to complex multilane access control and counting applications Using the most up to date technology the PD260 has been designed in order to meet the requirements of a vast number of parking applications in terms of operating conditions and options available to the user The primary function of the detector is to detect vehicle presence by means of an inductance change caused by the vehicle passing over a wire loop
34. it will remain detected when the power is restored Thus it prevents the tuning out of a vehicle over the loop during a power failure condition The memory retention of the vehicle is designed to be infinite but is subject to the following limitations The level of the detect must be sufficiently greater at least 0 5 than the sensitivity level or else the maximum potential temperature drift from one time of day when the power fails to another when the power returns mustn t exceed 20 C 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 24 of 45 3 3 The level of the detect should be no less than 0 15 in total and also a minimum of 0 15 above the sensitivity level If these conditions are not met it is possible for the detect condition to be lost on recovery of power If the presence of a vehicle should occur very close to when the power is lost there is also a chance that the unit won t retain the detect and the outputs could toggle on restoration of power Excessive power failures or toggling of power to the unit can reduce the lifespan of the power fail capability The unit is designed to handle a reasonable amount of power loss of the device life span If Powerfail is used in conjunction with AFS and there is a concern of a channel going into fault use AFS to select the best band and then turn it off to prevent the unit retuning on recovery Front Panel Indicator The front panel indicators consist of a Red Pow
35. ivity level and may be different on each relay It may also be used on either presence or pulse output However it should be noted that on pulse on AB logic the delay will not act as a filter Rather the output will be guaranteed but at a delayed time period later 304UMO0002 Rev 01 PD260 Enhanced Series User Manual Page 16 of 45 3 2 5 4 Output Polarity RELAY SAFE RELAY OI The relay output polarity may be toggled between fail safe and fail secure via the relay menu In fail safe the output is the same in detect as it is with no power applied to the unit Related to an access control situation this is used in situations where the loss of power must not lock people out Either a valid detect situation or a power failure fault will provide a signal In fail secure the output is the same in undetect as it is with no power applied to the unit Related to an access control situation this is used in situations where the loss of power must not allow people free entry Only a valid detect situation will provide a signal By default the normally open contacts should be open in the event of no vehicle over the loop and closed for a vehicle present over the loop Units supplied with relays set to presence by default are wired as fail safe relays Relays set to pulse by default are wired as fail secure relays If the state of the output when the detector is off is not of concern the polarity function can effective
36. l Refer to the label on the side of the unit for connector PIN assignment NOTE 1 The tables below show the PIN assignments for Nortech s standard PD260 models On other models the pin assignments may change WARNING 9 The wiring harness is only rated for SELV voltages less than 60 V dc or less than 42 V ac If the relays are to switch higher voltages use CE LVD approved 11 pin sockets NOTE 2 All relay contact descriptions refer to the tuned and undetected state 6 1 PD261 Enhanced Series Detector English 11 pin connector wiring for PD261 DETECTOR Order number 304FT2001 302FT0041 11 PIN WIRING HARNESS Connector Function WIRE COLOUR Pin No Red 1 Live 120 V AC 10 Black 2 Neutral 30 mA 60 Hz Blue 3 Channel 1 Loop Twist this Blue 4 Channel 1 Loop Pair Yellow 5 Channel 2 Loop Twist this Yellow 6 Channel 2 Loop Pair Grey 7 Relay 2 N O Contact Grey 8 Relay 2 Common Contact Green Yellow 9 Earth White 10 Relay 1 N O Contact White 11 Relay 1 Common Contact 304UMO0002 Rev 01 PD260 Enhanced Series User Manual Page 34 of 45 6 2 PD262 Enhanced Series Detector English 11 pin connector wiring for PD262 DETECTOR Order number 304FT2002 302FT0041 11 PIN WIRING HARNESS Connector Function WIRE COLOUR Pin No Red 1 Live 230 VAC 10 Black 2 Neutral 20 mA 50 Hz Blue 3 Channel 1 Loop Twist this Blue
