MTS4E User Manual
Contents
1. PEEK MTS4E User Manual 99 5016 1C 8 Detection Level and the accuracy in measuring Vehicle transitions If Road Loop inductance is less than that of the Loop Feeder the amount of dilution in the detect signal strength given by the vehicle transition over the road loop is decreased to give marginal detection levels or no detection at all Please note that vehicle transition induces a change of inductance in the road loop only and not in that of the feeder cable For practical installation typical inductive loop detectors with sensitivity boost and medium sensitivity threshold setting the tolerated dilution in the detect signal strength is 50 Conventional installations with 3 turn road loop and a maximum feeder length of 200 metres have always given reliable accuracy in traffic measurements If feeder length had to be increased due to the site location compensation to minimise dilution of detection signals can be implemented adopting the following method a Detector Sensitivity threshold is increased to an acceptable level such that accuracy of traffic measurement is not degraded b If the amount of dilution due to extra long feeders was high the number of loop turns can be increased to match or exceed the inductance of the feeder c A combined corrective action using a amp b can be implemented 8 1 The Ratio of the Loop Inductance to the Total Inductive Circuit of Loop amp Feeder L p Road2. Road Road Loop Inductance of 200 Inductance to seen by the Setting using Loop 1 8 x 2 metre metre Feeder Total Detector with the 200m feeder N Turns uH Loop Tail uH Inductance R 200 metre Feeder 3 88 95 147 0 377 0 075 5 4 154 38 147 0 512 0 102 5or4 5 240 16 147 0 620 0 124 4or 5 6 342 87 147 0 699 0 14 4or 5 For 250 metre Feeder amp Loop AL of 0 296 Inductance of Ratio of Loop AL of 0 2 as Sensitivity Level Road Road Loop Inductance of 250 Inductance to seen by the Setting using Loop 1 8 x 2 metre metre Feeder Total Detector with the 250m feeder N Turns uH Loop Tail uH Inductance R 250 metre Feeder 3 88 95 182 0 328 0 065 5 4 154 38 182 0 459 0 092 5 5 240 16 182 0 569 0 114 5or4 6 342 87 182 0 653 0 13 4or 5 For 300 metre Feeder amp Loop AL of 0 296 Inductance of Ratio of Loop AL of 0 2 as Sensitivity Level Road Road Loop Inductance of 300 Inductance to seen by the Setting using Loop 1 8 x 2 metre metre Feeder Total Detector with the 300m feeder N Turns uH Loop Tail uH Inductance R 300 metre Feeder 3 88 95 217 0 291 0 06 5 4 154 38 217 0 415 0 083 5 5 240 16 217 0 525 0 11 5or4 6 342 87 217 0 612 0 122 5or4 Therefore the above table shows that the Road loops with up to 300 metre feeder should work satisfactorily with the detector set to Sensitivity level 5 For High Bedded vehicles actual detect signal strength can vary along the length of the body between
3. PEEK MTS4E Inductive Loop Detector MTS4E User Manual Summary This User Manual describes the input amp output functions and switch setting of the MTS4E Also a general guide is provided to site installation and testing in compliance with the Highways Agency s TR2512A and MCH1540 specifications documents Peek Traffic Limited DOCUMENT INFORMATION Number 99 5016 Issue 1C Status Approved Date 19 02 2007 Page 1 of 26 Originator s Sam llyat Approver s Andrew Hodge lan Smith Distribution User Hazelwood House Lime Tree Way Chineham Business Park Basingstoke Hampshire RG24 8WZ UK Telephone 44 0 1256 891800 facsimile 44 0 1256 891870 e mail support peek traffic co uk www peek traffic co uk il PEEK MTS4E User Manual 99 5016 1C CHANGE RECORD Issue Date Change Description ECR No 1A 13 11 2006 Initial based on 99 231 2 MTS4E Handbook CN5240 1B 01 02 2007 Text update to all sections Original design specifications CN5240 are not modified 1C 19 02 2007 Final update for this change note CN5240 AUTHORISATION This document is originated and approved by Originator Date Sam llyat Senior Design amp Development Engineer Approver Date Andrew Hodge Approver Date lan Smith 2006 2007 Peek Traffic Limited Page 2 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C
