Nortech PD160 Enhanced Series User manual

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: [phone] Int. Tel: [phone]
Fax: [phone] Int. Fax: [phone]
Email: [e-mail] URL: www.nortech.co.za
PD160 Enhanced Series
Inductive Loop Vehicle Detector
USER MANUAL
NORTECH INTERNATIONAL (PTY) LTD
All rights reserved
Copyright © 2011
Document Number: 304UM0001_00
Date of Issue: October 2011
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.

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Table of Contents
1. INTRODUCTION........................................................................................................................................5
2. TECHNICAL DATA ...................................................................................................................................6
2.1 Functional Data ......................................................................................................................................6
2.2 Electrical Data ........................................................................................................................................7
2.3 Environmental Data................................................................................................................................7
2.4 Mechanical Data.....................................................................................................................................8
2.5 Approvals................................................................................................................................................8
3. OPERATING PROCEDURE......................................................................................................................9
3.1 Hardware Set-Up....................................................................................................................................9
3.2 LCD Menu System .................................................................................................................................9
3.2.1 Idle Display....................................................................................................................................10
3.2.2 Frequency .....................................................................................................................................10
3.2.2.1 Automatic Frequency Selection.................................................................................................11
3.2.3 Sensitivity ......................................................................................................................................12
3.2.3.1 Automatic Sensitivity Boost .......................................................................................................12
3.2.4 Presence .......................................................................................................................................13
3.2.5 Relay .............................................................................................................................................13
3.2.5.1 Relay Pulse Width .....................................................................................................................14
3.2.5.2 Relay Output Delay (Filter)........................................................................................................14
3.2.5.3 Output polarity ...........................................................................................................................15
3.2.6 Diagnostics....................................................................................................................................15
3.2.7 Reset.............................................................................................................................................17
3.2.7.1 Power fail...................................................................................................................................18
3.3 Front Panel Indicator ............................................................................................................................19
4. PRINCIPAL OF OPERATION .................................................................................................................20
4.1 Detector Tuning....................................................................................................................................20
4.2 Detector Sensitivity...............................................................................................................................20
4.3 Types of Output....................................................................................................................................21
4.3.1 Presence Output...................................................................................................................................21
4.3.2 Pulse Output.........................................................................................................................................22
4.4 Response Times...................................................................................................................................22
5. INSTALLATION GUIDE ..........................................................................................................................23
5.1 Product Safety Requirements...............................................................................................................23
5.2 Operational Constraints........................................................................................................................23
5.2.1 Environmental Factors to Consider...............................................................................................23
5.2.2 Crosstalk .......................................................................................................................................24
5.2.3 Reinforcing ....................................................................................................................................24
5.3 Loop and Feeder Material Specification...............................................................................................24
5.4 Sensing Loop Geometry.......................................................................................................................25
5.5 Loop Installation ...................................................................................................................................26
6. CONFIGURATION...................................................................................................................................28
6.1 PD161 Enhanced Series Detector : English.........................................................................................28
6.2 PD162 Enhanced Series Detector : English.........................................................................................29
6.3 PD164 Enhanced Series Detector : English.........................................................................................29
7. APPLICATIONS ......................................................................................................................................30

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8. CUSTOMER FAULT ANALYSIS ............................................................................................................31
8.1 Fault Finding.........................................................................................................................................31
8.2 Detector On Board Diagnostics............................................................................................................32
8.3 Functional Test.....................................................................................................................................32
APPENDIX A - FCC ADVISORY STATEMENT ................................................................................................33
APPENDIX B – INSTALLATION OUTDOORS..................................................................................................34
Appendix B.1 IEC 60950-22:2005 – Outdoor cabinet..................................................................................34
Appendix B.2 IEC 60950-22:2005 - Northern Europe .................................................................................34
Appendix B.3 IEC 60950-1:2005 – Overvoltage Category..........................................................................34
APPENDIX C – REQUEST FOR TECHNICAL SUPPORT FORM....................................................................35

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WARNING: 1. This unit must be grounded (earthed) !
WARNING: 2. Disconnect power before working on this unit !
WARNING: 3. Installation and operation by service personnel only !
WARNING: 4. No user serviceable parts inside. No internal settings.
Warranty void if cover removed !
WARNING: 5. Always 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 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
environmental friendly manner.

