Products : Traffic

TD624ES High Performance Traffic Detector

The TD624ES is a high performance, 4 channel, microprocessor-based card detector complying to Eurocard standards. Features incorporated on this model make it an invaluable component in any ITS system.
The TD624ES Eurocard detector complies to TR0100A UK DoT for motorway use.
The TD624ES is used in typical motorway incident detection and automated signalling (MIDAS) applications.

APPLICATIONS

· Speed monitoring in motorway application
· Determination of vehicle headway
· Calculation of vehicle occupancy
· Accurate high-speed vehicle speed measurement

Features of the TD624ES

· Optimised Response Times:

Response times are optimised to facilitate the measurement of accurate speed and length measurement data.

· Optimised Sensitivity:

Sensitivity levels are adjustable for each channel.
These have been carefully chosen for traffic control
applications allowing adjacent lane rejection and
elimination of interference.

· Adjustable Presence Time:

A range of four presence times is available and adjustable for each channel. This facilitates operation in passage mode, limited presence or for
queue detection.

· Loop Fault Monitor:

The TD624ES provides local and remote fault output indications on an individual channel basis as required

· Sequential Polling:

Scanning techniques are employed to positively eliminate crosstalk between loops connected to the same detector module.

Using the TD624ES for incident detection in IR100

TD624ES

- Technical Data High Performance Traffic Detector


Self-tuning Range:	20– 1000 µH
Sensitivity:	Four step adjustable on faceplate High 0.02%L/L Med-High 0.05% L/L Med-Low 0.1% L/L Low 0.5% L/L
Frequency:	Four step selectable on PCB 10 khz - 140 khz (Frequency dependent on loop per channel)
Output Configuration:	One presence output per channel
Presence Time:	Four step adjustable on faceplate 3.5 seconds 4 minutes 35 minutes Limited by %L/L
Response Times:	Turn on 52mS ± 2.4 mS Run off 52mS ± 2.4mS Recovery ± 80 mS
Fault Outputs:	Common open collector operates under the following conditions: Loop short/open circuit.
Indications:	The following indications are provided: 2 LED per channel 1 Red - Detect 1 Red - Fault
Protection:	Loop isolation transformers, zener diode clamping on loop inputs and gas discharge tube protection.
Power Requirements:	24V DC (+20%) Requirement 1.8 VA (max) @ 24V DC
Output:	50mA @ 30V DC - OPTO Single change-over contact per output
Operating Temp Range:	-40°C to +80°C ( Circuit conformally coated )
Mechanical Details :
Standard Eurocard Dimensions:	160mm (deep) x 100mm (high)
Faceplate:	25mm wide
Connector:	2 x 32 pin card edge (DIN 41612 type B)