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Nortech International (Pty) Ltd 
PO Box 4099 

32A Wiganthorpe Road 

Willowton Hub 

Pietermaritzburg 

Pietermaritzburg 

3201 South Africa 

3200 South Africa  

Reg. No: 98/1095 

 
Tel: (033) 345 3456 

Int. Tel: +27 33 345 3456 

Fax: (033) 394 6449 

Int. Fax: +27 33 394 6449 

Email: [email protected] 

URL: www.nortech.co.za 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

TD136 Enhanced  

Vehicle Detector 

User Manual 

 
 
 
 
Nortech International (Pty) Ltd 
All rights reserved 
Copyright © 2009 
Document Number: 301UM0031_01 
Date of Issue: September 2009

 

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. 

Summary of Contents for TD136

Page 1: ...ocument 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 APPROVALS Originator Unknown updated K Mbatha Checked ______________________________ Date __________________ Engineering Manager _________...

Page 2: ...co za URL www nortech co za TD136 Enhanced Vehicle Detector User Manual Nortech International Pty Ltd All rights reserved Copyright 2009 Document Number 301UM0031_01 Date of Issue September 2009 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 specificat...

Page 3: ...Safety Requirements 14 5 2 Operational Constraints 14 5 2 1 Environmental Factors to Consider 14 5 2 2 Crosstalk 15 5 2 3 Reinforcing 15 5 3 Loop and Feeder Specification 15 5 4 Sensing Loop Geometry 16 5 5 Loop Installation 16 6 CONFIGURATION 18 6 1 TD136 Enhanced 120 VAC Vehicle Detector Order number 305FT0004 18 6 2 TD136 Enhanced 230 VAC Vehicle Detector Order number 305FT0001 19 6 3 TD136 Enh...

Page 4: ... Detector User Manual Page 3 of 29 Appendix B 1 IEC 60950 22 2005 Outdoor cabinet 26 Appendix B 2 IEC 60950 22 2005 Northern Europe 26 Appendix B 3 IEC 60950 1 2005 Overvoltage Category 26 APPENDIX C REQUEST FOR TECHNICAL SUPPORT FORM 27 ...

Page 5: ...ys suspend traffic through the barrier area during installation and testing that may result in unexpected operation of the barrier WARNING 6 USA FCC Advisory Statement Refer to Appendix A at the end of this document WARNING 7 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...

Page 6: ...allation and convenience The various modes are selected by changing the positions of the switch on the front of the unit The switches allow for different loop frequency settings sensitivity settings and mode settings The TD136 Enhanced Vehicle Detector provides visual output LED on the front of the enclosure and relay change over contacts are taken on the 11 pin connector at the rear of the enclos...

Page 7: ... Second 4 Minutes 40 Minutes No fixed time out dependant on inductance change Approx 1 hour for 3 L L Delay Time Switch selectable 0 Seconds 10 Seconds 20 Seconds 30 Seconds Fault Output Separate fault monitor output relay Operates under the following conditions 1 Loop open short circuit 2 Detector power fault Response Times Turn on 60 milliseconds Turn off 60 milliseconds Drift Compensation Rate ...

Page 8: ...aximum 230 V Relay Contact Rating Relays rated 5 A 230 VAC Optional Opto Isolated 50mA 30VDC For ambient temperatures above 60 C De rate the rel ay Maximum current as per graph below 2 3 Environmental Data Storage Temperature 40 C to 80 C Operating Temperature 40 C to 70 C Humidity Up to 95 relative humidity without condensation Circuit protection Conformal coating over the PCB and all components ...

Page 9: ... ABS blend Mounting Position Shelf or DIN rail mounting Connections 11 pin Submagnal JEDEC No B11 88 Size of Housing 78mm H X 41mm W X 78mm D 80 mm 75 9 mm 77 7 mm 40 6 mm 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 ...

Page 10: ...ium High Off On Medium Low On On Low The frequency switches allows the loop to be shifted higher or lower depending on the switch position The frequency of the loop is determined by the loop size and the frequency of the switch simply causes a frequency shift on the loop Where more than one detector is used the detectors must be set up to ensure that there is no cross talk interference between the...

Page 11: ...a vehicle with a duration of 1 second The detector will immediately re adjust to the normal operating point and will give another detect in the event of a further change in the loop inductance i e the detector may be used as a passage detector in this mode The 4 minute and 40 minute settings work in the same way as the 1 second setting however the detector will now give outputs of 4 minutes or 40 ...

Page 12: ...ile the detector is tuning the ON Red LED will glow The OUTPUT LED Green will extinguish when the system is tuned The green LED will flash at a rate of 1 Hz during tuning This is used to indicate the frequency of the loop to the user Every flash of the LED is equivalent to 10 kHz It will stop when the operating frequency is reached This operation is also performed whenever the reset button is depr...

Page 13: ...ent 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 4 1 Detector Tuning Tuning of the detector is fully automatic When power is applied to the detector upon installation of the system or when a reset is initiated the detector will automatically tune itself ...

Page 14: ...the detector will give a continuous output during the presence of a vehicle over the inductive loop providing that the preset time has not expired Upon expiry the detector will undetect and tune out the vehicle over the loop The presence output is known as a fail safe output This implies that in the event of a power failure the detector will give a detect output The fault relay is also failsafe an...