4. fo f2 mode 38 to 1400 uH nominal f fo mode 26 to 1100 uH nominal fo fo mode 18 to 500 uH nominal Twisted Pair Loop Feeder can extend upto 300 metres using multistrand insulated cable with cross sectional area of 1 5 or 2 5 sq mm Loop Frequency range 20 to 117 kHz Loop Amplitude Range 3 to 14 V pk to pk If frequency range to one or more channels is altered the detector should be RESET or reset the altered channel by switching its Sensitivity OFF 000 and the ON to avoid long detection or lock up 2006 2007 Peek Traffic Limited Page 14 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C 4 3 Channel Presence Switches Front Panel Switch Bit 1 Bit 0 Pr LO HI Presence range Second PCB First PCB idi ES Bit 2 switch bit switch bit E Switch is set to PLo ON 0 ON 0 3 5 sec Switch is ON 0 Switch is set to PLo ON 0 OFF 1 4 min Switch is ON 0 Switch is set to PLo OFF 1 ON 0 8 min Switch is ON 0 Switch is set to PLo OFF 1 OFF 1 16min Switch is ON 0 Switch is set to PHi ON 0 ON 0 35 min Switch is OFF 1 Switch is set to PHi ON 0 OFF 1 60 min Switch is OFF 1 Switch is set to PHi OFF 1 ON 0 120 min Switch is OFF 1 Switch is set to PHi OFF 1 OFF 1 Permanent Switch is OFF 1 2006 2007
5. CONTENTS CHANGE RECORD civandsccdseek aa aa era Ea a aa aa r sannnancdunpasiennnanenacaapnnsy sdsnnbaachaponn Pa aE RAAE ENERE AEA 2 AUTHORISATION eisseu tresnia 2 ei E ME 3 1 OVERVIEW OF THE MTS4E DETECTOR MODULE c eceeeeeeseeeeeeeeeeeeeeeeeeeeeneeseeeeneeeeees 5 SEMILLA 5 1 2 MTSAE Approvalse enne nennen nemrnn enne sn nenne nnns sn sn sn nennt nnns ene 5 2 INPUT AND OUTPUT INTERFAJQGE reor treten enn nnn irme han nen n oo un Er Ee Ih kn enn uuum SEN darhan anaana 6 2 1 Input amp Output CONNEC OT siesena aaia ai a aiaia 6 22 DC or AG Input lee 6 22 1 IGHSUP PLY EE 6 2 2 2 Isolated 11 to 26 vac Supply csiis anaana aiia aiaa aa aaa iia 6 23 LOOP e TTT 6 2 4 External Detector Address IDENT esssseesssesserreessnnesesnneensnnaanennaatannaatnnnaatannaanennaanannaaeennae 7 20 External Reset ee ter ur i gedd EE 7 2 6 Channel Output and Status Device sss 8 2 6 1 Detect Output and Type Selection sess 8 2 Channel Status Fault Output seis e ager haee ranae n nnn sana en L 9 2 7 1 Fault Type and Fault Output Mechanisme 9 2 7 2 Status Output Device per channel ssssssssssssseeeeeem 10 2 8 No Detect or Fault OUTPUT Device ssssssssssseeneeeneme eene 10 3 FRONT PANEL CONTROLS AND LEDS sees 11 3 4 Front Panel SWITCHES
6. 2 metres in the direction of travel This dimension may be varied if trying to match an existing loop Standard gap between the two loops is 2 metres i e 4 metres leading edge to leading edge This dimension may be varied if trying to match an existing loop Loop width variable depending on the lane width leaving a minimum gap of 0 75 metre w r t each edge of the lane It is important that the loops are positioned centrally within each lane This dimension may be varied if trying to match an existing loop On some roads the edges of the carriageway are marked with a solid white line which may be some distance in from the physical edge of the road surface Providing that the traffic in a lane is seen to drive centrally between this solid white line and the lane dividing markings and then the loop position should be measured from the solid white line rather than from the physical road edge On roads where there are no markings at the edge of the carriageway the positioning of traffic driving within each lane should be observed A practical judgement must be made to determine the best loop position from the edge of the carriageway such that normal traffic flow will pass over the centre of the loop To achieve comparable measurements it is preferable that all loop pairs on a multi lane carriageway are positioned on the same axis right across the lanes 2006 2007 Peek Traffic Limited Page 20 of 26 19 02 2007 PE
