Nortech PD230 Enhanced Vehicle Detector 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]
E-mail: [e-mail] URL: www.nortech.co.za

PD230 Enhanced

Vehicle Detector

USER MANUAL

NORTECH INTERNATIONAL (PTY) LTD
All rights reserved.
Copyright © 2009
Document No.: 302UM0017_01
Date of issue: July 2010

This document is for information only and unless otherwise indicated it 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 alte

rations without notice.

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Table of Contents

1. INTRODUCTION ........................................................................................................................ 5

2. TECHNICAL DATA .................................................................................................................... 7

2.1 Functional Data .......................................................................................................................... 7

2.2 Electrical Data ............................................................................................................................ 7

2.3 Environmental Data .................................................................................................................... 8

2.4 Mechanical Data ......................................................................................................................... 9

2.5 Approvals ................................................................................................................................... 9

3. OPERATING INSTRUCTIONS ................................................................................................ 10

3.1 Hardware Set-up ...................................................................................................................... 10

3.2 Switch Setting Selections ......................................................................................................... 10

3.2.1 Frequency Switch ............................................................................................................ 10

3.2.2 Sensitivity ........................................................................................................................ 10

3.2.3 Automatic Sensitivity Boost ............................................................................................. 11

3.2.4 Presence Time ................................................................................................................ 11

3.2.5 Pulse / Presence ............................................................................................................. 11

3.2.6 Reset Switch .................................................................................................................... 11

3.3 Internal Link Selection .............................................................................................................. 13

3.4 Power Fail (Option) .................................................................................................................. 13

3.5 Front Panel Indicators .............................................................................................................. 13

4. PRINCIPLE OF OPERATION .................................................................................................. 15

4.1 Detector Tuning ........................................................................................................................ 15

4.2 Detector Sensitivity ................................................................................................................... 15

4.3 Modes of Operation .................................................................................................................. 16

4.3.1 Presence Mode ............................................................................................................... 16

4.3.2 Pulse Mode ...................................................................................................................... 16

4.3.3 AB Logic Presence Mode (Barrier Operation) ................................................................. 17

4.3.4 AB Logic Pulse Mode (Counting Logic) ........................................................................... 20

4.4 Response Times ...................................................................................................................... 23

5. INSTALLATION GUIDE ........................................................................................................... 25

5.1 Product Safety Requirements .................................................................................................. 25

5.2 Operational Constraints............................................................................................................ 25

5.2.1 Environmental Factors to Consider ................................................................................. 25

5.2.2 Crosstalk .......................................................................................................................... 26

5.2.3 Reinforcing ...................................................................................................................... 26

5.3 Loop and Feeder Material Specification ................................................................................... 26

5.4 Sensing Loop Geometry ........................................................................................................... 27

5.5 Loop Installation ....................................................................................................................... 27

6. CONFIGURATION ................................................................................................................... 30

6.1 PD231 Enhanced Detector : English ........................................................................................ 30

6.2 PD232 Enhanced Detector: English ......................................................................................... 31

6.3 PD234 Enhanced Detector: English ......................................................................................... 31

7. APPLICATIONS ....................................................................................................................... 32

8. CUSTOMER FAULT ANALYSIS .............................................................................................. 33

8.1 Fault Finding ............................................................................................................................. 33

8.2 DU100 – Detector Diagnostic Unit ........................................................................................... 34

8.2.1 Interpretation of the DU 100 readings ............................................................................. 34

8.2.1.1 Frequency ......................................................................................................................... 34

8.3 Functional Test ......................................................................................................................... 36

APPENDIX A - FCC ADVISORY STATEMENT .............................................................................. 37

APPENDIX B – INSTALLATION OUTDOORS ............................................................................... 38

Appendix B.1

IEC 60950-22:2005 – Outdoor cabinet ............................................................... 38

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Appendix B.2

IEC 60950-22:2005 - Northern Europe ............................................................... 38

Appendix B.3

IEC 60950-1:2005 – Overvoltage Category........................................................ 38

APPENDIX C - REQUEST FOR TECHNICAL SUPPORT FORM .................................................. 39

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WARNING: 1. THIS UNIT MUST BE 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.

