SWARCO SW2224 User manual

SWARCO
SW2
224
Manual
SW2224
LOOP DETECTOR
WITH ASTRA-SWISS-SPECIFICATION
SW2224_BE_10

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Content
1Introduction.................................................................................................................................... 4
1.1 About this manual.................................................................................................................... 4
1.2 Usage according to regulations............................................................................................... 4
1.3 Label ........................................................................................................................................ 5
1.4 Further documentation ............................................................................................................ 5
1.5 Symbols ................................................................................................................................... 5
1.6 Safety instructions ................................................................................................................... 6
2Product description....................................................................................................................... 7
2.1 General .................................................................................................................................... 7
2.2 Overview of the essential product characteristics ................................................................... 9
3Installation of the SW2224.......................................................................................................... 10
3.1 Installation and start-up of the unit ........................................................................................ 10
3.2 Overvoltage protection and loop diagnosis ........................................................................... 10
3.3 Connection of the feeder cable.............................................................................................. 10
3.4 Parameterizing the traffic data acquisition ............................................................................ 11
4Operating the SW2224 with LoopMaster................................................................................... 13
4.1 General .................................................................................................................................. 13
4.2 Functionalities........................................................................................................................ 13
5Display and operating elements at the front panel.................................................................. 15
6Alignment and error diagnosis .................................................................................................. 17
6.1 Alignment............................................................................................................................... 17
6.2 Error detection and troubleshooting ...................................................................................... 17
6.3 Automatic calibration and control of vehicle detection .......................................................... 19
7Parameters and functionality ..................................................................................................... 21
7.1 Significance of the channel parameters ................................................................................ 21
7.1.1 Channel function............................................................................................................ 21
7.1.2 Frequency range............................................................................................................ 21
7.1.3 Loop type and loop distance.......................................................................................... 24
7.1.4 Vehicle length correction ............................................................................................... 24
7.1.5 Detection of wrong way drivers ..................................................................................... 25
7.1.6 Address data bus........................................................................................................... 25
7.1.7 Sensitivity / measuring time........................................................................................... 25
7.1.8 Hold time........................................................................................................................ 26
7.1.9 Channel flags................................................................................................................. 26
7.1.10 Maximum loop alignment duration................................................................................. 26
7.1.11 Noise threshold.............................................................................................................. 27
7.2 Significance of the device parameters .................................................................................. 27
7.2.1 Language service interface ........................................................................................... 27
7.2.2 Baud rate data bus ........................................................................................................ 27
7.2.3 Detector flags................................................................................................................. 27
7.2.4 LED turn-off time............................................................................................................ 27

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7.3 Significance of the channel diagnostic values....................................................................... 28
7.3.1 Loop length .................................................................................................................... 28
7.3.2 Extended channel flags ................................................................................................. 28
7.3.3 Channel status............................................................................................................... 28
7.3.4 Vehicle classification ..................................................................................................... 28
7.3.5 Channel error................................................................................................................. 28
7.3.6 Alignment counter and hold time exceedance .............................................................. 28
7.3.7 Inductance ..................................................................................................................... 29
7.3.8 Frequency...................................................................................................................... 29
7.3.9 Turn-on threshold, maximum and last amplitude .......................................................... 29
7.3.10 Norm value .................................................................................................................... 29
7.3.11 Alignment cause ............................................................................................................ 29
7.4 Significance of the device diagnostic values ......................................................................... 30
7.4.1 Backplane address data bus ......................................................................................... 30
7.4.2 Front panel switches...................................................................................................... 30
7.4.3 Reset counter, reset cause............................................................................................ 31
7.4.4 Cycle time ...................................................................................................................... 31
7.5 Description of the special functions....................................................................................... 31
7.5.1 Synchronization ............................................................................................................. 31
7.5.2 Notes concerning the data bus function ........................................................................ 32
8Appendix ...................................................................................................................................... 33
8.1 General technical data........................................................................................................... 33
8.2 Technical data of switching outputs ...................................................................................... 34
8.3 Pin assignment multipoint connector (DIN41612 type F and C) ........................................... 35
8.4 Pin assignment service interface (DSUB 9-pole, plug) ......................................................... 36
8.5 Dimensions ............................................................................................................................ 36
8.6 Requirements for the usage according to regulations........................................................... 37
8.7 EC Conformity ....................................................................................................................... 38

