1-ODOT_106_Group5_LMD222_Loop_Amp.pdf

LMD222 Catalog Sheet – 010411 Designed, Manufactured and Tested in the United States of America ISO 9001:2008 Registered DEFLECTOMETER and Loop Monitor are trademarks of Eberle Design Inc. LEXAN Resin is a trademark of General Electric

DEFLECTOMETERTM SERIES

TWO CHANNEL LOOP MONITORT M

Built-in DEFLECTOMETERTM Technology Provides Users With:

Call Strength Indicator for Optimum Sensitivity Programming One step / One vehicle dynamic Sensitivity programming Frequency Meter for immediate analysis of loop frequency, avoiding loop cross-talk problems Push Button Programming

Why guess when you can know your detector is optimally programmed and performing for all vehicle classes!

ENHANCED FEATURES

Caltrans Performance Requirements: The LMD222 meets or exceeds the applicable performance requirements of the Caltrans TSCES 1989 plus July 1991 Addendum, and the latest Caltrans TEES 2007. The DEFLECTOMETERTM push-button user interface far exceeds the cumbersome DIP switch based requirements of the Caltrans specifications. The LMD222 is compatible with all 332 type Input Files and is intended as a plug-in upgrade for the standard Model 222.

DEFLECTOMETER Call Strength Indictor: The Call Strength Indicator provides the technician with a simple one-step method for accurately setting the optimum level of sensitivity that ensures accurate vehicle detection of all vehicles, including motorcycles and high-bed trucks. NO MORE GUESSING!

When a medium size vehicle is over the roadway loop, a DEFLECTOMETERTM Call Strength value of “5” assures that the optimum sensitivity has been achieved. You can adjust the DEFLECTOMETERTM reading DYNAMICALLY without moving the vehicle by using the front panel UP or DOWN sensitivity buttons. IT DOES NOT GET ANY EASIER THAN THIS!

Frequency Meter: The built-in Frequency Meter reports the operating frequency of the loop network. Ensuring that adjacent loops are separated by at least 5 KHz will avoid crosstalk problems and future service calls.

Output CALL Test Mode: The Output Call Test Mode provides a straight forward way to test that the Controller Unit is receiving an active output from the detector. This eliminates the need for cabinet test switches and associated wiring. A huge time saving feature during system set-up and trouble-shooting.

Rugged Handle Assembly:

The rugged handle assembly is made of GE LEXANTM, which is a super durable polycarbonate resin. The design of this assembly strengthens and protects the whole PCB assembly much better than conventional face plates. The temperature stability of critical components is improved with the more encompassing enclosure. Quick reference instructions are conveniently attached directly on the side of the unit, eliminating the need for cards.

Advanced Loop Diagnostics: The Fault (FLT) indicator displays the type of fault: Short, Open or 25% change of inductance.

The Fault Monitor will report and store three types of loop faults; Open Loops, Shorted Loops, and 25% sudden changes in inductance. Each type of fault is indicated by a unique sequence of flashes allowing the user to diagnose loop failures at a glance.

Options: Relay Outputs, Model LMD222R U.S. Pat. No. 7,855,893

LMD222 DEFLECTOMETERT M SERIES TWO CHANNEL INDUCTIVE LOOP VEHICLE DETECTOR

SPECIFICATIONS

General Characteristics Controls: Front panel push buttons allow the user to set the Sensitivity Level, Operational mode, and nominal Frequency independently on each channel.

Setting Sensitivity - Front Panel Push Buttons The DEFLECTOMETERTM (front panel 7-segment LED) aids in setting the DETECTOR quickly and easily to the most optimum sensitivity level to ensure the trouble-free detection of all vehicles, including motorcycles and high bed vehicles. For typical vehicles (mid-size vehicle / small pick up) utilizing properly installed roadway loops, a Call Strength of 5 displayed on the DEFLECTOMETERTM during the DETECT output period indicates an optimum sensitivity setting. For high profile vehicles (commercial trucks, 4x4’s, etc…), a Call Strength value of 4 will be optimum.

For low profile vehicles (sports cars, etc…), a Call Strength value of 6 will be optimum.

Adjusting sensitivity using the DEFLECTOMETERTM (recommended):

The DEFLECTOMETERTM should read zero (0) with no vehicle over the roadway loop. When a typical mid-sized vehicle is completely in the detection zone (DET indicator On), the Call Strength value should be adjusted up or down until the DEFLECTOMETERTM displays the desired optimum value of 5 (or 4 or 6 as described above).

If a typical vehicle located over the roadway loop causes the Call Strength “7” to be displayed on the DEFLECTOMETERTM, the sensitivity should be decreased two levels. This can be done by pressing the front panel SENS button two times to achieve the Call Strength value of 5.

If a typical vehicle located over the roadway loop causes the number “2” to be displayed on the DEFLECTOMETERTM, the sensitivity should be increased three levels. This can be done by pressing the front panel SENS button three times to achieve the Call Strength value of 5.

NOTE: THE DEFLECTOMETERTM CALL STRENGTH DYNAMICALLY UPDATES AFTER EACH

SENSITIVITY LEVEL CHANGE, ALLOWING YOU TO CHANGE SENSITIVITY SETTINGS WHILE

A VEHICLE REMAINS IN THE LOOP DETECTION ZONE.

