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Summary of Contents for EDI LMD622 Series
- Page 1 LMD622 and LMD624 Series Inductive Loop Monitor Operations Manual THIS MANUAL CONTAINS TECHNICAL INFORMATION FOR THE LMD622, LMD622T, LMD624, LMD624H, and LMD624T SERIES INDUCTIVE LOOP MONITOR. REVISION: MARCH 2012 pn 888-062X-001...
- Page 2 THE LMD622 AND LMD624 SERIES IS DESIGNED AND MANUFACTURED IN THE USA BY EBERLE DESIGN INC. PHOENIX, ARIZONA EDI IS CERTIFIED TO ISO 9001:2008 QUALITY SYSTEMS STANDARDS. INFORMATION CONTAINED HEREIN IS PROPRIETARY TECHNICAL INFORMATION OF EBERLE DESIGN INC. PUBLICATION, REPRODUCTION OR USE IN WHOLE OR PART IS NOT PERMITTED EXCEPT UNDER TERMS AGREED UPON IN WRITING.
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Page 3: Table Of Contents
4.4.4 Lead-in Length....................10 4.5 Loop Input (Lightning Protection) ................10 4.6 Response Timing ....................... 11 4.6.1 LMD622 Series Response Timing ..............11 4.6.2 LMD624 Series Response Timing ..............11 4.7 LMD622, LMD622T Connector Pin Assignments ............. 11 4.8 LMD624, LMD624T, LMD624H Connector Pin Assignments ........12... -
Page 4: Section 1 General
1.2 OVERVIEW A dynamic Overview of the LMD622t operation which includes an interactive LMD Simulator is available on the EDI web site, www.EDItraffic.com. 1.3 DEFLECTOMETER FEATURE The LMD Series Loop Monitor introduces a concept to the inductive loop detector field that revolutionizes the process of installing and programming a loop detector. - Page 5 LMD622 and LMD624 Series Operations Manual Loop diagnostic capabilities incorporated within the LMD Series Loop Monitor enable the detection of short or open circuit loops and sudden changes of inductance exceeding 25 percent of the nominal inductance. Each type of fault is signified by the fault indicator emitting a different flash sequence.
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Page 6: Section 2 Installation And Adjustments
LMD622 and LMD624 Series Operations Manual Section 2 Installation and Adjustments 2.1 SET THE SENSITIVITY LEVEL ® The DEFLECTOMETER (front panel 7-segment LED display) aids in setting the detector to the most optimum sensitivity level to ensure the detection of all vehicles, including motorcycles and high bed vehicles. -
Page 7: Dynamic Deflectometer Display Operation
LMD622 and LMD624 Series Operations Manual when a vehicle is NOT over the roadway loop. The Sensitivity Level will be now displayed on the DEFLECTOMETER. Pressing the SENS or SENS button once will display the Sensitivity Level without changing the setting. After pressing the SENS or SENS buttons to display the Sensitivity Level, the setting can then be modified by pressing the SENS... -
Page 8: Call Mode (C)
LMD622 and LMD624 Series Operations Manual 2.2.5 CALL MODE (C) The Call mode will set the channel output to the Call state (True). This mode can be used to provide a continuous Call state to the Controller Unit regardless of the state of the detection zone. -
Page 9: Extend Always (Default)
LMD622 and LMD624 Series Operations Manual 2.4.2.1 EXTEND ALWAYS (DEFAULT) Call Extend time starts counting down when the last vehicle clears the loop detection zone. During the Extend time the DET indicator will flash four times per second and the DEFLECTOMETER will display the letter “E”. -
Page 10: Current Fault
LMD622 and LMD624 Series Operations Manual 2.6.1 CURRENT FAULT If a fault is detected, both the DET (Red) and FLT (Yellow) LEDs continuously emit a sequence of flashes and the DEFLECTOMETER will display the letter “F”. Each type of fault is identified by a different flash sequence followed by a one second pause: Flash Sequence Fault 1 flash... -
Page 11: Section 3 Loop Installation
LMD622 and LMD624 Series Operations Manual Section 3 Loop Installation The typical sensing height is 2/3 of the shortest leg of a loop (in feet). Therefore a 4’ x 8’ loop typically has a detection height of 2.6’. The inductance of a conventional four-sided loop can be estimated using the formula: L = P x (T + T) / 4 Where L = Loop Inductance in microHenries... - Page 12 LMD622 and LMD624 Series Operations Manual circumference to prevent the loop wire from rising up while the sealant is poured and curing. Many different types of loop sealant are now available. Single part types are the easiest to apply since no mixing is required, but they also tend to be more expensive in terms of linear feet of saw slot filled.
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Page 13: Section 4 Specifications
LMD622 and LMD624 Series Operations Manual Section 4 Specifications 4.1 MECHANICAL Height ....................... 4.50 inches LMD622 (H, T) Width ..................1.14 inches LMD624 (T) Width ..................2.34 inches Depth (excluding handle) ................6.875 inches 4.2 ENVIRONMENTAL Storage Temperature Range ..............-45 to +85 Operating Temperature Range .............. -
Page 14: Response Timing
LMD622 and LMD624 Series Operations Manual 4.6 RESPONSE TIMING These tables assume that all channels are set to the same Sensitivity Level. 4.6.1 LMD622 SERIES RESPONSE TIMING Sensitivity Level Response Sensitivity Level Response 76-96 ms 4-6 ms 38-50 ms 4-6 ms... -
Page 15: Lmd624, Lmd624T, Lmd624H Connector Pin Assignments
LMD622 and LMD624 Series Operations Manual 4.8 LMD624, LMD624T, LMD624H CONNECTOR PIN ASSIGNMENTS Function Function Logic Ground Channel 1 Timing Control (LMD624T) Detector Unit DC Supply Channel 2 Timing Control (LMD624T) External Reset Channel 3 Timing Control (LMD624T) Channel 1 Loop Input Channel 1 Redundant Loop Input Channel 1 Loop Input Channel 1 Redundant Loop Input...
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