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1 Introduction
In this chapter you will find preliminary remarks about the usage of the SW2224, as well as
explanations about the structure of this manual and the usage of symbols.
1.1 About this manual
On the following pages you will learn how to install and operate the device in an appropriate
way.
We attach great importance to the safe, appropriate and effective handling of this device.
It is therefore important to read this manual thoroughly before using the device. In the
manual you will find important instructions helping you to avoid danger and to prolong the
reliability and durability of the device and the accessories.
For your own safety you should read the safety instructions. Follow the instructions closely in
order to avoid danger for yourself and others or damage to the device.
If you have any questions about the SW2224 which are not answered in this manual, or if
you have problems understanding the descriptions, please contact:
SWARCO TRAFFIC SYSTEMS GmbH
Business Unit Detection
Niederkircher Straße 16
54294 Trier
Germany
www.swarco.com/sts
1.2 Usage according to regulations
The SW2224 is solely suited for the detection of vehicles for classification and speed
measurement. Any further usage is not appropriate. Do not use the SW2224 for any other
purpose.
The SW2224 is designed for precise vehicle classification and speed
measurement in interurban systems for traffic data acquisition and traffic control. It
is less suited for urban applications e.g. at traffic light intersections. The conditions
for precise vehicle classification such as constant moving are not fulfilled. For
these kinds of applications we recommend using detector types from our traffic
lights product folio, e.g. IG746CAN (see www.swarco.com/sts/detection).
For further requirements for the usage according to regulations see chapter 8.6.

NOTE

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1.3 Label
The SW2224 is provided with a quality label and serial number. You will need the indications
when talking with the customer service, e. g. ordering accessories or spare parts.
Note here the serial number and name of the device in order to have them available when
needed:
Serial number: ______________________________________________
Device identification: ______________________________________________
This manual is valid for devices with the following order numbers:
•SW2224T10 (order nr. D.000.611.115): type F connector, open collector,
SWISS10 classification, loop type ASTRA, front panel 4 TE
CE-label:
1.4 Further documentation
•“Loop installation TLS“,
SWARCO TRAFFIC SYSTEMS GmbH
•“VTD – Vendor-specific telegram definitions“,
SWARCO TRAFFIC SYSTEMS GmbH
•"Technical delivery terms for roadway stations (TLS)“, BASt (German federal
highway research institute)
•"Richtlinie Verkehrszähler13012 V1.02 “, ASTRA (Swiss federal roads office)
1.5 Symbols
In several places throughout this manual you will find the following symbols stating important
safety instructions:
ATTENTION!
This symbol indicates dangers which might cause damage to people
or property
NOTE
This symbol indicates information for installation and function
of the device


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1.6 Safety instructions
Read the following safety instructions thoroughly and observe them carefully. They are
stated to ensure your own safety and the safety of others and to avoid damage to the device
or accessories.
•Danger of electricity!
Make sure that no liquid may get inside the device. If this happens, interrupt the
power supply to the device at once.
•If you notice any damage, e.g. broken or crushed cables, damaged plugs,
enclosures etc., turn off the device at once, interrupt the power supply and make
sure that the device cannot accidentally be turned on again.
•The device may only be installed, brought into service and repaired by an electro-
technical expert. Inappropriate operation, improper maintenance or not observing
the instructions in this manual can lead to danger.
•Any malfunction of the device which may limit the safety of its users or others must
be removed immediately. All warning and safety labels on the device must be
observed and kept complete and legible.
•The appropriate usage must be observed by all means. For damage resulting from
inappropriate usage the manufacturer will not undertake any liability.
•The device must not be used as a safety component in the sense of the European
Directive 98/37/EC ("Machinery Directive”). In systems with high risk additional
safety measures are necessary.
•The operator of the device must ensure that the chosen means of operation will
not cause damage to material or danger to people and that all security and safety
installations are present and functioning.
•Before installation and first operation please observe the instructions in the
manual.
•The manual must be available at the site of usage at any time. It must be read
thoroughly and applied appropriately by the person responsible for the operation,
maintenance and service of the device.
•Our products are in a constant process of improvement and advancement.
Because of this, read the current manual thoroughly before installation and first
operation.
•Without prior consent of the manufacturer, no modifications, neither mechanical
nor electrical, may be done. Only parts that have the consent of the manufacturer
may be used for backfitting or as accessories. Any violations will lead to the
termination of conformity and the manufacturer’s warranty. The user will
subsequently bear the risk.