Adjusting sensitivity without using the DEFLECTOMETERTM (manually setting sensitivity):

The DETECTOR offers 9 levels of sensitivity (1 to 9). Level 9 is the highest sensitivity. Sensitivity Level can be manually set to any desired value by pressing the front panel SENS buttons ( or) when a vehicle is NOT over the roadway loop (DET indicator Off). The first time a SENS button (

or) is pressed, the current Sensitivity Level is displayed on the DEFLECTOMETERTM for 3 seconds. If either SENS button ( or) is pressed again before the 3 second period ends, the Sensitivity Level will increase (SENS ) or decrease (SENS ). The new Sensitivity Level value will be displayed on the DEFLECTOMETERTM display for 3 seconds. The factory default Sensitivity setting is level 6.

Sensitivity ∆L / L Sensitivity ∆L / L 9 0.01% 4 0.32% 8 0.02% 3 0.64% 7 0.04% 2 1.28% 6 0.08% 1 2.56% 5 0.16% - -

Loop Frequency / Loop Frequency Display: One of four frequency settings may be selected via the front panel FREQ push button to alleviate interference which may occur when loops connected to different detectors are located adjacent to one another. To help prevent or diagnose crosstalk problems, the loop frequency is displayed on the front panel DEFLECTOMETERTM. The current loop frequency is displayed after pressing the FREQ button to display the current Frequency Level. The frequency is shown in KHz with a “-“ symbol displayed both before and after the numeric digits shown on the DEFLECTOMETERTM.

For example, after pressing the FREQ button once the display sequence might show:

“3” “-“ “2” “7” “-“

This sequence would indicate Frequency Level “3” and a loop reference frequency of 27 KHz.

Detectors on adjacent loops should all be separated by at least 5 KHz.

Loop Fault Monitoring: The Detector continuously checks the integrity of the loop. The system is able to detect shorted or open circuit loops, or sudden changes in inductance exceeding 25% of the nominal inductance. If a fault is detected, the OUT and FLT indicators continuously emit a sequence of flashes. Additionally, the DEFLECTOMETERTM displays the letter “F” indicating a current loop fault. Each type of fault is identified by a unique flash sequence:

Flash Sequence Fault 1 flash Open Circuit Loop.

2 flashes Shorted Circuit Loop.

3 flashes 25% excessive change in inductance.

If the Open or Shorted fault condition self heals, the DET indicator and DEFLECTOMETERTM will return to normal operation. The FLT indicator will continue to flash with the sequence signifying the type of fault that was last detected. In the case of the excessive inductance change fault, the unit will retune to the new inductance after a period of two seconds and continue operation. The fault condition will be indicated by the flash sequence of the FLT indicator.

Operational Modes Presence: For each channel, a Presence output mode may be selected from the front panel MODE push button. If presence mode is selected then a choice of short (S) or long (L) can be selected.

Short Presence is defined as 30 minutes and Long Presence is defined as 120 minutes.

Pulse: For each channel, a Pulse output mode (P) may be selected from the front panel MODE push button. In Pulse mode, a 125 ms ± 25ms width pulse will be output for each vehicle entering the loop detection zone.

Call: For each channel, a continuous CALL output (C) may be selected from the front panel MODE push button which will simulate the presence of a vehicle. This mode is used for testing the CALL output of a channel.

Channel Off: For each channel, the Channel Off (-) may be selected from the front panel Mode push button. This option turns OFF the channel and disables the oscillator.

Specifications:

DC Supply Voltage: Minimum .......................................................................... 10.8 Vdc Maximum ......................................................................... 28.8 Vdc DC Supply Current: Maximum ........................................................................... 100 mA Optically Isolated Outputs: True (low, 50 mA) .............................................. Less than 1.5 Vdc Maximum Current ............................................................... 100 mA Relay Outputs: AC Contact Rating ................................................... 5A @ 120 Vac

DC Contact Rating .................................................... 5A @ 30 Vdc Environmental: Operating Temperature Range: -30oF to 165oF (-34oC to 74oC) Mechanical: International Card 4.500”H (114.30mm) x 6.875”D (174.63mm) x 1.14”W (28.96mm), excluding handle, with 44 pin double sided edge connector.

Response Timing:

The following are typical response times at different sensitivity levels. Note the times indicated are valid when both channels are set to the same sensitivity.

Sensitivity Response Time Sensitivity Response Time 9 40 +/- 15ms 4 3.2 +/- 1ms 8 19 +/- 7ms 3 3.2 +/- 1ms 7 10 +/- 3ms 2 3.2 +/- 1ms 6 5 +/- 1.5ms 1 3.2 +/- 1ms 5 3.2 +/- 1ms - --

Pin Assignment:

PIN FUNCTION PIN FUNCTION

A Logic Ground 1 Reserved B DC Supply 2 Reserved C External Reset 3 Reserved D Ch 1 Loop Input 4 Ch 1 Redundant Loop Input E Ch 1 Loop Input 5 Ch 1 Redundant Loop Input F Ch 1 Output (+) 6 Reserved H Ch 1 Output (-) 7 Reserved J Ch 2 Loop Input 8 Ch 2 Redundant Loop Input K Ch 2 Loop Input 9 Ch 2 Redundant Loop Input L Chassis Ground 10 Reserved M Reserved 11 Reserved N Reserved 12 Reserved P Reserved 13 Reserved R Reserved 14 Reserved S Reserved 15 Reserved T Reserved 16 Reserved U Reserved 17 Reserved V Reserved 18 Reserved W Ch 2 Output (+) 19 Reserved X Ch 2 Output (-) 20 Reserved Y Reserved 21 Reserved Z Reserved 22 Reserved