37. l Specification Extensive studies have been undertaken over the years by various agencies around the world in order to ascertain the optimum loop installation materials As an insulated conductor is a prerequisite PVC covered cable has been used for many years as a first choice but tests have shown in fact that this is unsuitable for long term installations The PVC tends to become porous with the result that adjacent loops become electrically coupled to one another with resultant crosstalk implications Instability and susceptibility to electrical interference can also result The insulation must withstand wear and abrasion from the shifting streets moisture and attack by solvents and oils as well as withstand the heat of high temperature sealants Silicone insulated cable has emerged as one of the preferred insulation materials Other insulation materials are rubber thermoplastic synthetic polymer and cross linked polyethylene 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 30 of 45 5 4 Stranded loop wire is preferred over solid wire Because of its mechanical characteristics a stranded wire is more likely to survive bending and stretching than a solid A heavy gauge conductor is definitely desirous in order to maintain the loop Q factor The loop and feeder should preferably constitute a single length of insulated multi stranded copper conductor with no joints and with the copper having a minimum cross section 1
38. lay as shown on the left The tune time with AFS on can range C from 5 to 20 seconds If after this period of time the detector still has not tuned refer to the on board diagnostics as it is also possible that J none of the frequency selections are suitable In this case the detector will indicate a fault under the diagnostics displays Due to the sporadic nature of noise the channel may seem quiet during the evaluation but still suffer from cross talk There may be some extreme cases where the shift in frequency is insufficient to handle the amount of cross talk For more information on cross talk refer to the installation guide at section 5 specifically section 5 2 2 For more information about diagnostics refer to section 3 2 6 For more information about tuning refer to section 4 1 AFS can be toggled on or off via the frequency menu When activated both channels will be retuned to find the best operating frequency When deactivated if both channels are tuned they will not retune but remain at the previously selected frequency If AFS is deactivated while the detector is tuning the frequency setting defaults to setting 5 of 8 In this situation it is recommended that the user selects a frequency setting However it is also recommended that while the detector is tuning the user allow the tuning operation to complete before making changes It should be noted that with AFS active both channels are interdependent This means tha
39. losed 1 Open 0 Open 0 Power On Tuning Fault Closed 1 Closed 1 Open 0 Open 0 Power On Idle Closed 1 Open 0 Open 0 Closed 1 Power On into Detect Closed 1 Open 0 Open 0 Closed 1 Power On Pulse on UnDetect Open 0 Closed 1 Closed 1 Open 0 Power On Idle Closed 1 Open 0 Open 0 Closed 1 Power On into fault Closed 1 Open 0 Open 0 Closed 1 Power On fault covers to idle Closed 1 Open 0 Open 0 Closed 1 Power turns Off Closed 1 Closed 1 Open 0 Open 0 aka ODE EE EE fail safe relay Pulse Relay fail secure relay Fail secure Fail safe Fail secure Fail safe Power Off Closed 1 Closed 1 Open 0 Open 0 Power On Tuning Fault Closed 1 Closed 1 Open 0 Open 0 Power On Idle Closed 1 Open 0 Open O Closed 1 Power On Into Detect Closed 1 Open 0 Open 0 Closed 1 Power On back to idle Closed 1 Open 0 Open 0 Closed 1 Power On into fault Open O Closed 1 Closed 1 Open 0 Power On while in fault Closed 1 Open 0 Open O Closed 1 Power On fault covers to idle Closed 1 Open 0 Open O Closed 1 Power turns Off Closed 1 Closed 1 Open 0 Open 0 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 19 of 45 3 2 6 Diagnostics Users familiar with the DU100 from the PD230 range will find similar DIAG features in the on board diagnostics facility The PD260 Enhanced Series detectors are constantly monitoring
40. ly be used to flip the output logic on that relay from active high to active low and vice versa By default on the PD260 both relays are fail safe relays for presence use This affects the polarity of the output The below sections detail each possible output state of the relays In this case both relays follow the left two columns depending on the polarity setting 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 17 of 45 3 2 5 5 Relay Output State Summary for Presence Below is the output state summary for a relay set to output on a presence referring to the normally open relay contacts of the relay in all cases The normally closed relay contacts where applicable will always be the opposite l e closed means that there is contact between the common and N O contacts The polarity option allows you to toggle between fail safe and fail secure in the on state by flipping the outputs However the off state depends on the unit s type of relay The PD260 has two presence relays by default To be noted is that a detect presence setting will output both for a detect and fault in fail safe polarity The difference between presence on detect and presence on fault can be seen in the below tables Presence Relay fail safe relay Pulse Relay fail secure relay Presence on Detect Selection Relay 1 and 2 Fail secure Fail safe Fail secure Fail safe Power Off Closed 1 Closed 1 Open 0 Op
