Compact DIN rail mounting LDD loop detector

The LDD has a loop input inductance of 20 to 1000μH and sensitivity adjustable in 10 steps – 0.01 to 1.00% via potentiometer. The multicolour power/fault LED feature ensures simple diagnostics and ensures rapid troubleshooting, providing an effective method for monitoring the loop status, cross talk, short circuit, open circuit and inductance out of range.

The new slimline LD series comes with two SPDT relay outputs that can be independently configured to operate in pulse or presence mode, with adjustable pulse and presence detection. The dual loop version can also determine vehicle direction.

The automatic frequency tuning ensures that each time it is powered up or reset it will automatically detect disturbances present on any of the four channels and in turn will choose the channel with the best signal condition whilst the selectable sensitivity allows adjustments in 10 steps from 1 to 10. 1 being the least sensitive and 10 the most sensitive. The Automatic Sensitivity Boost (ASB) ensures accurate detection of high-base vehicles such as trucks and buses whilst the automatic loop frequency tuning avoids cross talk between loops when installed in close proximity to each other.

Crucially, the built-in fail safe / fail secure function; on detection of an error such as power loss or loop fault allows the loop detector to operate either to open or close the barriers safely.

It comes with a wide power supply range from 24 to 240VAC/VDC and many other features.

The LDD loop detector is suitable for applications such as car parks, drive through and car access control applications to control barriers, gates, bollards and car access equipment. It is designed in accordance with the latest standards and European and North American regulations and is CE, UL508 and CSA certified.

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