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1. INTRODUCTION
The PD160 Enhanced Series Single Channel Inductive Loop Vehicle Detector is a 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 PD160 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 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 PD160 provides additional visual outputs (LED’s) on the
front of the enclosure to provide an indication of the state of the channel as well as the detector itself.
The channel LED indicates 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 the
channel 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.
Related Documents:
Data Sheet Document No. 304DS0001
Installation Leaflet Document No. 304LF0001
1 Channel Vehicle Detector Installation Guide Document No. 300LF0006

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2. TECHNICAL DATA
2.1 Functional Data
Tuning Fully Automatic
Self-tuning range 20 µH to 1500 µH
Sensitivity Fifteen step adjustable on the LCD menu
Ranging from 0.01% L/L to 5% L/L
ASB (Automatic Sensitivity Boost) selectable
Frequency Eight step adjustable on LCD menu
12 – 80 kHz (Frequency determined by loop geometry)
AFS (Automatic Frequency Selection) selectable
Output Configuration 2 output relays (3
rd
output optional)
User configurable for: Presence on detect or fault
Pulse on detect, un-detect, or fault
Normally Open (N/O) contacts
(Opto-Isolated outputs are available on request. MOQ applies)
Pulse Output Duration Eight step selectable on the LCD menu
Ranging from 50ms to 2seconds (Default set to 150ms)
Filter (Delay) Eight step selectable output filter
Ranging from 100ms to 10seconds (Default is OFF)
Presence Method Permanent or Limited to approximately 1 hour for a 1% L/L
Presence Time Eight step selectable on LCD menu
Ranging from 30seconds to 60minutes (Default is OFF)
Drift Compensation Rate Approx. 1 %∆L/L per minute
Response Times 100-200 milliseconds (subject to sensitivity level and level of detect,
as well as speed of vehicle over the loop)
Visual Indications 1 x Power / Status LED – Red
1 x Channel Status LED – Green
LCD diagnostics displays
Reset Selectable through the menu structure for:
Resetting Channel Statistics
Retuning Channel
Resetting settings to factory default
Surge protection Loop isolation transformer, gas discharge tubes,
and Zener diode clamping on loop input
Power Fail Selectable to have infinite memory retention of detector state on
power failure (provided certain criteria are met. Refer to section
3.2.7.1.

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2.2 Electrical Data
Power requirements 120 V
AC
± 10% (48 to 62Hz) (PD161)
230 V
AC
± 10% (48 to 62Hz) (PD162)
Requirement: 1.5 VA Maximum @ 230 V
12 V -10% to 24 V +10% DC/AC (48 to 62Hz) (PD164)
Requirement: 1 VA Maximum @ 12 V
Relay Contact Rating Relays rated – 1 A @ 230 V
AC
Optional – Opto Isolated 50mA @ 30V
DC
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 -30°C to +70°C (as a funct ion of the LCD)
(below -20°C the LCD response time is affected)
Humidity Up to 95% relative humidity without condensation
Circuit protection Conformal coating over the PCB and all components
IP Rating IP30 – This product MUST be installed in an enclosure

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2.4 Mechanical Data
Housing Material ABS blend
Mounting Position Shelf or DIN rail mounting
Connections 11-pin Submagnal (JEDEC No. B11-88)
Size of Housing 78mm ( High ) X 41mm ( Wide ) X 80mm ( Deep )
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
80 mm
75.9 mm 77.7 mm
40.6 mm

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3. OPERATING PROCEDURE
3.1 Hardware Set-Up
The PD160 Enhanced Series single 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
Normal Display Frequency
Settings
Sensitivity
Settings
Presence
Settings
Relay Settings
Diagnostics
Reset Settings
Go back…

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3.2.1 Idle Display
The idle display is the normal display shown when not in the menu
system. It displays the model of the unit. Any button pressed will
enter the menu system. The up () 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, if a button is inadvertently
pressed, or during the use of the menu system, the menu will go back
one display every 25 seconds. This is not the case in the diagnostics
thus keeping certain desired information on display.
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 immediate effect.
3.2.2 Frequency
The frequency settings menu is the first menu and is used to shift the
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)
occurs between adjacent loops connected to different detectors. This
is achieved by ensuring that the loops of the two detectors are
spaced sufficiently apart (approximately 2 metres between adjacent
edges) and also ensuring that the detectors are set to different
frequencies.
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 loop to be shifted higher or lower
depending on the selection. However, the operating frequency of the detector channel is determined
by a combination of:
Inductance of the loop and feeder cable
Detector frequency settings
The operating frequency of the 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
As a general rule, the detector connected to the inductive loop with the greatest inductance should be
set to operate at the lowest frequency.
If the frequency reading from the on-board diagnostics is close to the maximum frequency, the
inductance of the loop is too low and more turns need to be added to the loop. However if the reading
is close to the minimum frequency, the inductance of the loop is too high and you need to remove
turns from the loop.
If the detector 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 %∆L/L detect will cause the
frequency to go outside the limits and cause a retune.