Page 15: ...dels and a fuse for DC models WARNING This product must be installed in an enclosure WARNING No user serviceable parts inside Warranty void if cover removed ONLY SERVICE PERSONNEL MAY OPEN THE UNIT TO CHANGE THE INTERNAL SETTINGS WARNING Only use CE approved 11 pin relay bases such as Nortech Part No CTR119090 or equivalent As an alternative to the 11 pin realy base Nortech has a 11 pin wiring har...

Page 16: ...ossible The slot depth should be kept as shallow as possible taking care that the feeder remains exposed after the sealing compound has been applied 5 3 Loop and Feeder 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 ha...

Page 17: ... loops with alternate three and four turn windings For additional Information on loop geometry refer to the following documents INDUCTIVE LOOP VEHICLE DETECTION Nortech Doc No MKT01 TRAFFIC DETECTION CONCEPTS Nortech Doc No MKT02 TRAFFIC APPLICATION MANUAL Nortech Doc No MKT04 5 5 Loop Installation All permanent loop installations should be installed in the roadway by cutting slots with a masonary...

Page 18: ...t Details Figure 5 1 Adjacent loops connected to different detector modules 45 CROSSCUT TO PROVIDE STRESS RELIEF TRAFFIC DIRECTION MIN DISTANCE APART MAX DISTANCE APART 2 m Road Width 2 m 3 m Road Width 4 m No Limit SAW CUTS 2 m Depending on Road Width CURB ROAD EDGE 300mm 300mm 1 m 1 m ...

Page 19: ... contact descriptions refer to the tuned and undetected state 6 1 TD136 Enhanced 120 VAC Vehicle Detector Order number 305FT0004 11 pin connector wiring for TD136 Enhanced Vehicle 120 VAC Detector Order number 305FT0004 301FT0045 Wiring Harness Wire COLOUR 11 PIN Connector Pin No FUNCTION Red 1 Live Power supply 230V 10 50 60 Hz Black 2 Neutral Grey 3 Fault Relay N O Violet 4 Fault Relay Common Ye...

Page 20: ...only applies to wiring harness Part No 301FT0041 Other wiring harnesses will have different wire colour to PIN No assignments 6 3 TD136 Enhanced 12 to 24 VAC DC Vehicle Detector Order number 305FT0010 11 pin connector wiring for TD136 Enhanced Vehicle 12 to 24 VAC DC Detector Order number 305FT0010 301FT0041 Wiring Harness Wire COLOUR 11 PIN Connector Pin No FUNCTION Red 1 Live Power supply 12V 10...

Page 21: ...tions in the traffic and vehicle control environments For VA Vehicle Actuated or SVA Semi Vehicle Actuated traffic intersection control Some of the features that make the TD136 Enhanced Vehicle Detector ideal for these purposes have been described in the preceding paragraphs For more details on traffic applications refer to Traffic Applications Manual Document No MKT0004 ...

Page 22: ...for 1 second and OFF for second Unit cannot tune to the loop due to faulty loop or feeder connection Loop may be too small or too large Faulty detector unit Check loop installation and connections Recut as per installation instructions Replace unit After tuning the loop output LED flashes intermittently and the relay chatters The loop is getting spurious detects due to a Crosstalk with adjacent de...

Page 23: ...nvaluable in providing information about intermittent faults 7 Crosstalk Allows for the comparison of the operating frequencies of detector loops in close proximity to each other If the operating frequencies are to close the DU100 test will indicate a failure For further information refer to the Diagnostic Unit DU100 User Manual Document No 895UM0001 It is highly recommended that after installatio...

Page 24: ...feeder cable Possibly the wire insulation has deteriorated and moisture is causing a short to earth or that 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 Diagnostic Unit DU100 User Manual Document No 895UM0001 8 2 1 3 Sensitivity For a standard loop of 1 0 metres by 2 0 metres with 2 turns circum...

Page 25: ...5 mm wire Y 238 mm 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 The PRESENCE output relay will operate The PULSE relay will operate momentarily approximately 150ms duration To check the sensitivity presence time etc a calibrated tester should be used which compromises of a calib...

Page 26: ...icular 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...

Page 27: ...pollution degree 2 Appendix B 2 IEC 60950 22 2005 Northern Europe To achieve outdoor operation down to 50 C as requ ired 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 PD130 Enhanced Detector Appendix B 3 IEC 60950 1 2005 Overvoltage Category If the unit is likely to be exposed to transient overvoltage g...

Page 28: ..._______________________ Postal address ____________________________________ _____________________________________ _____________________________________ Product Model i e TD136 Enhanced Vehicle Detector _____________________________________ Product FT No 305FT_____________ Product Serial Number _______________________ Site Name __________________________________ Detector No at the site ____________...

Page 29: ..._______________________________ Are there any power cables below the loop if yes please give details _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ Are there any other loops in the area if so how many ________ and...

Page 30: ...en LED flash____________ Inductance Change for each type of vehicle that is encountered on this site Use the maximum sensitivity reading from the DU100 and reset the detector between each reading Bicycle __________ L L Motorbike __________ L L Car __________ L L Articulated truck __________ L L Four wheel drive __________ L L 5 Ton Tip Truck __________ L L Forklift __________ L L Other specify typ...

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