ONLY SERVICE PERSONNEL MAY OPEN THE
UNIT TO CHANGE INTERNAL SETTINGS!

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 “PD230 Enhanced Two Channel Inductive Loop Vehicle Detector” is a dual channel
microprocessor based detector designed specifically for parking and vehicle access control
applications. The PD230 Enhanced detector has been designed using the latest technology in order
to meet the requirements of a vast number of parking applications in terms of operating conditions. A
number of internal functional options are 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 around the popular PD130 series of single channel detectors for
ease of installation and convenience. The various modes are selected by changing the position of
switches on the front of the unit.

The detector oscillator is multiplexed to eliminate any possibility of crosstalk between the loops
connected to the detector.

The switches allow for different loop frequency settings, sensitivity settings and mode settings.
The unit has a number of internally selectable options for configuration of the relay outputs.

The PD230 Enhanced 2 Channel Vehicle Detector provides visual outputs (LED) on the front of the
enclosure and relay change-over contacts at the 11 pin connector at the rear of the enclosure. The
power LED indicates that the unit has been powered. The channel status LED’s below indicate that a
vehicle is present over the loop and when there is a fault on the loop. The Presence relays are
normally fail-safe and will close on a vehicle detect, loop failure or in the event of a power failure.

Available is an additional Power-fail function which enables a short (of up to ten minutes) power-fail,
to have no effect on the operation of the detector when power is restored. The detector will revert to
the same state as prior to power failure, when power is restored.

For additional information refer to the following documents:

Data Sheet - PD230 Enhanced 2 Ch Vehicle Detector Document No. 302DS0002
Installation Leaflet Document No. 879LF0006
Diagnostic Unit DU100 User Manual Document No. 895UM0001

2/4 Ch Vehicle Detector Installation Guide Document No. 879LF0006

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2. TECHNICAL DATA

2.1 Functional Data

Tuning Fully automatic
Self-tuning range 20 to 1000 µH
Sensitivity Four step switch selectable:

High 0.02% ∆ L/L
Medium-High 0.05% ∆ L/L
Medium-Low 0.10% ∆ L/L
Low 0.50% ∆ L/L

Frequency Four step selectable:
Frequency dependent on loop size

Automatic Sensitivity Boost Switch selectable
Modes Output relays may operate in the Presence ( fail-safe ),

Pulse or Direction logic modes
Presence Time Switch selectable:

Limited presence
Permanent presence

Pulse Output Duration 150/250 millisecond options
Response Times 100 milliseconds
Drift Compensation Rate Approx. 1% ∆ L/L per minute
Visual Indication 1 x Power LED - Red

2 x Channel Status LEDs - Green
Relay Outputs 2 x Relays, User Configurable as Presence or Pulse outputs,

Normally Open (N/O) contacts

(Opto-Isolated Outputs are available on request. MOQ applies)
Reset Reset by push button on front of enclosure
Surge Protection Loop isolation transformer, gas discharge tubes,

and Zener diode clamping on loop input
Power Fail (Option) 10 minutes memory retention of detector state on power failure.

2.2 Electrical Data

Power requirements 120V AC ± 10% 48 to 62Hz (PD231 models)
230V AC ± 10% 48 to 62Hz (PD232 models)
PD231 and PD232 models: 1.5 VA Maximum at 230V

12V - 10% to 24V + 10% DC/AC 48 to 62Hz (PD234 models)

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PD234 models: 1 VA Maximum at 12V

Relay Contact Rating 2 x Relays rated - 5A @ 230 VAC

For ambient temperatures above 60 °C De-rate the re lay maximum
current as per graph below

Opto-Isolated Output rating 33 V 50 mA

Note - Opto-Isolated Outputs are available on request. MOQ applies

2.3 Environmental Data

Storage Temperature -40°C to +85°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
IP Rating IP 30. - 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 type ( JEDEC No. B11– 88 )
Size of Housing 78mm ( High ) x 41mm ( Wide ) x 80mm ( Deep )

2.5 Approvals

C.E. 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 INSTRUCTIONS

3.1 Hardware Set-up

The PD230 Enhanced 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 Switch Setting Selections

3.2.1 Frequency Switch

Where more than one detector is used at the same site, the
detectors must be set-up to ensure that there is no CROSSTALK
(interference) between adjacent loops connected to different
detectors.