41. ng the cable into the loop slot Once the required number of turns of wire are wound into the slot around the loop circumference the wire is routed again via the feeder slot to the roadway edge A similar length is allowed to reach the detector and these two free ends are twisted together to ensure they remain in close proximity to one another Minimum 20 turns per metre Maximum recommended feeder length is 100 metres It should be noted that the loop sensitivity decreases as the feeder length increases so ideally the feeder cable should be kept as short as possible The loops are sealed using a quick set black epoxy compound or hot bitumen mastic to blend with the roadway surface 300 mm 2 m depending on road width _ 300 mm CURB ROAD EDGE E N Y Min Distance Apart 2 m Road width 2 m 3 m Road width 4 m Max Distance Apart No Limit E 45 CROSSCUT TO PROVIDE STRESS RELIEF t TRAFFIC DIRECTION Figure 5 1 Adjacent loops connected to different detector modules 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 32 of 45 ROAD SURFACE Loop Sealant p 3 Tums of Gg N Loop Cable lt P 30 50 mm e 4mm iy o Figure 5 2 Slot Details Page 33 of 45 304UM0002 Rev 01 PD260 Enhanced Series User Manual 6 CONFIGURATION WARNING 8 The connector PIN assignments vary from model to mode
42. ns where an output is used to determine when a vehicle has safely exited a loop Setting 0 sec 30 sec 1 min 4 min 10 min 20 min 40 min 60 min Presence Off Permanent or Limited 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 14 of 45 3 2 5 Relay The PD260 Enhanced Series provides user definable outputs on each relay and channel The detector setup allows for relay outputs to be generated in the event of a vehicle entering being present on or exiting the loop lt also allows an output for the duration of or in the event of a fault RELAY The relay menu allows for complete customisation of the outputs After selecting which relay to adjust each relay output may be set to any possible combination of channel presence event or pulse event M i e pulse on detect or undetect pulse width duration and output j delay Only once a final presence or pulse setting has been selected will the new setting take effect The current setting is indicated by an arrow on the right of the display After selecting the relay to adjust the option is given to select which channel output to assign the relay output to Whether the relay is activated on presence or a pulse signal is selected the delay time and output polarity settings for the channel can also be adjusted A detect is classified as the entry of a vehicle onto the loop where an undetect is the exit of the vehicle from the loop
43. of traffic flow Some of the features that make the PD260 Enhanced Series detectors ideal for these purposes have been described in the preceding paragraphs For more details on parking applications refer to Parking Applications Manual Document No MKTO0003 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 36 of 45 8 CUSTOMER FAULT ANALYSIS 8 1 Fault Finding FAULT CAUSED BY REMEDY Red LED does not glow on power up After the initial tune period the CH1 and or CH2 Green Channel LED remains flashing at 2Hz After tuning the loop output LED flashes intermittently and the relay chatters If the indicator is off then there is a fault on the power connection to the unit Unit cannot tune to the loop due to faulty loop or feeder connection Loop may be too small or too large Faulty detector unit The loop is getting spurious detects due to a Crosstalk with adjacent detector b Faulty loop or feeder connection Check power feed to the unit Check on board diagnostics to confirm fault Check loop installation and connections Check on board diagnostics to confirm fault Re cut as per installation instructions Replace unit a Change frequency setting b Check that the feeders are correctly connected and adequately twisted 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 37 of 45 8 2 Detector On Board Diagnostics For more info