7. Loop Inductance 0 2 x Px Nx NxL D A uH Where N number of turns P perimeter of loop in metres D distance between longest sides of loop in metres A 3 0 mm i e 0 0030 m A 3 5 mm i e 0 0035 m A 3 6 mm i e 0 0036 m A 3 8 mm i e 0 0038 m for standard 3 turn rectangular loop for standard 4 turn rectangular loop for standard 5 turn rectangular loop for standard 6 turn rectangular loop YS YS wa wa L a Naperian or normal log Feeder Inductance factor is between 0 64 amp 0 79 UH per metre for twisted pair cable Inductance factor for feeder cable with cross sectional area of 2 5 sq mm is estimated to be around 0 66 uH m L Inductance of twisted loop tail twisted feeder cable L Total Loop Inductance L L The average Feeder Inductance factor is 0 7 uH metre For a 10 metre loop tail inductance is 7 uH 2006 2007 Peek Traffic Limited Page 23 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C If AL actual inductance change in L p due to vehicle on loop 0 3 or 0 2 Therefore inductance change as seen by the detector AL L p Lf x 100 Results are as follows For 200 metre Feeder amp Loop AL of 0 396 Inductance of Ratio of Loop AL of 0 3 as Sensitivity Road Road Loop Inductance of 200 Inductance to Total seen by the Level Setting Loop 1 8 x 2 metre metre Feeder Inductance R Detec
8. Peek Traffic Limited Page 15 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C 4 4 Switch for Output In Presence or Pulse Mode e One bit per channel selects pulse or presence mode e PRESENCE mode is the default i e Switch is OFF e PULSE mode is selected when switch is ON e Standard Output Pulse Width 125ms 20ms e Pulse width duration of 250 can be programmed using the software override facility 4 5 EOS Switch EVENT ON Status Switch controls the Detect Output and LED e EOS is set to ON Detect Output and Detect LED will switch ON during detector initialisation after start up and during active loop fault condition after the 3 second delay e EOS is set to OFF Detect Output and Detect LED will switch OFF during detector initialisation after start up and during loop fault condition after the 3 second delay 2006 2007 Peek Traffic Limited Page 16 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C 4 6 Response Time with Filter In Filter Out Switch Intersection Motorway applications This switch extends Operate Release Delays for Detection sequence in applications where electrical noise is abnormal Generally Freeway with low electrical noise demands shorter delays to detect fast moving vehicles and in particular motorcycles Therefore recommended default time delay values are as follows Operate Release Delay
9. fault is eliminated LED will return to quiescent condition as soon as the current fault bit in the register is cleared This will normally be after the 3 second delay count down is cleared 3 3 Front Panel LEDs ON OFF Input Input Terminal 31a is provided to switch the LEDs OFF for minimising input supply current If terminal pin 31a is Open Circuit then LEDs are ON If terminal pin 31a is connected to O volt then LEDs are OFF Note See section 5 for EOS switch control on LED s during Start up Reset 2006 2007 Peek Traffic Limited Page 12 of 26 19 02 2007 _ a F MTS4E User Manual 99 5016 1C 4 On Board Switches or Links 2006 2007 Peek Traffic Limited Page 13 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C 4 1 4 2 Switch Link Designation Loop Oscillator Frequency Range 2 Bit Switch per Channel Presence Switch or Link Bit 1 and 2 per Channel Output in Pulse mode Switch Bit per Channel EOS Event on Status Switch or Link Bit Filter In Intersection or Filter Out Freeway Switch Bit 4 1 1 Normally Fitted Switches Presence Frequency Range amp Presence Pulse EOS and Filter In Out 6 bit switch Channel Frequency Range Switch 4 2 1 2 bit switch setting fife fof2 fifo or fofo range Tuning Range with a Q factor gt 4 amp lt 12 is as follows f f2 mode 46 to 2000 uH nominal