NOTE
ATTENTION!

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2 Product description
2.1 General
The SW2224 is a classification detector operating with two induction loops per lane
according to ASTRA-SWISS-specifications.
The SW2224 classifies the vehicles into the ASTRA-SWISS-classes SWISS10, SSSVZ
vehicle classes or car-similar / HGV-similar). When using ASTRA-SWISS loops, the
classification meets the definitions of ASTRA.
The detection quality is not influenced by e.g. the weather. By activating the directional logic,
messages for wrong way drivers can be generated.
The vehicle class is determined by means of the detection curves, which show typical
features for the different classes and the loop type used.
The detector can provide the following single vehicle data via RS232 service interface and
RS485 data interface:
Single vehicle data:
vehicle class, speed (up to 300 km/h), length, distance, driving
direction
Additionally available at data
interface:
Interval occupancy and time gap to calculate the occupancy rate;
single-vehicle occupancy and time gap
SWISS10-vehicle classes:
motorbike / car / car with trailer / van / van with trailer / van with
semitrailer / bus, car / HGV / HGV with trailer / HGV articulated
The classification into SSVZ vehicle classes resp. car-similar /
HGV-similar vehicles is based on the SWISS10 vehicle classes
according to ASTRA guidelines.
Table 1: Data of the SW2224 at the service and data interface

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Single vehicle data is transmitted via the RS485-bus to a controller, which carries out the
further data-aggregation according to ASTRA-specification.
The detector aligns itself automatically to the loops and feed combination connected.
Variations in temperature do not affect the data acquisition. The measurement systems are
permanently checked for short-circuited or open loops and only put in an error status when a
definite malfunction is recognized. If one loop of the TLS double-loop system is defective, the
remaining loop still provides time of occupancy, time gap and a classification of car-similar
and lorry-similar vehicles. Speed and vehicle length cannot be detected anymore.
Short measurement intervals and a particular speed measurement processes ensure the
high accuracy of measurement data and the high detection speed according to ASTRA
requirements.
The detector processes the loops one after the other in a predetermined sequence (multiplex
mode); i.e. there is always only one loop switched as inductance L to the LC oscillating circuit
of the detector. Since there is always only current flow through one loop, the channels of a
detector cannot interfere with each other. The channel reaction times and the cycle time of
the detector indicated in the technical data result from the multiplex mode.
If a metallic object is located within the range of action of the connected induction loop, the
frequency of the LC oscillator also changes owing to reduction in the loop inductance. The
detector evaluation circuit determines these changes and generates e.g. vehicle profiles for
the classification.
The detector is configured via service interface on the front. The free PC service software
LoopMaster provides a convenient operator interface for modifying and displaying all
parameters and diagnostic values. The configured parameters are stored in a non-volatile
memory (EEPROM).
The loop detector SW2224 is solely designed for use by qualified personnel trained
in dealing with traffic detection equipment. Improper use of the SW2224 may result
in unpredictable behavior of the systems controlled by the detector.
ATTENTION!