44. oost ASB Automatic sensitivity boost ASB is a mode which affects the SENS undetect level of the detector and can be toggled on or off via the sensitivity menu Each channel may have an independent ASB H setting q ASB causes the sensitivity level to be boosted to a maximum on ALA detection of a vehicle irrespective of current sensitivity level and maintained at this level during the entire presence of the vehicle over the loop When the vehicle leaves the loop and the detection is lost the sensitivity level reverts to the pre selected level 304UMO0002 Rev 01 PD260 Enhanced Series User Manual Page 13 of 45 3 2 4 Presence PRES PRES PERM PRES Li 8 TIME The presence setting determines how the detector handles detects There are two modes to choose from namely permanent presence and limited presence Permanent presence mode is aimed at maintaining the presence of a vehicle over the loop by continuously compensating for all environmental changes This is used in situations where safety is involved and the detector is required to maintain the detect Limited presence however is aimed at limiting the presence of a vehicle over the loop This is used in situations where statistics or control is involved and a vehicle parked over the loop should not prevent continued operation The presence is limited to approximately one hour for a 196 AL L It is effectively a time out period
45. opposite l e closed means that there is contact between the common and N O contacts The polarity option allows you to toggle between fail safe and fail secure in the on state by flipping the outputs However the off state depends on the unit s type of relay The PD260 has two presence relays by default To be noted is that a pulse output will differ from a presence output in that in fail safe polarity it won t also pulse on a fault unless it is specifically set to be a pulse on fault Pulse On Detect Selection Presence Relay fail safe relay Relay 1 and 2 Pulse Relay fail secure relay Fail secure Fail safe Fail secure Fail safe Power Off Closed 1 Closed 1 Open 0 Open 0 Power On Tuning Fault Closed 1 Closed 1 Open 0 Open 0 Power On Idle Closed 1 Open 0 Open 0 Closed 1 Power On Pulse on Detect Open 0 Closed 1 Closed 1 Open 0 Power On while in Detect Closed 1 Open 0 Open 0 Closed 1 Power On back to idle Closed 1 Open 0 Open O Closed 1 Power On into fault Closed 1 Open 0 Open 0 Closed 1 Power On fault covers to idle Closed 1 Open 0 Open 0 Closed 1 Power turns Off Closed 1 Closed 1 Open 0 Open 0 Pulso D SE BE E fail safe relay Pulse Relay fail secure relay Fail secure Fail safe Fail secure Fail safe Power Off Closed 1 C
46. ored The loop should reach to within 300 mm of each edge of the roadway In general loops having a circumference measurement in excess of 10 metres should be installed using two turns of wire while loops of less than 10 metres in circumference should have three turns Loops having a circumference measurement less than 6 metres should have four turns It is good practice at time of installation to construct adjacent loops with alternate three and four turn windings For additional Information on loop geometry refer to the following documents e INDUCTIVE LOOP VEHICLE DETECTION Nortech Doc No MKT0001 e TRAFFIC DETECTION Nortech Doc No MKT0002 e PARKING APPLICATIONS MANUAL Nortech Doc No MKT0003 e LOOPS and LOOP INSTALLATION Nortech Doc No MKTO5 304UMO0002 Rev 01 PD260 Enhanced Series User Manual Page 31 of 45 5 5 Loop Installation All permanent loop installations should be installed in the roadway by cutting slots with a masonry cutting disc or similar device A 45 crosscut should be made across the loop corners to reduce the chance of damage that can be caused to the loop at right angle corners NOMINAL SLOT WIDTH 4 mm NOMINAL SLOT DEPTH 30 mm TO 50 mm A slot must also be cut from the loop circumference at one corner of the loop leading to the roadway edge to accommodate the feeder A continuous loop and feeder is obtained by leaving a tail long enough to reach the detector before inserti
47. ounts and tens of millions to the nearest 1000 counts Once the count exceeds the maximum displayable value the max indicator will come on and the display will cease incrementing DIAG COUNT A IAG COUNT al mes The PD260 Enhanced Series detectors are able to output on AB logic events As such their count values are also displayed under diagnostics To differentiate between them channel 1 count value sub menu shows the number of detect events on channel 1 and the forward AB logic counts where channel 2 count value sub menu shows the number of detect events on channel 2 and the reverse AB logic counts COUNT c AB lu Count totals are reset from the reset menu or every time the detector is power cycled 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 22 of 45 3 2 6 1 Diagnostic fault display information In the event of a channel fault resulting in the inability of the detector channel to continue detecting all diagnostic displays displaying live data e g frequency will cease displaying live data and instead indicate that there is a fault present and what that fault is Statistical data e g Min and Max values and count totals is not affected by a fault condition and will therefore always be displayed The types of fault displays are short circuit open circuit noisy signal low signal level and drift In most cases the detector channel is not receiving a valid s