10. for 2 Channel version Channel x Sensitivity Scan Mode 0 01 to 0 039 Long SCAN 0 04 to 0 16 Short SCAN Other With Filter Out With Filter In Channels can Motorway Intersection be set to 96 Sensitivit i e switch ON i e switch OFF 0 01 to 0 039 35 ms lt 2ms 35ms lt 2ms 0 04 amp above 20 ms t 1 1 ms 35 ms x 1 5 ms 0 16 amp above Short SCAN 0 04 amp above 5ms lt 1ms 20 ms lt 1 5 ms Operate Release Delay for 4 Channel version Channel x Sensitivity 96 Scan Mode 0 01 to 0 039 Long SCAN 0 04t0 0 16 Short SCAN Other Channels can be set to Sensitivity 96 With Filter In Intersection With Filter Out Motorway 0 01 to 0 039 35 ms x t 3ms 35ms lt 3ms 0 04 amp above 20 ms xt 1 5ms 20ms lt 2ms 0 16 amp above Short SCAN 0 04 amp above 5ms lt 1ms 20 ms lt 2ms The MTS4E Detectors Short SCAN Mode is automatically Enabled only when all Channels are at Sensitivity level gt 0 04 otherwise channels will operate in Long Scan mode 2006 2007 Peek Traffic Limited 19 02 2007 Page 17 of 26 PEEK MTS4E User Manual 99 5016 1C 5 Standard Hardware Build Versions Standard versions 82 5113 01 Part number is 82 5125 Detect changeover relay per channel Fault m
11. 08 3 1 2 0 0 16 2 0 2 0 0 32 1 1 0 0 0 64 0 0 0 0 Channel OFF Channel Presence Range Switch For every channel this switch bit selects PRH presence high or PRL presence low range There are 4 values in each range Low range 3 5 sec 4 8 or 16 minutes High range 35 60 120 minutes or Permanent Any selection in the low high range will be set via the presence PCB switches for each channel See Presence Table in section 4 3 2006 2007 Peek Traffic Limited Page 11 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C 3 2 Front Panel LEDs 3 2 1 Channel Detect LED High brightness in excess of 12 mcd 3mm clear lens Red LED wide viewing angle of 50 degrees when lights LED is ON for detect and OFF in quiescent conditions 3 2 2 Channel STATUS Fault LED High brightness in excess of 12 mcd 3mm clear lens Red LED wide viewing angle of 50 degrees clear lens Red when lights 3 2 2 1 3 2 2 2 Fault Status LED Operation LED indication can be configured in the EEProm to operate in one of the following patterns LED is ON in quiescent OFF when in fault standard OR LED is OFF in quiescent ON when in fault optional Status LED Flashing Operation LED will flash at 1 Hz during the fault delay timer of 3 seconds If the loop fault persisted beyond the 3 seconds LED will be set continuously on or off as selected in the configuration When
12. 1 6 and 0 08 If Sensitivity threshold is set to level 5 20 0496 and its boost threshold is 0 0296 at the fast scan rate to maintain accuracy vehicles will be detected at all times The MTS4E Loop circuit tuning range is between 25 amp 2000 uH It is therefore recommended to use 5 or 6 Turns Road Loop with Feeder lengths in excess of 300 metre long It must be noted that the Ratio of the Road Loop to the Total Inductance must be in excess of 0 291 being 88 95 217 88 95 0 291 2006 2007 Peek Traffic Limited Page 25 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C 9 Reference Highways Agency documents TR2512A MCH1540 MCH1589 MCH1532D and TR2031 MTS4E Handbook 99 231 issue 2 2006 2007 Peek Traffic Limited Page 26 of 26 19 02 2007
13. 596 limit will automatically retune the detector channel to the new inductance and a new quiescent condition is set Fault Classification Data will be outputted in the transparent mode serial protocol via front or rear comms port Fault Output Mechanism Non Latched Fault Fault Output will go OFF Fail Safe mode action LED indication according to setup configuration goes OFF or ON Default setup as in TR2512A the LED will be OFF during loop fault condition When Loop fault occurs an On Delay Timer of 3 seconds will be activated during which the Fault Output remains ON and LED flashes at 1 Hz If fault persisted beyond the 3 sec the Output goes OFF and LED say goes OFF for the duration When Loop is in working order the loop is re tuned automatically Fault Release Delay Timer of 3 seconds will count down to Zero At that time Fault Output goes back to ON and LED goes back to say ON to indicate healthy status Latched Fault TR2512A Fault Output will go OFF Fail Safe mode action LED indication according to setup configuration goes OFF or ON Default setup as in TR2512A the LED will be OFF during loop fault condition When Loop fault occurs an On Latch Delay Timer of 70 seconds will be activated If the loop fault is cleared before the 70 seconds count is completed the Loop is re tuned automatically If the fault persisted beyond the 70 seconds the Output remains OFF and LED say remains OFF i e Fault