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2.2 Overview of the essential product characteristics
•Traffic data acquisition and vehicle classification ASTRA-SWISS according to ASTRA for
two lanes
•Measurement of speeds and lengths, detection of direction and wrong way drivers by
means of double loop systems, occupancy rate in connection with a controller.
•Data interface: RS485 interface at terminal strip
•Service interface: RS232 interface at front
•4 Open Collector switching outputs with parameterizable function:
Detection signals or switching signals depending on vehicle class and/or vehicle speed for
the direct control of optical traffic signs with parameterizable blinking frequency and
number of pulses.
•Euro-card plug-in (100 mm x 160 mm) for 19”-module carrier,
slim design: 20 mm (4 TE) or 40 mm (8 TE)
•Loop control in multiplex mode
•Wide setting range for measurement frequency
•Low power consumption
•Convenient operation by means of PC operating program LoopMaster via RS232, saving
of unit-specific or application-specific parameter sets by means of LoopMaster
•Non-volatile storage of all operating parameters in EEPROM (internal or external),
a slot-related parameterization can be realized by using an additional external
EEPROM at the backplane
Advantage: Parameter transfer allows simple device exchange
•System parameters, e.g.:
oFrequency
oHold time
oLoop distance
•Channel diagnosis values, e.g.:
oMeasurement frequency
oLoop inductance
oFailure type
•Permanent loop control for immediate detection of inductive loop failures
•Automatic compensation of temperature influences and ferrite control
•High interference resistance by means of frequency adjustment, oversampling and
possibility of detector synchronization
•Automatic alignment after activation, reset or parameter modification
•Automatic recalibration in case of malfunction
•µ-controller with watchdog and power fail monitoring
•Special options:
oPotential free switching outputs (electronic relays)
oTraffic data acquisition and vehicle classification with single loops1for 4 lanes
1Without speed and length measurement, no recognition of driving direction (not possible for CD9234)

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3 Installation of the SW2224
3.1 Installation and start-up of the unit
The SW2224 is designed for installation in 19" racks with plug connectors according to
DIN41612 (type F or C). Wire the racks according to the terminal assignment in the
appendix. When connecting the loops, all feeder cables must be twisted both inside the
control cabinet and the rack! Do not use the feeder cables parallel to e.g. AC-power supply
or communication cables! The loop installation manual by SWARCO TRAFFIC SYSTEMS
GMBH must be observed (available on request).
Refer to the technical data for the specification of the supply voltage.
There is no inverse polarity protection for the power supply connection (d32/z32).
Incorrect connection of the unit may result in malfunctions or destruction of the unit.
SWARCO TRAFFIC SYSTEMS GMBH does not provide any warranty coverage for
unit function in case of incorrect installation and cannot be held liable in this case.
The general electro-technical rules must be complied with when connecting the
detector.
After switching on the unit for the first time, the detector aligns to the connected loop
inductance. Short-circuited or open loop connections are indicated by the ERR (ERROR)
collective error LED and flashing of the channel LED of the disturbed channel (see also
chapter 6.2). The FCT (FUNCTION) LED flashes during normal operation with a frequency
of 1 Hz.
3.2 Overvoltage protection and loop diagnosis
The detector has a basic overvoltage protection at the loop inputs.
Additional overvoltage protection measures must be applied in order to provide multistage
overvoltage protection. For this purpose, an overvoltage protection element such as
FP_V1_3 by SWARCO TRAFFIC SYSTEMS GMBH can be mounted on a DIN rail in the
control cabinet. This protection element is adapted to the medium protection (backplane) and
the fine protection (detector).
Under no circumstances should varistors or suppression diodes be used, as these may have
a negative effect on detector function.
Before the detectors are installed, the loop values must be checked. The values for loop
inductance, ohmic resistance and insulation resistance should be checked and documented.
For more information about loop installation see the manual “Loop installation TLS“.
3.3 Connection of the feeder cable
For short distances between detector and induction loop up to approx. 15 m, the feeder cable
can be directly connected to the feeder clamps. The loop feeder cable must be drilled
approx.
20 – 50 times per meter.
ATTENTION!
ATTENTION!