48. p configuration e g number of turns will need to be changed Refer to the on board diagnostics for assistance If the frequency reading from the on board diagnostics is close to the Lowest Automatic FREQ F H LJ H IN kHz FREQ FROH kHz FREQ FRL I kHz maximum frequency the inductance of the loop is too low and more turns should be added to the loop However if the reading is close to the minimum frequency the inductance of the loop is too high and some turns should be removed from the loop It should be noted that if a detector channel is operating close to either limit it is possible that either the frequency drift caused by environmental changes or the shift in frequency caused by a large AL L detect could cause the frequency to go outside the limits resulting in a retune 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 11 of 45 3 2 2 1 Automatic Frequency Selection AFS FREQ The PD260 Enhanced Series introduces the new Automatic Frequency Selection AFS which is turned on by default This setting allows the detector to briefly evaluate all eight frequency shifts and L C select the best frequency offset available H Due to the increased processing required by AFS the detector takes longer to tune than when it is deactivated When AFS is activated under the normal or idle display the display will indicate that it is attempting to tune by displaying AFS on the disp
49. play every 25 seconds The diagnostics displays differ in that they will retain their display for 5 minutes to allow for monitoring of certain desired information spaced sufficiently apart approximately 2 metres between adjacent edges and also ensuring that the detectors are set to different frequencies Frequency The frequency settings menu is the first menu and is used to shift the FREQ operating frequency of the detector This is primarily used to handle situations in which more than one detector is used at the same site The detectors must be set up to ensure no crosstalk interference L a L A occurs between adjacent loops connected to different detectors This is achieved by ensuring that the loops of the two detectors are The loops connected to multichannel detectors are not susceptible to crosstalk due to the design of the loop interface For more information about crosstalk refer to section 5 2 2 The frequency setting allows the operating frequency of the loops to be shifted higher or lower depending on the selection However the operating frequency of each detector channel is determined by a combination of Inductance of the loop and feeder cable Detector frequency settings The operating frequency of a detector channel increases as the loop inductance decreases and vice versa The inductance of the loop and feeder cable is determined by Size of the loop Number of turns in the loop Length of feeder cable 304UMO0002
50. r module is largely dependent on factors associated with the inductive sensor loop connected to it These factors include choice of material loop configuration and correct installation practice A successful inductive loop vehicle detection system can be achieved bearing the following constraints in mind and strictly following the installation instructions The detector must be installed in a convenient weatherproof location as close as possible to the loop Product Safety Requirements e i WARNING The unit must be GROUNDED earthed e ii WARNING Disconnect the power before working on the unit e iii WARNING On 120 Vac and 230 Vac models a readily accessible disconnect device must be incorporated into the mains wiring as per EN60950 1 2005 Section 1 7 2 2 e ivy WARNING On all models the power supply to the unit MUST have short circuit protection and over current protection installed at the power supply source As per EN 60950 1 2005 section 1 7 2 3 Typically this will be a 5 Amp Magnetic Circuit Breaker for AC models and a fuse for DC models e v WARNING This product must be installed in an enclosure as the IP rating of the detector is IP 30 e Vi WARNING No user serviceable parts inside No internal settings Warranty void if cover removed e vii WARNING Only use CE approved 11 pin relay bases such as Nortech Part No CTR119090 or equivalent As an alternative to the 11 pin relay base Nortech has an 11 pin wiring