14. EK MTS4E User Manual 99 5016 1C 7 The following drawing shows a typical loop configuration for a 2 lane site w Example 1 Loop size is 2 x 2 metres in the direction of travel Loop width is 1 8 metre The gap between the two loops is 2 metres Lane width is approximately 3 6 metres Loop clearance is 0 9 metre from the lane borders Example 2 If Lane width is 3 0 m loop width can be 1 8 and clearance is 0 6 m Generally loop width should not be less than 5196 of the lane width If there is any doubt regarding the loop size or its location it is advisable to consult Peek s Project Engineer immediately for clarification before commencing any installation Advice should also be obtained in the following circumstances e The width of the lane is much less than 3 6 metres e There is no clear indication of lane boundaries i e no white lines e There is a possibility that 2 or more vehicles could occupy a loop at the same time during normal traffic conditions e There is a hard shoulder Loop drawings attached to the MCH1540 document show typical layout e hereare slip roads e Other unconventional Lane Lanes Layout 2006 2007 Peek Traffic Limited Page 21 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C 7 2 Loop Testing The tests defined in the section should be performed on every loop at the site Each loop should be tested immediately after it has
15. KHz nominal This will be dependant on mode selection and total inductance of loop feeder cable 2006 2007 Peek Traffic Limited Page 6 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C 2 4 2 5 External Detector Address IDENT European detector card 5 Bit IDENT giving 0 to 31 addresses Module s address in Binary format representation is set on the Backplane in single or multi detector system e Logical 0 is defined when the bit is connected to OV rail e Logical 1 is defined when the bit is not connected to any voltage rail External Reset This input provides a master detector reset when the terminal is pulsed to logical OV for a minimum period of 30 milliseconds Each channel shall auto retune upon power up or Reset It can also auto retune as soon as Loop fault is cleared unless this action is inhibited according to the specified module configuration 2006 2007 Peek Traffic Limited Page 7 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C 2 6 Channel Output and Status Device 2 6 1 Detect Output and Type Selection 2 6 1 1 2 6 1 2 FAIL SAFE Opto Isolated Output Output device conducts in DETECT condition Upon failure of the input supply the output device is enabled via the load supply and continues to conduct accordingly If EOS is ON Output will conduct during start up and Fault condition otherwise it rem
16. ains OFF Device Type and Rating 8 Each channel output shall be optically isolated to 22000 vac Each channel shall have a Vcg ON voltage lt 1 5 volts at 50mA Veg and an open collector output that can be pulled to gt 40 volts DC b This output may conduct a maximum of 400 pA in the OFF State at a collector emitter voltage of 40 VDC OR FAIL SAFE Relay Output Relay is energised in the quiescent condition i e Loop and detector are operating correctly but not in detect Relay contacts close in the detect condition When Input Supply is OFF relay is de energised and its contacts will be closed If EOS is ON Output will conduct during start up and Fault condition otherwise it remains OFF Device Type and Rating Maximum current is 0 3A at 50 volts 2006 2007 Peek Traffic Limited Page 8 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C 2 7 Channel Status Fault Output 2 7 1 Fault Type and Fault Output Mechanism Fault Type Open Circuit Loop Fault O C Fault is established when the Loop connections are open circuited or the loop inductance goes below the tuning range Short Circuit Loop Fault S C Fault is established when the Loop connections are short circuited or the loop inductance goes above the tuning range Loop Fault in Excess of 25 Change in Inductance A change in loop inductance e g fast loop drift or a large change exceeding 2