For more information about crosstalk refer to section 5.2.2.
The frequency switches are the lower two switches, numbered 1 and

2. There are four frequency selections and are set as follows:

The frequency switches allows the operating frequencies of the
detector to be shifted higher or lower depending on the switch
setting.

The operating frequency of the detector channel is determined by:

Inductance of the loop and feeder cable
Detector frequency switch 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.

When the frequency switch setting is altered, the operating frequency of both detector channels will
shift. Because the unit has a common oscillator and the multiplexer connects the loops alternatively
to this oscillator.

3.2.2 Sensitivity

S1 S2

Frequency Setting

Off Off High frequency
Off On Medium-High frequency
On Off Medium-Low frequency
On On Low frequency

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The sensitivity of the detector allows the detector to be selective as to the change of
inductance necessary to produce an output. There are four sensitivity selections and
are set as follows: -

Channel1 Channel 2

S6 S5 S4 S3

Off Off Off Off High
On Off On Off Medium-High
Off On Off On Medium-Low
On On On On Low

3.2.3 Automatic Sensitivity Boost

Automatic sensitivity boost is a mode which alters the undetect level of the detector. This mode is
selected by switch No. 7 on the front of the enclosure and is set as follows: -

S7

Off Disabled
On Enabled

Automatic sensitivity boost causes the sensitivity to be boosted to a maximum on detection of the
vehicle, and maintained at this level during the presence of the entire vehicle over the loop. When
the vehicle departs the loop and detection is lost the sensitivity reverts to the pre-selected level.

3.2.4 Presence Time

The presence time may be set to permanent presence or to limited presence. In permanent presence
mode the detector will continuously compensate for all environmental changes whilst there is a
vehicle present over the loop. In limited presence mode there will be a finite time that the detector will
remain in detect. This time is dependent on the change of inductance that the vehicle caused. The
presence mode is set with switch No. 8 and is set as follows: -

S8

Off Limited Presence
On Permanent Presence

3.2.5 Pulse / Presence

The channel’s relay may be set to either Pulse Mode or Presence Mode with switches No. 9 & No.
10 as shown in the table below: -

Channel1 Channel 2

S10 S9

Off Off Presence
On On Pulse

3.2.6 Reset Switch

The detector automatically tunes to the inductive loops connected to it when power is applied,
whether on initial installation or after any break in the power supply. Should it be necessary to retune
the detector, as may be required after the changing of any switch selections or after moving the
detector from one installation to another, momentary operation of the RESET switch will initiate the
automatic tuning cycle.

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3.3 Internal Link Selection

WARNING - ONLY SERVICE PERSONNEL MAY OPEN THE UNIT TO CHANGE

INTERNAL SETTINGS!

There is one 3 way link located inside the PD230 Enhanced detector housing, which is used to alter
the mode of operation of the detector. The link has been placed inside the unit to avoid incorrect
operation due to selection by an unauthorised operator.

For a description of the AB Logic mode refer to section 4.3 “Modes of Operation” below
For the PD230 Enhanced parking detector, the default setting for both channel output relays is

presence mode (Front panel switches 9 & 10 OFF) with no AB logic (i.e. no jumper on LK1).

3.4 Power Fail (Option)

Power-Fail-Option is available on request. MOQ applies
The detector (with Power-Fail Option) is able to retain the output state for a power failure of not

greater than 10 minutes. Thus, when the power is restored, the detector will not re-tune but return to
the detect state prior to the power failure. If a vehicle was on the loop during power failure, it will
remain detected when power is restored.

3.5 Front Panel Indicators

While the detector is tuning, the Channel LED will indicate the “mode” status of the detector.
i) Any Channel output operating in the presence or pulse modes will come on and extinguish when

the system is tuned.
ii) When the AB Logic mode is selected, the Channel LED’s will alternatively flash slow and extinguish

when the system is tuned.