51. rating from different detector modules can be eliminated by 1 Careful choice of operating frequency The closer together the two loops the further apart the frequencies of operation must be 2 Separation between adjacent loops Where possible a minimum spacing of 2 metres between loops should be adhered to 3 Careful screening of feeder cables if they are routed together with other electrical cables The screen must be earthed at the detector end only 4 Running feeder cables in their own slots separated by at least 300 mm For additional information on Crosstalk refer to the section Crosstalk Prevention in the DU100 Diagnostic Unit User Manual Nortech Document No 895UM0001 For information about resolving Crosstalk refer to the Theory of Application section in Diagnostic Unit DU100 User Manual Document No 895UM0001 5 2 3 Reinforcing The existence of reinforced steel below the road surface has the effect of reducing the inductance and therefore the sensitivity of the loop detection system Hence where reinforcing exists 2 turns should be added to the normal loop as referred to in section 5 4 The ideal minimum spacing between the loop and the cable and steel reinforcing is 150mm although this is not always practically possible The slot depth should be kept as shallow as possible taking care that no part of the loop or the feeder remains exposed after the sealing compound has been applied 5 3 Loop and Feeder Materia
52. rmation on the on board diagnostics refer to section 3 2 6 8 3 Functional Test To test a detector connect it to an inductive loop with a total inductance in order of 300 microhenries This may be achieved in the workshop by winding x turns of wire on a non metallic former of diameter y X 2 19 turns 0 25mm wire Y 238mm 9 4 inches Bring a small metal object approximately the size of a matchbox close to the loop coil The following will happen on detection The OUTPUT LED will light up Output relays set to PRESENCE on that channel will operate Output relays set to PULSE will operate momentarily approximately 150ms duration To check the sensitivity presence time etc use should be made a calibrated tester which compromises of a calibrated loop similar to the one described above with a moveable vane which can be moved over the loop at pre determined heights This device together with the on board diagnostics will allow comprehensive analysis of the operating characteristics of the detector 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 38 of 45 APPENDIX A FCC ADVISORY STATEMENT NOTE This equipment has been tested and found to comply with the limits of Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation Operation is subject to the following two conditions 1 This device may not cause harmful interferenc
53. ser Manual Page 9 of 45 3 2 1 3 2 2 The menu system does NOT interfere with the operation of the unit it merely provides the ability to change settings and to view diagnostics The unit is fully operational while menu settings are changed and most settings have an immediate effect In cases where a vehicle is present on a loop the change will only take effect on the next vehicle detect In all the menus the settings available to the user are presented and the current setting is indicated by an arrow on the right hand side of the display as shown by the example on the left SENS u i Being a multichannel detector settings where each channel can have e a different setting will prompt the user to select which channel the ALL setting is to affect or be affected by Idle Display The idle display is the normal display shown when not in the menu system It displays the model of the unit To prevent accidental entering of the menu structure a keypad lock is in place As a result in order to enter the menu structure the user must press and WW hold the top button up 7 then simultaneously press the bottom button enter The up 1 and down arrows are used to navigate the system while the enter button is used to select items e g changing settings going deeper into the menu or going back Under normal operating conditions during the use of the menu system the menu will go back one dis
54. ssible that the loop has too many turns resulting in a very high inductance en DIAG Signal In trying to retune the loop signal level was found to be too low to measure reliably This could be due to but is not limited to C T 3 very low inductance or high feeder cable resistance kHz FREQ DIAG Noise In trying to retune the detector found large movements determined to be noise This could be due to but is not limited to T C crosstalk from other loops or vehicles driving over the loop during L J q tuning kHz FRE T Q Drift In trying to retune the detector found unidirectional DIAG movements either up or down in frequency which exceed the Li T L T sensitivity This could be due to start up conditions but is also noted at higher sensitivity levels at the extreme high and low inductances JL which will result in the detector taking longer to tune kHz 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 23 of 45 3 2 7 Reset RESET The reset menu is used for resetting detector values or functionality It also provides access to the way the detector responds to a recovery from a loss of power in the powerfail setting The following sub menu options are available For the first two of the following sub menus the individual channel may be selected and reset It is also possible to reset both simultaneously STATS RETUN Hoi 3 2 7 1 Power fail PF