17. aster fault changeover relay all channels 82 5113 02 Part number is 82 5129 Detect Opto isolated transistor normally open per channel Fault Opto isolated transistor normally closed per channel 82 5113 03 Part number is 82 5132 Detect Opto isolated transistor normally open per channel Fault master fault changeover relay all channels 82 5113 04 Part number is 82 5137 No Detect or Fault Outputs are fitted The Serial Port transmits detect amp fault data and transition times 5 1 Directional Long Vehicle Logic The hardware build used is the 82 5113 01 The Part number for the configured directional logic module is 82 5143 Operation is based on loop 1 amp 2 being the directional loops in the lane Detect on Loop 1 then on Loop 2 gives an output on Channel 2 Detect on Loop 2 then on Loop 1 gives an output on Channel 1 Similarly for loops 3 amp 4 Detect on Loop 3 then on Loop 4 gives an output on Channel 4 Detect on Loop 4 then on Loop 3 gives an output on Channel 3 Example Detect is outputted when Vehicle enters loop 1 and then loop 2 i e occupying both loops Detect will remain active after loop 1 is cleared and will finally switch off when vehicle clears loop 2 2006 2007 Peek Traffic Limited Page 18 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C 6 Connecto
18. been installed before backfilling the slot so that any problems may be rectified straight away All measurements should be made with no vehicles traversing the loop and with no other loop energised in any way Record loop measurements in the site log book as follows a Impedance to Ground Using the Megger on the 500v DC test range check the impedance of the loop to ground by applying the test for at least 1 minute This would normally be expected to be well in excess of 100Mohms Any reading lower than this indicates a problem b Series resistance Using the Multimeter check that the series DC resistance of the loop is not greater than 13 ohms This should normally be less than 1ohm for a loop directly adjacent to the cabinet Total series resistance including feeder MUST not exceed 5 ohms c Inductance Using the Multimeter check the inductance of the loop This should normally be in the range of 80 110 micro Henries for a loop directly adjacent to the cabinet The loop tail will add approximately 0 59 micro Henries per metre The feeder cable will add approximately 0 7 micro Henries per metre Loops in a pair in the same lane should have virtually identical inductance values Any loop which does not pass all of the above tests should have the loop joint or feeder replaced as necessary Each loop must be tested again once backfilling of the slots is complete 2006 2007 Peek Traffic Limited Page 22 of 26 19 02 2007
19. eere rade hee re ee ede Idea xe nada d d eta Rad da ele 11 3 1 1 Master RESET SWItCh teet nt da hn nde Cen ind Lega ae ur nnd ieu Ri 11 3 1 2 Channel Sensitivity Level Switch Dis 11 3 1 3 Channel Presence Range Switch ssssssssseeeeenn nennen 11 3 2 Front Panel LEDS sssssssssssesssseseeeee eene nnne nent n nnne Inns EEEE EEEn ern n einen 12 3 2 1 Channel Detect LED sssssssssssssssseeneeenenenenem eene ett nene 12 3 2 2 Channel STATUS Fault LED nennen nnne 12 3 3 Front Panel LEDs ON OFF Input 12 4 ON BOARD SWITCHES OR LINKS RRE EENEG 13 41 Switch Link Designation 2 aces adr pic teri da rii SAAE SESS 14 4 1 1 Normally Fitted Switches eese einen tane Ea 14 4 2 Channel Frequency Range Switch essssssssssssseeeeneeeene nennen 14 4 2 1 2 bit switch setting fifo fof2 ffo or fofo range cceceecececeeeeeeeeceeeeeeeteseeseeeeeeeess 14 4 3 Channel Presence Switches sess enne 15 4 4 Switch for Output In Presence or Pulse Mode 16 45 EOS e HE 16 4 6 Response Time with Filter In Filter Out Switch Intersection Motorway applications 17 2006 2007 Peek Traffic Limited Page 3 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C STANDARD HARDWARE BUILD VERSIONS REENEN EEN 18 5 1 Directional Long Vehicle Logic 0 0 2 eceecescneeeeeneceeeeeneneeeeeneneeeeenaneeeeenaneeeeenaneeseenen
20. eneeens 18 CONNECTOR INTERFAQGE 5 naiiitekt oer ern nar nno EE ea Ev ER auo RR o IE OPE x ERRARE AXE eR EO EXE EARN ERR CER SN ERR AEN 19 LOOP INSTALLATION GUIDE dzee steuekee Seeerei SR eege EEN ER dee ENNEN ENER EEN 20 Zi Road Loop Pair in one lanei eee enaeeeceeeeeseceanaeceeeeeensencaaeeeeeeeeneeees 20 Ta Loop TESNI EE 22 DETECTION LEVEL AND THE ACCURACY IN MEASURING VEHICLE TRANSITIONS 23 8 1 The Ratio of the Loop Inductance to the Total Inductive Circuit of Loop amp Feeder 23 ISEFERENGE iiss sessts ccctceeaaenanesaaceassvununeuanaacdsstvansnandnaacessneantnanetuacsscabaaghandeaaceasnsdaanasesacsdaensaanmeneeas 26 2006 2007 Peek Traffic Limited Page 4 of 26 19 02 2007 m PEEK MTS4E User Manual 99 5016 1C 1 Overview of the MTS4E Detector Module 1 1 1 2 Main Features The MTS4E vehicle detector is an enhanced version of the earlier MTS series of vehicle detector products such as the MTS38Z The MTS4E scanning detector hardware provides 4 independent loop channels Each channel incorporates a loop transformer to isolate the inductive road loop from the internal circuit to maintain independent operation Front Panel Sensitivity and Presence range switches are provided The channel Presence time Frequency mode and Pulse mode switches are fitted on the PCB Detect and fault outputs operate in fail safe mode The detector tuning cycle per channel or all channe
21. is latched Reset or Power up will remove latched conditions 2006 2007 Peek Traffic Limited Page 9 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C 2 7 2 Status Output Device per channel Individual Opto Isolated Fault Output Fail Safe Opto isolated Non isolated NPN Collector Emitter transistor ON in no fault condition ON state Vcg 1 5 VDC max at 50 mA OFF state Vcg 50 VDC at lt lt 5uA OR Master Fault Change over Relay Fail Safe Fault Output Relay for all channels Relay is normally energised in no fault condition Contacts rated to 50 vac and maximum current of 0 3 Amps Relay drive is connected to Channel 1 fault output 2 8 No Detect or Fault OUTPUT Device Serial Port is used in conjunction with Peek s data acquisition systems 2006 2007 Peek Traffic Limited Page 10 of 26 19 02 2007 PEEK MTS4E User Manual EE 99 5016 1C 3 Front Panel Controls and LEDs 3 1 Front Panel SWITCHES 3 1 1 3 1 2 Master RESET switch Press and Release action Detector re tunes within 2 seconds ready for immediate action Detect and Fault output devices shall operate according to the EOS setting as indicated in section 1 and later in section 6 Channel Sensitivity Level Switch Bits Switch Sensitivity Level Setting Threshold AL L 7 1 2 4 0 01 6 0 2 4 0 02 5 1 0 4 0 04 4 0 0 4 0
22. ls is activated upon power up reset or when loop inductance changes beyond the tuning range Backplane serial communications in half duplex transmit amp receive data lines that can be used to monitor detector operation and loop frequency MTS4E Approvals The MTS4E module assembly complies with RoHS specifications EMC CE Marking This Product complies with the Highways Agency s and European specifications TR2512A 2005 encompassing the EMC specification for Road Traffic Systems EN50293 including EN55022 Class B and the Environmental specifications TR3120C 2006 2007 Peek Traffic Limited Page 5 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C 2 Input and Output Interface 2 1 Input amp Output Connector Euro card format Rear mounted DIN41612 edge connector 2 x 32 pins International format Card Gold Edge Fingers 2 x 22 fingers 2 2 DC or AC Input Supply 2 2 1 DC Supply Range 10 3 to 40 VDC Input Current with Opto Isolated Outputs for 4 Channel Detector Current At12VDC 051mA nominal Current At24VDC 033mA nominal Current At35VDC 028mA nominal Input Current with Relay Outputs for 4 Channel Detector Current At12VDC 085mA nominal Current At24VDC 053mA nominal Current At 35VDC 042mA nominal Supply s Maximum Ripple Voltage 700mV pk to pk OR 2 2 2 Isolated 11 to 26 vac Supply 2 3 Loop Input Loop frequency range is between 20 and 117