55. t if one channel goes into fault the other channel will be retuned along with it AFS will then wait for the faulty channel to recover before selecting the best frequency for both If the fault does not recover and immediate use of the working channel is required deactivating AFS will restore independence to the working channel and allow it to tune On both manual and automatic frequency selection once a valid frequency offset has been selected the detector waits for that setting to settle below the sensitivity setting before allowing normal operation to continue If there is sufficient drift from an extreme temperature change in the installation location or vehicles driving over the loop at the time it is possible that the tuning will time out invalidate that frequency selection and attempt to tune again The diagnostic displays will indicate drift in this situation If the situation is very close to the limit it is possible that it might tune as the drift or noise goes back over the threshold and the unit goes into detect just as it tunes In a noisy environment this can be prevented by retuning and if the situation persists to decrease the channel sensitivity or increase the relay output delay The PD260 Detector can handle environmental conditions that cause the frequency to drift up at a rate of approximately 1 AL L per minute Above this false detects can occur If the drift is high it could be a possible fault with the loops or feeder ca
56. tails Your Name Your company Telephone No Mobile Cellphone No FAX No Postal address Product Model i e PD264 Product FT No 304FT Product Serial Number Site Name Detector No at the site What are the internal settings of the unit as accessed by the LCD Menu Frequency Setting AFS Setting Sensitivity Setting Channel 1 ASB Setting Channel 1 Presence Limited or Permanent Channel 1 Sensitivity Setting Channel 2 ASB Setting Channel 2 Presence Limited or Permanent Channel 2 Relay 1 Setting Presence or Pulse and which detect or undetect Relay 1 Delay filter setting Relay 1 Polarity setting 304UM0002 Rev 01 PD260 Enhanced Series User Manual Page 41 of 45 Relay 2 Setting Presence or Pulse and which detect or undetect Relay 2 Delay filter setting Relay 2 Polarity setting If a third relay is fitted Relay 3 Setting Presence or Pulse and which detect or undetect Relay 3 Delay filter setting Relay 3 Polarity setting What application is this unit used in short description POWER SUPPLY DETAILS Nominal Voltage V Minimum Voltage V Maximum Voltage V AC or DC If AC then the Frequency Hz LOOP DETAILS Channel 1 Channel 2 Size of loop m by m Size of loop m by m Shape of loop Number of Turns Size of wire used mm or AWG Type of wire insulation Thickness of insulation
57. tected vehicle It should be noted however that the Channel LED does NOT necessarily represent the output state of the relays It only represents the detection of a vehicle over the loop The relay state could for example be different from the LED state in the case of a pulse output after its pulse duration a fault output or even an AB logic event output The only time the Channel LED will go off while a vehicle is still present is if a presence time is set and has expired or if the channel is in limited presence mode and has expired The Red Power LED indicates that the unit is powered and functional In the event of a fault recovery the Red Power LED will flash at the rate of 1Hz out of sync with the channel LEDs to indicate that one of the channels has recovered from a fault This is to provide visibility if both channels are in detect at the time of viewing 304UMO0002 Rev 01 PD260 Enhanced Series User Manual Page 25 of 45 4 4 1 4 2 PRINCIPAL OF OPERATION The inductive loop vehicle detector senses the presence of a vehicle over an area defined by a loop of two or more turns of wire laid under the road or pavement surface This loop of wire is connected to the detector by a twisted pair of wires called a loop feeder A vehicle passing over a sensing loop causes a small reduction in the inductance of the loop which is sensed by the detector The sensitivity of the detector is adjustable to accommodate a wide range of v
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