23. r Interface Rear mounted DIN41612 edge connector RowA Row B Pin Pin 1a O P CH1 relay N C or ss ve 1b CH1 i f output ve 2a Future use RS485 RX full duplex 2b Detect O P CH1 relay common or ss ve 3a Detect O P CH1 relay N O or ss ve 3b CH1 i f output ve 4a Not connected 4b Master fault O P relay N C or ss ve 5a Loop CH1 5b Not connected 6b Loop CH1 7a Master fault O P relay N O or ss ve 7b Not connected 8a CH2 i f output ve 8b Detect O P CH2 relay N C or ss ve 9a Detect O P CH2 relay 9b Future use RS485 RX full duplex common or ss ve 10a CH2 i f output ve 10b Detect O P CH2 relay N O or ss ve 11a Master fault O P relay common 11b Not connected 12a Not connected 12b Loop CH2 13a Loop CH2 13b Not connected 14a OV reference for RS232 14b Chassis ground 15a Detect O P CH3 relay N C or ss ve 15b CH3 i f output ve 16a Future use RS485 RX full duplex 16b Detect O P CH3 relay common or ss ve 17a Detect O P CH3 relay N O or ss ve 17b CH3 i f output ve 18a Not connected 18b 24V AC supply 19a Loop CH3 19b Not connected 20a Not connected 20b Loop CH3 21a 24V AC supply 21b IDENT bit 1 22a CH4 i f output ve 22b Detect O P CH4 relay N C or ss ve 23a Detect O P CH4 relay 23b Future use RS485 RX full duplex common or ss ve 24a CH4 i f output ue 24b Detect O P CH4 relay N O or ss ve 25a Serial comms TDO 25b Not connected 26a Not connected 26b Loop CH4 27a Loop CH4 27b Not connected 28a No
24. t connected 28b Serial comms RDI 29a Reset input 29b IDENT bit 2 30a IDENT bit 3 30b 24V DC supply 31a LED ON OFF OFF pin to OV control 31b IDENT bit 4 32a IDENT bit 5 32b OV DC supply and serial comms common Connections with individual channel Opto isolated fault output Notes i The outputs are in the normal condition when the detector is powered no vehicle is on the loop and no failsafe condition exists ii The power supply to all detectors in a rack must be switched off whilst any detector is being fitted to or removed from the rack 2006 2007 Peek Traffic Limited Page 19 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C 7 Loop Installation Guide Loops must be installed to the requirements of both this document and the latest issue of Department of Transport Specification MCH1540 Where installation guidelines are given by both documents for the same procedure precedence must always be given to the procedure that defines the highest level of performance accuracy or reliability Loop installation will require that the cabinet and plinth have already been installed so that the loop cables may be terminated in the cabinet 7 1 Road Loop Pair in one lane Road Loops should be installed according to the following guidelines 1 2 One pair of matching loops per lane N configuration Rectangular loop with 3 turns per loop Standard length for each loop is
25. tor with the using 200m N Turns uH Loop Tail uH 200 metre Feeder feeder 3 88 95 147 0 377 0 113 4or5 4 154 38 147 0 512 0 154 Aor 5 5 240 16 147 0 620 0 186 Aor 5 6 342 87 147 0 699 0 21 Aor 5 For 250 metre Feeder amp Loop AL of 0 396 Inductance of Ratio of Loop AL of 0 3 as Sensitivity Level Road Road Loop Inductance of 250 Inductance to Total seen by the Setting using Loop 1 8 x 2 metre metre Feeder Inductance R Detector with the 250m feeder N Turns uH Loop Tail uH 250 metre Feeder 3 88 95 182 0 328 0 098 4or5 4 154 38 182 0 459 0 138 4or5 5 240 16 182 0 569 0 171 4or5 6 342 87 182 0 653 0 196 4or5 For 300 metre Feeder amp Loop AL of 0 3 Inductance of Ratio of Loop AL of 0 3 as Sensitivity Level Road Road Loop Inductance of 300 Inductance to Total seen by the Setting using Loop 1 8 x 2 metre metre Feeder Inductance R Detector with the 300m feeder N Turns uH Loop Tail uH 300 metre Feeder 3 88 95 217 0 291 0 0872 5 4 154 38 217 0 415 0 125 5 or 4 5 240 16 217 0 525 0 157 5 or 4 6 342 87 217 0 612 0 184 5 or 4 2006 2007 Peek Traffic Limited Page 24 of 26 19 02 2007 PEEK MTS4E User Manual 99 5016 1C For 200 metre Feeder amp Loop AL of 0 2 Inductance of Ratio of Loop AL of 0 2 as Sensitivity Level
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